TIGIEFFE Airo V Series, Use And Maintenance Manual

Page: 36 / 103

Use and Maintenance Manual - Series V8 E V10 E Page 36
28 28 PUMP VMN LOW Output voltage on pump lower
than required
A) If the problem occurs at startup (the line contactor LC is
not closed yet), check:
- Internal connections of the motor (ohmic continuity)
- Cable connections of the motor power
- If motor connection is OK, the problem is inside the
controller which must be replaced.
B) If the problem occurs after closing the LC (the LC line
contactor was closed and then reopens), check:
- Motor connections
- If the motor windings / cables have insulation losses
toward the machine chassis;
- If no problems are found on motors, the problem is inside
the controller which must be replaced;
C) If the alarm occurs during the motor operation, check:
- Motor connections
- If the motor windings / cable have insulation losses toward
the machine chassis;
- If the power contact of the LC line contactor engages
correctly with a strong contact;
- If no problems are found on motors, the problem is inside
the controller which must be replaced;
29 29 PUMP VMN HIGH Output voltage on pump higher
than required
It is recommended to check:
A) Motor connections;
B) If the motor windings / cables have insulation losses
toward the truck chassis;
C) If no problems are found on motors, the problem is inside
the controller which must be replaced;
30 232 CONT. DRV. EV Impossible to control the
ON/OFF output The device or its driver circuit is damaged, replace the
controller.
31 31 VMN HIGH Drive motor phase voltage too
high A) If the problem occurs at start-up (line contactor open),
check:
- The internal connections of the motor (ohmic continuity);
- Power cable connections of the motor;
- Loss of insulation between the motor and vehicle chassis;
If motor connections are OK, the problem is inside the
controller
B) If the alarm occurs during motor operation, check:
- Motor connections;
- If the motor winding / cables phases have insulation losses
toward the machine chassis;
- If the power contact of the line contactor goes off correctly
and keeps a solid contact;
If motors do not have any problems, the fault is in the
controller.
31 206 INIT VMN HIGH Initial motor drive phase voltage
too high
Please check
- The internal connections of the motor (ohmic continuity);
- Power cable connections of the motor;
- Loss of insulation of the motor on vehicle chassis;
If motor connections are OK, the problem is in the controller,
which must be replaced.
33 203 PUMP VMN NOT OK Initial pump voltage too low Please check:
- The motor connected to -P must be completely still before
this alarm is displayed.
The software will wait 30 seconds before displaying the
alarm code. During this time interval, the following warning
is displayed “WAIT MOTOR STILL”
- Internal connections of the motor;
- Power cable connections of the motor;
- Loss of insulation of the motor toward the vehicle chassis;
If motor connections are OK, the problem is in the controller,
which must be replaced.
34 37 CONTACTOR
CLOSED
Line contactor already closed at
start-up It is recommended that you check the LC power contacts;
Replace the line contactor if necessary.