LN1000 IS Annunciator
39
SECTION 11 SYSTEM SUPPLY CONNECTIONS
Power Supply
The power supply is connected to the Sequence Card from a certified IS Isolator mounted in
the safe area, the recommended isolator is the MTL5021.
This Isolator can supply up to 32 alarm channels and the necessary IS relays to switch on
external Sounders and Beacons.
Connection is as shown in Figure 11.1 below
IS power supply connection (Figure 11.1)
WARNING
Never connect the LN1000 directly to a 24VDC supply, this will result in damage to the
sequence card. Always use a suitable is isolator as shown in figure 11.1
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
S E Q U E N C E C A R D
H A Z A R D O U S A R E A
S A F E A R E A
+
-
+
-
M T L 5 0 2 1
1 1
1 2
1
2
L N 1 0 0 0 /S C
