Parker iqan-mc3, User Manual

Page: 63 / 66

60
Failure modes
Appendix B
Instruction book, IQAN-MC3
On - under current detection disabled
Failure mode Detected Comment
DOUT open No current through load.
DRET open No current through load.
DOUT short circuit to +BAT Reverse feed *.
No influence on function in this state.
DOUT short circuit to -BAT Thermal shutdown, or fuse blows.
DOUT short circuit to DRET Thermal shutdown, 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)
Thermal shutdown, or fuse blows.
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 Under current