Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control User Manual
Page 479

Troubleshooting
7-41
7000 “A” Frame
7000A-UM150F-EN-P – June 2013
WARNING
MESSAGE
WARNING
CODE
DESCRIPTION
RECOMMENDED ACTIONS
Invld Mstr R
344
Invalid Master request-slave only
– Drive tried to become master when
another master was already active
Iso Fn1 Cntr
329
Isolation Transformer Fan 1 contactor
– Isolation transformer Fan 1 status is
NOT HIGH while the drive asked the
contactor to be closed.
Iso Fn2 Cntr
330
Isolation Transformer Fan 2 contactor
– This warning occurs when the drive
commands the Isolation Transformer
Fan 2 contactor to close, and does not
detect the status feedback from the
contactor.
Iso Fn1 Loss
331
Isolation Transformer Fan 1 Loss
– This warning occurs when the drive
detects a loss of pressure or a loss of
Fan 1 contactor feedback when running
on Fan 1.
Iso Fn2 Loss
332
Isolation Transformer Fan 2 Loss
– This warning occurs when the drive
detects a loss of pressure or a loss of
Fan 2 contactor feedback when running
on Fan 2.
IsoTx Air Filter
(A-Frame Only)
26
The Pressure sensed by the pressure
transducer in the integral Isolation
Transformer section (as a voltage) has
dropped below the value set in Pressure
Value Transformer Warning (P655).
– Verify fan rotation
– Blocked airflow in the filters / ducting (if
installed) – Clean as required
– Improper Warning settings – Verify
Pressure Value voltage level when
running with clear air flow
– 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 pressure
transducer, and confirm output is stable
IxoTx Fan On
328
Isolation Transformer Fan ON warning
– Isolation transformer Fan status is high
while it should be low.
L Comm Low
55
Indicates that the Autotune Lc (P217)
measured was less than 0.02 pu and the L
Commutation (P140) will have to be tuned
manually.
– REFER TO THE POWERFLEX 7000
SERIES B MANUAL (CHAPTER 4 –
COMMISSIONING) ON AUTOTUNE
PROCEDURES, RESULTS, AND
ACTIONS
L Comm High
56
Indicates that the Autotune Lc (P217)
measured was greater than 0.15 pu and the
L Commutation (P140) will have to be tuned
manually.