Accessory And Relay Connections; Battery Installation - Chamberlain MADCBB Owner's Manual

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ACCESSORY AND RELAY CONNECTIONS + BATTERY INSTALLATION

ACCESSORY AND RELAY CONNECTIONS

These terminals will provide battery backed power to 24 Vdc devices and are located
at the bottom of the control board at J4 terminals 1 and 2. Terminal 1 is 24 Vdc (+)
and number 2 is 0 Vdc (-). Peripheral CLASS 2 low voltage devices that require
24 Vdc power maybe connected here (500 ma. maximum).
EXAMPLE: Vehicle detector, radio receiver.
The K1 Relay (optional) and terminal strip (J1) are used for auxiliary devices such as
Counters, Alarms,Buzzers, and SAMS (Sequence Access Management System).
RELAY OUTPUT K1 - (OPTIONAL)
S1-6 S1-8 RESULT
OFF OFF Relay will fire (latch) when gate is not closed.
ON OFF Relay will fire when arm is pushed up off of limit
switch (use with slip clutch option) and fires relay
when a tail-gate is detected by the close loop -
ANTI TAIL-GATE ALARM.
OFF ON Relay will pulse relay when arm reaches full
open position.
ON ON Relay will only pulse when input is given to J5
1,2,3 inputs. (Refer to pages 14-15.)

BATTERY INSTALLATION

CONNECTING THE BATTERY LEADS - ALWAYS CONNECT AC POWER BEFORE
INSTALLING BATTERIES.
1
Connect AC power BEFORE installing batteries.
2
Install two new, fully charged 12 volt DC batteries on shelf next to motor.
3
Connect red lead from the operator control board to the positive (RED +)
terminal of one battery.
4
Connect the black lead from the operator control board to the (BLACK -)
terminal of the OTHER battery.
5
Connect the jumper (provided) between the remaining terminals of each
battery if one is not already in place.
IMPORTANT: Do not run operator without installing the batteries.
Replace batteries in pairs using LiftMaster MBAT or 29-NP712 batteries. Failure to
install batteries correctly will cause damage and will not be covered by warranty.
K1
D11
U19
Aux Relay
J1 C NC NO DC
1
PWR
S1 DIP Switch Block
1
J2
D8
S1
R1
12 VDC Battery
12 VDC Battery
10
D12 D14
R13
J4
BAT–
1
ACC+ ACC– BAT–
Relay Connection Terminals on the J4 Terminal Block
S1-6
S1-8
1
AUX LIMITS
D1Ø
S2
1 2 1 2
Black Lead
–
+
Jumper
–
Red Lead
+
F3
MOV
BAT+ 24VAC XFM