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Troubleshooting
130
Troubleshooting Guide
Below lists the HPV 900 Series 2’s faults,
alarms, and operator messages along with
possible causes and corrective actions.
Note:
fault
- a severe failure that will stop a drive
if it has been running and prevent the drive
from starting as long as it is present. All
faults require some type of action by the
user to clear.
alarm
- only meant for annunciation. It will
NOT stop the operation of the drive or
prevent the drive from operating.
operator message
- operator
communications message. It will NOT
stop the operation of the drive or prevent
the drive from operating.
Status LED Description
Possible Causes & Corrective Action
READY
(red)
The drive is ready to run meaning:
The software is up and ready.
No faults are present.
N/A
RUN
(red)
The drive is in operation.
RUN & DRIVE ENABLE
logic inputs true
Current being sent to the motor
N/A
USER
(red)
This LED is directly related to the
programming of USER LED (C3)
Check Parameter Setting
Check setting of USER LED (C3)
FAULT
(red)
The drive has declared a fault.
Fault Present in the Drive
Use digital operator to check the fault
TORQUE
LIMIT
(red)
The drive has reached its torque limit.
Incorrect Wiring
Motor phasing should match the encoder
feedback phasing. If the phasing is not
correct, the motor will not accelerate up to
speed. It will typically oscillate back and
forth at zero speed, and the current will be
at the torque limit.
Switch either two motor phases or swap two
encoder wires (A and /A).
Drive and/or Motor is Undersized
Verify drive and/or motor sizing. May need
a larger capacity HPV 900 Series 2 and or
motor.
Check Parameter Settings
Check the torque limit parameters MTR
TORQUE LIMIT and REGEN TORQ LIMIT
(A1)
– maximum 250% of drive continuous
current
Check speed regulator parameters
RESPONSE and INERTIA (A1)
Table 23: Status LED Troubleshooting Guide