Troubleshooting
142
Name
Description
Possible Causes & Corrective Action
Encoder Flt
The drive is in a run condition and the
encoder is:
•
not functioning
or
•
not connected.
or
•
phasing is not proper with the
motor
.
Encoder Should Match Motor Phasing
➲
Usually drive’s “HIT TORQUE LIMIT” alarm
message is displayed (depending on setting
of TRQ LIM MSG DLY (A1) parameter)
➲
Switch either two motor phases or swap two
encoder wires (A and /A)
Encoder Power Supply Loss
➲
Check 12 or 5 volt supply on terminal strip
Accurate Motor Parameters
➲
Verify motor nameplate values are entered
correctly
➲
Complete Adaptive Tune and Inertia
procedure
➲
As a last step, calculate motor parameters
from motor’s equivalent circuit.
Response of Speed Regulator
➲
Enter accurate INERTIA (A1) parameter,
see
section
0
for procedure.
➲
Increase RESPONSE (A1) parameter
Encoder Coupling Sloppy or Broken
➲
Check encoder to motor coupling
Excessive Noise on Encoder Lines
➲
Check encoder connections. Separate
encoder leads from power wiring (cross
power lead at 90
°
)
Other Conditions Causing Fault
➲
Check encoder count parameter ENCODER
PULSES (A1)
➲
Possible motor phase loss
➲
Possible bad Brake IGBT
Hardware Problem
➲
Replace Drive Control board.
EncoderFault
OFF
(alarm)
[closed-loop]
When the Encoder Fault is disabled
(ENCODER FAULT (C1) = disabled),
the drive will display the warning
message “EncoderFault OFF”, every
time the RUN command is removed.
Check Parameter Settings
➲
Check the setting of parameter ENCODER
FAULT (C1)
Extrn Fault 1
User defined external logic fault input
...Closure of this contact will cause the
drive to declare the fault
Check Parameter Settings and External Fault
Signal Wiring
➲
Check the correct logic input is configured for
the correct TB1 terminal and set to EXTRN
FAULT 1 (C2)
➲
Check external fault is on the correct terminal
on TB1.
Extrn Fault 2
User defined external logic fault input
...Closure of this contact will cause the
drive to declare the fault
Check Parameter Settings and External Fault
Signal Wiring
➲
Check the correct logic input is configured for
the correct TB1 terminal and set to EXTRN
FAULT 2 (C2)
➲
Check external fault is on the correct terminal
on TB1.
Содержание HPV 600
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