Wiring Diagram - Chamberlain LiftMaster LM21XPBB Manual

WIRING DIAGRAM

Auxiliary Common
Relay Connections
Trouble Com
10 kOhm
EOL Resistor
(LMEOLRES10)
Annunciator
Loop (4)
Place 10 kOhm
resistor
between 9 & 10
if unused
Replace batteries every 2 years. Field wiring shall consist of 22-18 AWG wiring.
Use only 250Vac, 3 Amp, 3 AG, Slo-Blo fuses.
1. Supervised, power limited circuit, 20 Ohm maximum line impedance.
Solenoid
2. Unsupervised power limited circuit, 20 Ohm maximum line impedance.
3. Maximum of 4 Class B Style A detectors.
4. Maximum of 2 Class B Style W notification appliances. 0.5 Amp at 24 Vdc maximum.
Supervised non-power limited circuit.
PU
GY YE
YE
WH
BK
Trouble NO
Trouble NC
Alarm NO
Alarm Com
Alarm NC
N. O.
Closed Door
Proximity
Switch (2)
(optional)
W I R I N G
12 V, 4.5 AHr
BK
Battery
2 Amp
maximum
current
RD
Input Power
OR
+ 24V ac/dc
– 0.75 Amp
Normally Closed
Initiation Loop (1) (3)
NC
Place wire jumper
COM
between 5 & 6 if unused.
External power required.
7
Speaker- Voice
board model only
+ Speaker
- Speaker
GR
120 Vac
.5 Amp
Hot
Neutral
Ground
EOL 10 kOhm
Resistor
(LMEOLRES10)
2-Wire Detector
Initiation Loop (1) (3)
Place 10 kOhm resistor
between 3 & 4 if unused