EP Equipment CPD30L1-B, Service Manual

Page: 153 / 235

REV. 05/2020
ELECTRICAL SYSTEM
9
141
Error Message
Possible cause Fault elimination
Error
Error text
175
SPEED FB.
ERROR
This alarm occurs if the absolute
position sensor is used also for
speed estimation. If signaled, it
means that the controller measured
that the engine was moving too
quick.
- Check that the sensor used
is compatible with the software
release.
- Check the sensor mechanical
installation and if it works properly.
- Also the electromagnetic noise
on the sensor can be a cause for
the alarm.
- If no problem is found on the
motor or on the speed sensor, the
problem is inside the controller, it
is necessary to replace the logic
board.
82
ENCODER
ERROR
This fault occurs in the following
conditions: the frequency supplied
to the motor is higher than 40 Hz
and the signal feedback from the
encoder has a jump higher than 40
Hz in few tens of milliseconds. This
condition is related to an encoder
failure.
- Check the electrical and the
mechanical functionality of the
encoder and the wires crimping.
- Check the mechanical installation
of the encoder, if the encoder slips
inside its housing it will raise this
alarm.
- Also the electromagnetic noise
on the sensor can be the cause
for the alarm. In these cases try to
replace the encoder.
- If the problem is still present after
replacing the encoder, the failure
is in the controller.
181
WRONG ENC
SET
Mismatch between “ENCODER
PULSES 1” parameter and
“ENCODER PULSES 2” parameter
Set the two parameters with the
same value, according to the
adopted encoder.
195
POS. EB.
SHORTED
The DC-link voltage drops to zero
when a high-side MOSFET is
turned on.
- Check that motor phases are
correctly connected.
- Check that there is no dispersion
to ground for every motor phases.
- In case the problem is not solved,
replace the controller.