Rockwell Automation 1897-NOV High Speed Analog Installation Instructions - Manual (Page 10)

Fast Isolated Analog Output Module 10
Publication CIG-5.1 – April 1998
At power-up, an initial module self-check occurs. The module
checks:
•
correct RAM operation
•
EPROM operation
•
EEPROM operation
The RUN/FAULT indicator will be green when the check is
completed satisfactorily. It will flash green until the first valid block
transfer write has been received. If a fault is found initially or occurs
later, the RUN/FLT indicator turns red.
After passing initial diagnostics, the module turns the RUN/FLT
indicator to flashing green. The indicator will turn red if a fault is
detected.
The following table shows indications, probable causes and
recommended actions to correct common faults which may occur.
Indication Probable Cause Recommended Action
Bot in icator ar
No power to module
Check power to I/O chassis.
Recycle as necessary.
Both indicators are OFF
Possible short on the module
LED driver failure
Replace module.
Microprocessor, oscillator or EPROM failure Replace module.
RUN/FLT indicator ON red
If immediately after power–up, indicates RAM or
EPROM failure.
Replace module.
If during operation, indicates possible
microprocessor or backplane interface failure.
Replace module.
RUN/FLT indicator is
flashing green
Power–up diagnostics successfully completed. Normal operation.
RUN/FLT indicator is green but
module data is wrong (for
example, with cable off, input
channel data values are at
minimum scale values)
Internal fuse may be bad Replace module
Troubleshooting with the
Indicators