Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide - Manual (Page 17)

Diagnostics and Troubleshooting 2-3
2.2 Power-up Diagnostics in the UDC Module and PMI
Regulator
Power-up diagnostics execute in the UDC module in the AutoMax© rack and in the
PMI Regulator. When power is applied to the AutoMax rack, the UDC module
performs a series of self-tests. When all of the tests are successfully completed, the
CARD OK LED on the UDC module's faceplate will turn on.
When power is applied to the PMI Regulator, the on-board Processor performs a
series of self-tests. When all of the tests are successfully completed, the PMI
Regulator’s OK LED will turn on. If the PMI Regulator does not pass these tests, it
must be replaced.
The AC Power Technology circuitry on the PMI Regulator then performs a series of
calibration and self-diagnostic tests. When these tests are successfully completed,
the DRV RDY LED will turn on. If a failure occurs refer to the description of register
222/1222 in the Drive Configuration and Programming instruction manual (S-3056) for
help in identifying the test that failed.
After all of the power-up tests are passed, the PMI Regulator requests the appropriate
operating system from the UDC module. The UDC module downloads the operating
system and the parameter configuration data to the PMI Regulator. The PMI
Regulator then runs under the control of its operating system and begins performing
the run-time diagnostics. Run-time diagnostics are described in section 2.4.
2.3 Interlock Tests
Interlock tests are performed by the PMI Regulator whenever one of the PMI
Regulator's operating modes is selected by the programmer through the Drive Control
register (100/1100). These diagnostics verify that all conditions required for the
operating mode selected are satisfied. If the interlock tests are completed
successfully, then the operating mode requested by the programmer can be entered.
If any of the interlock diagnostics fails, the PMI Regulator will latch a bit in the Interlock
register (205/1205) corresponding to the first diagnostic test that failed, and the
requested operating mode will not be entered (i.e., the PMI Regulator will remain in
the idle mode).
If an interlock test failure occurs, follow the procedure below:
Step 1. Reset the command bit that is currently set in the Drive Control register
(100/1100).
Step 2. Correct the condition that caused the test failure.
Step 3. Set the desired command bit in the Drive Control register (100/1100).
The PMI Regulator will perform the interlock tests each time a rising edge is detected
on the command bits. The results of subsequent interlock tests will overwrite the
previous test’s results.