31
Error messages and actions
Appendix B
Instruction book, IQAN-MD3
Appendix B
Error messages and actions
If a fault is detected, a message will be presented on the display.
W
ARNING
An error message could indicate that a hazardous situation exists. If precautions are not
taken, this could result in death, serious injury or major property damage.
Failure Modes
The following tables contain information about the different possible failures that could
occur for each module subsystem. In most cases when an error is detected, a message
will be presented on the master display. In some cases, the master will turn off or at
least shut down the outputs, to increase safety.
Failure modes for CAN interface
Failure mode
Effect
1
CAN-H to -BAT
No CAN communication. All output turned off.
2
CAN-L to -BAT
No CAN communication. All output turned off.
3
CAN-H to +BAT
No CAN communication. All output turned off.
4
CAN-L to +BAT
No CAN communication. All output turned off.
5
CAN-L open circuit
No CAN communication. All output turned off.
6
CAN-H open circuit
No CAN communication. All output turned off.
7
CAN-L to CAN-H
No CAN communication. All output turned off.
8
CAN-termination failure, termina-
tion on
No effect
9
CAN-termination failure, termina-
tion off
Dependent on CAN size and number of CAN nodes.