Allen-Bradley 20Y, Hardware Service Manual

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14 Rockwell Automation Publication 20Y-TG001C-EN-P - April 2017
Chapter 1 Troubleshooting and Error Codes
29 Anlg In Loss An analog input is configured to fault
on a signal loss. A signal loss has
occurred. Configure this fault with
parameter 203 or 206 [Anlg In x Loss].
Verify parameter 203 or 206 [Anlg In x
Loss] setting. Verify that input signal
levels are greater than or equal to 1.5V
or 3 mA.
Check for broken/loose connections at
the inputs.
30 MicroWatchdog A microprocessor watchdog timeout
has occurred.
Cycle the power.
Replace the control board. See
page 39 .
31 IGBT Temp Hw The AFE input current has exceeded
the 1 minute overload rating.
Check for an excess load.
32 Fan Cooling The power structure or LCL filter fans
are not energized at start command.
If the LCL filter fan is not operating,
check the fan DC power supply board in
front of the LCL filter fan.
If the power structure fan is not
operating, check the fan inverter board
behind the fan.
For additional information, see
PowerFlex 700H, 700S, and 700AFE
Drive Fan Systems Installation
Instructions, publication PFLEX-IN029 .
33 AutoReset Lim The AFE unsuccessfully attempted to
reset a fault and resumed running for
the programmed number in parameter
053 [Auto Rstrt Tries]. You can enable/
disable this fault with parameter 120
[Fault Config].
Correct the cause and manually clear the
fault.
34 CAN Bus Flt A sent message was not
acknowledged.
Cycle the power.
Replace the control board on the power
structure. See page 39 .
35 Application Problem in application software with
task overload.
Contact technical support.
37 HeatsinkUndTp The ambient temperature around the
power structure heatsink is too low.
Raise the ambient temperature.
44 Device Change The new power unit or option board
that is installed is another type.
Clear the fault and verify the correct
parameters for the new option board.
45 Device Add A new option board was added. Clear the fault.
47 NvsReadChksum There was an error reading parameters
019 [Motoring MWh], 020 [Regen
MWh], and 021 [Elapsed Run Time]
from EEPROM.
Cycle the power.
Replace the control board. See
page 39 .
54 Zero Divide This event occurred because a
mathematical function had a dividend
of zero.
Cycle the power.
Replace the control board. See
page 39 .
58 Start Prevent Startup has been prevented. Cancel prevention of startup if
cancellation can be done safely.
Remove Run Request.
65 I/O Removed An I/O option board has been
removed.
Clear the fault.
70 Power Unit Incorrect output power device
operation.
Check the power structure for damaged
components. Replace if defective.
Replace the power structure.
71 Periph Loss The 20-COMM-x communication
adapter has a fault on the network
side.
Check the DPI™ device event queue and
associated fault information for the
device.
No. Name Description Action (if appropriate)