Rockwell Automation VSM500 Integrated Drive/Motor - Manual (Page 67)

Diagnostics and Troubleshooting 11-5
11.2 Troubleshooting Tables
Use the following tables to troubleshoot the unit. If you cannot resolve the problem
using these tables, systematically replace the drive section and the motor section one
at a time with a corresponding drive section or motor known to be operating correctly.
If the problem is not corrected, contact Reliance.
Table 11.2 – Display Not On
Possible Cause Corrective Action
Unit is not receiving input power. Check input power wiring and connections (see
section 5.0). Check main power supply.
Display ribbon cable is not connected securely. Open the cover and verify the cable connection by
lightly tugging on the cable at each end. If the
cable is disconnected, push the cable in until it clicks.
Display ribbon cable is damaged. Replace ribbon cable.
Table 11.3 – Motor Will Not Start
Possible Cause Corrective Action
Drive section has faulted. See section 11.1.
Unit is not receiving input power. Check input power wiring and connections (see
section 5.0). Check main power supply.
Start input is not asserted. Check terminal board wiring. Assert Start input on
standard unit (see section 7.6) or press green key
on local operator control unit.
Function Loss input wiring is missing or incorrectly
wired. Check Function Loss wiring (see section 7.1).
Stop input is open. Close Stop input.
Faults have not been cleared. Fault code is displayed. Clear the faults by pressing the Reset pushbutton
(wired between control terminals 13 and 15, see
section 7.8) on standard units or pressing the
key on local operator control units.
Table 11.4 – Motor Rotates but Does Not Accelerate to Full Speed
Possible Cause Corrective Action
Maximum speed is set too low. Increase maximum speed by turning the maximum
speed rotary switch to a higher position (see section
8.1).
Unit is receiving incorrect speed reference. Verify speed reference wiring (see section 7.5).
Excessive load. Reduce load; make sure the unit matches the
application requirement.
Table 11.5 – Motor Stops While Running
Possible Cause Corrective Action
Drive section has faulted. See section 11.1.
RESET