Chamberlain LiftMaster Professional BG770 Quick start guide

GATE OPERATOR WIRING DIAGRAM
DRAWING NUMBER:
DATE: 08/28/00 REVISION: - 10/26/00 ECN:
NOTES:
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE
24V SECONDARY.
2) RELAY COIL VOLTAGE SAME AS OPERATOR LINE VOLTAGE.
3) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR.
APPLICATIONS: CONTROL WIRING TYPE - S3
FIELD WIRING & ADJUSTMENTS
MODEL TYPES:
HORSEPOWER: 1/3
VOLTAGE/PHASE: 115V & 230V, 50/60 Hz - 1 PHASE ONLY
.
,
01-G1014
B
BG770 (PG), BG790 (HBG)
(GN)

WARNING: All controls that are to be used to operate the gate system, MUST be installed where the user cannot touch the gate while
operating the controls. Also, always install the controls where the user has full view of gate operation.
All inputs are normally open and momentary, except the stop (NC), and emergency close & emergency open (constant pressure). The following instructions are
based upon UL 325, dated March of 1999 and include recommendations for significant increase in safety. We strongly recommend that you follow the UL
guidelines presented throughout the manual. Installation device instructions - always follow the instructions provided by the manufacturer when installing and
adjusting any control device. If these instructions are contrary to the advise given here, call for assistance.
Numbers shown inside a box are on the J1 terminal strip on the circuit board.
Connections shown here are field connections. The radio receiver may be ordered factory installed.
9
RECEIVER
CONTROL PANEL
TERMINAL STRIP
External Entrapment open
Will reverse (close) the gate if active. If struck
again during a reversal the gate will stop.
RADIO
1 2 3
ON SIDE OF
R1
R3
R2
OPEN
5
GATE LOCK
MASTER/SLAVE
POWER
SUPERVISED OPEN BUTTON
Caution - Only wired devices in sight of the gate
may be used with this input.
For wireless device see fig 2.
57
(WIRELESS) OPEN BUTTON
UNSUPERVISED
Any device can be used here and the radio (R2)
is wired here internally by the factory. Note, on
a second obstruction, this input will not function
(disabled). See page 8 for details.
56
Secondary safety
It is recommended that secondary
safeties always be used for both
the open and close directions.
Use photo eyes, safety edges or both. In any case, the
device must sense people. Loops cannot be used.
External Entrapment close
Will reverse (open) the gate if active.If struck
again during a reversal the gate will stop.
May defeat the timer to close.
CLOSE
510
Close/single button
This input allows for either a close operation, or
single button. In the single button mode, the
feature opens the operator except when on the
open limit where it will act as a close.
4
5
These are constant pressure inputs that
bypasses the processor and may be used in an
emergency even if the processor fails.
Interrupt loop
This input is for vehicles only and does not
provide UL secondary safety for persons. This
functions as an wireless open unless on the
close limit where it is defeated - thus preventing
vehicles from entering.
58
STOP BUTTON
- REQUIRED -
This is a normally closed input and the operator
will not run unless this is installed!
2
335
E- OPEN
E- CLOSE
1
11
11 12
12
Use shielded twisted pair.
do not run with power wiring.
USE POWER TO MATCH GATE LOCK
REQUIREMENTS, NOT TO EXCEED 115V 10A.
FOR WARNING DEVICES, CALL THE FACTORY
13 14
24 VAC

GATE OPERATOR WIRING DIAGRAM
DRAWING NUMBER:
DATE: 08/28/00 REVISION: - 7/16/02 ECN:
NOTES:
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE
24V SECONDARY.
2) RELAY COIL VOLTAGE SAME AS OPERATOR LINE VOLTAGE.
3) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR.
APPLICATIONS: CONTROL WIRING TYPE
FIELD WIRING & ADJUSTMENTS
MODEL TYPES:
HORSEPOWER: 1/2
VOLTAGE/PHASE: 115V & 230V, 50/60 Hz - 1 PHASE ONLY
.
,
01-G1014
C
BG770 (PG), BG790 (HBG)
(GN)
02-0365

IT IS IMPORTANT TO READ ALL SAFETY RULES INCLUDED IN THE INSTALLATION MANUAL BEFORE
BEGINNING INSTALLATION. FAILURE TO COMPLY WITH THE SAFETY INSTRUCTIONS MAY RESULT
IN SERIOUS PERSONAL INJURY OR PROPERTY DAMAGE.
NOTES:
1) REMOVE THIS JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY WHENEVER IT IS OPENED, UNLESS A VEHICLE IS ON THE
HOLD OPEN LOOP. IF THIS JUMPER IS NOT REMOVED, ARM WILL REMAIN OPEN UNTIL A VEHICLE ENTERS AND EXITS THE HOLD
OPEN LOOP.
2) ADD JUMPER FROM TERMINAL #8 TO #9 WHENEVER CLOSE BUTTON IS USED. DO NOT USE WITH HOLD OPEN LOOP.
3) 115V UTILITY OUTLET (4 AMP MAX.) PROVIDED ON 115V MODELS ONLY.
4) SEE REVERSE SIDE FOR INTERNAL OPERATOR WIRING. DRAWING NO.: 01-G1014
FIELD WIRING
CONTROL WIRING
LOOP DETECTORS BY OTHERS
LINE VOLTAGE SUPPLY
RADIO CONTROL
MANUAL
OPEN
SEE
NOTE #1
SEE NOTE #2
SENSING EDGE
OPEN BUTTON
OR OTHER
OPEN CONTROL
LINE VOLTAGE
POWER
TAKE-OFF
(SWITCHED)
FOR ACCESSORIES
CLOSE BUTTON
SEE NOTE #2
OPEN
LOOP
HOLD OPEN
LOOP
GEARBOX
HEATER
(OPTIONAL)
1 PHASE
INCOMING
LINE
LOOP WIRE CONNECTIONS FOR
FACTORY SUPPLIED (PLUG-IN)
DETECTORS ONLY
ELECTRICAL CABINET
ON
OFF
SWITCH
115V
OUTLET
SEE
NOTE #3
CONNECTIONS FOR LOOP DETECTORS
NOT SUPPLIED BY THE FACTORY
PRESENCE CONTACT OF
LOOP TO OPEN
PRESENCE CONTACT OF
LOOP TO HOLD OPEN
LOOP WIRES AND POWER FOR LOOP DETECTORS
SHOULD BE DIRECTLY WIRED TO DETECTOR ITSELF.
REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR.
CONNECTIONS FOR STANDARD
3-WIRE 24 VAC RADIO CONTROL
RADIO CONTROL WILL OPEN GATE
AND REVERSE IF CLOSING. IT WILL
NOT STOP OR CLOSE THE GATE.