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Küenle KFU 2 Series Quick Start Instructions

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Quick Start
Instructions
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 Quick Start Instructions 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- This documentation describes the first steps for an easy commissioning of the frequency inverters KFU 2-/4-… The labels on the housing and behind the upper cover helps to identify the devices of the KFU series. Warning!  The safety instructions and information on use contained in this documentation and in the operating instructions manual on the attached CD must be complied with strictly during installation and commissioning of the frequency inverter.
  • Page 3 KFU 2-/4-...

  • Page 4: Table Of Contents

    KFU 2-/4- TABLE OF CONTENTS Safety instructions for “Safe torque off” function (STO) ..........5     Mechanical Installation ....................7     Electrical Installation ....................11     E MC Information   ..............................  ................................11   KFU 2- (up to 3.0 kW) and 401 (up to 4.0 kW)  ...
  • Page 5 KFU 2-/4-...

  • Page 6: Safety Instructions For "Safe Torque Off" Function (Sto)

    KFU 2-/4- Safety instructions for “Safe torque off” function (STO) The function “Safe torque off” (STO) is a function-safeguard which protects persons and avoids material damage in professional engineering and installation conditions as well as intended use. The function does not switch the machine to a de-energized state.
  • Page 7 KFU 2-/4-...

  • Page 8: Mechanical Installation

    KFU 2-/4- Mechanical Installation Warning!  During installation the following installation and safety instructions as well as the instructions in the additional manuals on CD must be complied with.  During assembly, make sure that no foreign particles (e.g. filings, dust, wires, screws, tools) can get inside the frequency inverter.
  • Page 9 KFU 2-/4- KFU 4- (18.5 to 30.0 kW) top M4x20 bottom M4x70 Screw the fixing brackets to the heat sink of the frequency inverter and the assembly panel. 100 mm KFU 4- (37.0 to 65.0 kW) top M5x20 bottom M5x20 Screw the fixing brackets to the heat sink of the frequency inverter and the assembly panel.
  • Page 10 KFU 2-/4- KFU 4- (75.0 to 132.0 kW) 300 mm 300 mm The diameter of the mounting holes is 9 mm. Screw the heat sink back panel of the frequency inverter to the assembly panel. Dimensions without optional components: Dimensions in mm Installation dimensions in mm ACTIVE Cube 401...
  • Page 11 KFU 2-/4-...

  • Page 12: Electrical Installation

    KFU 2-/4- 2 Electrical Installation Danger!  When the frequency inverter is disconnected from power supply, the mains, DC-link voltage and motor terminals may still be live for some time. Wait for some minutes until the DC link capacitors have discharged before starting to work at the unit. ...

  • Page 13: 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) Mains power connection, X1 ACT 201-18 (4.0 kW): L2 L3 L2 L3 L2 L3 3ph / 230V AC 3ph / 400V AC 1ph / 230V AC KFU 2--18 (4.0 kW): 1- und 3-phase connection is possible Motor power connection, X2 Delta connection...

  • Page 14: Kfu 4- (37.0 To 65.0 Kw)

    KFU 2-/4- KFU 4- (37.0 to 65.0 kW) Mains power connection, X1 L2 L3 8 Nm 70.8 lb-in L2 L3 3ph / 400V AC Motor power connection, X2 8 Nm 70.8 lb-in Delta connection Star connection Use the terminals R and R to connect a brake resistor.

  • Page 15: Kfu 4- (75.0 Kw To 132.0 Kw)

    KFU 2-/4- KFU 4- (75.0 kW to 132.0 kW) Motor power connection Delta connection Star connection Connection of a brake resistor with temperature switch Terminal Rb2 for a brake resistor is optional. Mains power connection L2 L3 L2 L3 PE 3ph / 400V AC 10 Nm 88.5 lb-in...

  • Page 16: Control Terminals

    KFU 2-/4- Control Terminals Caution! Switch off power supply before connecting or disconnecting the control inputs and outputs. X210A 24 V +20 V ext. GND 20 V S1IND STOA S2IND S3IND S4IND S5IND X210B S6IND STOB S7IND S1OUTD MFO1A +10 V/4 mA MFI1A GND 10 V S3OUT...

  • Page 17: External 24 Vdc Voltage Supply

    KFU 2-/4- Technical Data of the control terminals Digital inputs (X210A.3 … X210B.2): Low signal: DC 0 V … 3 V, High signal: DC 12 V … 30 V, input resistance: 2,3 kΩ, response time: 2 ms (STOA and STOB: 10 ms), PLC-compatible Digital output (X210B.3): Low signal: DC 0 V…...

  • Page 18: Commissioning Via The Control Unit Kp500

    KFU 2-/4- 3 Commissioning via the control unit KP500 The optional control unit KP500 enables the parameterization, parameter display and control of the frequency inverter. It must be connected to the front of the frequency inverter. Note: Further methods of commissioning (e.g. via optional communication modules) are described in the operating instructions manual on the attached CD.

  • Page 19: Guided Commissioning

    KFU 2-/4- Guided Commissioning Warning! The frequency inverter may be connected to power supply every 60 s. More frequent switch-on operations may damage the device. Consider this for a jog operation of a mains contactor.  Disable the frequency inverter; open contacts at control inputs STOA (digital input S1IND/terminal X210A.3) and STOB (digital input S7IND/terminal X210B.2).
  • Page 20 KFU 2-/4- Attention! The rated data of the motor must be entered according to the specifications on the rating plate for the motor connection type used (star or delta connection). If the data entered deviate from the rating plate, the parameters will not be identified correctly.
  • Page 21 KFU 2-/4-...

  • Page 22: Parameter Settings

    KFU 2-/4- 4 Parameter settings The parameters displayed in the PARA menu branch are partly set via the guided commissioning. Additional Configurations with further parameter settings are described in the operating instructions manual. 28 - The brief instructions describe the parameters in control level 1. The Control Level parameters of the higher control levels 2 or 3 are described in the operating instructions and should be set up by expert operators only.
  • Page 23 KFU 2-/4- 400 - The factory setting of the switching frequency is dependent on the Switching Frequency configuration (configuration 110: 2 kHz, configuration 410: 4 kHz). Higher switching frequencies reduce the noise of the motor but require a reduction of the output current (see technical data in the operating instructions manual).

  • Page 24: Actual Values

    KFU 2-/4- 570 - monitoring the motor temperature protects the drive Motor Temp. Operation Mode. system. Connect a suitable sensor to digital input S6IND. Setting: thermo-contact switched off thermo-contact warning message thermo-contact error switch-off Thermo-contact error switch-off after 1 min Thermo-contact error switch-off after 5 min Thermo-contact error switch-off after 10 min 645 (for synchronization) - synchronization to a rotating drive is useful in some...
  • Page 25 KFU 2-/4- 240 - speed of the asynchronous machine calculated using the machine model and Actual Speed the current load point. Display: 0.00 min ... 60000 min 241 - the current output frequency of the frequency inverter or actual Actual Frequency frequency of the drive calculated from the machine model.

  • Page 26: Control Unit Messages

    KFU 2-/4- 6 Control Unit messages Status display Rotating field at motor green Display Description No power supply Initialization and self-test flashes RUN flashes Ready for operation, no output signal Operational message flashes RUN on + WARN flashes Operational message, current Warning flashes flashes...

  • Page 27: Warning And Error Messages During Operation

    KFU 2-/4- Warning and error messages during operation The code which can be read out via parameter 269 can be composed of several Warnings messages. For example, code A0088 signals the individual warning messages A0008 + A0080. Warning messages Code Meaning A0000 No warning message available.

  • Page 28: Warning And Error Messages During Guided Commissioning

    KFU 2-/4- Electronics voltage Code Meaning Electronics voltage too low, check control terminals. Electronics voltage too high, check wiring of control terminals. Output frequency Output frequency too high, check control signals and settings. Max. frequency achieved by control, check deceleration ramps and connected brake resistor. Safety function STO Diagnosis error of the STO function;...
  • Page 29 KFU 2-/4- Warning messages after Parameter identification SA0051 The machine data for star connection were entered, the motor, however, is connected in delta. For star operation, change the motor cable connection. For delta operation, check the entered rated motor values. Repeat the parameter identification. SA0052 The machine data for delta connection were entered, the motor, however, is connected in star.

This manual is also suitable for:

Kfu 4 series

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