Xylem SSW-07 Soft-Starter - Manual (Page 51)

CHAPTER 6 - SOLUTION AND TROUBLESHOOTING
50
English
6.2 TROUBLESHOOTING
NOTES:
In the case of E04 (over temperature), it is necessary to wait a little
before resetting, in order to cool down.
In the case of E05 (motor overload), it is necessary to wait a little
before resetting, in order to cool down.
Problem Points to check Corrective action
Motor does not run Wrong wiring 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.
Wrong programming Check if the parameters are with the correct values
for the application.
Fault Check if the Soft-Starter is not blocked to a detected
fault condition.
Motor does not reach
nominal speed
Motor stall Increase the current limit level with the control to limit
the current (refer to table 6.1).
Motor rotation oscillates
(fluctuates)
Loose connections 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.
Motor rotation:
Too high or too low
Motor nameplate data Check if the motor used is in accordance to the
application.
LEDs off Check the power supply
voltage of the control
board (A1 and A2)
Nominal values must be inside the following limits:
Umin. = 93.5 Vac
Umax.= 264 Vac
Vibration during
acceleration
Soft-Starter Settings Reduce the acceleration ramp time.
table 6.2 - Solving the most frequent problems
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.