Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 426)

7-4 Troubleshooting
7000-UM150I-EN-P – June 2013 7000 “B” Frame
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION RECOMMENDED ACTIONS
Air Filter 73 The Pressure drop at the input to the
converter section sensed by the pressure
transducer (as a voltage) has dropped
below the value set in Pressure Value Trip
(P319). This is dependent on the operation
of the Main Cooling Fan.
– Verify fan rotation
– Check for blocked airflow in the filters/
heatsinks/ ducting (if installed) – Clean as
required
– Improper Trip settings – Verify Pressure
Value voltage level when running with
clear air flow, and compare to expected
values for that specific drive type
– Verify Alarm and Trip set-up procedure
was completed adequately and adjust as
necessary
– Verify for drives with external ducting that
there is sufficient air to the drive input
– Verify supply voltage to differential
pressure transducer, and confirm output is
stable
Auxiliary Prot’n 141 Standard External Fault/Warning Input
included to allow the end-user to install a
protective relay/system status contact that
can activate a drive fault or warning,
depending on configuration of Aux Prot
Class (P445)
– Check device responsible for the
auxiliary contact to this input, and
investigate cause of the open contact
status
– Check the 120V signal through the
external device
– Check the XIO board inputs and
parameter status bits
Bad Reference 246 The CIB verifies a 2.5VDC reference in the
A-D converters during initial power up. If
this is missing, the A-D converters will not
respond as expected, and could cause
problems with functions including reference
commands
– Cycle control power to see if fault still
exists (Note: It can be reset, as it is only
checked on initial power up: Resetting
the fault is NOT an indication the
problem is cleared
– Replace CIB if fault persists
Cab Temp High
(C-Frame Only)
229 The drive has a temperature switch in
several cabinets, and all the N/C switches
are connected in series and fed back to the
XIO input. The levels are set differently for
different cabinets.
– Identify which switch has opened, and
focus on that cabinet
– Check for proper air flow within the
identified section
– Verify muffin fans are operating correctly
– Verify ambient temperature is within
tolerances
CIB A/Ds 240 CIB Hardware Fault – CIB Hardware Problem
– Cycle control voltage to the drive, and if
the problem still exists the CIB board
should be replaced
CIB Time Base 239 CIB Hardware Fault
CIB Heartbeat 197 The heartbeat link between the CIB and the
DCB-L has been lost. – Possible Failed CIB or DCB-L
– Check LED status and compare with
table in the manual
– Cycle control voltage to the boards, and
if the problem still exists replace the
CIB/DCB-L boards as necessary