Spectrex SharpEye 777915 Series User manual

End-of-Line Encapsulated Resistor
P/N 777915-X
Installation Guide
Document Ref: TM777915-X, Rev. (5), June 2017
8200 Market Blvd, Chanhassen, MN 55317, USA
Phone: [phone] Fax: [phone]
Website: www.spectrex.net Email: [email protected]

Legal Notice
The SPECTREX End-of-Line Encapsulated Resistor described in this document is the property of
Rosemount.
No part of the hardware, software or documentation may be reproduced, transmitted, transcribed,
stored in a retrieval system or translated into any language or computer language, in any form or by any
means, without prior written permission of Rosemount.
While great efforts have been made to assure the accuracy and clarity of this document, Rosemount
assumes no liability resulting from any omissions in this document, or from misuse of the information
obtained herein. The information in this document has been carefully checked and is believed to be
entirely reliable with all of the necessary information included. Rosemount reserves the right to make
changes to any products described herein to improve reliability, function, or design, and reserves the
right to revise this document and make changes from time to time in content hereof with no obligation
to notify any persons of revisions or changes. Rosemount does not assume any liability arising out of the
application or any use of any product or circuit described herein; neither does it convey license under its
patent rights or the rights of others.
Warning: This manual should be read carefully by all individuals
who have or will have responsibility for using, maintaining or
servicing the product.
The detector is not field-repairable due to the meticulous
alignment and calibration of the sensors and the respective
circuits. Do not attempt to modify or repair the internal circuits
or change their settings, as this will impair the system's
performance and void the SPECTREX product warranty.
Warranty
SPECTREX agrees to extend to Purchaser/Distributor a warranty on the SPECTREX supplied components
of the SharpEye products. SPECTREX warrants to Purchaser/Distributor that the products are free from
defects in materials and workmanship for a period of five (5) years, commencing with the date of
delivery to Purchaser/Distributor. SPECTREX expressly excludes damage incurred in transit from the
factory or other damage due to abuse, misuse, improper installation, or lack of maintenance or “Act of
God,” which are above and beyond its control. SPECTREX will, upon receipt of any defective product,
transportation prepaid, repair or replace it at its sole discretion, if found to have been defective when
shipped. Said repair or replacement is SPECTREX’S sole liability under this warranty and SPECTREX’S
liability shall be limited to repair or replacement of the component found defective and shall not include
any liability for consequential or other damages. The customer is responsible for all freight charges and
taxes due on shipments both ways. This warranty is exclusive of all other warranties express or implied.

iv
SharpEyeTM End-of-Line Encapsulated Resistor Installation Guide
Release History
Rev
Date
Revision
History
Prepared by
Approved
by
0
May 2014
First Release
Ian Buchanan
Eric Zinn
1
February 2015
Second Release
Ian Buchanan
Eric Zinn
2
March 2015
Third Release
Ian Buchanan
Eric Zinn
3
March 2015
Fourth Release
Ian Buchanan
Eric Zinn
4
March 2015
Fifth Release
Ian Buchanan
Eric Zinn
5
June 2017
Sixth Release
Jay Cooley
Shaul Serero

TM777925-X Rev (5), June 2017
5
Table of Contents
Legal Notice............................................................................................... iii
Warranty................................................................................................... iii
1General Description.............................................................................. 7
2End-of-Line Encapsulated Resistor Options .......................................... 7
3Product Certification ............................................................................ 7
4Certification Instructions ..................................................................... 8
5Resistor Installation............................................................................. 8
Technical Support..................................................................................... 12
Table of Figures
Figure 1: End-of-Line Resistor Installed in 40/40 Series ................................ 9
Figure 2: End-of-Line Resistor Label Installed in the Back Cover .................... 9

TM777925-X Rev (5), June 2017
7
1General Description
This End-of-Line Encapsulated Resistor P/N 777915-X is used with the
flame detector series, when detectors are connected as a 4-wire
connection to the alarm panel through the Fault and Alarm delays.
This resistor is used as end-of-line, when the detectors are in a loop
with several detectors. At normal operation, the controller will see the
end-of-line. At Fault, the fire alarm will see disconnection. At Alarm,
the Alarm panel will see short circuit.
The value of the resistor is defined by the controller type.
The resistor has several options.
2End-of-Line Encapsulated Resistor
Options
The End-of-Line Encapsulated Resistor has 10 different resistor values,
which give a wide variety of options for different fire alarm panels:
Options
Resistor Value
Max. Current
777915-1
1.56KΩ
21mA
777915-2
2.35KΩ
14mA
777915-3
4.7KΩ
7mA
777915-4
7.5KΩ
4.3mA
777915-5
10KΩ
3.2mA
777915-6
20KΩ
1.6mA
777915-7
47KΩ
0.7mA
777915-8
56KΩ
0.57mA
777915-9
68KΩ
0.47mA
777915-10
75KΩ
0.43mA
3Product Certification
The End-of-Line Encapsulated Resistor, P/N 777915-X, is certified
per ATEX and IECEx: Ex II 2 G D
Ex mb IIC Gb
Ex mb IIIC Db
Operation voltage: 18–32VDC
The maximum current permitted is defined in End-of-Line
Encapsulated Resistor Options on page 7.

8
SharpEyeTM End-of-Line Encapsulated Resistor Installation Guide
4Certification Instructions
The marking of this equipment is:
Ex II 2 G D
Ex mb IIC Gb
Ex mb IIIC Db
This equipment may be used with flammable gasses and vapors
with apparatus groups IIA and IIC:
T5 in the ambient temperature range: -67°F/-55°C to
+167°F/+75°C.
The prospective short circuit current (PSCC) of the power supply
which supplies equipment incorporating the components should be
no more than 1500A. The PSCC of the supply should be limited by a
fuse with a breaking capacity of at least 1500A, and a voltage
rating at least corresponding to the working voltage of the circuit in
which it is installed.
Where limitation in the previous section is satisfied by limitation of
the voltage across the resistor to 32V (Option A), the service
temperature range of the encapsulated resistor is -67°F/-55°C to
+260°F/+127°C. Under testing of the Ex component based on this
voltage rating, the service temperature rise is 40.7K and the
surface temperature rise is 39.5K.
Where limitation in the previous section is satisfied by limitation of
current drawn by the resistor, by the use of a fuse (Option B), the
service temperature range of the equipment is 67°F/-55°C to
266°F/+130°C. Under testing of the Ex component based on the
current rating, the temperature rises recorded on the component,
within the compound and on the compound surface, were 101K and
85.9K respectively.
The local ambient and surface temperature of the resistor should be
taken into account in determining the service temperature within
the compound in any equipment applications.
5Resistor Installation
The resistor should be installed at the factory only.
For the 40/40 Flame Detector Series, the resistor should be ordered
by definition 40/40X-XXXXE resistor value.
When ordering 40/40X-XXXXE, the marking of the detector will
change to:
Ex II 2 G D
Ex db eb mb op is IIC T4 Gb
Ex tb op is IIIC T98°C Db
(-55°C≤Ta≤+75°C)
The resistor will be connected between Terminals 5 and 6 (see
Figure 1), and a label will be glued to the detector’s back cover
(see Figure 2).

Resistor Installation
TM777915-X Rev (5), June 2017
9
Figure 1: End-of-Line Resistor Installed in 40/40 Series
Figure 2: End-of-Line Resistor Label Installed in the Back Cover

Technical Support
For technical assistance or support, contact:
8200 Market Blvd
Chanhassen, MN 55317
USA
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.spectrex.net
Your Local SPECTREX Office:
Texas (USA)
Mr. Jay Cooley, Regional Sales Manager
16203 Park Row, Suite 150
Houston, Texas 77084
USA
Phone: [phone]
Email: jay.cool[email protected]
Far East
Mr. Deryk Walker, Regional Sales Manager
59 Fen Ji Hu, Danshui
Taipei County 25163
Taiwan (ROC)
Phone: [phone]
Mobile: [phone]
Email: deryk.wal[email protected]