Three-wire control – Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module User Manual
Page 80
IntelliVAC Plus Basic Wiring 5-5
1503-UM054C-EN-P – June 2013
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
EMERGENCY STOP
(when required)
M
1
2
4
3
11
6
12
5
CONTROL POWER
Figure 5.3 – Two-Wire Control
Three-Wire Control
If using three-wire control, the CLOSE contactor input is maintained
high using two contacts. Momentarily opening this input will cause
the IntelliVAC to open the contactor. Momentarily closing the
START contact will provide a CLOSE command to IntelliVAC
(given that all permissives are satisfied).
In this configuration, the STATUS output acts as a seal-in contact. If a
fault occurs, in addition to cycling control power over to the IntelliVAC
module, the CLOSE command must be removed for a minimum of 4
seconds before being re-applied. Refer to Figure 5.4.
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.
* Refer to Appendix A for recommended sizing.