Accessory and relay connections, Battery installation, Wiring – Chamberlain MADCBB User Manual
Page 10: Relay output k1 - (optional)
10
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.
WIRING »
ACCESSORY AND RELAY CONNECTIONS + BATTERY INSTALLATION
24VAC XFM
ACC+
PWR
C
NC NO
Aux Relay
DC
1
1
K1
D11
D12
R13
D14
U19
J4
F3
J1
ACC–
BAT–
BAT–
MOV
BAT+
+
–
+
–
Black Lead
Jumper
12 VDC Battery
12 VDC Battery
Red Lead
BATTERY INSTALLATION
CONNECTING THE BATTERY LEADS - ALWAYS CONNECT AC POWER BEFORE
INSTALLING BATTERIES.
Connect AC power BEFORE installing batteries.
Install two new, fully charged 12 volt DC batteries on shelf next to motor.
Connect red lead from the operator control board to the positive (RED +)
terminal of one battery.
Connect the black lead from the operator control board to the (BLACK -)
terminal of the OTHER battery.
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.
Relay Connection Terminals on the J4 Terminal Block
24 Vdc (+)
0 Vdc (-)
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.)
AUX LIMITS
1
J2
1
R1
S1
D8
1
2
S2
1
2
D1Ø
RELAY OUTPUT K1 - (OPTIONAL)
S1-6
S1-8
S1 DIP Switch Block
1
2
3
4
5
The K1 Relay (optional) and terminal strip (J1) are used for auxiliary devices such as
Counters, Alarms,Buzzers, and SAMS (Sequence Access Management System).