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4905 TrueAlert Is 

Installation Instructions 

 
 

 2005, 2006, 2013 Tyco Fire Protection Products. All rights reserved. 

Specifications and other information shown were current as of publication and are subject to change without notice. 
TYCO, SIMPLEX, and the product names listed in this material are marks and/or registered marks. Unauthorized use is strictly prohibited.

.

 

 

 

574-769 

Rev. C

 

DO NOT INSTALL ANY SIMPLEX

®

 PRODUCT THAT APPEARS DAMAGED.

  Upon unpacking 

your Simplex product, inspect the contents of the carton for shipping damage. If damage is apparent, 
immediately file a claim with the carrier and notify an

 authorized 

Simplex

 Product Supplier

 
 

ELECTRICAL HAZARD

 

-

 Disconnect electrical field power when making any internal adjustments or 

repairs. All repairs should be performed by a representative or authorized agent of your local Simplex 
product supplier. 
 

 

STATIC HAZARD

 

-

 Static electricity can damage components. Handle as follows: 

 

Ground yourself before opening or installing components. 

 

Prior to installation, keep components wrapped in anti-static material at all times. 

 

FCC RULES AND REGULATIONS – PART 15 —

 

This equipment has been tested and found to comply 

with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to 
provide reasonable protection against harmful interference when the equipment is operated in a commercial 
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and 
used in accordance with the instruction manual, may cause harmful interference to radio communications. 
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user 
will be required to correct the interference at his own expense. 

 

The TrueAlert family of notification appliances provides addressable control and supervision of 
individual appliances and circuit wiring. Appliances are operated over a single two-wire notification 
appliance circuit (TrueAlert Channel) that allows T-tapping (Class B only).  The TrueAlert Isolator 
+ Module provides a means of containing the effects of a short circuit on the TrueAlert Channel to a 
single segment of wire, as well as an aid in locating stray connections to earth ground.  The 
TrueAlert Channel can be broken into segments called Virtual NACs (VNACs) in both Class B 
and Class A circuit topologies using the TrueAlert Is module to abut segments.  TrueAlert 
Is Modules operate contact switches through commands received over the 2-wire 
TrueAlert circuit from the 4009 TrueAlert Addressable Controller and TrueAlert Power Supply 
(TPS). TrueAlert Is modules automatically isolate the short to a single segment of wire, 
but require a command from the host panel to restore the connection. Manual control of opening 
and closing the contacts is also available through the TrueAlert Power Supply. 
 
The range of possible temperatures under which the TrueAlert Is can function is between 
0



C (32



F) and 49



C (120



F). 

 
The TrueAlert Is operates normally under non-condensing humidity conditions up to 93% 
with relative humidity at 38



C (100



F). 

 
The TrueAlert Is Module has a LED that the TrueAlert Addressable Controller can 
command to Flash ON, OFF, or blink when polled. See Figure 1, TrueAlert Is Module. 
 

Note:

  The TrueAlert Is Module is a faster version of the original TrueAlert Isolator. It is a 

100% backwards compatible replacement for the original version. You will not necessarily gain 
the enhanced speed benefit of the short isolation unless all your isolators are the new “+” type on 
the same TrueAlert Channel. The “+” version can be identified by looking at the silkscreen on the 
PCA for “TrueAlert Is” located near the terminal block. 
 

Cautions and 
Warnings 

Introduction 

 

Summary of Contents for TrueAlert Isolator+

Page 1: ... of notification appliances provides addressable control and supervision of individual appliances and circuit wiring Appliances are operated over a single two wire notification appliance circuit TrueAlert Channel that allows T tapping Class B only The TrueAlert Isolator Module provides a means of containing the effects of a short circuit on the TrueAlert Channel to a single segment of wire as well...

Page 2: ...wires under terminals Break wire runs to provide supervision of connections Do not bring conduit through the rear of the electrical box Strip lead insulation to 3 8 maximum 1 At the electrical box connect the contractor wire to the PORT 1 PORT 2 and terminal of the TrueAlert Isolator Module See figure 2 and 3 TrueAlert Isolator Class B and A Wiring 2 Ensure that correct polarity is maintained acro...

Page 3: ...f wire protected by one or more Isolator modules limit the wire resistance to a maximum value of 1 5 ohms for a given line path The wire resistance is measured from the Controller s port to the furthest appliance in the protected segment Deviation from this limitation does not guarantee isolation for short circuits that are located greater than 1 5 ohms Figure 2 TrueAlert Isolator Class B Wiring I...

Page 4: ...wiring connections are supervised and power limited 6 Powering the Isolator Module from an appliance power source less than 17 6 VDC or greater than 32 VDC may cause permanent damage to the module 7 The TrueAlert Isolator Module can be operated through the TrueAlert Addressable Controller the TrueAlert compatible FACP the 4009 IDNAC Repeater or the EPS IDNAC 8 The Isolator Module counts for 4 unit...

Page 5: ... The TrueAlert Isolator Module uses terminals to connect to each wire point Each accepts 2 wires of gauges 12 through 18 AWG The terminal screws at TB1 accommodate both slotted and Philips drive Refer to the Field Wiring Diagrams or applicable installation manuals for detailed information on maximum wire run distance FigureTag FD4 769 02 Grounded Metal Electrical Box Electrical box 4 square 102 mm...

Page 6: ...t Channel 4009 TrueAlert Addressable NAC Controller or TrueAlert compatible FACP only supports address codes 1 through 63 2 DIP switch in 1 position is ON while DIP switch in 0 position is OFF Table 1 TrueAlert Isolator Module DIP Switch Address Chart 0000 1000 0100 1100 0000 0 16 32 48 1000 1 17 33 49 0100 2 18 34 50 1100 3 19 35 51 0010 4 20 36 52 1010 5 21 37 53 0110 6 22 38 54 1110 7 23 39 55 ...

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