Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 525)

Troubleshooting 7-41
7000 “C” Frame 7000L-UM300I-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.