Parker iqan-mc3 - Page 62

59
Failure modes
Appendix B
Instruction book, IQAN-MC3
On - under current detection enabled
Failure mode Detected Comment
DOUT open •
DRET open •
DOUT A-C short circuit to +BAT • Detection is limited to this output.
Reverse feed * is not detected.
DOUT D-E short circuit to +BAT Reverse feed *.
No influence on function in this state.
DOUT short circuit to -BAT • Detected, or fuse blows.
DOUT short circuit to DRET • Detected, or fuse blows.
DOUT over current •
DRET short circuit to +BAT • Detected, or fuse blows.
Detection is limited to this output.
Reverse feed * is not detected.
DRET short circuit to -BAT No influence on function in this state.
DOUT short-circuit to 2
nd
DOUT
No influence on function in this state.
DOUT short-circuit to 2
nd
COUT
No influence on function in this state.
DOUT short circuit to 2
nd
CRET (active)
No influence on DOUT (error detected
on 2
nd
COUT).
DOUT short circuit to 2
nd
DRET (active)
•
DOUT short circuit to 2
nd
CRET/DRET
(passive)
No influence on function in this state.
DRET short circuit to 2
nd
DRET (active)
No influence on function in this state.
DRET short circuit to 2
nd
CRET (active)
No influence on DOUT (error detected
on 2
nd
COUT).
DRET short circuit to 2
nd
CRET/DRET
(passive)
No influence on function in this state.
Insufficient voltage on +BAT •