Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 469)

Troubleshooting 7-47
7000 “B” Frame 7000-UM150I-EN-P – June 2013
WARNING
MESSAGE
WARNING
CODE
DESCRIPTION RECOMMENDED ACTIONS
XIO Card #1-6 Loss 81-86 An XIO card has dropped off the
communications link between the XIO cards
and the CIB. – Reset the board in an attempt to re-
establish communications.
– Check all connections between the
Customer Interface Board and the
jumpers between individual adapters
– Verify the status of all XIO adapters by
comparing the LED status to the table in
the manual.
XIO Power Loss 108 The 24V to the XIO boards has dropped
below the set trip level, which is 95% of
rated voltage.
– Verify DC/DC power supply output
– Confirm wiring to the CIB from the
DC/DC Power Supply
– Check XIO LED status and compare to
values in the manual
Zero Slip 28 The value for Rated Motor RPM (P26) is the
same as speed calculated from Motor Poles
(P99) and Rated Motor Frequency (P29).
– Verify Rated Motor RPM is less than
synchronous speed
U1A Device Wrn 228 INVERTER SGCT WARNING
FOR REDUNDANT DEVICES or N-1
CAPABILITY ONLY
This warning will only occur during the initial
contactor closure and the diagnostic
sequence after a start command. The
inverter monitors the state of the feedback
before a gate pulse is given, and monitors
the feedback after a gate pulse has been
sent. The SGCT has smart diagnostics, so
the feedback may indicate short before
firing, and if the pulse is received and the
device is really shorted, the diagnostic will
toggle the feedback to let you know the
problem is with the device, or the power
supply for that device.
The firmware now completes a diagnostics
sequence immediately after any drive reset,
with the goal of detecting problems before
any destructive action is taken from the next
action
– Complete a resistance check per the
instructions in the manual
– NOTE: SGCTs may not have completely
shorted, and still could read in the kΩ
range – Any devices with low suspect
readings should be changed in matched
sets during the next outage
– Check the LED status of the SCGT gate
driver card for abnormal readings
– Complete a Gating Test mode check on
the devices
– Verify the associated 20V power supply
is powered and active
– Verify all the power connections to the
SCGT firing card are seated properly
– NOTE: For Redundant devices, there
will be no change in the drive operation.
For N-1 drives, the drive will attempt to
run at a load/speed combination that
does not exceed the voltage rating of the
remaining devices.
U1B Device Wrn 234
U1C Device Wrn 246
U4A Device Wrn 231
U4B Device Wrn 237
U4C Device Wrn 249
V3A Device Wrn 230
V3B Device Wrn 236
V3C Device Wrn 242
V6A Device Wrn 233
V6B Device Wrn 239
V6C Device Wrn 251
W2A Device Wrn 229
W2B Device Wrn 235
W2C Device Wrn 247
W5A Device Wrn 232
W5B Device Wrn 238
W5C Device Wrn 250