37
2
“VMN HIGH” Motor voltage is too high
Cause 1
：
before closed main contactor switch , with the software testing power bridge: alternate closed above
power MOS tube, hope to increase phase voltage to power capacitor voltage value, if phase voltage not
increase, will fault alarm
Cause 2
：
The fault diagnosis program is skipped will happen fault alarm when starts, therefore closed main
contactor. In this condition, we hope to get the phase voltage less than half of the battery voltage. If
this value is higher than that failure
Solution
：
A
）
If the problem occurred in start-up (main contactor not closed), detection
：
- Motor internal connection
- The motor power cable connection
- If motor connected correctly, it may be that the fault of the controller
B) after close the main contactor switch, fault detection.
：
-
Motor connection
-
whether is Motor coil/ cable leakage to frame or not
-
Controller fault if the motor is normal
4
）
“POWER MOS SHORTED”
Cause
：
before close the main contactor,detected the power bridge use soft
：
close the top and bottom
MOS tube alternately
，
in the hope of reducing phase voltage to battery negative extreme value
（
(increase phase voltage reachs to battery positive value). If phase voltage is not in conformity with
the requirements, will failure.
Solution ways
：
The fault type has no relationship with external constitute, change the controller
5
）
“COIL SHORTED HW KO” coil shorted hardware damaged
Cause
：
hardware circuit of main contactorand electromagnetic brake coil,which used in short-circuit
protection is fault.
Solution
：
This fault type has no relationship with external constitute,replace the controller.
6
）
“COIL SHORTED”
Cause
：
one of COMBIAC1 outputing winding shorted
（
main contactor or electromagnetic brake coil
shorted
）
will be alarm
。
Operation request activated alarm disappear automatically without overloaded condition.
Solution ways
：
A) The typical cause of coil shorted is loading coils or output the first step will be detect the controller
output and laden connection
。
B) The fault will not happen in external connection, the controllert has the problem , need to
replace the controller
。
7) “DRIVER SHORTED”
