Vacon NX User Manual
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Vacon NX User Manual

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user's manual
nx frequency converters
mechanical brake control
application asfiff17

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Summary of Contents for Vacon NX

  • Page 1 asfiff17...

  • Page 2: Table Of Contents

    2 • vacon INTRODUCTION INDEX Document code: ud00803h Date: 30/05/2007 INDEX................................2 Introduction........................3 Programming principle of the digital input signals............4 Defining an input for a certaion function on keypad ..............5 Defining a certain function with NC_Drive programming tool ..........6 Control I/O..........................

  • Page 3: Introduction

    The Mechanical Brake Control Application is typically used in applications where brake control is needed. The hardware can be any Vacon NXS or NXP frequency converter. In closed loop motor control mode NXP drive and encoder option board is required (NXOPTA4 or NXOPTA5).

  • Page 4: Programming Principle Of The Digital Input Signals

    The programming principle of the input signals in the Mechanical brake control Application as well as in the Multipurpose Control Application (and partly in the other applications) is different compared to the conventional method used in other Vacon NX applications. In the conventional programming method, Function to Terminal Programming Method (FTT), you have a fixed input that you define a certain function for.

  • Page 5: Defining An Input For A Certaion Function On Keypad

    Connecting a certain function (input signal) to a certain digital input is done by giving the parameter Board slot an appropriate value. The value is formed of the on the Vacon NX control board (see Vacon respective signal number NX User's Manual, Chapter 6.2) and the , see below.

  • Page 6: Defining A Certain Function With Nc_Drive Programming Tool

    6 • vacon PROGRAMMING PRINCIPLE OF THE DIGITAL INPUT SIGNALS Defining a certain function with NC_Drive programming tool If you use the NCDrive Programming Tool for parametrizing you will have to establish the connection between the function and input/output in the same way as with the control panel. Just pick the...

  • Page 7: Control I/O

    CMA a n d CMB g r ou n d in g User's Manual. CMB connected to GND CMA connected to GND CMB isolated from GND CMA isolated from GND CMB and CMA internally connected together, isolated from GND = Factory default 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 8: Mechanical Brake Control Application - Parameter Lists

    Monitoring values (Control keypad: menu M1) The monitoring values are the actual values of parameters and signals as well as statuses and measurements. Monitoring values cannot be edited. See Vacon NX User's Manual, Chapter 7 for more information. Code Parameter...

  • Page 9: Basic Parameters (Control Keypad: Menu M2 G2.1)

    Digital reference 50,00 2.1.18 0,00 Par. 2.1.2 1600 Digital reference 50,00 2.1.19 0,00 Par. 2.1.2 1601 Digital reference 50,00 2.1.20 0,00 Par. 2.1.2 1602 Digital reference 50,00 2.1.21 0,00 Par. 2.1.2 1603 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 10 10 • vacon MECHANICAL BRAKE CONTROL APPLICATION – PARAMETER LISTS Speed reference when 2.1.22 FWD Safe Speed 0,00 Par. 2.1.2 10,00 1604 digital input for FWD Safe speed is activated Speed reference when 2.1.23 REV Safe Speed 0,00 Par. 2.1.2...

  • Page 11: Input Signals (Control Keypad: Menu M2 G2.2)

    40,00 1527 coordinate NonLin X P2.2.8.3 0,00 100,00 80,00 1528 coordinate NonLin Y P2.2.8.4 0,00 100,00 80,00 1529 coordinate Table 4. Input signals, G2.2 * = Rising edge required to start 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 12: Output Signals (Control Keypad: Menu M2 G2.3)

    12 • vacon MECHANICAL BRAKE CONTROL APPLICATION – PARAMETER LISTS Output signals (Control keypad: Menu M2 G2.3) Code Parameter Unit Default Cust Note 0=Not used 1=Output freq. (0—f 2=Freq. reference (0—f 3=Motor speed (0—Motor Analogue output nominal speed) P2.3.1 function...

  • Page 13: Drive Control Parameters (Control Keypad: Menu M2 G2.4)

    Prohibit frequency P2.4.11.1 0,00 par. 2.5.2 0,00 range 1 low limit Prohibit frequency P2.4.11.2 0,00 320,00 range 1 high limit Prohibit acc./dec. P2.4.11.3 10,0 ramp Table 6. Drive control parameters, G2.4 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 14: Brake Control Parameters (Control Keypad: Menu M2 G2.5)

    14 • vacon MECHANICAL BRAKE CONTROL APPLICATION – PARAMETER LISTS Brake control parameters (Control keypad: Menu M2 G2.5) Code Parameter Unit Default Cust Note OPEN LOOP P2.5.1.x PARAMETERS P2.5.1.1 Current limit fwd P2.1.9 1531 P2.5.12 Current limit rev P2.1.9 1532 P2.5.1.3...

  • Page 15: Motor Control Parameters (Control Keypad: Menu M2 G2.6)

    P2.6.17.8 Stop state flux 150,0 100,0 1401 Current Max time for stop state P2.6.17.9 Flux off delay 32000 1402 magnetization P2.6.18.x ADVANCED OPEN LOOP PARAMETERS P2.6.18.1 Zero speed current 250,0 120,0 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 16 16 • vacon MECHANICAL BRAKE CONTROL APPLICATION – PARAMETER LISTS P2.6.18.2 Minimum current 100,0 80,0 P2.6.18.3 Flux reference 100,0 80,0 P2.6.18.4 Frequency Limit 100,0 20,0 P2.6.18.5 Stray flux current 100,0 40,0 P2.6.19.x SPEED OPTIMIZATION PARAMETERS Enable speed 0= No P2.6.19.1...

  • Page 17: Protections (Control Keypad: Menu M2 G2.7)

    Response to slot P2.7.23 See P2.7.21 fault Response to brake P2.7.24 1570 supervision fault Brake supervision P2.7.25 0,00 10,00 3,00 1571 time Response to brake P2.7.26 1572 logic fault 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 18: Autorestart Parameters (Control Keypad: Menu M2 G2.8)

    18 • vacon MECHANICAL BRAKE CONTROL APPLICATION – PARAMETER LISTS Code Parameter Unit Default Note Logic supervision P2.7.27 0,00 10,00 5,00 1573 time Response to under P2.7.28 1574 current fault P2.7.29 Under current limit P2.1.15 1575 Response to shaft P2.7.30...

  • Page 19: Identified Parameters (Control Keypad: Menu M2 G2.9)

    -32000 32000 measurement. Offsets value for phase V current P2.9.24 Iv Offset -32000 32000 measurement. Offsets value for phase W P2.9.25 Iw Offset -32000 32000 current measurement. Table 11. Identified parameters 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 20: Keypad Control (Control Keypad: Menu M3)

    4.13 Expander boards (Control keypad: Menu M7) The M7 menu shows the expander and option boards attached to the control board and board-related information. For more information, see Chapter 7.3.7 in the Vacon NX User’s Manual. Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205...

  • Page 21: Description Of Parameters

    Nominal current of the motor Find this value I on the rating plate of the motor. 2.1.10 Motor cos phi Find this value “cos phi” on the rating plate of the motor. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 22 22 • vacon DESCRIPTION OF PARAMETERS 2.1.11 I/O frequency reference selection Defines which frequency reference source is selected when controlled from the I/O control place. Default value is 0. 0 = Analogue voltage reference from terminals 2—3, e.g. potentiometer 1 = Analogue current reference from terminals 4—5, e.g. transducer...
  • Page 23 The frequency reference is limited to this parameter when the digital input specified by parameter P2.2.7.19 is activated (NO). Useful function when there is 2 control places and a limit of speed is required in one control place. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 24: Input Signals

    24 • vacon DESCRIPTION OF PARAMETERS Input Signals 2.2.1 Start/Stop logic selection 0 DIN1: closed contact = start forward DIN2: closed contact = start reverse Output Stop function frequency (par 2.4.7) = coasting DIN1 DIN2 NX12K09 Figure 3. Start forward/Start reverse The first selected direction has the highest priority.
  • Page 25 = start disabled and drive stopped if running 2.2.2 Reference offset for current input No offset Offset 4 mA (“living zero”), provides supervision of zero level signal. The response to reference fault can be programmed with parameter 2.7.1. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 26 26 • vacon DESCRIPTION OF PARAMETERS 2.2.3 2.2.4 Reference scaling, minimum value/maximum value Setting value limits: 0 ≤ par. 2.2.4 ≤ par. 2.2.5 ≤ par. 2.1.2. If parameter 2.2.5 = 0 scaling is set off. The minimum and maximum frequencies are used for scaling.
  • Page 27 Digital input = TRUE: The active set is saved to set 1 Set 2 is loaded as the active set Note: The parameter values can be changed in the active set only. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 28 FALSE Contact closed: TRUE 2.2.7.14 Dual brake control If running the machine with two Vacon drives, this function is to gain synchronized brake Open enable Dual and ramp control. The signal from the other drive is connected to the brake control digital output and the other drive is connected the other way round.
  • Page 29 100% 2.2.8.1 NonLinearization coordinate X 2.2.8.2 NonLinearziation coord nate Y 2.2.8.3 NonLinearization coordinate X 2.2.8.4 NonLinearization coordinate Y P2.2.8.4 P2.2.8.2 Reference Figure 10. Non-Linearization of the analog inputs P2.2.8.1 P2.2.8.3 100% 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 30: Output Signals

    30 • vacon DESCRIPTION OF PARAMETERS Output Signals 2.3.1 Analogue output function This parameter selects the desired function for the analogue output signal. See Table 5 on page 12 for the parameter values. 2.3.2 Analogue output filter time Defines the filtering time of the analogue output signal.
  • Page 31 17 = Brake open Brake open signal to the mechanical brake 18 = Open enable Open enable signal (Dual brake control) Table 15. Output signa s via DO1 and output relays RO1 and RO2. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 32 32 • vacon DESCRIPTION OF PARAMETERS 2.3.9 Output frequency limit supervision function No supervision Low limit supervision High limit supervision If the output frequency goes under/over the set limit (P 2.3.10) this function generates a warning message via the digital output DO1 and via the relay output RO1 or RO2 depending on the settings of parameters 2.3.6—2.3.8.

  • Page 33: Drive Control

    This enables the frequency converter to decelerate the load with a torque equal to that of acceleration (provided that the correct brake resistor has been selected). See separate Brake resistor installation manual. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 34 34 • vacon DESCRIPTION OF PARAMETERS 2.4.6 Start function Ramp: The frequency converter starts from 0 Hz and accelerates to the set reference frequency within the set acceleration time. (Load inertia or starting friction may cause prolonged acceleration times). Flying start:...
  • Page 35 0.1 makes the acceleration time 10 times shorter than outside the prohibit frequency range limits. fout [Hz] par. 2.5.3 = 0,2 Par. 2.5.2 Par. 2.5.1 par. 2.5.3 = 1,2 Figure 17. Ramp speed scaling between prohibit frequencies 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 36: Brake Control

    36 • vacon DESCRIPTION OF PARAMETERS Brake Control Mechanical brake control parameters are affecting the mechanical brake control, the smooth start and stop function and the safety functions. Mechanical brake can be set to release on current, on torque, on frequency or on external input.
  • Page 37 0 Hz at start Smooth Start Cur/Freq lim Br Mec Del Freq Close L Brake Cl Del Brake Open 0 Hz at stop Figure 19 Mechanical brake in c osed loop. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 38 38 • vacon DESCRIPTION OF PARAMETERS BRAKE OPEN IN G LOGIC Pa ra m eter: BRAKE OPEN DELAY S E T OPEN EN ABLE T o n CON TR OL SIGN AL R E S E T MOTOR CUR REN T...
  • Page 39 DC-brake is activated when the start command is given. This parameter defines the time before the brake is released. After the brake is released, the output frequency increases according to the set start function by parameter 2.4.6. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 40 40 • vacon DESCRIPTION OF PARAMETERS 2.5.1.17 DC-braking time at stop Determines if braking is ON or OFF and the braking time of the DC-brake when the motor is stopping. The function of the DC-brake depends on the stop function, parameter 2.4.7.
  • Page 41 Brake closed. The brake is closed when the frequency falls below the limits defined by parameters P2.5.1.9 and P2.5.1.10. Stop state. The drive is stopped, the brake is closed and then started in the other direction. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 42 42 • vacon DESCRIPTION OF PARAMETERS 2.5.2.x CLOSED LOOP BRAKE CONTROL PARAMETERS 2.5.2.1 Current limit This parameters defines the motor current limit that has to be exceeded before releasing the mechanical brake. If set to zero this condition is excluded.
  • Page 43 This will speed up the start in closed loop. 2.5.2.15 Start magnetizing time Specify the time for start magnetizing current specified by P2.5.1.14 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 44: Motor Control

    44 • vacon DESCRIPTION OF PARAMETERS Motor Control 2.6.1 Motor control mode Frequency control: The I/O terminal and keypad references are frequency references and the frequency converter controls the output frequency (output frequency resolution = 0.01 Hz) Speed control: The I/O terminal and keypad references are speed references and the frequency converter controls the motor speed (accuracy ±...
  • Page 45 The U/f curve can be programmed with three different points. Programmable U/f curve can be used if the other settings do not satisfy the needs of the application. See Figure 24. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 46 46 • vacon DESCRIPTION OF PARAMETERS U[V] Default: Nominal Par 2.6.5 Field weakening point voltage of the motor Par. 2.6.7 (Def. 10%) Default: Nominal frequency of the motor Par. 2.6.8 f[Hz] (Def. 1.3%) Par. 2.6.4 Par. 2.6.6 NX12K08 (Def. 5 Hz) Figure 24.
  • Page 47 1 = Identification without motor run The drive is run without speed to identify the motor parameters. The motor is supplied with current and voltage but with zero frequency. Parameters for U/f cureve, Stator 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 48 48 • vacon DESCRIPTION OF PARAMETERS resistance and parameters for auto torque boost are identified. The magnetizing current for closed loop is estimated. 2 = Identification with motor run The drive is run with speed to identify the motor parameters.
  • Page 49 The stop state magnetization time is specified by P2.6.17.9 2.6.17 9 Flux off delay Maximum time for the stop state magnetization specified by P2.6.17.8 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 50 50 • vacon DESCRIPTION OF PARAMETERS 2.6.18.x ADVANCED OPEN LOOP PARAMETERS (NXP ) If the value of par. 2.6.1 = 5, the advanced open loop mode is selected. Value 6 is advanced open loop with slip compensation. These modes are designed e.g. for lift and hoisting applications to give smoother operation with less tuning required.
  • Page 51 Motor is mainly keeping the load within defined frequency limits and generated power is dissipated in the braking resistor. Upwards Downwards Figure 25. Speed optimization and current limits 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 52 52 • vacon DESCRIPTION OF PARAMETERS 2.6.19.1 Enable speed optimization Enables speed optimization function 0 = No 1 = Yes 2.6.19.2 Frequency limit Above this limit speed optimization is active. 2.6.19.3 IL Limit UP IL current limit active in upwards direction. If output frequency is above P2.6.19.2 then frequency reference is freezed at the moment when motor current is greater than this IL current limit.

  • Page 53: Protections

    2 = Fault, stop mode after fault according to parameter 2.4.7 3 = Fault, stop mode after fault always by coasting The input phase supervision ensures that the input phases of the frequency converter have an approximately equal current. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 54 Parameters 2.7.8—2.7.12, Motor thermal protection: General The motor thermal protection is to protect the motor from overheating. The Vacon drive is capable of supplying higher than nominal current to the motor. If the load requires this high current there is a risk that the motor will be thermally overloaded.
  • Page 55 Setting this parameter does not affect the maximum output current of the drive which is determined by parameter 2.1.5 alone. Current limit, par. 2.1.5 Overload area 100% ×I Nmotor ×I Nmotor 35 Hz NX12k62 Figure 26. Motor thermal current I curve 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 56 56 • vacon DESCRIPTION OF PARAMETERS 2.7.11 Motor thermal protection: Time constant This time can be set between 1 and 200 minutes. This is the thermal time constant of the motor. The bigger the motor, the bigger the time constant. The time constant is the time within which the calculated thermal stage has reached 63% of its final value.
  • Page 57 2.7.13 If the stall time counter value goes above this limit the protection will cause a trip (see parameter 2.7.13). Time Stall No stall NX12k64 Figure 29. Stall time count 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 58 58 • vacon DESCRIPTION OF PARAMETERS 2.7.16 Max mum stall frequency The frequency can be set between 1-f (par. 2.1.2). For a stall state to occur, the output frequency must have remained below this limit. Parameters 2.7.17—2.7.20, Underload protection: General The purpose of the motor underload protection is to ensure that there is load on the motor when the drive is running.
  • Page 59 Fieldbus Board Manual. See parameter 2.7.21. 2.7.23 Response to slot fault Set here the response mode for a board slot fault due to missing or broken board. See parameter 2.7.21. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...
  • Page 60 60 • vacon DESCRIPTION OF PARAMETERS 2.7.24 Response to Brake supervision fault Set here the response mode for brake supervision fault due to missing external brake supervision signal (P2.2.7.8) after the brake is opened. 2.7.25 Brake supervision time The time window within the external brake supervision signal (P2.2.7.8) needs to be activated.
  • Page 61 The speed difference between encoder speed and the calculated speed that will cause a tripping according to the mode set by P2.7.30. 2.7.32 Shaft speed supervision time Supervision time for the shaft speed fault. 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 62: Auto Restart Parameters

    62 • vacon DESCRIPTION OF PARAMETERS Auto Restart Parameters 2.8.1 Automatic restart: Wait time Defines the time before the frequency converter tries to automatically restart the motor after the fault has disappeared. 2.8.2 Automatic restart: Trial time The Automatic restart function restarts the frequency converter when the faults selected with parameters 2.8.4 to 2.8.10 have disappeared and the waiting time has elapsed.
  • Page 63 This parameter determines how many automatic restarts can be made during the trial time set by parameter 2.8.2. = No automatic restart after External fault trip >0 = Number of automatic restarts after External fault trip 24-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com...

  • Page 64: Identified Parameters

    64 • vacon DESCRIPTION OF PARAMETERS Identified Parameters P2.9.1 – P2.9.15 F ux linearization points Flux 10…150% Motor voltage corresponding to 10%….150% of flux as a percentage of Nominal Flux voltage. P2.9.20 IR Add Zero Point Voltage Ir Add Voltage for Zero frequency, used with automatic torque boost.

  • Page 65: 5.10 Keypad Control Parameters

    Reverse: The rotation of the motor is reversed, when the keypad is the active control place. For more information, see Vacon NX User's Manual, Chapter 7.3.3.3. Stop button activated If you wish to make the Stop button a "hotspot" which always stops the drive regardless of the selected control place, give this parameter the value 1.

  • Page 66: Control Signal Logic In Mechanical Brake Control Application

    66 • vacon CONTROL SIGNAL LOGIC IN MECHANICAL BRAKE CONTROL APPLICATION CONTROL SIGNAL LOGIC IN MECHANICAL BRAKE CONTROL APPLICATION Keypad reference Digital control logic AIA1 overriding signal AIA2 DIN# Digital control logic DIN# P2.1.11 I/O reference AIA1 Joystick P2.1.12 Keypad reference DIN# Motor.Pot...

  • Page 67: Fault Tracing

    Defective component Unknown fault The frequency converter troubleshooting system is unable to locate the fault. Undervoltage DC-link voltage is under the voltage limits defined in Table 4-2 of the Vacon NX User's Manual. Most probable causes: too low a supply voltage...
  • Page 68 68 • vacon FAULT TRACING Fault Fault Possible cause code Changed data Changes may have occurred in the different counter data due to mains warning interruption Microprocessor faulty operation watchdog fault component failure Thermistor fault Thermistor is broken. Device change Option board changed.
  • Page 69 Vaasa Helsinki Vacon Traction Oy Vacon Plc (Head office and production) Vacon Plc Alasniitynkatu 30 Runsorintie 7 Äyritie 12 33700 Tampere 65380 Vaasa 01510 Vantaa telephone: +358 (0)201 2121 firstname.lastname@vacon.com telephone: +358 (0)201 212 600 fax: +358 (0)201 212 710...

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