Rockwell Automation FlexPak 3000 Power Module Version 4.2 - Manual (Page 78)

TROUBLESHOOTING/DIAGNOSTICS
FlexPak 3000 49’1340 e 7-6
7.7.5 Regulator Led Status Information
Two LEDs are located on the Regulator board to indicate the operating status of the Regulator
board. Check and observe these LEDs when the OIM is not communicating with the regulator.
Typically, there will be no fault indication on the display when the OIM is not communicating
with the regulator board, or the CPU is suspect. If, through "spurts" of communications, a fault
can be displayed, the fault would be OIM COMMUNICATIONS TIMEOUT (F00011). The cover
on the OIM must be removed to observe these LEDs.
The two LEDs are labeled CPU OK and OIM COMM OK. CPU OK will be on whenever the
inputs and outputs are being scanned (I/O is not scanned during power-up diagnostics and
following certain faults). OIM COMM OK will be on whenever the regulator board and the OIM
are communicating properly. The following table summarizes the possible states of the two LED
indicators.
CPU OK LED OIM COMM OK LED Indication(s) and Action(s)
Off Off • No power - verify that the drive power is on. Check for 24 V
at the regulator board terminals 1 and 15 (COM ).
• LED failure - cycle power and verify that both LED's
illuminate briefly (lamp test).
• Power-up diagnostics failed - replace the regulator board.
On • Combination not used.
Blink • Combination not used.
On Off • I/O is being scanned, regulator is not communicating with
the OIM - check OIM cable, check voltages at the OIM.
On • I/O is being scanned, the regulator is communicating with
the OIM, no faults - this is the normal condition, no action is
required.
• I/O is being scanned, the regulator is communicating with
the OIM, - diagnose/correct the fault condition and reset the
fault from the selected control source fault reset.
• Power-up diagnostics in progress (lamp test).
Blink • Combination not used.
Blink Off • I/O is not being scanned, regulator board is not
communicating with the OIM,
- initialize card: set P.010, P.306, P.307 and
execute MEMORY SAVE,
- press the OIM fault reset key
- check the OIM cable or cycle power.
On • I/O is not being scanned, the regulator board is
communicating with the OIM,
- initialize card: set P.010, P.306, P.307 and
execute MEMORY SAVE,
- press the OIM fault reset key
- record information on the fault.
Blink • I/O is not being scanned, regulator board is not
communicating with the OIM,
- initialize card: set P.010, P.306, P.307 and
execute MEMORY SAVE,
- press the OIM fault reset key
- record any information about the fault and cycle power.