WEG W22 Magnet Drive System Guía Rápida página 7

5 - Operation inspection
1 - Set the speed reference (P0121) according to the operating speed and then start the motor with no load via local
command.
2 - With the motor running, set the load slowly and check if the reading parameters P0002, P0003 and P0004 remain
stable.
6 - Solution of faults (PM sensorless and PM with encoder)
F
Before changing the content of any parameters, make a backup on the HMI or Memory Card. For
Note!
further information refer to Section 7 - Start-up and Settings of the Programming Manual.
In case any faults or abnormal behaviors occur during the operation inspection, try to solve them by using the
procedures described below. Follow the procedures separately in the order they are presented.
6.1 - Overcurrent on the inverter output (F071)
For fault at the beginning of the acceleration ramp:
1 - Increase the time of the acceleration ramp (P0100 or P0102).
2 - Increase the proportional gain of the speed controller (P0161) in steps of 1.0 up to a maximum of 20.0.
3 - Increase the proportional gain of the current regulator (P0438) in steps of 0.10 up to a maximum of 1.50.
4 - Undo steps 2 and 3 and decrease the value of the proportional gain of speed (P0161) in steps of 1.0 up to a
minimum of 4.
For fault at the end of the acceleration ramp or permanent duty:
1 - Decrease the value of the proportional gain of id (P0440) in steps of 1.0 up to a minimum of 0.2.
2 - Decrease the value of the proportional gain of speed (P0161) in steps of 1.0 up to a minimum of 4.
3 - Decrease by 5% the standard value for maximum output voltage (P0190).
4 - Decrease by 5% the speed reference (P0121).
5 - Decrease the load.
6.2 - Overvoltage on the DC busbar (F022)
The factory default value of P0185 is set at the maximum level, which disables the control of the DC busbar voltage. In order to
activate it back, set P0185 according to the table below:
Inverter V 200...240 V
P0296 0
P0185 375 V
6.3 - Overspeed on the motor (F150)
1 - Set the speed controller gains as described in Section 11 - Vector Control of the Programming Manual supplied with the inverter
in CD.
2 - Increase the proportional gain value of iq (P0438) in steps of 0.10 up to a maximum of 1.50.
6.4 - Speed oscillation (P0002)
1 - Follow the setting procedure to optimize the speed controller described in Section 11 - Vector Control of the
Programming Manual supplied with the inverter in CD.
6.5 - Oscillation of parameters P0002, P0003 or P0004
1 - Decrease the value of the proportional gain of id (P0440) in steps of 0.05 up to a minimum of 0.2.
2 - Decrease the value of the proportional gain of iq (P0438) in steps of 0.05 up to a minimum of 0.5.
3 - Decrease the value of the proportional gain of speed (P0161) in steps of 1.0 up to a minimum of 4.
4 - Check the fastening and alignment of the motor.
6.6 - Motor will not accelerate (PM with encoder)
1 - Check that the identification of the motor cables matches the power terminals U/T1, V/T2 and W/T3 of the inverter.
Otherwise, make the connections again.
380 V 400 / 415 V 440 / 460 V 480 V 500 / 525 V 550 / 575 V
1 2
618 V 675 V 748 V
3 4 5
780 V 893 V
W22 Magnet Drive System
600 V 660 / 690 V
6 7 8
972 V 972 V 1174 V
and W50 Magnet | 7
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