Chapter 7 – Fault Tracing
7-4
ACA 635 IGBT Supply Sections
CH0 COM LOST
Par. 9.02 bit 12
Par. 9.11 bit 10
Communication break detected on CH0
receive.
(programmable fault, see Parameter 70.05)
Check the fibre optic cables between the
NAMC board and overriding system (or
fieldbus adapter). Test with new fibre optic
cables.
Check that the CH0 node address (Parameter
70.01) is correct in the ISU.
Check the status of the fieldbus adapter. See
appropriate fieldbus adapter manual.
Check parameter settings of Group 51, if a
fieldbus adapter is present. Check the
connections between the fieldbus and the
adapter.
Check that the bus master is communicating
and correctly configured.
DC OVERVOLT
Par. 9.01 bit 2
Par. 9.11 bit 15
Intermediate circuit DC voltage is excessive.
This can be caused by
1. static or transient overvoltages in the mains.
2. too high supply voltage during
synchronisation.
The default trip limit is 740 V d.c for 415 V
units, 891 V d.c for 500 V units and 1230 V d.c
for 690 V units. The trip limit can be changed
with Par. 30.11 DC OVERVOLT TRIP.
Check the level of supply voltage, DC voltage
and converter nominal voltage.
DC UNDERVOLT
Par. 9.02 bit 2
Par. 9.11 bit 14
Intermediate circuit DC voltage is not sufficient.
This can be caused by a missing mains phase,
a blown fuse or a rectifier bridge internal fault.
The default trip limit is 293 V d.c for 415 V
units, 354 V d.c for 500 V units and 488 V d.c
for 690 V units. The tip limit can be changed
with Par. 30.12 DC UNDERVOLT TRIP.
Check supply and inverter fuses.
Check supply voltage.
DI5 = 0
Par. 9.11 bit 2
Digital input DI5 is OFF (0).
Check the function indicated via digital input
DI5.
E EARTH FLT
Par. 9.11 bit 4
IT Network
Impedance between a live part (e.g. phase
conductor, DC link, motor cable or motor) and
earth/ground is too low.
Earth fault in AC filter, line converter, DC link,
inverter(s), motor cables or motor.
Check motors.
Check motor cables.
Check ISU.
Check inverter(s).
Check AC filter.
EARTH FAULT
Par. 9.01 bit 4
Par. 9.11 bit 12
Earthed/grounded Network
The sum of line currents measured with internal
current transducers is too high.
Earth fault in AC filter, line converter, DC link,
inverter(s), motor cables or motor, or current
unbalance in parallel connected converters.
Check motors.
Check motor cables.
Check the ISU fuses (parallel connected units).
Check the ISU.
Check inverter(s).
Check AC filter.
Fault Messages
Fault Text
Cause
What to do
Summary of Contents for ACS 600 MultiDrive
Page 4: ......
Page 8: ...Safety Instructions vi ACA 635 IGBT Supply Sections ...
Page 57: ...Chapter 7 Fault Tracing 7 8 ACA 635 IGBT Supply Sections ...
Page 99: ...Appendix B Circuit Diagrams B 2 ACA 635 IGBT Supply Sections H ...
Page 100: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 3 ...
Page 101: ...Appendix B Circuit Diagrams B 4 ACA 635 IGBT Supply Sections ...
Page 102: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 5 ...
Page 103: ...Appendix B Circuit Diagrams B 6 ACA 635 IGBT Supply Sections ...
Page 104: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 7 ...
Page 105: ...Appendix B Circuit Diagrams B 8 ACA 635 IGBT Supply Sections ...
Page 106: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 9 ...
Page 107: ...Appendix B Circuit Diagrams B 10 ACA 635 IGBT Supply Sections ...
Page 108: ......
