Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 73)

4-46 Description of Features
1503-UM054C-EN-P – June 2013
MC Bad MC #1
This is a Fault condition and indicates that the IntelliVAC MC #1,
which is contained in the IntelliVAC Plus module, has a faulty
RS485 communications.
The 7-segment display will display the flashing character ‘1’.
MC Bad MC #2
This is a Fault condition and indicates that the IntelliVAC MC #2,
which is an external module, has a faulty RS485 communications.
The 7-segment display will display the flashing character ‘2’.
MC Bad MC #3
This is a Fault condition and indicates that the IntelliVAC MC #3,
which is an external module, has a faulty RS485 communications.
The 7-segment display will display the flashing character ‘3’.
MC Bad MC #4
This is a Fault condition and indicates that the IntelliVAC MC #4,
which is an external module, has a faulty RS485 communications.
The 7-segment display will display the flashing character ‘4’.
MC Bad MC #5
This is a Fault condition and indicates that the IntelliVAC MC #5,
which is an external module, has a faulty RS485 communications.
The 7-segment display will display the flashing character ‘5’.
Incorrect MC R
TERM
Installed
This is a Fault condition and indicates that there is an incorrectly
enabled RS485 termination resistor installed in an MC system.
In an MC system, where an IntelliVAC Plus and one or more
IntelliVAC MC units are installed, there must be a termination
resistor enabled on the last IntelliVAC MC unit in the system.
Therefore, for a two unit system, i.e. one IntelliVAC Plus and one
IntelliVAC MC unit, the termination resistor must be enabled on the
IntelliVAC MC unit.
Note:
There is no provision to install a termination resistor on the
IntelliVAC Plus unit as this unit already has this resistor permanently
installed.