MTU 20 V 4000 G23 Operating Instructions Manual page 88

407 – AL Open Load Digital Input 8
Cause
Open circuit at digital input 8;
cabling faulty or no resistance
across the switch.
408 – AL Open Load Emerg. Stop Input ESI
Cause
Open circuit at input for
emergency stop; cabling faulty or
no resistance across the switch.
410 – LO U-PDU
Limit value 1
Cause
Injector voltage too low.
411 – LOLO U-PDU
Limit value 2
Cause
Injector voltage too low.
412 – HI U-PDU
Limit value 1
Cause
Injector voltage too high.
88 | Troubleshooting | MS150093/01E 2012-06
ZKP-Number: 2.8006.632
Corrective action
1. Check cabling.
2. Check input of target device.
3. Contact Service.
ZKP-Number: 2.8006.633
Corrective action
1. Check cabling.
2. Check input of target device.
3. Contact Service.
ZKP-Number: 2.0141.921
Corrective action
1. Check cabling.
2. Check power supply.
3. Contact Service.
ZKP-Number: 2.0141.922
Corrective action
1. Check cabling.
2. Check power supply.
3. Contact Service.
ZKP-Number: 2.0141.931
Corrective action
1. Check cabling.
2. Check power supply.
3. Contact Service.