EP Equipment CPD30L1-B, Service Manual

Page: 146 / 235

REV. 05/2020
ELECTRICAL SYSTEM
9
134
Error Message
Possible cause Fault elimination
Error
Error text
19
LOGIC FAILURE
#1
This fault is displayed when the
controller detects an undervoltage
condition at the key input (A1).
Undervoltage threshold depends on
the nominal voltage of the controller.
Fault at startup or in standby:
- Fault can be caused by a key
input signal characterized by
pulses below the undervoltage
threshold, possibly due to external
loads like DC/DC converters
starting-up, relays or contactors
during switching periods, solenoids
energizing or de-energizing.
Consider to remove such loads.
- If no voltage transient is detected
on the supply line and the alarm is
present every time the key
switches on, the failure probably
lies in the controller hardware.
Replace the logic board.
Fault displayed during motor
driving:
If the alarm occurs during motor
acceleration or when there is a
hydraulic-related request, check
the battery charge, the battery
health and
power-cable connections.
18
LOGIC FAILURE
#2
Fault in the hardware section of the
logic board which deals with voltage
feedbacks of motor phases.
The failure lies in the controller
hardware. Replace the controller.
17
LOGIC FAILURE
#3
A hardware problem in the logic
board due to high currents
(overload). An overcurrent condition
is triggered even if the power bridge
is not driven.
The failure lies in the controller
hardware. Replace the controller.
220
VKEY OFF
SHORTED
The logic board measures a key
voltage that is constantly out of
range, below the minimum allowed
value.
- Check that the battery has the
same nominal voltage of the
inverter.
- Check the battery voltage, if it is
out of range replace the battery.
- In case the problem is not solved,
replace the logic board.