Rockwell Automation 1503 IntelliVAC Contactor Control Module - Series C and later - Manual (Page 26)

Installation and Wiring 3-13
1503-UM052D-EN-P – June 2013
Two-Wire Control
If using two-wire control, the CLOSE 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 3.7.
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 4.B.
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.
A T T E N T I O N A T T E N T I O N
For Emergency Stop applications requiring
removal of power, a contact should be placed in
the “L1” control power rung to the IntelliVAC.
If the TDUV feature is used, the contactor will
not open until the programmed TDUV time
has expired.
CONTROL
POWER
FUSE
CAPACITOR
(OPTIONAL) M-IV
EC TCO
AUX CCO
L2/N L1 G
MOV
M
OVERLOAD RUN
M-IV
CLOSE
* Refer to Table 3.A for recommended fuse sizing.
EMERGENCY STOP
(when required)
M
1
2
4
3
11 6
12 5
CONTROL POWER
Wiring Guidelines Electrically
Held Contactors (cont.)