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4 addressing mmf-301 slc devices, Addressing mmf-301 slc devices – Fire-Lite ECC-FFT Firefighters Telephone User Manual

Page 19

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ECC-FFT Instruction Manual — P/N LS10031-000FL-E:B 9/4/2013

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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.