Three-wire control – Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module User Manual

Page 80

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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.

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