Chamberlain LM21XP - Manual (Page 6)

6
W I R I N G
WIRING DIAGRAM
1 2 3 4
Solenoid
(YE)
(GY)
R6
P2
U4
C2
U2
U3
C4
C1
Field Wiring shall consist of 22-18 AWG wiring.
1. Supervised, power limited circuit, 20 Ohm maximum line impedance.
2. Unsupervised, power limited circuit, 20 Ohm maximum line impedance.
3. Maximum of 4 Class B Style A detectors.
4. Power from an approved UL1481 regulated supply with battery backup.
LED 3 LED 1
DISABLE
POWER ON
SW3 SW2
P1
LED4
LED5
LED6
LED2
LED7
D1
SW1
K1
K3
K2
1
2
3
4
5
6
7
8
9
10
11
16
15
14
13
12
Common Relay
Connections
Alarm NC
Alarm Com
Alarm NO
Trouble NC
Trouble Com
Trouble NO
Input Power
(4)
+ 24Vdc
Normally Closed
Initiation Loop (1) (3)
Keep jumper between
3 & 4 if unused.
External power required.
N.O. Close
Door Proximity
Switch (2)
NC COM
014G0962B
GND_FAULT
CL_LIMIT
2W_FAULT
NC_FAULT
2W_OP
PTC1
Resistor
10k Ohm EOL
2-Wire Detector
Initiation Loop (1) (3)
Keep 10k Ohm resister
between 5 & 6 if unused.
+ In + Out - In/O
ut
+ In + Out - In/O
ut
+