NFS2-3030/E Installation Manual — P/N 52544:N1 07/18/2014
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Connecting the Loop Control and Expander Modules
Installation
After all loop-control and loop-expander modules are mounted in the cabinet, connect the SLC
loops to TB1 on each loop-control and loop-expander module as shown in Figure 3.16. Daisy-chain
the loop-control modules as shown in Figure 3.15. The ribbon-cable connection runs from header
J7 on the CPU to header J1 (“Data in”) on the first loop-control module, from J3 (“Data out”) on
that unit to J1 on the next unit in the chain, and likewise for up to five loop-control modules. Each
module should be assigned a unique SLC loop number (see below); loop number does not need to
match the module’s location in this daisy-chain.
FlashScan devices can operate in either FlashScan or, for retrofit applications, CLIP mode. Each
LCM-320 or LEM-320 running a FlashScan SLC can support up to 159 detectors and 159 modules.
CLIP loops are limited to 99 detectors and 99 modules. These and other capacity restrictions for
CLIP mode loops are discussed in Section 3.15 “Wiring a Signaling Line Circuit (SLC)”. Refer to
the SLC Wiring Manual for wiring requirements and specific details.
3.8.2 Audio Applications with Chassis CA-2
The first pair of loop control and expander modules should be mounted behind the DVC as shown
in Figure 3.10, or in the row immediately below the CA-2. Any additional loop control and
expander modules should be mounted in the row immediately below the CA-2.
3.8.3 Setting SLC Loop Number
Assign a unique SLC loop number to the loop control module by setting SW1 on the module to 1,
3, 5, 7, or 9. The loop expander module which is mounted behind this loop control module will be
assigned the next-higher even number. For example, if the LCM-320 is set to loop number 5, the
LEM-320 mounted to it will be set to loop number 6.
3.8.4 Enabling External Power Supervision
With LCM-320 revision 2.0 and higher, some type codes have external power supervision built into
the software; see Section 4.2 “Devices Requiring External Power Supervision” for details.
!
CAUTION:
DO NOT PROGRAM MORE THAN 99 ADDRESSES ON A CLIP-MODE SLC LOOP, BECAUSE
THIS WILL SLOW THE SYSTEM DOWN AND COMPROMISE THE RESPONSE TIME OF THE
PANEL TO DISPLAY OFF-NORMAL EVENTS.
C
A
2
3030L
C
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Figure 3.10 Mounting First Pair of Loop
Control and Expander Modules in CA-2
