Hyundai 10BOP-7 Operation Manual page 202

Code Code Alarm Alarm
30 VMN LOW
Traction Traction Pump Pump EPS EPS
(P) (P) (E) (E)
(T) (T)
Description Description
Cause 1 : start-up test.
Before switching the LC on, the software checks the
power bridge: it turns on alternatingly the High side
Power Mosfets and expects the phases voltage to
increase toward the rail capacitor value. If the phases
voltage does not increase, this alarm occurs.
Cause 2 :
Motor running test. When the motor is running, power
bridge is ON, the motor voltage feedback is tested; if it is
lower than commanded value, fault status is entered.
Troubleshooting :
A) If the problem occurs at start up (the LC does not
close at all), check :
- Motor internal connections (ohmic continuity)
- Motor power cables connections
- Motor leakage to truck frame
- If the motor connections are OK, the problem is
inside the controller
B) If the alarm occurs during motor running, check :
Motor connections
-
- If motor phases windings/cables have leakages
towards truck frame
- That the LC power contact closer properly, with a
good contact
- If no problem are found on the motors, the problem
is inside the controller.
Cause 1:
Start-up test. Before switching the LC on, the software
checks the power bridge: it turns on alternatingly the
High side Power Mosfets and expects the phases
voltage to increase toward the rail capacitor value. If the
phases voltage is less than 66% of the rail capacitor
voltage, this alarm occurs.
Cause 2 :
Motor running test. When the motor is running, power
bridge is ON, the motor voltage feedback is tested; if it is
lower than commanded value (a window of values are
considered) fault status is entered.
Troubleshooting :
A) If the problem occurs at start up (the LC does not
close at all), check :
- Motor internal connections (ohmic continuity)
- Motor power cables connections
- Motor leakage to truck frame
- If the motor connections are OK, the problem is
inside the controller, replace it.
B) If the alarm occurs during motor running, check :
-
Motor connections
-
If motor phases windings/cables have leakages
towards truck frame
-
That the LC power contact closer properly, with a
good contact
-
If no problem are found on the motors, the problem
is inside the controller, replace it.
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