Fire-Lite ECC-FFT Firefighters Telephone - Manual (Page 19)

ECC-FFT Instruction Manual — P/N LS10031-000FL-E:B 9/4/2013 19
SLC Device Installation Installation
Wiring SLC Devices in Style 6 & 7 (Class A) Configuration
Figure 2.10 illustrates how to wire the SLC loop for Style 6 or Style 7 Class A installations.
.
2.7.4 Addressing MMF-301 SLC Devices
All MMF-301 devices are addressed using the two rotary dials that appear on the device board. Use
the ONES rotary dial to set the ones place in a one or two digit number, and use the TENS rotary
dial to set the tens place in a two digit number.
MMF-301 modules can be assigned any unique address from 1 to 24.
NOTE: Style 6 does not require the use of short circuit isolator devices.
MM ISO ISO ISO ISO ISO ISO
ISO ISO ISO ISO ISO ISO
MM MM
MM MM
MM
ISO
= SLC Device, Mini monitor module, MMF-301
= Isolator Device, I300
MM ISO
ISO
MM MM
MM MM
MM MM
MM
SLC
Circuit
SLC
Circuit
SLC IN
SLC OUT
+
-
+
-
SLC IN
SLC OUT
+
-
+
-
Note: A maximum of 20
isolator modules can be
attached to the ECC-FFT
Style 6 Wring
Style 7 Wring
Figure 2.10 Class A SLC Configuration
Wires must be in conduit and close-nippled if isolator modules are used.
Wires must be in conduit and close-nippled at the
control panel and on each side of all devices.
NOTE: T-taps are not allowed on Class A SLC loops.
! CAUTION: PROPER SYSTEM SUPERVISION
FOR PROPER SYSTEM SUPERVISION DO NOT USE LOOPED WIRE UNDER TERMINALS
MARKED SLC + AND – OF THE SLC DEVICE CONNECTORS. BREAK WIRE RUNS TO PROVIDE
SUPERVISION OF CONNECTIONS.