Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 74)

Description of Features 4-47
1503-UM054C-EN-P – June 2013
See Table 8.K for a definition of which IntelliVAC unit is to have
the termination resistor inserted.
See Table 8.J for instructions detailing how to enable the
termination, resistor using the DIP switches on the MC board.
The 7-segment display will display the flashing character ‘6’.
System Lock-Out State
This is a Fault condition and indicates that in an MC system
configuration, a particular fault has been reset three times without
having the fault clear. This indicates that the fault is problematic and
that the problem needs to be inspected. An MC system will not
accept any command inputs, when in the ‘System Lock-Out’ state.
The 7-segment display will alternate between displaying the
character ‘L’ + and the MC address which is ‘1’.
Bad/No DeviceLogix Program for MC
This is a Fault condition and indicates that in the DeviceLogix
Custom configuration (module #0), either there is no program
present or there is an operational error present. A possible error
would be to have both the Set and Reset inputs of an R-S flip flop set
to an active level. Normally the error would have been flagged by
the software that generated the DeviceLogix program, such as
RSNetWorx, but could still have been downloaded to the IntelliVAC
Plus unit.
The 7-segment display will display the solid character ‘3’.
Lost +15V Rail from IB1
This is a Fault condition which indicates that the Basic module,
within the IntelliVAC Plus, has lost its internal DC power. Because
of this, the Basic module is not operational so that contactor control
cannot be performed. The reason for the loss of the Basic module
power may be due to loss of the mains input power or because of a
faulty internal power supply.
Note: The ‘IB1 Power Loss’ fault in Table 4.F and the ‘Lost
+15V Rail From IB1’ fault in Table 4.J, are the same
faults. This duplication is provided so that if there are
multiple faults present, in an IE unit, from either Table
4.F or Table 4.J, then a user will still have an indication
of the IB1 power loss from one of the indicators (LED or
7-segment LED display).