Chamberlain GA400D User Manual
Occasionally in dual gate installations, one gate would need to open first and close second. This would happen if there
was an ornamental overhang on one gate or if using a solenoid lock, for example. This gate is called the Primary gate
and needs to be connected to Gate 1 connections on the control board. Thus, it is preferred that the control box be
installed on the same side as this gate. If there is no appropriate location on that side for the control box, then mount the
control box on the opposite side, but connect the operator closest to the control box to the Gate 2 connector and the
operator on the opposite side to the Gate 1 connector.
was an ornamental overhang on one gate or if using a solenoid lock, for example. This gate is called the Primary gate
and needs to be connected to Gate 1 connections on the control board. Thus, it is preferred that the control box be
installed on the same side as this gate. If there is no appropriate location on that side for the control box, then mount the
control box on the opposite side, but connect the operator closest to the control box to the Gate 2 connector and the
operator on the opposite side to the Gate 1 connector.
Set the Lock/Bipart Delay
The LOCK/BIPART DELAY switch on the control board
needs to be set to the ON position.
needs to be set to the ON position.
The following illustration shows a dual gate configuration
with a decorative overlapping piece on the outside of the
gate.
with a decorative overlapping piece on the outside of the
gate.
Control Box
18
18
R93
R93
D42
D42
K2K2
D1
D1Ø
Z22Z22
P1P1
F2F2
MO
V1
M
O
V
1
D1D1
Q12Q
12
U4
U4
D129
D129
Z4
Z4
U3U3
D2
D2
D44
D44
C11C11
C13
C13
D16D16
F9F9
R1
R1Ø1
R1
R1ØØ
ØØ
K1K1
Q22
Q22
F3
F3
K3K3
K4K4
R196
R196
F1
F1
Z12
Z12
GATE 2
GATE 2
GR
GR
WH
WH
YL
YL
BL
BL
RD
RD
BR
BR
F7
F7
24V
24V
GATE 2
GATE 2
SET
SET
OPEN
OPEN
LIMIT
LIMIT
LIMIT
SET
SET
CLOSE
CLOSE
LIMIT
LIMIT
LEARN
LEARN
LIMITS
LIMITS
LIMITS
GATE 1
GATE 1
C69C69
J2J2
Ø
Ø
D8D8
D4D4
R9R9
R329R32
9
R27R27
MO
V2
MO
V2
R4R4
C2C
2
Z1
Z1
R2
R2
K5K5
F12
F12
Q9Q
9
R9
R9Ø
F8
F8
Q6Q6
Q1Q
1
C75
C75
C73
C73
C72
C72
C71
C71
C7
C7Ø
C66
C66
C65
C65
C68C68
C33C33
F11F11
R42
R42Ø
R423
R423
R423
J24 J23 3J24
J2
3
3
3
Ø
Ø
A 32VA
32V
32V
3 3
Ø
A 32VA
32V
J21J21
3030
3030
C64C64
R22
R22
U2
U2
J18J18
K6
K6
JU1JU1
JU2
JU2
DB1
DB1
D36
D36
C71
C7Ø
ON
OFF
LOCK/
BIPART DELAY
BIPART DELAY
18
R93
D42
K2
D1Ø
Z22
P1
F2
M
O
V
1
D1
Q12
U4
D129
Z4
U
3
D2
D44
C11
C13
D16
F9
R1Ø1
R1ØØ
K1
Q22
F3
K3
K4
R196
F1
Z12
GATE 2
GR
WH
YL
BL
RD
BR
F7
24V
GATE 2
SET
OPEN
LIMIT
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
LIMITS
GATE 1
C69
J2
Ø
Ø
D8
D4
R9
R329
R27
MO
V2
R4
C2
Z1
R2
K5
F12
Q9
R9Ø
F8
Q6
Q1
C75
C73
C72
C71
C7Ø
C66
C65
C68
C33
F11
R42Ø
R423
R423
J2
4
4
J2
3
3
Ø
Ø
A
32V
3
Ø
A
32V
J2
1
1
30
30
C64
R22
U2
J1
8
8
K6
JU1
JU2
DB1
D36
18
R93
D42
K2
D1Ø
Z22
P1
F2
M
O
V
1
D1
Q12
U4
D129
Z4
U
3
D2
D44
C11
C13
D16
F9
R1Ø1
R1ØØ
K1
Q22
F3
K3
K4
R196
F1
Z12
GATE 2
GR
WH
YL
BL
RD
BR
F7
24V
GATE 2
SET
OPEN
LIMIT
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
LIMITS
GATE 1
C69
J2
Ø
Ø
D8
D4
R9
R329
R27
MO
V2
R4
C2
Z1
R2
K5
F12
Q9
R9Ø
F8
Q6
Q1
C75
C73
C72
C71
C7Ø
C66
C65
C68
C33
F11
R42Ø
R423
R423
J2
4
4
J2
3
3
Ø
Ø
A
32V
3
Ø
A
32V
J2
1
1
30
30
C64
R22
U2
J1
8
8
K6
JU1
JU2
DB1
D36
Primary Gate - Connect to Gate 1 Connector on Control
Board.
Board.
Primary Gate
If a solenoid lock is being used on a gate, the gate with
the lock attached to it would be the primary gate.
the lock attached to it would be the primary gate.
Connect Gate Operator (Gate 2) to Control Box (Model GA420D Only)
25
Wiring
Outside Property
Outside Property