Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 156)

DeviceLogix 9-33
1503-UM054C-EN-P – June 2013
IBX-Mechanical latch Fail to Trip
This is a fault bit which only applies to a mechanically latched
contactor. The bit is set if a mechanical latch contactor fails to open
after being given an open command.
IBX-Power up with contactor closed
This is a fault bit which applies only to an electrically held contactor.
The bit is set if the module powers up and detects that a contactor is
already closed before a close command is given. This fault may
indicate two potentially hazardous situations.
1) A mechanically latched contactor is installed instead of an
electrically held model,
2) The arcing contacts of the medium voltage contactor have failed
and the moving contacts have permanently welded together in
the closed position.
IBX- Contactor Fails To Pick UP
This bit is set if a contactor fails to pick up when a close command is
given.
IBX-Contactor drop out during hold
This is a fault bit associated with an electrically held contactor. It is
set if the contactor opens without the close command being removed.
IBX- Long Contactor Drop Out Time
This is a warning bit which is set when a contactor successfully
drops out but the drop out time exceeds the amount of time set in the
“drop out time” selection parameter. This can be indicative of
contactor wear or other mechanical stress or misalignment.
IBX- CPU malfunction
This is a fault bit which is set when the IntelliVAC Plus module
detects a main CPU malfunction on an associated IntelliVAC Base
module.
IBX - Power Up With Invalid Dip Configuration
This bit is set when a module is powered up with an invalid
configuration. This may that the configuration of the dips does not
match the contactor which is attached to the IntelliVAC, or that the
dip switches have been set to a combination which is not defined.