Lift-Master 1A4747 User Manual

1A4747 Auxiliary Contacts Option Board

Commercial door operator accessory for use only with Liftmaster solid state commercial door operators.

WARNING

TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM ELECTROCUTION, DISCONNECT ELECTRICAL POWER TO OPERATOR BEFORE PROCEEDING.

NOTE: Power for devices controlled by the auxiliary

contacts to be supplied from an external source.

Green Lights 1C4653

AUX CONTACTS

TB1-

1OPEN -CLOSE- 2 3123

TB2-

Terminals

14LG419B

+24V +5V

R9 Q1

R1 R10C1C2

Auxiliary Contacts Option Board

The Auxiliary Contacts Option Board has both normally-open and normally-closed contacts that actuate when the door is opening, closing and when the unit is powered down.

CAUTION

TO AVOID DAMAGE TO RELAYS, DO NOT EXCEED MAXIMUM CONTACT RATING OF 10A @ 240VAC. NOT APPLICABLE FOR INCANDESCENT LOADS.

INSTALLATION: Connect wires to terminals as

needed. Use copper wire only #14 AWG maximum. Plug option board into the slot on the end of the motherboard. Reconnect power to operator. The green light(s) on the option board will turn on if the board is seated properly and the power is on.

Green Lights

Auxiliary Contacts

Option Board

Terminals

Insert PCB

Board into end

slot ONLY

CDO

Motherboard

When the CDO is powered up, the following contacts

CAUTION

outputs are available:

CONDUIT, WIRING, AND CONNECTORS

While opening: open 2 - 1 opened

(Open Aux. Contact)

SHOULD BE SIZED AND INSTALLED PER THE NATIONAL ELECTRICAL CODE.

open 2 - 3 closed

Route wiring as shown below.

While Closing: close 2 - 1 closed

(Closed Aux. Contact) close 2 - 3 opened

Limit

Assembly

CDO powered down: open 2 - 1 opened

open 2 - 3 closed close 2 - 1 closed close 2 - 3 opened

CDO powered on open 2 - 1 closed & door not in motion: open 2 - 3 opened

CONTROL

WIRING

POWER WIRING

close 2 - 1 opened close 2 - 3 closed