Mount the control box (xlm), Earth ground rod installation (required), Installation – LiftMaster LA400 Residential DC Linear Gate Operator User Manual
Page 21: Large metal control box (xlm)
INSTALLATION
» LARGE METAL CONTROL BOX (XLM)
MOUNT THE CONTROL BOX (XLM)
The control box MUST be mounted within 5 feet (1.5 m) of the gate operator.
Mount the control box as high as possible for best radio reception.
Open the control box. The control box door may be removed by opening the
door 90°. Lift the door from the hinges and set aside until the installation is
complete.
The control box can be mounted to a post with 'U' bolts. See chart below. The
knock out will accommodate a 3/8" diameter 'U' bolt.
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
90°
1
2
3
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
1
2
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
3
EARTH GROUND ROD INSTALLATION (REQUIRED)
It is important to install the ground rod when using a metal control box to prevent
serious injury to persons or damage to the operator.
Install earth ground rod within 3 feet (0.9 m) of the operator.
Connect ground rod with #12 copper wire to one of the two green ground
screws inside the control box.
NOTE: The additional standoffs are specifically designed to mount up to
3 Chamberlain loop detectors model LO7LP (not provided).
CLOSE
CLOSE
PHOT
PHOTO
FORCE
FORCE
TIMER
TIMER TO
TO
CLOSE
CLOSE
OFF
OFF
MAX
MAX
SHADOW
SHADOW
INTERRUP
INTERRUPT
CHG
CHGR
OVLD
OVLD
CTR
CTRL
LOOP
LOOP
INPUTS
INPUTS
GA
GATE
TE 2
ACCESSO
ACCESSORY
RY
POWER
POWER
ALARM
ALARM
GA
GATE
TE 1
MAGR
MAGR
SOL
SOL
GR
GR
WH
WH
YL
YL
BL
BL
RD
RD
BR
BR
GR
GR
WH
WH
YL
YL
BL
BL
RD
RD
BR
BR
12
12 V
GA
GATE
TE 2
SET
SET
OPEN
OPEN
LIMIT
LIMIT
SET
SET
CLOSE
CLOSE
LIMI
LIMIT
LEAR
LEARN
LIMITS
LIMITS
GA
GATE
TE 1
LEARN
LEARN
XMITTE
XMITTER
LOCK
LOCK /
ON
ON
OF
OFF
PW
PWR
OFF
OFF
MAX
MAX
SINGLE BUTT
SINGLE BUTTON
ON
BI
BIPA
PART
RT DELA
DELAY
LOCK
LOCK
GND
GND
CLOSE
CLOSE
EDGE
EDGE
OFF
OFF
ON
ON
AUTO
AUTO OPEN
OPEN
LOW BATT
LOW BATT
OPEN EDGE
OPEN EDGE/
PHOT
PHOTO
OPEN
OPEN
PHOT
PHOTO
AC PW
AC PWR
/SOLAR
/SOLAR
CONTRO
CONTROL
INPUTS
INPUTS
OPEN
OPEN
SINGLE BUTT
SINGLE BUTTON
ON
RESET
RESET
ST
STOP
OP
CTR
CTRL
L PW
PWR
CTRL
CTRL PW
PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
Ground Screw
Standoffs
1
2
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
CLOSE
PHOTO
FORCE
TIMER TO
CLOSE
OFF
MAX
SHADOW
INTERRUPT
CHGR
OVLD
CTRL
LOOP
INPUTS
GATE 2
ACCESSORY
POWER
ALARM
GATE 1
MAGR
SOL
GR
WH
YL
BL
RD
BR
GR
WH
YL
BL
RD
BR
12 V
GATE 2
SET
OPEN
LIMIT
SET
CLOSE
LIMIT
LEARN
LIMITS
GATE 1
LEARN
XMITTER
LOCK /
ON
OFF
PWR
OFF
MAX
SINGLE BUTTON
BIPART DELAY
LOCK
GND
CLOSE
EDGE
OFF
ON
AUTO OPEN
LOW BATT
OPEN EDGE/
PHOTO
OPEN
PHOTO
AC PWR
/SOLAR
CONTROL
INPUTS
OPEN
SINGLE BUTTON
RESET
STOP
CTRL PWR
CTRL PWR
20
Type and Size
'U' Bolt Opening
Standard 3" Round Pipe
3-1/2"
Standard 4" Square Post
4"
Standard 6" Square Post
6"
Select center mounting holes (top and bottom) knock out using a screwdriver
and hammer. Use knock outs located at the 4 corners of the control box for
wall or column mounting.