Installation and wiring 3-13 – Rockwell Automation 1503VC IntelliVAC Contactor Control Module User Manual

Page 25

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Installation and Wiring

3-13

1503-UM051D-EN-P – June 2013

CLOSE COMMAND

TO MICRO

MICRO OUTPUT
TO CLOSE COIL

CONTACTOR STATUS

RELAY OUTPUT

CONTACTOR

AUXLIARY

INPUT TO MICRO

CLOSE LEVEL OF

CURRENT TO CLOSE

COIL

MODULE STATUS

RELAY OUTPUT

X

X

Contact status relay closes on request to close. It will open if the contactor auxiliary contact does not close within 200 milliseconds and

module will fault (opening module status relay).

15mS

200mS

90mS

(@120VAC)

80mS

60mS

5mS

SELECTABLE DROP

OUT TIME

(0 TO 190mS)

CLAMP DELAY

DEBOUNCE

NATURAL

CONTACTOR

DROP OUT

CONTACTOR PICK UP

ACKNOWLEDGE

WINDOW

DEBOUNCE

30mS

Y

For this example, the 130 millisecond drop-out time has been selected. The base drop-out time is 50 milliseconds. The microcontroller delay is

130-50=80 milliseconds.

15mS

Y

Figure 3.11 – Timing Diagram 400A (Electrically Held) Contactor

with IntelliVAC Control for three-wire Control

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