Installation, Wiring to gate operator, Operation – Chamberlain GCU User Manual
Page 2: Installation wiring to gate operator, Open/close gate, Gate terminals, Step 5 step 6
Replace GCU cover and mount
near gate operator control box.
Remove bottom panel of GCU.
Connect Terminal 10 on GCU
to Common on gate operator
(shown below).
Connect Terminal 9 to Cycle on
gate operator (shown below).
1
3
2
4
5
6
7
8
9 10 11
DC
AC
+
-
COM
N/C
EXIT
SAFETY
EDGE
COMMON
OPEN
GRN
BLK
RED
RECR
N/O
GATE OPERATOR
GCU
Installation
Wiring to Gate Operator
2
Operation
To open a gate enter any valid PIN Number on
GAPLM. For multiple GCU’s, enter the PIN Number
followed by the GCU Identity (1-4).
For a remote control transmitter, press the
corresponding button for 3 seconds (within 75' of
GAPLM).
On an Intercom, press the Remote button while
talking to a visitor. At other times, hold the intercom’s
Remote button for 10 seconds, to activate the Primary
GCU.
NOTE: If the gate operator is not set to automatically
close the gate, any of the above methods can be
repeated to close the gate.
Open/Close Gate
1
3
2
4
5
6
7
8
9
10
11
DC
+
-
N/O
COM
N/C
AC
Gate Terminals
Optional Power Inputs:
• Terminals 1 and 2: Optional 10-24 Vac power input.
• Terminals 1 and 3: Optional 9-24 Vdc power input.
Ensure that the gate’s DC power supply “Ground” is
wired to terminal 3.
Relay Outputs:
• Terminal 9: Relay Normally Open contact.
• Terminal 10: Relay Common.
• Terminal 11: Relay Normally Closed contact.
Relay connections typically wire to Open Gate input
on gate operator.
NOTE: Output switching capacity is low voltage (24V
max, ac or dc).
Unused Contacts:
• Terminals 4-8: Not used.
To prevent possible SERIOUS INJURY or DEATH from
electrocution, outputs are suitable ONLY for controlling low
voltage devices, 24V max, ac or dc.
Step 5
Step 6