Quattro DC Troubleshooting
107
Name Description
Possible Causes & Corrective Action
Fld PWM Set Hi
The FLD CARRIER FRQ (A4)
is set too high for the type of
Field Module detected.
Check Parameter Settings
Verify FLD CARRIER FRQ (A4) is set at or
below 10kHz when a standard field module is
being use.
Note: Drive automatically detects the type of field
module, either Low Voltage Field Module or
Standard Field Module.
Fld Over Curr
If field current exceeds 250%
the fault is declared
immediately.
If field current exceeds 150%
for 0.5 seconds, the fault will be
declared.
If field current is less than
110% no fault will be declared.
Check Parameter Settings
Verify parameter settings for motor field
control
Check motor field and wiring
Check motor field and wiring for short circuits
Note: This fault cannot be reset, unit must be
powered down before fault will clear.
Full Fld Time
Drive was commanded to
provide Full Field current but
not told to Start for longer than
the time set in FULL FIELD
TIME (A1)
Incorrect Start Timing
Check for proper drive Start sequencing
signals
Verify FULL FIELD TIME (A1)
Hit Torque Limit
(alarm)
The drive is or was being
limited by the motor current
limit setting. This can limit
acceleration rates and cause
subsequent velocity tracking
errors.
Incorrect Wiring
Verify motor armature circuit wiring
Verify motor field current is correct
Drive and/or Motor is Undersized
Verify drive and/or motor sizing. May need a
larger capacity Drive and / or motor.
Check Parameter Settings
Check the torque limit parameter MTR
TORQUE LIMIT (A1)
Alarm sensitivity - TRQ LIM MSG DELAY (A1)
parameter determines the amount of time the
drive is in torque limit before the alarm
message is displayed.
Problem in the motor fields
Verify that the motor field coils are operating
correctly, check DC resistance and perform an
AC drop test to verify.
HW/SW
Mismatch
Line side software is installed
in the motor side control board
and cube id is for motor side
Mismatching cube ids vs. software
Replace A2 board with correct software for
board location or program correct software
into Motor Side Board
Invalid
Checksum
(operator serial
link error)
The operator received four
consecutive invalid messages.
Noise or Bad Connector Connection
Remove and re-seat the operator in its cradle.
If re-occurs, the operator or the drive’s control
board may need to be replaced.
IP Comm
A fault has occurred in the
communications channel
between the Line side and
Motor side processors. This
was detected on the motor
side.
Communication problem
Reset drive
Verify Line Side software and Motor Side
software is compatible
If re-occurs, replace Main Processor PCBs
Replace the low voltage power supply
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