Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 79)

5-4 IntelliVAC Plus Basic Wiring
1503-UM054C-EN-P – June 2013
When configured for basic control the IntelliVAC Plus can be
applied with two- or three-wire control circuits. The control system
utilized will determine the configuration of the input wiring.
Consider the following input and output for the type of control used:
• Terminals 9 and 10 – Close Contactor/ IB-Input1
• Terminals 15 and 16 – Contactor Status
In either case, the CLOSE input must receive a maintained voltage
high to keep the contactor closed.
Notes:
1. When used with electrically held contactors, the IntelliVAC
allows close commands every six seconds. This is to ensure the
rated contactor duty cycle is not exceeded.
2. If the IntelliVAC powers up configured for an electrically held
contactor, and the vacuum contactor is detected as being closed,
the module will not respond to a close command until the vacuum
contactor auxiliary contact input is in the correct (closed) state
and module power is removed and re-applied.
3. In general, a Close command should only be applied 4 seconds
after energizing IntelliVAC.
Two-Wire Control
If using two-wire control, the CLOSE/ IB input 1 contactor input is
maintained high using a single contact. Momentarily opening this
input will cause the IntelliVAC to open the contactor. Maintaining
the contact will provide a CLOSE command to IntelliVAC (given
that all permissives are satisfied). If a fault occurs, in addition to
cycling control power to the IntelliVAC module, the CLOSE
command must be removed for a minimum of 4 seconds, before
being re-applied. Refer to Figure 5.3.
Some two-wire control schemes may be configured such that a close
command is present when IntelliVAC is energized. In this case, the
Power-Up Safety feature may be disabled by setting DIP switch 12
accordingly. Refer to Table 8.F.
A T T E N T I O N A T T E N T I O N
Only disable the Power-Up safety feature
when absolutely necessary. Doing so can
create unsafe operating conditions.
Wiring Guidelines
Electrically Held
Contactors