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Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control User Manual

Page 447

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Troubleshooting

7-9

7000 “A” Frame

7000A-UM150F-EN-P – June 2013

FAULT

MESSAGE

FAULT

CODE

DESCRIPTION

RECOMMENDED ACTIONS

DI Iso Switch

29

The Drive Input Isolation Switch is in the
opposite state than expected, or the state
has changed during operation.

– Depending on the mode of operation

(Normal, System Test, Open-Circuit
Test, DC Current Test, or Open-Loop),

there are specific states for all the
possible system isolation switches (Refer
to the description of the Parameter 192 –

IsolSw/Ctctr Cfg in the parameters

manual)

– Ensure the isolation switches are in the

proper position

– Verify wiring feedback
– Verify isolation switch mechanical

auxiliary setup

DO Iso Switch

30

The Drive Output Isolation Switch is in the
opposite state than expected, or the state

has changed during operation.

OP Iso Switch

32

The System Output Isolation Switch is in the
opposite state than expected, or the state
has changed during operation.

BP Iso Switch

31

The Bypass Isolation Switch is in the
opposite state than expected, or the state

has changed during operation.

Drive OL

191

A Drive Overload condition has been
detected, where the overload condition is
calculated using DC Current Feedback
(P322) and an algorithm based on Drive

Overload Trip (P163) as the absolute trip
level, Drive Overload Delay (P164) as the

base trip delay, and Drive Overload Min
(P269) as initial detection level.

– Transient Loading – Check torque limit

and overload settings and compare
loading to torque settings and trip
settings

– Open Burden Resistor – Check Current

feedback and check the burden resistors

Dvc AK/Snubb

195

Device Anode-Cathode or Snubber fault

– NOT USED IN 5.xxxx

External 1-16

1-16

These are the optional additional External
Faults available when there is an additional

XIO board installed. This is configured with
XIO Ext Faults (P593), and this message

will appear if the specific input (1-16) is
configured in Fault Config as a Class 1 or
Class 2 fault.

– Review XIO Board Drawing:
– Identify source of Input from External

Fault XIO Board print and investigate the

cause of the 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