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Troubleshooting and Diagnostics
Fault Cause Remedy
(1)
Digital Input
Configuration fault
(P121...P123)
More than one digital input set for
the same function
Each setting can only be used once
(except settings 0 and 3)
Only one digital input configured for
MOP function (Up, Down)
One input must be set to MOP Up,
another must be set to MOP Down
PID mode is entered with setpoint
reference and feedback source set
to the same analog signal
Change PID setpoint reference
(P1
21…P123) or feedback source
(P201).
One of the digital inputs (P121…
P123) is set to 10 and another is
set to 11…14.
Reconfigure digital inputs
One of the digital inputs (P1
21…
P123) is set to 11 or 12 and another
is set to 13 or 14.
PID enabled in Vector Torque mode
(P200 = 1
or 2 and P300 = 5)
PID cannot be used in Vector
Torque mode
Remote keypad fault Remote keypad disconnected Check remote keypad connections
Low DC Bus Voltage fault Mains voltage too low Check mains voltage
No Motor ID fault An attempt was made to start the
drive in Vector or Enhanced V/Hz
mode prior to performing the Motor
Auto-calibration
See P300…P399 for Drive Mode
setup and calibration.
Module communication
fault
Communication failure between
drive and Network Module.
Check module connections
Network Faults Refer to the module documentation.
for Causes and Remedies.
Output fault:
Transistor fault
Output short circuit Check motor/motor cable
Acceleration time too short Increase P1
04, P125
Severe motor overload, due to:
• Mechanical problem
•
Drive/motor too small for
application
• Check machine / system
• Verify drive/motor are proper size
for application
Boost values too high Decrease P16
8, P169
Excessive capacitive charging
current of the motor cable
• Use shorter motor cables with
lower charging current
• Use low capacitance motor
cables
• Install reactor between motor and
drive.
Failed output transistor Contact factory technical support
Output fault: Ground fault Grounded motor phase Check motor and motor cable
Excessive capacitive charging
current of the motor cable
Use shorter motor cables with lower
charging current
(1) The drive can only be restarted if the error message has been reset