Wiring The Power Terminal Block; 24 Vdc Power And Earth Ground - Fire-Lite LDM-32F Instruction Manual

Wiring the Power Terminal Block

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 (
• Connect 24 VDC power to the
terminals of TB1.
Wiring of multiple LDM-32F modules.
Host FACP or Remote
Power Supply
– 2 4 V D C
+ 2 4 V D C
LDM-32F PN 50055:C 03/20/01
).
EARTH
24 VDC
Power
Grounding Cable
Figure 7 24 VDC Power Terminals - TB1
First LDM-32F -- -- -- -- -- -- -- Last LDM-32F
Figure 8 Multiple Module Wiring - 24 VDC
(+) and
POWER IN
N.C. Supervision
Inputs
Common In (–)
Common Out (–)
Power In (+24 VDC)
Power Out (+24 VDC)
Earth
T B 1
TB 1
2. Installation
(–)
COMMON IN
TB 1
19