User manual

Page - 86/89 AE9ZP0BD - DUALAC2/&HP/POWER - User Manual
Cod
e
ALARM
STRING
Ma
ster
Slave
CONTROLLER
STATUS
DESCRIPTION
Condition that has to
occur to come out
from alarm status
Init Stby Motor
running
242
Ma
ster
PUMP
WARNING
X X X X Warning: Master
controller signals
that Slave µC has
detected a fault in
the pump
chopper
To remove warning
cause
243 PUMP INC.
START
X X X Warning: pump
chopper incorrect
start sequence
To remove warning
cause
244 PUMP VACC
NOT OK
X X X Warning: pump
chopper
accelerator
voltage is 1V
greater than the
minimum value
programmed
To remove warning
cause
245 PUMP TH.
SENS. KO
X X X X Warning: pump
chopper
temperature
sensor is out of
range
To remove Warning
cause
10.4 Analysis of pump related alarms displayed on console
1) PUMP VMN LOW
The pump chopper power output is feedback to the µC. If this feedback
voltage is not coherent with the applied PWM, this fault condition is signalled.
There could be many causes:
- failure in the pump chopper power section
- failure in the pump chopper driving section
- failure in the pump chopper voltage feedback circuit
- dispersion in the pump motor to truck frame.
2) PUMP STBY I HIGH
The pump chopper current sensor feedback is out of the zero-current window
while no PWM is applied to the pump chopper. The most likely cause is a
failure in the current sensor.
3) PUMP TEMPERATURE
Pump chopper temperature is higher than 75°C, maximum current is
proportionally reduced. If the alarm is present when the controller is cold,
there is a failure in the temperature sensor or in the feedback circuit.
4) PUMP WARNING
This is a warning in the MASTER controller, which inform that the SLAVE is
in a pump chopper related fault condition.
5) PUMP INC. START
This is a warning in the pump chopper, which inform that an incorrect start
sequence happened on the pump.