Optional Control Devices - Chamberlain LiftMaster Professional SL540 Manual

All inputs are normally open and momentary, except the stop (N.C.). The following instructions are based upon UL325, and include
recommendations for significant increase in safety.
We strongly recommend that you follow the UL guidelines presented throughout the manual. Refer to instructions shipped with
optional control devices for mounting, wiring, programming and adjustment.
24Vac Accessory Power
Can be found at terminals R1 and R2 located on
radio terminal block.
R1 R2
24 Vac
Terminals 1 and 5 - Residential Radio (single button) Input
These terminals are intended for use with a radio receiver in a
residential application or as a single button control. This allows
the user to open the gate by activating the transmitter when the
gate is closed or between limits. This input also gives the user
the ability to close the gate by activating the transmitter when the
gate is on the open limit.
Terminals 2 and 5 - Shadow Loop Input
These terminals are intended for use with a loop detector and are
primarily used on swing gate operators. This input protects cars
by preventing the gate from moving off of the open or close limit
when the shadow loop input is active.
Terminals 6 and 5 - Soft Open
These terminals are intended for use as a general open control.
Accessories that may be wired to this input include: Telephone
Entry Systems, Radio Receiver (Commercial Applications), Exit
Loop Detector, Keypads, 7-Day Timer.
Note: Will not override a double entrapment (signalled by the
gate stopped and entrapment alarm on).
Terminals 8 and 5 - Interrupt (Safety) Loop Input
These terminals are intended for use with a loop detector. This
input functions to reverse a closing gate to the open limit.
Latching this input will reset the timer to close.
O P T I O N A L C O N T R O L D E V I C E S
Terminal Block
1 2 3 4 5 6 7 8 9 10
R3 R4
ONE BUTTON WIRING
1 2 3 4 5 6
SHADOW LOOP INPUT
1 2 3 4 5 6
1 2
3
2
1
6
5
9
8
7
#
0
INTERRUPT (SAFETY) LOOP INPUT
1 2 3 4 5 6
18
Control Box
7 8 9 10
7 8 9 10
SOFT OPEN
3 4 5 6 7 8 9 10
7 8 9 10