MTU 20V4000Lx2x Operating Instructions Manual page 95

1.4550.131 – B - Internal Fault
Red alarm. Initiated by ProAct B-Bank.
Cause
Hardware not ready for operation.
1.4550.132 – B - Stop commanded (Run/Stop)
Yellow alarm. Initiated by ProAct B-Bank.
Cause
ProAct setting is not correct.
1.4550.133 – B - Input (Supply) Voltage Fault
Yellow alarm. Initiated by ProAct B-Bank.
Cause
Upper or lower supply voltage
limit reached.
1.4550.134 – B - Position Error
Red alarm. Initiated by ProAct B-Bank.
Cause
Position demand and feedback do
not match
1.4550.135 – B - Temperature Sensor Fault
Red alarm. Initiated by ProAct B-Bank.
Cause
Hardware not ready for operation.
1.4550.136 – B - Temperature derating active
Yellow alarm. Initiated by ProAct B-Bank.
Cause
The internal temperature is higher
than the limit.
1.4550.137 – B - Temperature above 120 °C
Red alarm. Initiated by ProAct B-Bank.
Cause
The internal temperature is higher
than the limit.
Corrective action
u Restart ProAct.
Corrective action
u Check setting.
Corrective action
1. Check supply voltage.
2. Check cabling.
Corrective action
1. Check mechanical system.
2. Restart ProAct.
Corrective action
u Restart ProAct.
Corrective action
1. Check room temperature. Restart ProAct.
2. Restart ProAct.
Corrective action
1. Check room temperature. Restart ProAct.
2. Restart ProAct.
MS150122/00E 2015-07 | Troubleshooting | 95