Determine The Wiring Type - Chamberlain MGJ User Manual

Congratulations on purchasing a quality, LiftMaster Medium Duty
Commercial Door Operator. Your new operator is capable of
operating up to 12 cycles per hour or 50 cycles per day. It is
equipped with a built in radio receiver that is compatible with our

DETERMINE THE WIRING TYPE

The functionality of this operator is based on the wiring type. The
operator is shipped from the factory in standard C2 wiring type
(factory default). Some wiring types will require an optional safety
device. Refer to the following descriptions of wiring types,
requirements and programming.
NOTE: 1. The LED on the logic board will blink once when in C2
and twice when in B2.
2. The operator will automatically convert to B2 wiring (option
D) when Monitored Safety Device is installed. If the
Monitored Safety Device is removed, the operator will go
into a Restricted Close mode**. Turn power OFF and ON to
reset wiring type.
** Restricted close mode requires a constant pressure close
command. The operator will begin closing after a 5 second delay
and will continue to close to the close limit switch. The operator
will stop if the pressure to close is released before reaching the
close limit.
C2 WIRING TYPE WITHOUT MONITORED SAFETY DEVICE
A
(Factory Default)
• Momentary contact to open and stop with constant
pressure to close.
• Open override that reverses when closing by any opening
device.
• Wiring for safety device to reverse. NOTE: The operator
will automatically convert to B2 wiring (option D) when
Monitored Safety Device is installed. (See accessories
page for Monitored Safety Devices)
• Timer to Close (TTC) feature not available.
NON-MONITORED SAFETY DEVICE
RESET TO C2 WIRING TYPE (Factory Default)
Remove any monitored safety devices.
Disconnect then reconnect power to the operator.
Press and hold the LEARN and STOP buttons until the LED goes
out (approximately 3 seconds).
Electrical Box Logic Board
D7
D5
U4 D6 D4
J4
014A1030
C32
C20
TP1 R25
C9
U1
C21
L5
AUX ANT ^^^^
AUX ANT
C18
J2 R27
D14
K2
TTC LEARN STOP CLOSE OPEN LT
LED C29
1 2 3 4 5 6 7 R24
P1
D9 LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
I N T R O D U C T I O N
B A S I C P R O G R A M M I N G
Sensing
Edge
LEARN STOP CLOSE OPEN
D14
LED
1 2 3 4 5 6 7
existing 315 MHz product line as well as a Timer To Close (TTC)
feature that can be enabled when LiftMaster Commercial Protector
®
System is installed and aligned properly.
WARNING
CAUTION CAUTION
To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:
• The radio is used.
• The 3-button control station is out of sight of the door.
• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.
AVERTISSEMENT
ATTENTION
C2 WIRING TYPE WITH MONITORED SAFETY DEVICE
B
• Momentary contact to open and stop with constant
pressure to close.
• Open override that reverses when closing by any opening
device.
• Wiring for safety device to reverse. NOTE: The operator
will automatically convert to B2 wiring (option D) when
Monitored Safety Device is installed. (See accessories
page for Monitored Safety Devices)
• Timer to Close (TTC) feature not available.
MONITORED SAFETY DEVICE
ADVERTENCIA
PRECAUCIÓN
TO PROGRAM
Press and hold the LEARN and CLOSE buttons until the LED goes
out (approximately 3 seconds).
Electrical Box Logic Board
D7 D5
U4
D6 D4
J4
014A1030
C32
C20
TP1 R25
C9
C21 U1
L5
^^^^
AUX ANT AUX ANT
C18
J2 R27
D14
K2
LT
TTC LEARN STOP CLOSE OPEN
C29
LED
1 2 3 4 5 6 7 R24
P1
LMEP1 LMEP2 STOP CLOSE OPEN
D9 COM INTRLK
2
Photo Eye
LEARN STOP CLOSE OPEN
D14
LED
1 2 3 4 5 6 7