HELI CPD15, Operation & Service Manual

Page: 53 / 90

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(2) Common fault of pump control system (The second line of instrument indicates “ON
NODE 5”)
Table 4-6 Common fault of pump control system
Fault
Code
Implication Note Measures
13 EEPROM KO
EEPROM
damaged
The fault is in the internal memory for storing and
regulating parameters. When the fault appears, the
machine automatically stops. If the fault still exists, when
reconnecting it after switching off the electric lock,
change the controller. If the fault disappears, the
parameters previously stored will be replaced with default
value.
17
LOGIC
FAILURE #3
Logic card
failure 3
Current protection function failure of logic card: change
the controller.
18
LOGIC
FAILURE #2
Logic card
failure 2
Circuit failure of phase voltage feedback hardware on
logic card. Change the controller.
19
LOGIC
FAILURE #1
Logic card
failure 1
The failure produced when the function of low or over
voltage acts. In 24V system, the voltage detected by
controller exceeds 45V or lower than 9V. In 48V system,
the voltage detected by controller exceeds 65V or lower
than 11V. Possible causes:
(1) Check if there is short circuit in the electric circuit
system such as DC-DC and brake coils etc or if the input
power supply contact of controller is good.
(2) If the battery voltage is excessively low or high.
(3) Check B+ and B and see if the power cable on the
wiring terminal of contactor etc is tightly fixed.
(4) If the voltage calibration parameter of controller is in
consistent with actual voltage.
(5) There is circuit fault of overvoltage protection
hardware on logic card, change the controller.
30 VMN LOW Low VMN
Cause
：
The high-end voltage of MOS during startup is
66% smaller than the capacitor voltage or this voltage is
smaller than the required value in the operation of motor.
Possible causes:
(1) Wiring of motor is incorrect or there is circuit problem
in motor. Check if three-phase connection of motor is
correct, if there is any leakage of electricity on ground and
circuit break of motor coil.
(2) If actuation of main contactor is rigid and if there is
any wearing on contact?
(3) Change the controller .
31 VMN HIGH High VMN
Cause
：
During startup, the low-end voltage of MOS tube
is 10% higher than that of normal battery voltage or the
phase voltage is higher than 1/2 of battery voltage.
Possible cause
：
(1) The wiring of motor is incorrect or there exists
problem in motor circuit . Check if three-phase connection
of motor is correct, if there is any leakage of electricity on