Fire-Lite LDM-32F, Instruction Manual

Page: 19 / 64

Wiring the Power Terminal Block 2. Installation
LDM-32F PN 50055:C 03/20/01
19
Wiring the Power Terminal Block
24 VDC Power and Earth Ground
24 VDC power supplied to the LDM must be power-limited. This power is
inherently supervised (loss of power also results in a communication failure at
the control panel).
• Limit the total wire resistance to 10 ohms.
• Connect the Grounding Cable from the chassis to the earth ground
terminal of TB1 (
EARTH
).
• Connect 24 VDC power to the
POWER IN
(+) and
COMMON IN
(–)
terminals of TB1.
Figure 7 24 VDC Power Terminals - TB1
Wiring of multiple LDM-32F modules.
Figure 8 Multiple Module Wiring - 24 VDC
T B 1
N.C. Supervision
Inputs
Common In (–)
Common Out (–)
Power In (+24 VDC)
Power Out (+24 VDC)
Earth
24 VDC
Power
LD
M3
2F-
T
B
1
.cdr
Grounding Cable
– 2 4 V D C
+ 2 4 V D C
T B 1 T B 1
Host FACP or Remote
Power Supply
First LDM-32F -- -- -- -- -- -- -- Last LDM-32F
LD
M32
F
-p
ow
er.cd
r