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Küenle KFU 2 Series Manual

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Manual
Frequency Inverter
Series KFU 2- / 4-
0,55 to 3,0 kW – 230 V – KFU 2-
0,55 to 132 kW – 400 V – KFU 4-

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Summary of Contents for Küenle KFU 2 Series

  • Page 1 Manual Frequency Inverter Series KFU 2- / 4- 0,55 to 3,0 kW – 230 V – KFU 2- 0,55 to 132 kW – 400 V – KFU 4-...
  • Page 2 KFU 2-/4- General Information about the Documentation The present documentation refers to the frequency inverters KFU 2- and KFU 4- se- ries. With their factory settings, both series of devices are suited for a wide range of applications. The modular hardware and software structure enables customer-specific adaptation of the frequency inverters.
  • Page 3 KFU 2-/4- The following pictograms and signal words are used in the documentation: Danger! Danger refers to an immediate threat. Non-compliance with the precaution described may result in death, serious injury or material damage. Warning! Warning refers to a possible threat. Non-compliance with the warning may result in death, serious injury or material damage.

  • Page 4: Table Of Contents

    KFU 2-/4- TABLE OF CONTENTS General Safety Instructions and Information on Use ..............9 General Information ........................ 9 Purpose of the Frequency Inverters ................... 10 Transport and Storage ......................10 Handling and Installation ..................... 10 Electrical Connection ......................11 Information on Use ....................... 11 Maintenance and Service .....................
  • Page 5 KFU 2-/4- Connection of Unit ........................ 40 5.4.1 Dimensioning of conductor cross-section................ 40 5.4.1.1 Typical cross-sections ....................40 5.4.2 Mains Connection ......................42 5.4.3 Motor Connection ......................42 5.4.3.1 Length of motor cables, without filter................ 42 5.4.3.2 Motor cable length, with output filter dU/dt ............... 42 5.4.3.3 Motor cable length, with sinus filter ................
  • Page 6 KFU 2-/4- Commissioning of the Frequency Inverter ................80 Switching on Mains Voltage ....................80 Setup Using the Control Unit....................80 7.2.1 Configuration........................81 7.2.2 Data Set ........................... 82 7.2.3 Motor Type........................83 7.2.4 Machine Data........................83 7.2.5 Plausibility check ......................84 7.2.6 Parameter identification ....................
  • Page 7 KFU 2-/4- 10.2 Volume Flow and Pressure .................... 111 11 Operational Behavior ......................... 112 11.1 Starting Behavior......................112 11.1.1 Starting Behavior of Sensorless Control System............112 11.1.1.1 Starting Current ...................... 114 11.1.1.2 Frequency Limit ...................... 114 11.1.1.3 Brake release time....................114 11.1.2 Flux Formation .......................
  • Page 8 KFU 2-/4- 14 Control Inputs and Outputs ...................... 150 14.1 Multi-Function Input MFI1....................150 14.1.1 Analog input MFI1A ....................... 150 14.1.1.1 Characteristic......................150 14.1.1.2 Scaling ........................152 14.1.1.3 Tolerance Band and Hysteresis ................152 14.1.1.4 Filter Time Constant ....................153 14.1.1.5 Error and warning behavior ..................
  • Page 9 KFU 2-/4- 16.5.3 Speed controller......................205 16.5.3.1 Limitation of Speed Controller ................207 16.5.3.2 Limit Value Sources....................208 16.5.3.3 Integral time speed synchronization............... 208 16.5.4 Acceleration Pre-Control....................208 16.5.5 Field Controller....................... 209 16.5.5.1 Limitation of field controller..................210 16.5.6 Modulation Controller..................... 211 16.5.6.1 Limitation of Modulation Controller.................

  • Page 10: General Safety Instructions And Information On Use

    KFU 2-/4- General Safety Instructions and Information on Use Warning! The specifications and instructions contained in the documentation must be complied with strictly during installation and commissioning. Only qualified staff who has read the documentation and, in particular, the safety instructions carefully is allowed to carry out installation or commissioning work or to operate the frequency inverters.

  • Page 11: Purpose Of The Frequency Inverters

    KFU 2-/4- Purpose of the Frequency Inverters Warning! The frequency inverters are electrical drive components intended for installation in industrial plants or machines. Commissioning and start of operation is not allowed until it has been verified that the plant meets the requirements of the EC Machinery Directive 98/37/EEC and EN 60204.

  • Page 12: Electrical Connection

    KFU 2-/4- Electrical Connection Warning! Before any assembly or connection work, discharge the frequency in- verter. Verify that the frequency inverter is discharged. Do not touch the terminals because the capacitors may still be charged. Comply with the information given in the operating instructions and on the frequency inverter label.

  • Page 13: Safety Instructions On Function „Safe Torque Off" (Sto)

    KFU 2-/4- Safety Instructions on Function „Safe Torque Off“ (STO) The function „Safe Torque Off“ (STO) is a functional safety provision, i.e. it protects staff from damage, provided that projecting, installation and operation are performed properly. This function does not disconnect the plant from power supply. To disconnect the plant from power supply (for example for service purposes) an „Emergency Stop“...
  • Page 14 KFU 2-/4- Warning! Dangerous voltage! The safety function “Safe Torque Off ” may only be used if mechanical work is to be performed on the driven machines, not for work on live components. After disconnection of an external DC 24 V power supply, the DC link of the frequency inverter is still connected to mains supply.

  • Page 15: Scope Of Supply

    KFU 2-/4- Scope of Supply Thanks to the modular hardware components, the frequency inverters can be inte- grated in the automation concept easily. The scope of delivery described can be sup- plemented by optional components and adapted to the customer-specific require- ments.

  • Page 16: Kfu 2-(4.0 To 9.2 Kw) And Kfu 4- (5.5 To 15.0 Kw)

    KFU 2-/4- KFU 2-(4.0 to 9.2 kW) and KFU 4- (5.5 to 15.0 kW) Scope of Supply Scope of Supply Frequency inverter Terminal strip X10 (Phoenix ZEC 1.5/3ST5.0) Plug-in terminals for the relay output Standard fittings with fitting screws (M4x20, M4x60) for vertical assembly Brief Instructions and Operating Instructions on CD ROM Control terminals X210A / X210B (Wieland DST85 / RM3.5)

  • Page 17: Kfu 4- (18.5 To 30.0 Kw)

    KFU 2-/4- KFU 4- (18.5 to 30.0 kW) Scope of Supply Scope of Supply Frequency inverter Terminal strip X10 (Phoenix ZEC 1.5/3ST5.0) Plug-in terminals for the relay output Standard fittings with fitting screws (M4x20, M4x70) for vertical assembly Brief Instructions and Operating Instructions on CD ROM Control terminals X210A / X210B (Wieland DST85 / RM3.5) Plug-in terminal for connection of the control signals Note:...

  • Page 18: Kfu 4- (37.0 To 65.0 Kw)

    KFU 2-/4- KFU 4- (37.0 to 65.0 kW) Scope of Supply Scope of Supply Frequency inverter Terminal strip X10 (Phoenix ZEC 1.5/3ST5.0) Plug-in terminals for the relay output Standard fittings with fitting screws (M5x20) for vertical assembly Brief Instructions and Operating Instructions on CD ROM Control terminals X210A / X210B (Wieland DST85 / RM3.5) Plug-in terminal for connection of the control signals Note:...

  • Page 19: Kfu 4- (75.0 To 132.0 Kw)

    KFU 2-/4- KFU 4- (75.0 to 132.0 kW) Scope of Supply Scope of Supply Frequency inverter Terminal strip X10 (Phoenix ZEC 1.5/3ST5.0) Plug-in terminals for the relay output Control terminals X210A / X210B (Wieland DST85 / RM3.5) Plug-in terminal for connection of the control signals Brief Instructions and Operating Instructions on CD ROM Note: Please check incoming goods for quality, quantity and nature without...

  • Page 20: Technical Data

    KFU 2-/4- Technical Data General technical data CE conformity The frequency inverters KFU 2-/4 meet the requirements of the low voltage direc- tive 2006/95/EC and EN 50178/DIN VDE 0160 and EN 61800-2. EMC directive For proper installation of the frequency inverter in order to meet the requirements of EN 61800-3, please comply with the installation instructions in these operating instructions.

  • Page 21: Technical Data - Control Electronic Equipment

    KFU 2-/4- Technical Data – Control Electronic Equipment Control terminal X210A Control terminal X210B X210A.1 DC 20 V output (I =180 mA) X210B.1 Digital input or DC 24 V ±10% input for external power supply X210A.2 GND 20 V/ GND 24 V (ext.) X210B.2 Digital input STOB (sec- safety ond shutdown path)

  • Page 22: Kfu 2- (0.25 To 1.1 Kw, 230 V)

    KFU 2-/4- KFU 2- (0.25 to 1.1 kW, 230 V) Type KFU 2- Construction Size Output, motor side Recommended motor shaft power 0.25 0.37 0.55 0.75 Output current Long-term overload current (60 s) Short-time overload current (1 s) Output voltage Maximum input voltage, three-phase Protection Short circuit / earth fault proof...

  • Page 23: Kfu 2- (1.5 To 3.0 Kw, 230 V)

    KFU 2-/4- KFU 2- (1.5 to 3.0 kW, 230 V) Type KFU 2- Construction Size Output, motor side Recommended motor shaft power 4) 5) Output current 12.5 Long-term overload current (60 s) 10.5 14.3 16.2 Short-time overload current (1 s) 14.0 19.0 19.0...

  • Page 24: Kfu 2- (4.0 To 9.2 Kw, 230 V)

    KFU 2-/4- KFU 2- (4.0 to 9.2 kW, 230 V) Type KFU 2- Construction Size Output, motor side Recommended motor shaft power Output current 18.0 22.0 32.0 35.0 Long-term overload current (60 s) 26.3 30.3 44.5 51.5 Short-time overload current (1 s) 33.0 33.0 64.0...

  • Page 25: Kfu 4- (0.25 To 1.5 Kw, 400 V)

    KFU 2-/4- KFU 4- (0.25 to 1.5 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power 0.25 0.37 0.55 0.75 Output current Long-term overload current (60 s) Short-time overload current (1 s) Output voltage Maximum input voltage, three-phase Protection Short circuit / earth fault proof...

  • Page 26: Kfu 4- (1.85 To 4.0 Kw, 400 V)

    KFU 2-/4- KFU 4- (1.85 to 4.0 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power 1.85 Output current Long-term overload current (60 s) 11.7 13.5 Short-time overload current (1 s) 11.6 15.6 18.0 Output voltage Maximum input voltage, three-phase Protection...

  • Page 27: Kfu 4- (5.5 To 15.0 Kw, 400 V)

    KFU 2-/4- KFU 4- (5.5 to 15.0 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power 11.0 15.0 Output current 14.0 18.0 22.0 25.0 32.0 Long-term overload current (60 s) 21.0 26.3 30.3 37.5 44.5 Short-time overload current (1 s) 28.0...

  • Page 28: Kfu 4- (18.5 To 30.0 Kw, 400 V)

    KFU 2-/4- KFU 4- (18.5 to 30.0 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power 18.5 22.0 30.0 Output current 40.0 45.0 60.0 Long-term overload current (60 s) 60.0 67.5 90.0 Short-time overload current (1 s) 80.0 90.0 120.0...

  • Page 29: Kfu 4- (37.0 To 65.0 Kw, 400 V)

    KFU 2-/4- 3.10 KFU 4- (37.0 to 65.0 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power 37.0 45.0 55.0 65.0 Output current 75.0 90.0 110.0 125.0 Long-term overload current (60 s) 112.5 135.0 165.0 187.5 Short-time overload current (1 s)

  • Page 30: Kfu 4- (75.0 To 132.0 Kw, 400 V)

    KFU 2-/4- 3.11 KFU 4- (75.0 to 132.0 kW, 400 V) Type KFU 4- Construction Size Output, motor side Recommended motor shaft power Output current Long-term overload current (60 s) Short-time overload current (1 s) Output voltage Maximum input voltage, three-phase Protection Short circuit / earth fault proof Rotary field frequency...

  • Page 31: Operation Diagrams

    KFU 2-/4- 3.12 Operation diagrams The technical data of the frequency inverters refer to the nominal point which was selected to enable a wide range of applications. A functionally and efficient dimension- ing (derating) of the frequency inverters is possible based on the following diagrams. Installation height Power reduction (Derating), max.

  • Page 32: Mechanical Installation

    KFU 2-/4- Mechanical Installation The frequency inverters of degree of protection IP20 are designed, as a standard, for installation in electrical cabinets.  During installation, both the installation and the safety instructions as well as the device specifications must be complied with. Warning! To avoid serious physical injuries or major material damage, only quali- fied persons are allowed to work on the devices.

  • Page 33: Kfu 2- (4.0 To 9.2 Kw) And 401 (5.5 To 15.0 Kw)

    KFU 2-/4- KFU 2- (4.0 to 9.2 kW) and 401 (5.5 to 15.0 kW) The frequency inverter is mounted in a vertical position on the assembly panel by means of the standard fittings. The following illustration shows the standard fitting. Standard installation ...

  • Page 34: Kfu 4- (18.5 To 30.0 Kw)

    KFU 2-/4- KFU 4- (18.5 to 30.0 kW) The frequency inverter is mounted in a vertical position on the assembly panel by means of the standard fittings. The following illustration shows the standard fitting. Standard installation  100 mm fixing bracket top fixing bracket bottom (fixing with screws (fixing with screws...

  • Page 35: Kfu 4- (37.0 To 65.0 Kw)

    KFU 2-/4- KFU 4- (37.0 to 65.0 kW) The frequency inverter is mounted in a vertical position on the assembly panel by means of the standard fittings. The following illustration shows the standard fitting. Standard installation  100 mm fixing braket bottom fixing braket top (fixing with screws (fixing with screws...

  • Page 36: Kfu 4- (75.0 To 132.0 Kw)

    KFU 2-/4- KFU 4- (75.0 to 132.0 kW) The frequency inverter is mounted in a vertical position on the assembly panel. The following illustration shows the standard fitting. Standard installation 300 mm 300 mm The diameter of the fixing holes is 9 mm. Assembly is done by screwing the back wall of the frequency inverter to the assembly panel.

  • Page 37: Electrical Installation

    KFU 2-/4- Electrical Installation The electrical installation must be carried out by qualified staff according to the gen- eral and regional safety and installation directives. For a safe operation of the fre- quency inverter it is necessary that the documentation and the device specifications be complied with during installation and commissioning.

  • Page 38: Emc Information

    KFU 2-/4- EMC Information The frequency inverters are designed according to the requirements and limit values of product norm EN 61800-3 with an interference immunity factor (EMI) for operation in industrial applications. Electromagnetic interference is to be avoided by expert installation and observation of the specific product information.

  • Page 39: Block Diagram

    KFU 2-/4- Block diagram S3OUT L2 L3 X210A +20 V / 180 mA 24 V GND 20 V S1IND S2IND S3IND U, I S4IND S5IND X210B S6IND S7IND S1OUT MFO1 +10 V / 4 mA MFI1 GND 10 V Relay connection S3OUT Change-over contact, response time approx.

  • Page 40: Optional Components

    KFU 2-/4- Optional Components Thanks to the modular hardware components, the frequency inverters can be inte- grated in the automation concept easily. The standard and optional modules are rec- ognized during the initialization, and the controller functionality is adjusted automati- cally.

  • Page 41: Connection Of Unit

    KFU 2-/4- Connection of Unit 5.4.1 Dimensioning of conductor cross-section The cable dimensions should be selected according to the current load and voltage drop to be expected. Select the cable cross-section of the cables such that the voltage drop is as small as possible. If the voltage drop is too great, the motor will not reach its full torque.
  • Page 42 KFU 2-/4- 230 V: Three-phase connection (L1/L2/L3) Mains cable PE-conductor Motor cable 0.25 0.37 0.55 2x1.5 mm² or 1.5 mm² 1.5 mm² 1x10 mm² 0.75 1.1 kW 1.5 kW 2.2 kW 3 kW 2x4 mm² or 4 kW 4 mm² 4 mm²...

  • Page 43: Mains Connection

    KFU 2-/4- 5.4.2 Mains Connection The mains fuses and cable cross-sections are to be selected according to EN 60204-1 and DIN VDE 0298 Part 4 for the nominal operating point of the frequency inverter. According to UL/CSA, approved Class 1 copper lines with a temperature range of 60/75°C and matching mains fuses are to be used for the power cables.

  • Page 44: Motor Cable Length, With Sinus Filter

    KFU 2-/4- 5.4.3.3 Motor cable length, with sinus filter Motor cables can be much longer if sinus filters are used. By conversion in sinus- shaped currents, high-frequency portions which might limit the cable length are filtered out. Also consider the voltage drop across the cable length and the resulting voltage drop at the sinus filter.

  • Page 45: Connection Of Types

    KFU 2-/4- Connection of types 5.5.1 KFU 2- (up to 3.0 kW) and 401 (up to 4.0 kW) The mains connection of the frequency inverter is via plug-in terminal X1. The connec- tion of motor and brake resistor to the frequency inverter is done via plug-in terminal X2.
  • Page 46 KFU 2-/4- Motor connection KFU 2- (up to 3.0 kW) and 401 (up to 4.0 kW) Phoenix ZEC 1,5/ .. ST7,5 0.2 … 1.5 mm AWG 24 … 16 0.2 … 1.5 mm AWG 24 … 16 0.25 … 1.5 mm AWG 22 …...

  • Page 47: Kfu 2- (4.0 To 9.2 Kw) And 401 (5.5 To 15.0 Kw)

    KFU 2-/4- 5.5.2 KFU 2- (4.0 to 9.2 kW) and 401 (5.5 to 15.0 kW) Danger! Switch off power supply before connecting or disconnecting the mains cable to/from terminal X1, the motor cables and the brake resistor to/from terminal X2. The terminals may be live even after disconnection of the frequency inverter from power supply.
  • Page 48 KFU 2-/4- Motor connection KFU 2- (4.0 to 9.2 kW) and 401 (5.5 to 15.0 kW) Delta connection Star connection 4.0 kW … 9.2 kW 11.0 kW … 15.0 kW 6qmm / RM7,5 16qmm / RM10+15 0.2 … 6 mm 0.2 …...

  • Page 49: Kfu 4- (18.5 To 30.0 Kw)

    KFU 2-/4- 5.5.3 KFU 4- (18.5 to 30.0 kW) Danger! Switch off power supply before connecting or disconnecting the mains cable to/from terminal X1, the motor cables and the brake resistor to/from terminal X2. The terminals may be live even after disconnection of the frequency inverter from power supply.
  • Page 50 KFU 2-/4- Motor connection KFU 4- (18.5 to 30.0 kW) 2.5 Nm 22.1 lb-in 18.5 kW … 30 kW 25/ 6-15,00 0.5 … 35 mm AWG 20 … 2 0.5 … 25 mm AWG 20 … 4 1.00 … 25 mm AWG 18 …...

  • Page 51: Kfu 4- (37.0 To 65.0 Kw)

    KFU 2-/4- 5.5.4 KFU 4- (37.0 to 65.0 kW) Danger! Switch off power supply before connecting or disconnecting the mains cable to/from terminal X1, the motor cables and the brake resistor to/from terminal X2. The terminals may be live even after disconnection of the frequency inverter from power supply.
  • Page 52 KFU 2-/4- Motor connection KFU 4- (37.0 to 65.0 kW) 37.0 kW … 65.0 kW threaded bolt M8x25 wire cross section up to 70 mm 8 Nm 70.8 lb-in Star connection Delta connection Connection of brake resistor with temperature switch 37.0 kW …...

  • Page 53: Kfu 4- (75.0 To 132.0 Kw)

    KFU 2-/4- 5.5.5 KFU 4- (75.0 to 132.0 kW) Danger! Switch off power supply before connecting or disconnecting the mains cable, the motor cables and the brake resistor. The terminals may be live even after disconnection of the frequency inverter from power sup- ply.
  • Page 54 KFU 2-/4- Motor connection KFU 4- (75.0 to 132 kW) 10 Nm 88.5 lb-in Star connection Delta connection Threaded bolt M8x20 Connection of brake resistor with temperature switch 10 Nm 88.5 lb-in Threaded bolt M8x20 Note: Optional, the inverters in this size can be purchased without brake chopper and are then not provided with the terminal Rb2 for a brake resistor connection.

  • Page 55: Control Terminals

    KFU 2-/4- Control Terminals The control and software functionality can be configured as required to ensure a reli- able and economical operation. The operating instructions describe the factory set- 30 as well as the tings of the standard connections in the relevant Configuration software parameters to be set up.
  • Page 56 KFU 2-/4- Control terminal X210A Ter. Description - Voltage output 20 V, I =180 mA - input for external power supply DC 24 V ±10% GND 20 V and GND 24 V (ext.) Digital signal, STOA (1st shutdown path for safety function STO – „Safe Torque Off “), U =DC 30 V, 10 mA at DC 24 V, input resistance: 2.3 kΩ, PLC compati- ble, response time approx.

  • Page 57: External Dc 24 V Power Supply

    KFU 2-/4- 5.6.1 External DC 24 V power supply The bidirectional control terminals X210A.1/ X210A.2 can be used as a voltage output or voltage input. By connecting an external power supply of DC 24 V ±10% to termi- nals X210A.1/X210A.2, the function of inputs and outputs as well as the communica- tion can be maintained.

  • Page 58: Control Terminals - Connection Diagrams Of Configurations

    KFU 2-/4- 5.6.4 Control terminals – Connection diagrams of configurations The control hardware and the software of the frequency inverter are freely configur- able to a great extent. Certain functions can be assigned to the control terminals, and the internal logic of the software modules can be freely selected. Thanks to the modular design, the frequency inverter can be adapted to a great range of different driving tasks.

  • Page 59: Configuration 110 - Sensorless Control

    KFU 2-/4- 5.7.1 Configuration 110 – Sensorless Control Configuration 110 contains the functions for variable-speed control of a 3-phase ma- chine in a wide range of standard applications. The motor speed is set according to the selected ratio of the reference frequency to the necessary voltage. Control terminal X210A X210A.1 Voltage output +20 V or input for...

  • Page 60: Configuration 410 - Sensorless Field-Oriented Control

    KFU 2-/4- 5.7.3 Configuration 410 – Sensorless Field-Oriented Control Configuration 410 contains the functions for sensorless, field-oriented control of a 3- phase machine. The current motor speed is determined from the present currents and voltages in combination with the machine parameters. Separate control of torque and flux-forming current enables a high drive dynamics at a high load moment.

  • Page 61: Configuration 411 - Sensorless Field-Oriented Control With Technology Controller

    KFU 2-/4- 5.7.4 Configuration 411 – Sensorless Field-Oriented Control with Technology Controller Configuration 411 extends the functionality of the sensorless field-oriented control of Configuration 410 by a Technology Controller. The Technology Controller enables a control based on parameters such as flow rate, pressure, filling level or speed. Control terminal X210A X210A.1 Voltage output +20 V or input for...

  • Page 62: Configuration 430 - Sensorless Field-Oriented Control, Speed And Torque Controlled

    KFU 2-/4- 5.7.5 Configuration 430 – Sensorless Field-Oriented Control, Speed and Torque Controlled Configuration 430 extends the functionality of the sensorless field-oriented control of Configuration 410 by a Torque Controller. The reference torque is represented as a percentage and it is transmitted into the corresponding operational performance of the application.

  • Page 63: Configuration 210 - Field-Oriented Control, Speed Controlled

    KFU 2-/4- 5.7.6 Configuration 210 – Field-Oriented Control, Speed Con- trolled Configuration 210 contains the functions for speed-controlled, field-oriented control of a 3-phase machine with speed sensor feedback. The separate control of torque and flux-forming current enables high drive dynamics with a high load moment. The nec- essary speed sensor feedback results in a precise speed and torque performance.

  • Page 64: Configuration 230 - Field-Orientated Control, Speed And Torque Controlled

    KFU 2-/4- 5.7.8 Configuration 230 – Field-Orientated Control, Speed and Torque Controlled Configuration 230 extends the functionality of Configuration 210 by functions for torque-dependent, field-oriented control. The reference torque is represented as a percentage and it is transmitted into the corresponding operational performance of the application.

  • Page 65: Configuration 510 - Field-Oriented Control Of Synchronous Machine, Speed Controlled

    KFU 2-/4- 5.7.9 Configuration 510 – Field-Oriented Control of Synchro- nous Machine, Speed Controlled Configuration 510 contains the functions for speed-controlled, field-oriented control of a synchronous machine with resolver feedback. The separate control of torque and flux-forming current enables high drive dynamics with a high load moment. The nec- essary resolver feedback results in a precise speed and torque performance.

  • Page 66: Configuration 530 - Field-Orientated Control Of A Synchronous Machine, Speed And Torque Controlled

    KFU 2-/4- 5.7.10 Configuration 530 – Field-Orientated Control of a Syn- chronous Machine, Speed and Torque Controlled Configuration 530 extends the functionality of Configuration 510 by functions for torque-dependent, field-oriented control. The reference torque is represented as a percentage and it is transmitted into the corresponding operational performance of the application.

  • Page 67: Control Unit Kp500

    KFU 2-/4- Control Unit KP500 The optional KP500 control unit is a practical tool for controlling the frequency inverter and setting and displaying the frequency inverter parameters. The control unit is not absolutely necessary for the operation of the frequency inverter and can be plugged on when required.

  • Page 68: Menu Structure

    KFU 2-/4- Menu Structure The menu structure of the control unit is arranged as shown in the following illustra- tion. Use the arrow keys as well as ESC and ENT to navigate through the menu. The software contains the full set of information and enables a flexible use of the parame- ter setting and control options.

  • Page 69: Actual Value Menu (Val)

    KFU 2-/4- Actual Value Menu (VAL) In the VAL menu branch, the control unit displays a variety of actual values, depend- ing on the configuration selected and the options installed. The parameters and basic software functions linked to the corresponding actual value are documented in the operating instructions.

  • Page 70: Parameter Menu (Para)

    KFU 2-/4- Parameter Menu (PARA) The parameters to be configured during the guided commissioning procedure were selected from common applications and can be supplemented as required by further settings in the PARA menu branch. The parameters and basic software functions linked to the corresponding actual value are documented in the operating instructions.

  • Page 71: Copy Menu (Cpy)

    KFU 2-/4- Copy Menu (CPY) With the copy function of the control unit you can copy parameter values from the frequency inverter to a non-volatile memory of the control unit (upload) and store (download) them to a frequency inverter again. The copy function makes the parameterization of recurring applications much easier.

  • Page 72: Menu Structure

    KFU 2-/4- 6.5.2 Menu Structure The copy menu CPY contains three main functions. Use the arrow keys to select the required function. Select the source and the destination for the process. The memory space available in the non-volatile memory of the control unit is displayed on the three-digit seven-segment display as a percentage value.

  • Page 73: Selecting The Destination

    KFU 2-/4- 6.5.4 Selecting the Destination Select the destination (dSt.) of the copy operation (application-specific). The data source is transferred to the selected target (download).  Use the arrow keys to select the destination (dSt.) of the copied data (download). Depending on the data source selected, either the data sets of the frequency in- verter (dSt.

  • Page 74: Error Messages

    KFU 2-/4- 6.5.6 Error Messages The copy function archives all parameters, regardless of the access control and the value range. Some of the parameters are only writable if the frequency inverter is not in operation. The controller enable input (S1IND/STOA, S7IND/STOB) may not be activated during the copy operation, otherwise the data transmission is aborted.

  • Page 75: Reading Data From Control Unit

    KFU 2-/4- Reading Data From Control Unit „Parameter transmission“ enables the transmission of parameter values from the control unit KP 500 to the frequency inverter. In this operation mode, all other func- tions of the control unit are disabled, except for the COPY function. Transmission from the frequency inverter to the control unit is also disabled.

  • Page 76: Data Transfer

    KFU 2-/4- Activation via communication module CM Attention! Activation of the control unit through a communication connection is possible only if the frequency inverter is fitted with an optional commu- nication module CM, and communication takes place via this module. The control unit must be connected to the frequency inverter.

  • Page 77: Resetting To Normal Operation

    KFU 2-/4- 6.6.3 Resetting to Normal Operation A control unit KP 500 activated for parameter transmission can be reset to full func- tionality (standard operation) via a specific key code on the control unit or via each available communication module CM. Resetting on control unit ...

  • Page 78: Controlling The Motor Via The Control Unit

    KFU 2-/4- In the CTRL menu branch, various functions are available which make commission- ing easier and enable the control of the inverter via the control unit. The frequency inverters can be controlled by means of the control unit and/or a com- munication module.
  • Page 79 KFU 2-/4- The CTRL menu branch can be accessed via the navigation within the menu structure. The CtrL function contains sub- functions which are displayed according to the operating point of the frequency inverter. Pressing the RUN key leads to a direct change from anywhere within the menu structure to the motorpoti function Pot clockwise rotation or Potr for anticlockwise rotation.
  • Page 80 KFU 2-/4- Key functions Reversal of the sense of rotation independent of the control signal on the terminals Clockwise S2IND or Anticlockwise S3IND. Cancel function and return to the menu structure. Switch from internal set point int or motor potentiometer function Pot to JOG frequency;...

  • Page 81: Commissioning Of The Frequency Inverter

    KFU 2-/4- Commissioning of the Frequency Inverter Switching on Mains Voltage After completion of the installation work, make sure to check all control and power connections again before switching on the mains voltage. If all electrical connections are correct, make sure that the frequency inverter is not enabled (control inputs S1IND/STOA and S7IND/STOB open).

  • Page 82: Configuration

    KFU 2-/4-  Switch to the next parameter.  After initialization, confirm the selected configuration by pressing the ENT key.  Continue the guided commissioning procedure according to the following chap- ters. 7.2.1 Configuration 30 determines the assignment and basic function of the Parameter Configuration control inputs and outputs as well as the software functions.

  • Page 83: Data Set

    KFU 2-/4- Configuration 211, field-oriented control with technology controller Configuration 211 extends the functionality of Configuration 210 by a Technology Controller. The Technology Controller enables a control based on parameters such as flow rate, pressure, filling level or speed. Configuration 230, field-oriented control with speed/torque control Configuration 230 extends the functionality of Configuration 210 by functions for torque-dependent, field-oriented control.

  • Page 84: Motor Type

    KFU 2-/4- 7.2.3 Motor Type The properties of the control functions and methods to be set vary depending on the 369 offers a range of motor motor which is connected. The parameter Motor type variants with the corresponding values. The verification of the entered rated values and the guided commissioning are carried out on the basis of the parameterized motor type.

  • Page 85: Plausibility Check

    KFU 2-/4- Example: 90L4 Motor Parameter Star Delta Rated voltage 400 V 230 V Rated current 3.7 A 6.4 A Rated speed 1410 min 1410 min Rated cosine Phi 0.77 0.77 Rated frequency 50 Hz 50 Hz Rated mechanical power 1.5 kW 1.5 kW 7.2.5...
  • Page 86 KFU 2-/4- If an error message is displayed, the rated values must be checked and corrected. The guided commissioning procedure is repeated until the rated values have been entered correctly. Aborting the guided commissioning procedure by pressing ESC key should only be done by expert users because it may be possible that rated val- ues have not been entered or determined correctly.

  • Page 87: Parameter Identification

    KFU 2-/4- 7.2.6 Parameter identification In addition to the parameterized rated data, the selected configuration demands knowledge of further machine data not stated on the rating plate of the three-phase machine. In addition to entering the rated motor parameters or as an alternative, the required machine data can also be measured during the guided commissioning process.
  • Page 88 KFU 2-/4- After completion of the parameter identification, warning messages may be dis- played. Depending on the warning message code, the following instructions should be fol- lowed and the measures indicated should be taken. Warning Messages Code Measures / Remedy SA011 Current Controller non typical value;...

  • Page 89: Application Data

    KFU 2-/4- After completion or during the parameter identification, error messages may be dis- played. Depending on the error code, the following instructions should be followed and the measures indicated should be taken. Error Messages Code Measures / Remedy SF011 The main inductance measurement has failed because the motor has a high slip.

  • Page 90: Set Points At Multi-Functional Input

    KFU 2-/4- 7.2.7.2 Set points at multi-functional input The multi-functional input MFI1 can be parameterized for a reference value signal in 452. Operation mode 3 should only be selected by expert users for Operation mode 480 and 481. drive control via Fixed frequency 1 Fixed frequency 2 Operation mode...

  • Page 91: Selection Of An Actual Value For Display

    KFU 2-/4- 7.2.9 Selection of an actual value for display 241 is displayed at After commissioning, the value of parameter Actual frequency the control unit KP500. If another actual value is to be displayed after a restart, make the following settings: ...

  • Page 92: Speed Sensor

    KFU 2-/4- Speed sensor For some configurations an incremental speed sensor must be connected. Dependent on the speed sensor type it can be connected to the basic device or to an expansion module. Some applications require the connection to the basic device as well as to the expansion module.

  • Page 93: Speed Sensor 2

    KFU 2-/4- 7.4.2 Speed sensor 2 Speed sensor 2 must be connected to an expansion module. For connection, func- tions and detailed parameter description refer to the applicable operation instructions manual of the expansion module. Parameter Settings Description Min. Max. Fact.

  • Page 94: Set-Up Via The Communication Interface

    KFU 2-/4- Set-up via the Communication Interface Parameter-setting and commissioning of the frequency inverter via one of the optional communication interfaces include the plausibility check and the parameter identifica- tion functions. The parameters can be adjusted by qualified users. The parameter selection during the guided commissioning procedure includes the basic parameters.
  • Page 95 KFU 2-/4- SETUP Selection Function Further motor data are measured, dependent pa- Calc. and para ident., rameters are calculated and the parameter values 33 - are saved in data set 3. Further motor data are measured, dependent pa- Calc. and para ident., 34 - rameters are calculated and the parameter values are saved in data set 4.
  • Page 96 KFU 2-/4- Warning Messages Code Message Meaning The value of the parameter 370 is out of the Rated voltage rated voltage range of the frequency inverter. The maximum Rated volt- SA001 reference voltage is indicated on the nameplate of the fre- quency inverter.

  • Page 97: Inverter Data

    KFU 2-/4- Inverter Data The series KFU 2-/4- frequency inverters are suited for a wide range of applications. The modular hardware and software structure enables customer-specific adaptation. The available hardware functionality of the frequency inverter is displayed in the con- trol unit and the optional control software VPlus.

  • Page 98: Control Level

    KFU 2-/4- Control Level 28 defines the scope of the functions to be parameterized. The op- Control level erating instructions describe the parameters on the third control level. These parame- ters should only be set by qualified users. Parameter Settings Description Min.
  • Page 99 KFU 2-/4- Configuration 430, sensorless field-oriented control with speed/torque control Configuration 430 extends the functionality of Configuration 410 by functions for torque-dependent, field-oriented control. The reference torque is represented as a percentage and it is transmitted into the corresponding operational performance of the application.
  • Page 100 KFU 2-/4- In the table, you will find a list of functions which are available in the different configurations. Configuration Character- field-oriented control istic Servo sensorless sensorless sensor 410 411 430 210 211 230 Function Chapter Speed control 16.5.3 Torque control 16.5.2 Switch-over speed 14.4.6...

  • Page 101: Language

    KFU 2-/4- Language The parameters are stored in the frequency inverter in various languages. The pa- rameter description is displayed by the PC control software (e.g. VPlus) in the se- lected Language Language Function 0 - Deutsch Parameter description in German. 1 - English Parameter description in English.

  • Page 102: Machine Data

    KFU 2-/4- Machine Data The input of the machine data is the foundation for the functionality of the control functions and methods. In the course of the guided commissioning, the necessary pa- rameters are inquired according to the selected Configuration Rated Motor Parameters Set the rated parameters of the three-phase asynchronous machine according to the rating plate or the data sheet of the motor.

  • Page 103: Further Motor Parameters

    KFU 2-/4- Further motor parameters In particular the field-oriented control requires the determination of further data which cannot be read off the rating plate of the 3-phase machine for the precise calculation of the machine model. In the course of the guided commissioning, the parameter identification was carried out to measure the further motor parameters.

  • Page 104: Magnetizing Current

    KFU 2-/4- 9.2.3 Magnetizing Current 716 is a measure of the flux in the motor and thus of Rated magnetizing current the voltage which is present at the machine in no-load condition depending on the speed. The guided commissioning determines this value at about 30% of the Rated 371.

  • Page 105: Voltage Constant

    KFU 2-/4- 9.2.5 Voltage constant In configuration 5xx for the control of synchronous machines, the control behavior can be improved for high dynamic requirements by the settings of the parameter Voltage constant 383. For the voltage constant, refer to the motor data sheet. In the motor data sheet, the value may be indicated in .

  • Page 106: Change Sense Of Rotation

    KFU 2-/4- 9.2.8 Change sense of rotation The parameter 1199 reverses the rotating direction of the Change sense of rotation motor. Operation mode 1199 Positive Set value Negative Set value Motor rotates forward Motor rotates reverse 0 - Off (clockwise) (anti clockwise) Motor rotates reverse Motor rotates forward...

  • Page 107: Speed Sensor 1

    KFU 2-/4- Speed Sensor 1 The frequency inverters are to be adapted to the application depending on the re- 30 demand continuous measure- quirements. A part of the available Configuration ment of the actual speed for the control functions and methods. The necessary con- nection of an incremental speed sensor is done on the digital control terminals S5IND (track A) and S4IND (track B) of the frequency inverter.
  • Page 108 KFU 2-/4- Operation mode Function Two-channel speed sensor with recognition of direc- Single evaluation tion of rotation via track signals A and B, reference 1001 – with reference track track via digital input S6IND. One signal edge is eva- luated per division mark. Two-channel speed sensor with recognition of direc- Double evaluation tion of rotation via track signals A and B, reference...

  • Page 109: Division Marks, Speed Sensor 1

    KFU 2-/4- Attention! In configurations 210, 211 and 230, digital input S4IND is by default set for the evaluation of a speed sensor signal (track B). If an operation mode without sign is selected ( 11 or Operation Mode 12), this input is not set for the evaluation of a speed Operation Mode sensor signal and can be used for other functions.

  • Page 110: Gear Factor Speed Sensor 1

    KFU 2-/4- 9.4.3 Gear factor speed sensor 1 Setting of parameters 511 and EC1 Gear Factor Numerator EC1 Gear Factor De- 512 is required if a gear is installed between the speed sensor and the nominator motor shaft. The parameters define the mechanical transmission ratio between the speed sensor and the motor side.

  • Page 111: Sensor Evaluation

    KFU 2-/4- Sensor evaluation In the field of drive engineering, TTL and HTL sensors with 512, 1024 or 2048 divi- sion marks are widely used. However, other division mark values are used, too. These division marks (often also referred to as „increments“) determine the resolu- tion (accuracy) at which a machine can be operated.

  • Page 112: System Data

    KFU 2-/4- System Data The various control functions and methods according to the selected Configuration 30 are supplemented by control and special functions. For monitoring the application, process parameters are calculated from electrical control parameters. 10.1 Actual System Value 389 can be used if the drive is monitored The parameter Actual system value factor 242.

  • Page 113: Operational Behavior

    KFU 2-/4- Operational Behavior The operational behavior of the frequency inverter can be adjusted to the application by setting the parameters appropriately. In particular the acceleration and decelera- 30. Addition- tion behavior can be selected according to the selected Configuration ally, features such as Auto Start, and the synchronization and positioning functions facilitate the integration in the application.
  • Page 114 KFU 2-/4- Operation mode Starting Behavior In this operation mode, the current set with the parame- 781 is impressed into Current during flux-formation the motor for magnetization after release. The output frequency is kept at zero Hz for the Maximum flux- 780.

  • Page 115: Starting Current

    KFU 2-/4- 11.1.1.1 Starting Current Configurations 110, 111 and 410, 411 and 430 for control of a 3-phase machine use the starting current impression in operation modes 2, 4, 12 and 14 for the parameter 620. The 623 guarantees, in particular for high Operation mode Starting current 624.

  • Page 116: Flux Formation

    KFU 2-/4- 11.1.2 Flux Formation Field-oriented control in the configurations 210, 211, 230, 410, 411 and 430 are based on separate regulation of the flux-forming and torque-forming current compo- nents. Upon startup, the machine is magnetized and a current is impressed first. With 781 the magnetization current I the parameter is set,...

  • Page 117: Stopping Behavior

    KFU 2-/4- 11.2 Stopping Behavior The stopping behavior of the three-phase machine can be defined via parameter 630. Via the logic signals or digital inputs for the parameters Operation mode Start 68 and 69, stopping is activated. Assign digital inputs or clockwise Start anticlockwise logic signals to these parameters.
  • Page 118 KFU 2-/4- Stopping Behavior Stopping behavior 0 The inverter is disabled immediately. The drive deener- gized immediately and coasts freely. Free stopping The drive is brought to a standstill at the set decelera- tion. As soon as the drive is at a standstill, the inverter is disabled after a after a holding time.

  • Page 119: Switch-Off Threshold

    KFU 2-/4- 11.2.1 Switch-Off Threshold 637 defines the frequency as from which a Switch-off threshold stop function standstill of the drive is recognized. This percentage parameter value is relative to the Maximum frequency 419. The switch-off threshold is to be adjusted according to the load behavior of the drive and the device output, as the drive must be controlled to a speed below the switch-off threshold.

  • Page 120: Auto Start

    KFU 2-/4- Contact-controlled: If the parameter 632 is set to the value 0.0 s, the direct current brake is Braking time controlled by the Start clockwise and Start anticlockwise signals. The time monitoring and limitation by 632 are deactivated. The braking current will be im- Braking time pressed until the controller enable control signal (S1IND/STOA and S7IND/STOB) becomes logical 0 (low).

  • Page 121: Search Run

    KFU 2-/4- 11.5 Search Run The synchronization to a rotating drive is necessary in applications which drive the motor by their behavior or in which the drive is still rotating after a fault switch-off. Via 645, the motor speed is synchronized to the current mo- Operation mode search run tor speed without an "Overcurrent"...

  • Page 122: Positioning

    KFU 2-/4- The synchronization changes the parameterized starting behavior of the selected configuration. First, the start command activates the search run in order to determine the rotary frequency of the drive. In operation modes 1 to 5, the Current / Rated mo- 647 is used for synchronization as a percentage of the tor current Rated current...

  • Page 123: Reference Positioning

    KFU 2-/4- The function "Axle positioning" is available in configurations 210 and 510 (Parameter 30) and is activated by selecting operation mode 2 for parameter Configuration eration mode 458. Operation mode Function Positioning switched off. 0 - Off Positioning from reference point via definition of positioning distance (rotations).
  • Page 124 KFU 2-/4- The digital signal for registration of the reference point and the logical assignment are to be chosen from a selection of S 459. The link of the digital inputs ignal source S2IND, S3IND and S6IND to further functions is to be checked according to selected 30 (e.g., in configurations 110 and 210, digital input S2IND is linked to Configuration the function "Start of clockwise operation").
  • Page 125 KFU 2-/4- The behavior of the positioning after the required position of the drive is reached can be defined via the 463 parameter. Activity after positioning Activity after positioning Function The drive is stopped with the stopping behavior 0 - End positioning 630.

  • Page 126: Axle Positioning

    KFU 2-/4- Examples of reference positioning as a function of the parameter settings selected.  459 parameter The reference point is registered according to the Signal sources in operation mode 16–S6IND, pos. edge by a signal on digital input 6. ...
  • Page 127 KFU 2-/4- The positioning is started by a start command from a signal source (e.g. digital input) which must be assigned to the parameter 37. The signal Start Positioning of Axle source can be selected from the operation modes for digital inputs described in chap- ter "Digital inputs".
  • Page 128 KFU 2-/4- If the positioning is carried out, after controller enabling and start command, when the motor is at a standstill:  The motor is positioned clockwise to the reference orientation if the value for the reference orientation is higher than the value adjusted before. ...

  • Page 129: Error And Warning Behavior

    KFU 2-/4- Error and warning behavior Operation of the frequency inverter and the connected load are monitored continu- ously. The monitoring functions are to be parameterized with the corresponding limit values specific to the application. If the limits were set below the switch-off limit of the frequency inverter, a fault switch-off can be prevented by suitable measures if a warn- ing message is issued.

  • Page 130: Controller Status

    KFU 2-/4- Output signals Digital signals indicate the attainment of warning limits. 166 - The value “80 °C minus Warning Heat Sink Warning Limit Heat Sink Temperature 407” is attained. Temp. 167 - Warning Inside The value “65 °C minus Warning Limit Inside Temp.

  • Page 131: Frequency Switch-Off Limit

    KFU 2-/4- 12.5 Frequency Switch-Off Limit The maximum allowed output frequency of the frequency inverter can be set with the parameter 417. If this frequency limit is exceeded by the Frequency switch-off limit 210 or 241, the frequency inverter switches off with Stator frequency Actual frequency fault message “F1100”.

  • Page 132: Phase Failure

    KFU 2-/4- If the temperature value 617* is exceeded a warning or an error max.Temp. Windings switch-off is initiated according to Motor Temp. Operation Mode 570. Parameter Setting Description Min. Max. Fact. sett. 617 max.Temp. Windings* 50 °C 200 °C 150 °C * The parameter is only available if an expansion module with KTY temperature sensor input is installed, e.g.

  • Page 133: Automatic Error Acknowledgment

    KFU 2-/4- 12.8 Automatic Error Acknowledgment The automatic error acknowledgment enables acknowledgment of the faults Overcur- rent F0500, Overcurrent F0507 and Overvoltage F0700 without intervention by an overriding control system or the user. If one of the aforementioned errors occurs, the frequency inverter switches the power semi-conductors off and waits for the time stated with the parameter 579.

  • Page 134: Reference Values

    KFU 2-/4- Reference Values The KFU 2-/4- series frequency inverters can be configured specific to the application and enable customer-specific adaptation of the module hardware and software struc- ture. 13.1 Frequency Limits The output frequency of the frequency inverter and thus the speed setting range are defined by the parameters 418 and 419.

  • Page 135: Frequency Reference Channel

    KFU 2-/4- 13.4 Frequency reference channel The different functions for the defining the reference frequency are connected via the frequency reference value channel. The 475 determines the additive assignment Reference frequency source of the available reference value sources depending on the hardware installed. Reference frequency source Function Abs.

  • Page 136: Block Diagram

    KFU 2-/4- 13.4.1 Block diagram The following table describes the software switches shown in the circuit diagram as a function of the selected 475. Frequency reference value source Switch position on circuit diagram Operation MFI1A Sign mode Abs. value Abs. value Abs.
  • Page 137 KFU 2-/4- Circuit diagram of frequency reference value channel...

  • Page 138: Reference Percentage Channel

    KFU 2-/4- 13.5 Reference percentage channel The reference percentage channel combines various signal sources for definition of the reference figures. The percentage scaling facilitates integration into the applica- tion, taking various process parameters into account. 476 determines the additive assignment of the Reference Percentage Source available reference value sources depending on the hardware installed.
  • Page 139 KFU 2-/4- Circuit diagram of percent reference value channel...

  • Page 140: Fixed Reference Values

    KFU 2-/4- 13.6 Fixed reference values The fixed reference values are to be parameterized as fixed frequencies or fixed per- centages according to the configuration and function. The signs of the fixed reference values determine the direction of rotation. A positive sign means a clockwise rotation, a negative sign means an anticlockwise rotation.

  • Page 141: Jog Frequency

    KFU 2-/4- 13.6.2 JOG frequency The JOG function forms part of the functions for controlling the drive mechanism via the control unit. Use the arrow keys to change the JOG frequency within the function. The frequency of the output signal is set to the entered value if the FUN key is pressed.

  • Page 142: Frequency Ramps

    KFU 2-/4- 13.7 Frequency ramps The ramps determine how quickly the frequency value is changed if the reference value changes or after a start, stop or brake command. The maximum admissible ramp gradient can be selected according to the application and the current con- sumption of the motor.
  • Page 143 KFU 2-/4- The parameter 426 limits the difference between the output of Maximum leading the ramp and the current actual value of the drive. The set maximum deviation is a dead time for the control system which should be kept as low as possible. In case the drive is loaded heavily and high acceleration and deceleration values are selected it is possible, that a set controller limit is reached while the drive is acceler- ated or decelerated.
  • Page 144 KFU 2-/4- Setting the ramp time to 0 ms deactivates the function S curve and enables the use of the linear ramps. The data set change-over of the parameters within an accelera- tion phase of the drive mechanism demands the defined take-over of the values. The controller calculates the values required in order to reach the reference value from the ratio of the acceleration to the ramp time and uses it until the acceleration phase is complete.

  • Page 145: Percentage Value Ramps

    KFU 2-/4- 13.8 Percentage Value Ramps The percentage value ramps scale the change of the reference value (in percent) for the corresponding input function. The acceleration and deceleration of the drive are parameterized via the frequency ramps. The behavior 477 corresponds to a function which takes Gradient percentage ramp the time behavior of the drive system into account.

  • Page 146: Motor Potentiometer

    KFU 2-/4- 13.10 Motor Potentiometer Via the motor potentiometer function, the motor speed is controlled via  digital control signals (function Motorpoti MP) or via  the keys of the control unit KP 500 (Function Motorpoti KP) The control up/down commands are assigned the following functions: Activation Motorpoti (MP) Motorpoti (KP)

  • Page 147: Motorpoti (Mp)

    KFU 2-/4- 474 of the motor potentiometer function defines the behavior Operation mode of the function at various operating points of the frequency inverter. Operation mode Function In the operation mode motor potentiometer non- 0 - non-storing storing (not Latching), the drive goes to the set mini- mum reference value at each start.

  • Page 148: Controlling The Motor Via The Control Unit

    KFU 2-/4- The keys on the control unit have the following functions: Key functions ▲ / ▼ Increase / reduce frequency. Reversal of the sense of rotation independent of the control signal on the terminals Clockwise S2IND or Anticlockwise S3IND. Save the selected function as default value.

  • Page 149: Pwm-/Repetition Frequency Input

    KFU 2-/4- 13.11 PWM-/repetition frequency input The use of a PWM (pulse-width modulated) frequency signal completes the various possibilities of the reference value specification. The signal at one of the available digital inputs is evaluated according to the selected 496. Operation mode Operation mode Function...
  • Page 150 KFU 2-/4- The signal frequency at the selected repetition frequency input can be scaled via the parameter Divider 497. The parameter figure is comparable with the division marks of a speed sensor per rotation of the drive mechanism. The frequency limit of the parameterized digital input is to be taken into account for the frequency of the input signal.

  • Page 151: Control Inputs And Outputs

    KFU 2-/4- Control Inputs and Outputs The modular structure of the frequency inverters enables a wide spectrum of appli- cations on the basis of the available hardware and software functionality. The control inputs and outputs of terminals X210A and X210B described in the following can be linked to software modules freely via the described parameters.
  • Page 152 KFU 2-/4- The following characteristic is set by default and can be adapted to the application via the parameters mentioned. ( X2 / Y2 ) pos. maximum value Point 1:  2.00%   0.20  0.00%  50.00  0.00 Point 2: ...

  • Page 153: Scaling

    KFU 2-/4- 14.1.1.2 Scaling The analog input signal is mapped to the freely configurable characteristic. The max- imum admissible setting range of the drive can be set via the frequency limits or per- centage limits according to the configuration selected. In the case of the parameteri- zation of a bipolar characteristic, the set minimum and maximum limits for both di- rections of rotation are effective.

  • Page 154: Filter Time Constant

    KFU 2-/4- 418 or 518 extends the pa- The default Minimum Frequency Minimum Percentage rameterized tolerance band to the hysteresis. (X2 / Y2) pos. maximum value pos. minimum value +10V neg. minimum value (+20mA) zero point tolerance band (X1 / Y1) neg.

  • Page 155: Error And Warning Behavior

    KFU 2-/4- 14.1.1.5 Error and warning behavior For monitoring the analog input signal, an operation mode can be selected via pa- 453. rameter Error/warning behavior Error/Warning Behavior Function The input signal is not monitored. 0 - Off If the input signal is lower than 1 V or 2 mA, a 1 - Warning <...

  • Page 156: Multi-Function Output Mfo1

    KFU 2-/4- 14.2 Multi-Function Output MFO1 Multifunction output MFO1 can either be configured as a digital, analog or a repetition 550 for the multifunc- frequency output. Depending on the selected Operation mode tion output, a link to various functions of the software is possible. The operation modes not used are deactivated internally.

  • Page 157: Output Characteristic

    KFU 2-/4- 14.2.1.1 Output Characteristic The voltage range of the output signal at multifunction output 1 can be adjusted. The 553 is as- value range of the actual value selected via parameter Analog operation signed to the value range of the output signal which is adjusted via the parameters 551 and 552.

  • Page 158: Digital Outputs

    KFU 2-/4- 150000  Frequency value 14.3 Digital Outputs 530 and the relay output with the parameter Operation mode Digital output 1 532 link the digital outputs to various functions. The Operation mode Digital output 3 selection of the functions depends on the parameterized configuration. The use of the multifunctional output MFO1 as a digital output demands selection of an Operation 550 and linking via parameter...
  • Page 159 KFU 2-/4- Operation mode 530,532,554 Function The comparison according to the selected 20 - Comparator 1 540 is true. eration mode Comparator 1 The comparison according to the selected 21 - Comparator 2 543 is true. eration mode Comparator 2 Warning of 581 of V-belt moni- Operation Mode...
  • Page 160 KFU 2-/4- Operation mode 530,532,554 Function Message on status of a travel order during a positioning operation. The conditions set for pa- Motion-Block Digital Sig- rameter 1218 were fulfilled. 62 - Digital Signal 1 nal 1 „Start“, „Reference value reached“ and „End“ of a travel order were evaluated.

  • Page 161: Digital Signal

    KFU 2-/4- 14.3.1 Digital Signal The signals selected for parameters Op. Mode Digital Output 1 530, Digital Opera- 554 and 532 can be linked with inverter functions. tion Op. Mode Digital Output 3 Signal at digital output 1 The Signal which is selected via Op.

  • Page 162: Setting Frequency

    KFU 2-/4- 14.3.2 Setting Frequency If operation mode 4 - “Setting Frequency” is selected for a digital output, the corre- sponding output becomes active if the actual value 210 exceeds Stator Frequency the value of Setting Frequency 510. The relevant output is switched over again as soon as the 210 falls Stator Frequency below the value of “...

  • Page 163: Reference Value Reached

    KFU 2-/4- 14.3.3 Reference value reached In operation mode 5 - “Reference Frequency reached” for a digital output, a signal is generated via the corresponding output when the actual frequency has reached the reference value. In operation mode 6 - “Reference Percentage reached” for a digital output, a signal is generated via the corresponding output when the actual percentage value has reached the reference value.

  • Page 164: Flux Forming Finished

    KFU 2-/4- 14.3.4 Flux Forming finished If operation mode 30 is selected for a digital output the corresponding output be- comes active when the flux formation is ended. The time for the flux formation results from the operating state of the machine and the set parameters for magnetizing the machine.

  • Page 165: Warning Mask

    KFU 2-/4- 14.3.8 Warning Mask The logic signals of various monitoring and control functions can be set via the opera- tion mode for parameter 536. According to the application, any Create Warning Mask number of warnings and controller status messages can be combined. This enables internal or external control via a common output signal.
  • Page 166 KFU 2-/4- Create Warning Mask Function 35 - Controller I abs The output current is limited. Controller The output power or the torque is limited by the 36 - Torque Limitation speed controller. Controller Switch-over of field-orientated control between 37 - Torque Control speed and torque-controlled.

  • Page 167: Application Warning Mask

    KFU 2-/4- Warning code Create Warning Mask 0080 0000 Tctr 37 - Controller Torque Control 0100 0000 Rstp 38 - Ramp Stop 0200 0000 IxtLtlim 39 - Contr. Intel. Curr. Lim. LT-Ixt 0400 0000 IxtStlim 40 - Contr. Intel. Curr. Lim. ST-Ixt 0800 0000 Tclim...

  • Page 168: Digital Inputs

    KFU 2-/4- Create Appl. Warning Mask Function Deactivate Warning neg. Warning 14 is deactivated. 114 - HW-Limit-Switch Deactivate Warning Contour- Warning 15 is deactivated. 115 - ing Error Refer to the application manual “Positioning” for further details. The selected warning mask application can be read out via the parameter Actual 627.
  • Page 169 KFU 2-/4- Digital Inputs Function Signal on digital input S6IND (X210B.1) or re- 75 - S6IND mote operation via communication interface. Signal at multifunction input MFI1 (X210B.6) in 76 - MFI1D 452 = 3 - digital input or re- Operation Mode mote operation via communication interface.
  • Page 170 KFU 2-/4- Digital Inputs Function Failure of the mains voltage and power regulation active according to 670 for the 179 - Mains Failure Operation Mode voltage controller. Warning Motor Protection Parameterized 571 of the motor Operation Mode 180 - Switch protection switch has triggered.
  • Page 171 KFU 2-/4- Digital Inputs Function 526 - S2IND (Hardware) Digital input S2IND (X210A.4) 527 - S3IND (Hardware) Digital input S3IND (X210A.5) 528 - S4IND (Hardware) Digital input S4IND (X210A.6) 529 - S5IND (Hardware) Digital input S5IND (X210A.7) 530 - S6IND (Hardware) Digital input S6IND (X210B.1) Multifunction input MFI1 (X210B.6) in Operation...
  • Page 172 KFU 2-/4- Digital Inputs Function Process data for Profibus-communication. Module 750 - OUT-PZD3 Boolean CM-PDP with Profibus interface is necessary. Process data for Profibus-communication. Module 751 - OUT-PZD4 Boolean CM-PDP with Profibus interface is necessary. Process data for Profibus-communication. Module 752 - OUT-PZD5 Boolean CM-PDP with Profibus interface is necessary.

  • Page 173: Start Command

    KFU 2-/4- 14.4.1 Start command The parameters 68 and 69 can be linked to the Start Clockwise Start Anticlockwise available digital control inputs or the internal logic signals. The drive is only acceler- ated according to the control method after a start command. The logic functions are used for the specification of the direction of rotation, but also for using the parameterized 620 for the starting behavior and...

  • Page 174: Error Acknowledgment

    KFU 2-/4- 14.4.3 Error Acknowledgment The frequency inverters feature various monitoring functions which can be adapted via the error and warning behavior. Switching the frequency inverter off at the various operating points should be avoided by an application-related parameterization. If there is a fault switch-off, this report can be given via the parameter Pro- 34 or the logic signal can be acknowledged with parameter...

  • Page 175: Data Set Change-Over 1

    KFU 2-/4- 14.4.7 Data Set Change-Over Parameter values can be stored in four different data sets. This enables the use of various parameter values depending on the current operation point of the frequency inverter. The change-over between the four data sets is done via the logic signals 70 and assigned with the parameters Data set change-over 1...

  • Page 176: Fixed Value Change-Over

    KFU 2-/4- 14.4.8 Fixed Value Change-Over As a function of the selected configuration, the reference figures are specified via the 475 or assignment of the Reference frequency source Reference percentage 476. Accordingly, there can be a change between the fixed values by connec- source tion of the logic signals with the parameters Fixed frequency change-over 1...

  • Page 177: Handshake Traverse Function

    KFU 2-/4- 14.4.10 Handshake Traverse Function Via parameter 49, the signal source is selected for Handshake Traverse Function specification of the direction of rotation of the slave drive of the shot-effect function. The shot-effect function is switched on via parameter Operation mode 435.

  • Page 178: Function Modules

    KFU 2-/4- 14.5 Function Modules 14.5.1 Timer The timer function can be linked to various functions for time-control of digital signals. 790 and 793 de- The parameters Operation Mode Timer 1 Operation Mode Timer 2 fine the evaluation of the digital input signals and the unit of time of the time function. Operation Mode 790, 793 Function 0 - Off...

  • Page 179: Timer - Time Constant

    KFU 2-/4- 14.5.1.1 Timer – Time Constant The logic sequence of input and output signals is to be set separately for both timer functions via the time constants. The default parameter values result in a direct link of the input and output signal without a delay. Note: Before starting the timer, select the operation mode and set the time constants in order to avoid non-defined states.
  • Page 180 KFU 2-/4- AND connection, positive edge Parameter 790 or 793 = 3 Operation Mode Timer 1 Operation Mode Timer 2 Input Time 1 Time 1 Time 2 Time 1 Time 2 Output 1) As soon as the positive signal edge is received at the input, time 1 (signal delay) is started.

  • Page 181: Comparator

    KFU 2-/4- 14.5.2 Comparator With the help of software functions Comparator 1 and 2, various comparisons of ac- tual values with percentage-adjustable fixed values can be done. The actual values to be compared can be selected from the following table with the parameters 540 and Op.

  • Page 182: Function Table

    KFU 2-/4- The setting of the percentage limits of the comparators enables the following logical links. The comparison with signs is possible in the corresponding operation modes of the comparators. below above above below Output signals Digital signals indicate the result of the comparison. Comparator 1 171 - Output Comparator 1 The comparison –...

  • Page 183: Multiplexer/Demultiplexer

    KFU 2-/4- 14.5.4 Multiplexer/Demultiplexer The multiplexer/demultiplexer enables the transfer of various digital signals between an overriding controller and frequency inverters via field bus or between frequency inverters via the system bus. For parameterization of the multiplexer and demulti- plexer using the VTable application, the commissioning and diagnosis software VPlus, version 4.0.2 or higher is required.
  • Page 184 KFU 2-/4- Example: Transfer of a user-defined status word from a slave to a master via system bus or Profibus, parameterization of multiplexer and demultiplexer using PC applica- tion VTable in VPlus VTable User-defined Status word Multiplexer 927 - MUX-Output Parameter /Index Assign signal sources: Systembus:...

  • Page 185: F-Characteristic

    KFU 2-/4- V/f-Characteristic The sensorless control in configurations 110 and 111 is based on the proportional change of output voltage compared to the output frequency according to the config- ured characteristic. By setting the V/f-characteristic, the voltage of the connected 3-phase motor is con- trolled according to the frequency.

  • Page 186: Dynamic Voltage Pre-Control

    KFU 2-/4- 603 (UC) and 604 (FC) are derived The default Cut-off voltage Cut-off frequency 370 and 375. With the param- from the motor data Rated voltage Rated frequency 600 (US), the linear equation of the V/f-characteristic re- eterized Starting voltage sults.

  • Page 187: Control Functions

    KFU 2-/4- Control Functions The frequency inverters provide a selection of established control methods in Con- 30. The selected control structure can be parameterized as required and figuration optimized for the application by further functions. 16.1 Intelligent current limits The current limits to be set according to the application avoid inadmissible loading of the connected load and prevent a fault switch-off of the frequency inverter.

  • Page 188: Voltage Controller

    KFU 2-/4- If the output current has already been reduced due to the fact that the long-term over- load has used up, the short-term overload is no longer available even if it has not been used up beforehand. The defined overload reserve (Ixt) of the frequency in- verter is available again after a power reduction lasting 10 minutes.
  • Page 189 KFU 2-/4- Operation mode Overvoltage control, 670 = 1 Voltage controller: Parameter Operation mode Ud, f Overvoltage controller active 421 or 423 The overvoltage controller prevents a switch-off of the frequency inverter in generator operation. The reduction of the drive speed by a ramp gradient selected via the pa- 421 or 423 can lead to rameter...
  • Page 190 KFU 2-/4- Operation mode power failure regulation. 670 = 2 Voltage controller: Parameter Operation mode Ud, f Gradient limited Standard ramp by 673 or 683 or 674 Mains voltage Power failure Resumption of power With the power failure regulation, short-term power failures can be bridged. A power failure is recognized if the DC link voltage has fallen below the set value of the pa- 671.
  • Page 191 KFU 2-/4- If the mains voltage is restored before a switch-off is affected by the mains undervolt- age detection system, the drive is accelerated to its reference frequency at the set acceleration or according to the parameter 674. If Acceleration on mains resumption 674 is set to the default the value of parameter Acceleration on mains resumption...
  • Page 192 KFU 2-/4- If the mains voltage is restored after the shutdown of the drive but before the under- voltage switch-off has been reached, the frequency inverter signals a fault. The con- trol unit displays the fault message "F0702". 675 = 0 Hz) takes so long If the mains failure without shutdown ( Shutdown threshold that the frequency has been reduced to 0 Hz, the drive is accelerated to the reference...

  • Page 193: Technology Controller

    KFU 2-/4- 16.3 Technology Controller The technology controller, the behavior of which corresponds to a PID controller, is available as an additional function in configuration 111, 211 and 411. The connection of reference and actual value of the application with the functions of the frequency inverter enables process control without further components.
  • Page 194 KFU 2-/4- Caution! 68 to the logic sig- The default assignment of parameter Start clockwise nal of the technology controller must be observed: 68 = 13 - Technology Controller Start. Start Clockwise This assignment may not be changed. The technology controller be- comes active with the controller release at digital input S1IND/STOA.
  • Page 195 KFU 2-/4- The behavior of the technology controller corresponds to a PID controller with the components  proportional component Amplification  integral component Integral time  differential component Derivative time The sign of the amplification determines the direction of control, i.e. with a rising ac- tual value and pos.
  • Page 196 KFU 2-/4- The parameterization of the technology controller in the individual data sets Note: enables an adaptation to various operating points of the application with the data set change-over via control contacts. The technology controller operates in motor clockwise operation. The di- Note: rection of rotation can be changed via parameter Change Sense of Rota-...
  • Page 197 KFU 2-/4- Operation mode filling level 1, parameter Operation mode 440 = 2 This operation mode can be used, for example, for contents level control. If the actual value is missing, the function brings the output frequency to an adjust- able value.
  • Page 198 KFU 2-/4- Operation mode filling level 2, parameter Operation mode 440 = 3 This operation mode can be used, for example, for contents level control. The minimum value monitoring prevents an acceleration of the drive if the actual value is missing. If the actual value is missing (<...
  • Page 199 KFU 2-/4- Operation mode speed controller, parameter Operation mode 440 = 4 This operation mode is suited for speed controls with an analog actual value transmit- ter (e.g. analog speedometer via analog input or HTL encoder via frequency input). The motor is accelerated or decelerated according to the control deviation. The output frequency is limited by the Maximum frequency 419.
  • Page 200 KFU 2-/4- Operation mode indirect volume flow control, Operation mode parameter 440 = 5 This operation mode is suitable for volume flow control based on pressure measure- ment. The square rooted actual value enables, for example, direct measurement of the ac- tive pressure in the system via the intake nozzle of the fan.
  • Page 201 KFU 2-/4- Structural image: Indirect volume flow control Technology controller Reference percentage source Actual values: Ind. volume flow control factor Volumetric flow Pressure Actual percentage source...

  • Page 202: Functions Of Sensorless Control

    KFU 2-/4- 16.4 Functions of Sensorless Control The configurations of the sensorless control contain the following additional functions, which supplement the behavior according to the parameterized V/f characteristic. 16.4.1 Slip compensation The load-dependent difference between the reference speed and the actual speed of the 3-phase motor is referred to as the slip.

  • Page 203: Functions Of Field-Orientated Control

    KFU 2-/4- Behavior in motor operation: If the current set via parameter 613 is exceeded, the activated current Current limit limit value controller will reduce the output frequency until the current limit is no longer exceeded. The output frequency is reduced as a maximum to the frequency set by the parameter 614.
  • Page 204 KFU 2-/4- The set-up of the two current controllers is identical and enables joint setting of am- plification as well as the integral time for both controllers. For this, the parameters 700 and 701 are available. The proportional and integra- Amplification Integral time tion and component of the current controllers can be switched off by setting the pa-...

  • Page 205: Torque Controller

    KFU 2-/4- 16.5.2 Torque Controller The torque-controlled configurations 230 and 430 often demand limitation of the speed in the operating points without load moment. The controller increases the speed in order to reach the reference torque until the 767 or Frequency upper limit 768 is reached.

  • Page 206: Speed Controller

    KFU 2-/4- 16.5.3 Speed controller The source of the actual speed value is selected via parameter Actual Speed 766. By default, speed sensor 1 is used as the actual speed source. If speed Source sensor 2 of an extension module is to deliver the actual value signal for the speed controller, speed sensor 2 must be selected as the source.
  • Page 207 KFU 2-/4- Operation mode 2 clockwise clockwise anticlockwise anticlockwise generator generator motor motor motor generator motor generator Current limit Current limit generator op. The properties of the speed controller can be adapted for adjustment and optimiza- tion of the controller. The amplification and integral time of the speed controller are to be set via the parameters 722.

  • Page 208: Limitation Of Speed Controller

    KFU 2-/4- 16.5.3.1 Limitation of Speed Controller The output signal of the speed controller is the torque-forming current component Isq. The output and the I component of the speed controller can be limited via parameters Current limit 728, Current limit generator operation 729, Torque limit 730,...

  • Page 209: Limit Value Sources

    KFU 2-/4- 16.5.3.2 Limit Value Sources As an alternative to limiting the output values by a fixed value, linking to an analog input value is also possible. The analog value is limited via parameters Minimum 518 and 519, but does not con- reference percentage Maximum reference percentage sider the...

  • Page 210: Field Controller

    KFU 2-/4- Parameter Settings Description Min. Max. Fact. sett. 726 Minimum acceleration 0.1 Hz/s 6500.0 Hz/s 1.0 Hz/s 727 Mech. time constant 1 ms 60000 ms 10 ms For optimal setting, the acceleration pre-control is switched on and the mechanical time constant is set to the minimum value.

  • Page 211: Limitation Of Field Controller

    KFU 2-/4- Parameter 778 reduces the standstill current if a stopping Reduction Factor Flux behavior with the function “R->0, Stop” is selected. This stopping behavior is selected if parameter 630 is set to 2x (20 … 27 – „R->0, Stop, … “) or x2 (2, Operation Mode 12, 22, 32, 42, 52, 62, 72 –...

  • Page 212: Modulation Controller

    KFU 2-/4- 16.5.6 Modulation Controller The modulation controller, which is designed as an I regulator, automatically adapts the output value of the frequency inverter to the machine behavior in the basic speed area and in the field weakening area. If the modulation exceeds the figure set with pa- rameter 750, the field-forming current component and thus the Reference modulation...

  • Page 213: Limitation Of Modulation Controller

    KFU 2-/4- 16.5.6.1 Limitation of Modulation Controller The output signal of the modulation controller is the internal reference flux. The con- troller output and the integrating part are limited via the parameter Reference Imr 755 or the product of 716 and lower limit Rated magnetizing current Reference flux...

  • Page 214: Special Functions

    KFU 2-/4- Special Functions The configurable functions of the corresponding control methods enable another field of application of the frequency inverters. The integration in the application is made easier by special functions. 17.1 Pulse Width Modulation The motor noises can be reduced by changing over the parameter Switching fre- 400.

  • Page 215: Bus Controller

    KFU 2-/4- 17.2 The switch-on temperature of the heat sink fan can be set with the parameter Switch- on temperature If mains voltage is applied to the frequency inverter, and the heat sink temperature exceeds the set temperature, the heat sink fan is switched on. Independent from pa- rameter 39, the heat sink fan will be switched on, as soon as Switch-on temperature...
  • Page 216 KFU 2-/4- The parameter 412 defines the operating behavior and enables a Local/Remote change between the control via contacts or the control unit and/or the interface. Local/Remote Function The Start and Stop commands as well as the direction 0 - Control via Contacts of rotation are controlled via digital signals.

  • Page 217: Brake Chopper And Brake Resistance

    KFU 2-/4- 17.4 Brake Chopper and Brake Resistance The frequency inverters feature a brake chopper transistor. The external brake resis- tor is connected to terminals Rb1 and Rb2. The parameter Trigger threshold defines the switch-on threshold of the brake chopper. The generator output of the drive, which leads to the increase in the DC link voltage, is converted to heat by the external brake resistor above the limit set via parameter trigger threshold...

  • Page 218: Dimensioning Of Brake Resistor

    KFU 2-/4- 17.4.1 Dimensioning of Brake Resistor The following values must be known for dimensioning:  Peak braking power P in W b Peak  in  Resistance R  Operation Time OT in %  Calculation of peak braking power P b Peak = Peak braking power in W b Peak...

  • Page 219: Motor Protection Switch

    KFU 2-/4- 17.5 Motor Protection Switch Motor protection switches are used for protecting a motor and its supply cable against overheating by overload. Depending on the overload level, they disconnect the motor from power supply immediately in the case of a short-circuit or they disconnect the motor if an overload has occurred for some time.
  • Page 220 KFU 2-/4- Multiple motor operation Parameter 571 = 1 or 11 Operation Mode In multiple motor operation, it is assumed that each data set is assigned to a corre- sponding motor. For this, one motor and one motor protection switch are assigned to each data set.

  • Page 221: V-Belt Monitoring

    KFU 2-/4- 17.6 V-belt Monitoring Continuous monitoring of the load behavior and thus of the connection between the 3-phase machine and the load is the task of the V-belt monitoring system. The pa- rameter 581 defines the function behavior if the Operation mode Active current (sensorless control) or the torque-forming current component...

  • Page 222: Temperature Adjustment

    KFU 2-/4- The parameter 507 is to be set in such a way that it is between the Trigger threshold maximum DC link voltage which the mains can generate and the maximum admissi- ble DC link voltage of the frequency inverter. ...
  • Page 223 KFU 2-/4- The material used for the rotor winding of the motor is taken into account via the pa- rameter 466. This value defines the change of the rotor re- Temperature coefficient sistance as a function of the temperature for a certain material of the rotor winding. Typical temperature coefficients are 39%/100 °C for copper and 36%/100 °C for alu- minum at a temperature of 20 °C.

  • Page 224: Speed Sensor Monitoring

    KFU 2-/4- 17.7.3 Speed Sensor Monitoring Failures of the speed sensor lead to a faulty behavior of the drive, as the measured speed forms the foundation of the control system. By default, the speed sensor moni- toring system continuously monitors the speed sensor signal, the track signals. If an extension module EM is connected, the number of division marks is monitored addi- tionally.

  • Page 225: Traverse Function

    KFU 2-/4- 17.8 Traverse function With the traverse function, a triangle-shaped frequency signal with the acceleration and deceleration times to be set is superimposed on the output frequency. The result- ing signal courses of the reference frequency of master drive and slave drive are shown in the following diagrams.
  • Page 226 KFU 2-/4- Via parameter 435, the drive is configured as a master drive or slave Operation mode drive. Operation mode Function 0 - Off The traverse function is deactivated. 1 - Master Drive Operation as master drive. 2 - Slave Drive Operation as slave drive.

  • Page 227: Actual Values

    KFU 2-/4- Actual Values The various control functions and methods include electrical control variables and various calculated actual values of the machine or system. The different actual values can be read out for operational and error diagnosis via a communication interface or in the VAL menu branch of the operating unit.
  • Page 228 KFU 2-/4- Actual Values of the Frequency Inverter 269 Warnings Warning message with error code and abbreviation. Application Warning message with error code and 273 Application Warnings abbreviation. The reference value signal is limited by the controller 275 Controller Status coded in the controller status.

  • Page 229: Sto Status

    KFU 2-/4- 18.1.1 STO Status Parameter 277 can be used for an extended diagnosis of the two digital STO Status inputs STOA and STOB. The states of the inputs are bit coded displayed. Significance Function Input STOA is missing. Input STOB is missing. Switch off input STOA.

  • Page 230: Actual Values Of The Machine

    KFU 2-/4- 18.2 Actual Values of the Machine The frequency inverter controls the behavior of the machine in the various operating points. As a function of the configuration selected and the expansion cards installed, control variables and further actual value parameters of the machine can be dis- played.

  • Page 231: Actual Value Memory

    KFU 2-/4- 18.3 Actual value memory The assessment of the operating behavior and the maintenance of the frequency inverter in the application are facilitated by storing various actual values. The actual value memory guarantees monitoring of the individual variables for a definable pe- riod.

  • Page 232: Actual Values Of The System

    KFU 2-/4- 237 parameter to be selected in the PARA menu branch of the Reset memory operating unit enables purposeful resetting of the individual mean and peak values. The peak value and the mean value with the values stored in the period are over- written with the parameter value zero.

  • Page 233: Volume Flow And Pressure

    KFU 2-/4- 18.4.2 Volume Flow and Pressure The parameterization of the factors 397 and Nominal Volumetric Flow Nominal Pres- 398 is necessary if the matching actual values 285 and sure Volumetric Flow Pres- 286 are used to monitor the drive. The conversion is done using the electrical sure control parameters.

  • Page 234: Error Protocol

    KFU 2-/4- Error Protocol The various control methods and the hardware of the frequency inverter include func- tions which continuously monitor the application. The operational and error diagnosis is facilitated by the information stored in the error protocol. 19.1 Error List The last 16 fault messages are stored in chronological order and the No.
  • Page 235 KFU 2-/4- Heat Sink Code Meaning Heat sink temperature too high, check cooling and fan. Temperature sensor defective or ambient temperature too low. Inside Inside temperature too high, check cooling and fan. Inside temperature too low, check electrical cabinet heating. Motor Connection Motor temperature too high or sensor defective, check connection S6IND.
  • Page 236 KFU 2-/4- Motor Connection Code Meaning Earth fault on output, check motor and wiring. 415 reached, check motor and cabling, IDC compensation limit increase limit, if necessary. Minimum current monitoring, check motor and wiring. Control Connection Reference value on multifunctional input 1 faulty, check signal. Overcurrent on multifunctional input 1, check signal.

  • Page 237: Error Environment

    KFU 2-/4- 19.2 Error Environment The parameters of the error environment help troubleshooting both in the settings of the frequency inverter and also in the complete application. The error environment documents the operational behavior of the frequency inverter at the time of the last four faults.
  • Page 238 KFU 2-/4- Error Environment Description Function 367 Warning status application The application warnings coded in warning status. 361 parameter shows whether the storage of the error environment Checksum was free of errors (OK) or incomplete (NOK). Error Environment Description Function 361 Checksum Check protocol of the error environment.

  • Page 239: Operational And Error Diagnosis

    KFU 2-/4- Operational and Error Diagnosis Operation of the frequency inverter and the connected load are monitored continu- ously. Various functions document the operational behavior and facilitate the opera- tional and error diagnosis. 20.1 Status Display The green and red light-emitting diodes give information about the operating point of the frequency inverter.

  • Page 240: Controller Status

    KFU 2-/4- A decimal value is displayed, indicating the status of the digital signals in bits after conversion into a binary figure. Decimal figure 33 is displayed. Converted into the binary system, the Example: number reads OOIOOOOI. Thus, the following contact inputs or outputs are active: ...

  • Page 241: Warning Status And Warning Status Application

    KFU 2-/4- 20.4 Warning Status and Warning Status Application The current warning is displayed by a message in the warning status and can be used for an early message of a critical operational condition. If a warning is present, this is indicated by the flashing red LED and the display field WARN of the control unit.
  • Page 242 KFU 2-/4- The following warning status is displayed: Example: A008D Ixt IxtLt Tc PTC The warning status results from the hexadecimal sum of the warning codes (0001+0004+0008+0080 = 008D). The short-term overload (1 s), warning limit heat sink temperature and warning limit motor temperature warnings are present.

  • Page 243: Parameter List

    KFU 2-/4- Parameter List The parameter list is structured according to the menu branches of the control unit. The parameters are listed in ascending numerical order. A headline (shaded) can appear several times, i.e. a subject area may be listed at different places in the table. For better clarity, the parameters have been marked with pictograms: The parameter is available in the four data sets.
  • Page 244 KFU 2-/4- Actual Values of the System Description Unit Display range Chapter 242 Actual System Value 0.0 ... 999.99 18.4.1 Actual Values of the Frequency Inverter 243 Digital inputs (Hardware) 00 ... 255 18.1 244 Working hours counter 99999 18.1 245 Operation hours counter 99999 18.1...
  • Page 245 KFU 2-/4- Error List Description Unit Display range Chapter 322 Error 13 h:m; F 00000:00; FXXXX 19.1 323 Error 14 h:m; F 00000:00; FXXXX 19.1 324 Error 15 h:m; F 00000:00; FXXXX 19.1 325 Error 16 h:m; F 00000:00; FXXXX 19.1 Error Environment 330 DC –Link Voltage...

  • Page 246: Parameter Menu (Para)

    KFU 2-/4- 21.2 Parameter Menu (PARA) Inverter Data Description Unit Setting range Chapter 0 Serial Number Characters 1 Optional Modules Characters 12 Inverter Software Version Characters 15 Copyright Characters 27 Set password 0 ... 999 28 Control level 1 ... 3 29 User Name 32 characters 30 Configuration...
  • Page 247 KFU 2-/4- Actual value memory Description Unit Setting range Chapter 237 Reset memory Selection 18.3 Controlled commissioning 369 Motor Type Selection 7.2.3 Rated Motor Parameters 0.17  U ... 2  U 370 Rated voltage 0.01  I ... 10  ü  371 Rated current 372 Rated speed U/min...
  • Page 248 KFU 2-/4- Traverse function Description Unit Setting range Chapter 435 Operation mode Selection 17.8 436 Acceleration Time 0.01 … 320.00 17.8 437 Deceleration Time 0.01 … 320.00 17.8 438 Traverse Amplitude 0.01 … 50.00 17.8 439 Proportional Step 0.01 … 50.00 17.8 Technology Controller 440 Operation mode...
  • Page 249 KFU 2-/4- Percentage ramp Description Unit Setting range Chapter 477 Gradient percentage ramp 0 ... 60000 13.8 Technology Controller 478 Actual percentage source Selection 16.3 Positioning 479 time constant positioning contr. 1.00 ... 9999.99 11.6.2 Fixed Frequencies 480 Fixed frequency 1 -999.99 ...
  • Page 250 KFU 2-/4- Digital Outputs Description Unit Setting range Chapter 542 Comparator Off below -300.00 ... 300.00 14.5.2 543 Operation mode comparator 2 Selection 14.5.2 544 Comparator On above -300.00 ... 300.00 14.5.2 545 Comparator Off below -300.00 ... 300.00 14.5.2 549 Max.
  • Page 251 KFU 2-/4- Starting Behavior Description Unit Setting range Chapter 620 Operation mode Selection 11.1.1 621 Amplification 0.01 ... 10.00 11.1.1 622 Integral time 1 ... 30000 11.1.1 0.0 ... ü  I 623 Starting Current 11.1.1.1 624 Frequency Limit 0.00 ... 100.00 11.1.1.2 625 Brake release time -5000 …...
  • Page 252 KFU 2-/4- Current Controller Description Unit Setting range Chapter 700 Amplification 0.00 ... 2.00 16.5.1 701 Integral time 0.00 ... 10.00 16.5.1 Further motor parameters 713 Magnetizing current 50% flux 1 ... 50 9.2.3 714 Magnetizing current 80% flux 1 ... 80 9.2.3 715 Magnetizing current 110% flux 110 ...
  • Page 253 KFU 2-/4- Modulation Controller Description Unit Setting range Chapter 753 Operation mode Selection 16.5.6 0.01  I ... ü  I 755 Reference Imr lower limit 16.5.6.1 756 Control deviation limitation 0.00 ... 100.00 16.5.6.1 Speed Sensor Monitoring 760 Operation mode Selection 17.7.3 761 Timeout: Signal fault...

  • Page 254: Functions Of The Control Terminals (Table)

    KFU 2-/4- Functions of the control terminals (table) 1 2 3 4 5 1 2 3 4 5 Bidirect. X210A X210B...

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