Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 431)

Troubleshooting 7-9
7000 “B” Frame 7000-UM150I-EN-P – June 2013
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION RECOMMENDED ACTIONS
will appear if the specific input (1-16) is
configured in Fault Config as a Class 1 or
Class 2 fault.
– Verify voltage signals from external
sources
Ext Cooling Loss
(C-Frame only)
224 The drive has detected the loss of the ability
to provide cooling for the drive. This is
detected through feedback from the Heat
Exchanger Cooling fans contactors and
overloads.
– Review the inputs to the drive Liquid
Cooling XIO and determine the source of
the missing signals
– Investigate the Heat Exchanger fans and
control for a cause
Field Loss 35 This fault indicates that the field current is
either missing or insufficient. This is done
through an indirect method by checking if
the drive is in Flux Regulator limit for the
delay set in Field Loss Delay (P559). This
means your exciter reference I Field
Command (P314) is at 100% for the time of
the delay.
– Verify the field current from the exciter is
present
– Verify the analog output from the drive is
reaching the field exciter control circuit
Gate Test Pwr On 196 The temporary power supply harness used
for Gating Tests on the SCR rectifiers has
not been removed from the DC/DC Power
Supply, and you have attempted to start the
drive.
– Remove the test harness from the drive
immediately after Gate Test is finished
– Verify fault detection wiring is per the
drawings, and measure the voltage on the
trip signals back to the CIB. The 5VDC is
supplied from the CIB to the fault circuit,
and is pulled low on the power supply
when healthy.
– Replace the DC/DC Power Supply if the
harness is removed and the fault can not
be cleared
GND Offset 245 CIB Hardware Fault – CIB Hardware Problem
– Cycle control Power to the drive, and if
the problem still exists the board should
be replaced
Ground OC 173 The Ground Current measured on the
Ground Fault CT has exceeded the value in
Ground Fault Overcurrent Trip (P171) for
the duration set in Ground Fault Overcurrent
Delay (P172). The GFCT (Zero-Sequence
CT) is not installed in all drives.
– Verify the Burden resistor has not
opened
– Verify parameters are set properly
– Megger the drive and motor and input
transformer/AC line reactor to search for
a ground fault in the system
Input Prot’n #1 135 Standard External Fault/Warning Input
included to allow the end-user to install a
protective relay (IE Input Feed Protection
Relay) auxiliary contact that can activate a
drive fault or warning, depending on
configuration of InputProt1 Class (P440).
– Check device responsible for the
auxiliary contact to this input and
investigate the fault indicated by the
device‟s fault message
– Investigate internal and external causes
for this fault code
– Check the 120V signal through the
external device
– Check the XIO board inputs and
parameter status bits
InputProt’n #2 140 Standard External Fault/Warning Input
included to allow the end-user to install a
protective relay (IE Input Feed Protection
Relay) auxiliary contact that can activate a
drive fault or warning, depending on
– Check device responsible for the
auxiliary contact to this input and
investigate the fault indicated by the
device‟s fault message
– Investigate internal and external causes