Troubleshooting - WEG SSW-08 Manual Del Usuario

Solution and Troubleshooting

6.2 TROUBLESHOOTING

Problem
Motor does not run
Motor does not
reach nominal speed
Motor rotation
oscillates (fluctuates)
Motor rotation:
Too high or too low
LEDs off
Vibration during
acceleration
6
NOTE!
When contacting WEG for service or technical assistance, please have the following
data on hand:
Model of the Soft-Starter;
„
Serial number, production date and hardware revision present in the identification
„
label of the product (refer to item 2.3);
Installed software version (refer to item 2.3);
„
Application and programming data.
„
For explanations, training or service, please contact WEG Automação Service Department.
46 | SSW-08
Table 6.2: Solving the most frequent problems
Points to check
Wrong wiring
Wrong programming
Fault
Motor stall
Loose connections
Motor nameplate data
Check the power supply
voltage of the control
board (A1 and A2)
Soft-Starter Settings
Corrective action
Check all the power and command connections.
For example:
The DIx digital inputs programmed as enabling or external
fault must be connected to AC supply.
Check if the parameters are with the correct values for the
application.
Check if the Soft-Starter is not blocked to a detected fault
condition.
Increase the current limit level with the control to limit the
current (refer to table 6.1).
Switch the Soft-Starter and the power supply off and
tighten all the connections.
Check all the internal connections of the Soft-Starter to
make sure they are well connected.
Check if the motor used is in accordance to the application.
Nominal values must be inside the following limits:
Umin. = 93.5 Vac
Umax.= 264 Vac
Reduce the acceleration ramp time.
Reduce the pedestal voltage setting.