TROUBLESHOOTING
64 IPA Hardware Installation Guide
General Troubleshooting Guidelines
The IPA design features easy connectivity, auto-detect functions, and reliability. In addition, LEDs on the front
panel of the unit provide quick identification of AC power, drive, and Ethernet status. If, after following the
installation guidelines in Chapter 2, 3, and 4, your drive/controller does not function properly, use the guidelines
and procedures in this chapter to troubleshoot. These guidelines also apply to troubleshooting a malfunction
during normal operation of the drive.
A problem with the drive typically can be traced to one of four areas: power, power-up sequence,
communications, and motor control. If your system is not functioning properly, follow the steps indicated for each
of these areas.
Power
The following figure shows where to check the status LEDs.
Figure 29. - Ethernet Network and Drive/Controller Status LEDs
If neither the Ethernet Network Status LED nor the Drive/Controller Status LEDs are illuminated, do the
following:
1 Look for problems with AC power. Check the AC power source(s). Also check Input Power / Mains
connections (L1, L2, and earth ground terminals for Motor Input Power, and C1, C2, and earth
ground terminals for Control Input Power).
2 If using the 24V keep alive on the Auxiliary connector, check the input power and rated current of the
supply.
3 If the AC wiring is correct but no LEDs illuminate, remove all connections to the unit (Ethernet cables,
Drive I/O, Motor Feedback, Motor Input Power, and Output Power), leaving the Control Input Power
C1, C2, and earth ground terminals connected. Apply power to the drive. If any LEDs illuminate, there
is a short in one of the disconnected cables.
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