Edwards Signaling E-ISO User Manual

Insert

screwdriver

here

Screw

4-24

screws

Module

Wall plate

Compatible

electrical box

E-ISO Analog SLC Fault Isolator Module
Installation Sheet

Operation

The module is an analog addressable device used to protect a
Class A SLC from total collapse due to wire-to-wire short
circuits. The module monitors line voltages and opens the SLC
when a short is detected. A short is isolated between the two
modules located electrically closest to the short.

The device address is set using the two rotary switches located
on the front of the module. One device address is required.

LED operation

The module provides a bicolor LED that shows its status.
Normal: Green LED flashes
Active: Red LED flashes

Installation

WARNINGS

• This module will not operate without electrical power. As
fires frequently cause power interruption, you should
discuss further safeguards with your local fire protection
specialist.

• This module does not support conventional smoke
detectors.

5. Mount the wall plate on the module using #4-24 x 1/2 in.
(13 mm) self-tapping screw s.

Figure 1: Module address

Figure 2: Module installation

Note: The module is shipped from the factory as an assembled

unit; it contains no user-serviceable parts and should not be
disassembled.

To install the module:

1. Verify that all field wiring is free of opens, shorts, and
ground faults.

2. Make all wiring connections as shown in “Wiring.”

3. Set the module address as follows:
Use a screwdriver to adjust the two rotary switches on the

front of the module. Set the TENS rotary switch (0 through

12) for the 10s and 100s digit and the ONES rotary switch
for the 0 through 9 digit. For example: device address 21,
set TENS rotary switch to 2 and set the ONES rotary
switch to 1.

Refer to “Specification s” for availa ble addr e ss number s.

4. Mount the module on the electrical box using screws
provided with the electrical box.

© 2013 UTC Fire & Security. All rights reserved. 1 / 2 P/N 3101197 • REV 02 • REB 28JAN13

Wiring

From

previous

device

[3] [4]

[5]

To next

device

TB2

SLC OUT

SLC IN

(+)

(+)

( )

( )

( )

( )

Communication line voltage

Current

Ground fault impedance

Maximum
between isolators

Operating environment

Storage temperature range

Compatible electrical boxes
Wire size
Module address

Wire in accordance with NFPA 72 and CAN/ULC-S524. Be
sure to observe the polarity of the wires as shown in the
diagram.

Figure 3: Module wiring

Notes
1 For maximum wire resistance, refer to the appropriate manufacturer's documentation
2 Maximum 12 AWG (2.5 mm
[3] Refer to the control panel technical reference manual for wiring specifications
[4] This module should be used only with Class A wiring
[5] Maximum circuit resistance between isolators is 6 Ω
6 All wiring is power-limited and supervised

2

) wire

Specifications

Standby
Activated

circuit resistance

Temperature
Humidity

Maximum 20.6 V peak-to-peak

175 μA
200 μA

10 kΩ

6 Ω

32 to 120° F (0 to 49° C)
0 to 93% RH, noncondensing at
90° F (32° C)

–4 to 140° F (–20 to 60° C)

North American 4 inch square x
2-1/2 in. (64 mm) deep 2 gang box
Standard 4 in. square box 1-1/2 in.
(38 mm) deep

12, 14, 16, or 18 AWG wire (2.5, 1.5,

1.0, or 0.75 mm
AWG are preferred)

01 to 64 (64 point control panel)
01 to 127 (127 point control panel)

2

) (Sizes 16 and 18

2 / 2 P/N 3101197 • REV 02 • REB 28JAN13