Troubleshooting
3-19
7000-TD002A-EN-P – September 2007
FAULT
MESSAGE
FAULT
CODE
DESCRIPTION
RECOMMENDED ACTIONS
Motor Flux UB
99
The measured Motor Flux has exceeded
Motor Flux Unbalance Trip (P585) for the
duration set in Motor Flux Unbalance Delay
(P586).
–
Verify the VSB resistors are not open
and that they are balanced
–
Check for Shorted Motor Output Filter
Capacitors
–
Check for a grounded phase on the drive
system using a megger test
Mstr Transfr Err
457 Master
transfer
Error
This is applicable to parallel drive only
–
The master drive cannot find a slave
drive able to take over as master
–
Possible causes are: slave drive not
ready, or slave drive masked off
MV in Gate Test
165
The drive has Medium voltage applied and
the user attempted to program the drive in
Gate Test. Isolate medium voltage from the
drive and then proceed with the test.
–
Check input contactor control and Status
–
Ensure that the isolation switch is in the
open position and locked out – Confirm
with hot-stick and status parameters
MV in System
Test
164
The drive has Medium voltage applied and
the user attempted to program the drive in
System Test. Isolate medium voltage from
the drive and then proceed with the test.
–
Check input contactor control and Status
–
Ensure that the isolation switch is in the
open position and locked out – Confirm
with hot-stick and status parameters
No Output Ctctr
169
This fault is specifically used for Open
Circuit Test Mode, which demands that an
Output Contactor be specified in IsoSw/Ctctr
Cfg (P192). If the contactor is not specified,
you will get this fault in Open Circuit Test
Mode. This is to help avoid inexperienced
people putting the drive in open circuit test
mode without actually open circuiting the
output with either a contactor or by
disconnecting the motor cables.
–
If there truly is no Output Contactor in the
system, then you can mask the fault.
Then there will be a No DO/OP Ctctr
warning, and you can continue with the
open circuit test after disconnecting
MOTOR cables
Process Var Loss
464
Feedback from the process is not valid.
–
Check the process sensor, 4-20mA or
0-10V input to the drive at IFM board
–
Check the wiring at IFM board and
connection between IFM and ACB.
PD Capcity Low
458
This fault is for parallel drives only and
indicates that the available drive capacity is
less than 50% of the motor rated current.
The drive cannot run.
–
The available drive capacity is less than
50% of the motor rated current. The
drive cannot run.
Pressure Loss
(C-Frame Only)
64
The measured system pressure has
dropped below a preset trip level. The
standard operating pressure is around
50psi. The pressure switch is not designed
to be an accurate measure of pressure, but
is designed as a Pressure/No Pressure
indication. Typically anything less than
20psi will activate this switch.
–
Check that the pumps are operating
–
Verify that there are no leaks in the
system
–
Verify that there is no blockage in the
system
Содержание PowerFlex 7000
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