EP Equipment CPD30L1-B, Service Manual

Page: 150 / 235

REV. 05/2020
ELECTRICAL SYSTEM
9
138
Error Message
Possible cause Fault elimination
Error
Error text
170
WRONG KEY
VOLT.
The measured key voltage is not
the right one for the inverter.
- Check if the SET KEY VOLTAGE
parameter in the ADJUSTMENT
list is set in accordance with the
key voltage.
- Check if the key voltage is ok
using a voltmeter, if not check the
wiring.
- In case the problem is not solved,
replace the logic board.
251
WRONG SET
BAT
At start-up, the controller checks the
battery voltage (measured at key
input) and it verifies that it is out of
a ±20% range around the nominal
value.
- Check that the SET BATTERY
parameter in the ADJUSTMENT
list matches the battery nominal
voltage.
- Through the TESTER function,
check that the KEY VOLTAGE
reading shows the same value as
the key voltage measured with a
voltmeter on pin A1. If it does not
match, then modify the ADJUST
BATTERY parameter according to
the value read by the voltmeter.
- Replace the battery.
196
MOT.PHASE
SH.36
MOT.PHASE
SH.37
MOT.PHASE
SH.38
Short circuit between two motor
phases. The number that follows
the alarm identifies where the short
circuit is located:
- 36 U – V short circuit
- 37 U – W short circuit
- 38 V – W short circuit
- Verify the motor phases
connection on the motor side
- Verify the motor phases
connection on the inverter side
- Check the motor power cables.
- Replace the controller.
- If the alarm does not disappear,
the problem is in the motor.
Replace it.
53 STBY I HIGH
In standby, the sensor detects a
current value different from zero.
The current sensor or the current
feedback circuit is damaged.
Replace the controller.
180 OVERLOAD
The motor current has overcome
the limit fixed by hardware.
Reset the alarm by switching key
off and on again.
If the alarm condition occurs again,
ask for assistance to your dealer
technician. The fault condition
could be affected by wrong
adjustments of motor parameters.