Parker IQAN-MD3 - Failure Modes for VREF; Failure Modes for VIN; Failure Modes for DIN

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Failure Modes
Appendix B
Instruction book, IQAN-MD3
Failure modes for VREF
Failure modes for VIN
Failure modes for DIN
Failure mode Effect
1 +VREF Open VIN out of range, will create a VIN error =>
VIN=Predefined error value.
2 -VREF Open VIN out of range, will create a VIN error =>
VIN=Predefined error value.
3 +VREF Short-circuit to -VREF VREF error => VIN out of range, will create a VIN
error => VIN=Predefined error value.
4 +VREF Short-circuited to +BAT VREF error => VIN out of range, will create a VIN
error => VIN=Predefined error value.
5 +VREF Short-circuited to -BAT VREF error => VIN out of range, will create a VIN
error => VIN=Predefined error value.
6 -VREF Short-circuited to +BAT External fuse (if <7.5A) on +BAT blows.
7 -VREF Short-circuited to -BAT Not detected.
Failure mode Effect
1 VIN Open VIN out of range, will create a VIN error =>
VIN=Predefined error value
1
1. Measure is controlled by CAN master and application as a result from the CAN error
message. Turning outputs off is controlled by CAN master unit and therefore delayed
maximum 2 bus cycles.
2 VIN Short-circuited to +BAT VIN out of range, will create a VIN error =>
VIN=Predefined error value
1
3 VIN Short-circuited to -BAT VIN out of range, will create a VIN error =>
VIN=Predefined error value
1
Failure mode Effect
1 DIN Open No effect on module, not detected
2 DIN Short-circuited to +BAT No effect on module, not detected
3 DIN Short-circuited to -BAT No effect on module, not detected