Fire-Lite LDM-32F Lamp Drivers - Manual (Page 14)

1. Introduction Features
14
LDM-32F PN 50055:C 03/20/01
Terminal Blocks
TB1 - 24 VDC Power, Earth Ground and Supervision
Removable terminal block TB1 appears only on the LDM-32F. 24 volts power-
limited, regulated, non-resettable power from the host FACP or a compatible
UL listed battery backed power supply must be connected to TB1-
POWER IN
(+) and TB1- COMMON IN (-). Terminals TB1- POWER OUT (+) and TB1-
COMMON OUT (-) may be used to daisy chain the 24 volts to other LDMs or
devices. Earth ground must be connected to TB1-
EARTH
. Terminals TB1-6
and TB1-
N
.
C
.
SUPERVISION INPUT
provide a supervised input which may be
used to supervise local power sources or other devices. A trouble signal is
transmitted to the host FACP upon an open circuit across these terminals. The
input must be power-limited. If these terminals are not used, a jumper must
be installed.
TB2- EIA-485 In/Out
Removable terminal block TB2 appears only on the LDM-32F. All LDM-32Fs
must connect to the EIA-485 communications bus circuit for proper operation.
The EIA-485 bus carries commands and data sent between the host FACP and
the LDMs. The input must be power-limited.
Cables
Expander Ribbon Cable
The Expander Ribbon Cable (PN 75120) is supplied with the LDM-E32F to
allow for connection to the LDM-32F master module. The cable connects
between J2 of the LDM-32F or LDM-E32F and J3 of the next LDM-E32F.
The LDM-CBL24 and LDM-CBL48
Cable sets for connecting LDM-32F and LDM-E32F connectors to lamps/
LEDs, switches, etc., are provided through the optional LDM-CBL24 (24"
long) and LDM-CBL48 (48" long) cabling kits. Each cable has a plug on one
end for connection to the LDM modules.
Each LDM-CBL24 cable kit includes:
• (4) P/N 75116, 24" cable consisting of 8 stranded, multicolored
conductors. Cables connect to J5, J6, J7 and J8.
• (1) P/N 75122, 24" cable consisting of 10 stranded, multicolored
conductors. Connects to J1, optional control switches.
• (1) P/N 75117, 24" cable consisting of 2 stranded, single color
conductors. Connects to J1, Lamp Test Switch.
• (1) P/N 75118, 24" cable consisting of 3 stranded, multicolored
conductors. Connects to J9 or J11, Lamp Power.