Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 171)

10-8 Troubleshooting
1503-UM054C-EN-P – June 2013
Table 10.C – IE Operational Trouble Shooting Procedures (cont.)
7-Segment
Display
State Condition/Possible Cause Corrective Action
‘1’
flash
Fault MC system bad MC #1
IntelliVAC MC #1 not communicating Check the interboard connector between the Basic
and Enhanced modules in the IntelliVAC Plus
module. Also, check the RS485 communications
cable between other IntelliVAC MC units, if they are
in the system.
‘1’
flash
Fault Incorrect R
TERM
Selected In an IntelliVAC MC system, an incorrect R
TERM
setting can
Cause communication errors which will generate this
fault. Set the R
TERM
resistor on only the last
IntelliVAC MC unit in an IntelliVAC MC system. In a
single unit IntelliVAC MC system, there is no need to
install an additional R
TERM
resistor as it is already
installed on the Enhanced module contained in the
IntelliVAC Plus unit.
‘2’
flash
Fault MC system bad MC #2
IntelliVAC MC #2 not communicating
Incorrect R
TERM
selected
1.Check the RS485 communications cable between
IntelliVAC MC unit #2 and other IntelliVAC MC units,
if they are in the system.
2.In an IntelliVAC MC system, an incorrect R
TERM
setting can cause communication errors which will
generate this fault. Set the R
TERM
resistor on only
the last IntelliVAC MC unit in an IntelliVAC MC
system
‘3’
flash
Fault MC system bad MC #3
IntelliVAC MC #3 not communicating
Incorrect R
TERM
selected
Check the RS485 communications cable between
IntelliVAC MC unit #3 and other IntelliVAC MC units,
if they are in the system.
In an IntelliVAC MC system, an incorrect R
TERM
setting can cause communication errors which will
generate this fault. Set the R
TERM
resistor on only
the last IntelliVAC MC unit in an IntelliVAC MC
system
‘4’
flash
Fault MC system bad MC #4
IntelliVAC MC #4 not communicating
Incorrect R
TERM
selected
Check the RS485 communications cable between
IntelliVAC MC unit #4 and other IntelliVAC MC units,
if they are in the system.
In an IntelliVAC MC system, an incorrect R
TERM
setting can cause communication errors which will
generate this fault. Set the R
TERM
resistor on only
the last IntelliVAC MC unit in an IntelliVAC MC
system
‘5’
flash
Fault MC system bad MC #5
IntelliVAC MC #5 not communicating
Incorrect R
TERM
selected
Check the RS485 communications cable between
IntelliVAC MC unit #5 and other IntelliVAC MC units,
if they are in the system.
In an IntelliVAC MC system, an incorrect R
TERM
setting can cause communication errors which will
generate this fault. Set the R
TERM
resistor on only
the last IntelliVAC MC unit in an IntelliVAC MC
system