Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 165)

10-2 Troubleshooting
1503-UM054C-EN-P – June 2013
Table 10.A – IB Operational Troubleshooting Procedures (cont.)
LED Color
State Condition/Possible Cause Corrective Action
Module
Status
Contactor
Status
Yellow Yellow Warning The mechanical latch contactor failed to
trip.
Trip command not present.
Contactor Auxiliary status missing
Trip coil open
Check that the Trip command is present
on the Trip input and that the voltage is
greater than or equal to the minimum
level listed in the Electrical Specifications
section.
Check that the Contactor Auxiliary status
connection between the contactor and
TB2-11/1,2 on the IntellilVAC Plus is
correct.
Check that there is not a Trip Coil open
message fault on DeviceNet or that the
Coil Open fault is not present on the Plus
Status LED. This could be caused by a
bad (open) coil or an open coil
connection.
Red
2 flash
Yellow Fault Power up with contactor Closed.
Contactor Auxiliary status missing
Contactor Auxiliary status contact bad
Contactor bottles bad
Obstruction in contactor
Check that the Contactor Auxiliary status
connection between the contactor and
TB11/1,2 on the IntelliVAC Plus is correct.
Check that the contactor Auxiliary status
contacts are functioning.
Check that the contactor bottles are not
welded closed.
Check that there is not an obstruction (or
possible binding in the contactor pivot
points) in the contactor which prevents
the bottle armature from opening.
Yellow -
Red
1 flash
Off/Yellow
(depends
on status
of
contactor)
Warning Contactor fails to pick up
Contactor Auxiliary status missing
Obstruction in contactor
1. Check that the Contactor Auxiliary
status connection between the
contactor and TB11/1,2 on the
IntelliVAC Plus is correct.
2. Check that there is not an obstruction
(or possible binding in the contactor
pivot points) in the contactor which
prevents the bottle armature from
closing.
Yellow -
Red
2 flash
Off/Yellow
(depends
on status
of
contactor)
Warning Contactor drop out during hold
Contactor Auxiliary status missing
Faulty contactor coil
1. Check that the Contactor Auxiliary
status connection between the
contactor and TB11/1,2 on the
IntelliVAC Plus is correct.
2. Check the condition of the main
contactor coil.