User Guide
WIU Current Sensor,
DECEMBER 2011 (REVISED MARCH 2019)
DOCUMENT NO. SIG-00-11-10
VERSION A.1
A80850
Siemens Mobility, Inc.
700 East Waterfront Drive
Munhall, Pennsylvania 15120
1-800-793-SAFE
www.usa.siemens.com/rail-manuals
Copyright © 2011-2019 Siemen s Mobility, Inc.
SIEMENS MOBILITY, INC.
SIEMENS MOBILITY, INC.
2400 NELSON MILLER PARKWAY
939 S. MAIN STREET
LOUISVILLE, KENTUCKY 40223
MARION, KENTUCKY 42064
TELEPHONE:
(502) 618-8800
TELEPHONE:
(270) 918-7800
FAX:
(502) 618-8810
CUSTOMER
SERVICE:
(800) 626-2710
SALES & SERVICE:
(800) 626-2710
TECHNICAL
SUPPORT:
(800) 793-7233
WEB SITE:
USA Rail Automation Site
FAX:
(270) 918-7830
PROPRIETARY INFORMATION
Siemens Mobility, Inc. has a proprietary interest in the information contained herein
and, in some instances, has patent rights in the systems and components described. It
is requested that you distribute this information only to those responsible people within
your organization who hav e a n of fici al i nte rest.
This document, or the information disclosed herein, shall not be reproduced or
transferred to other documents or used or disclosed for m anufacturing or for any other
purpose except as specifically authorized in writing by Siemens Mobility, Inc..
TRANSLATIONS
The manuals and product information of Siemens Mobility, Inc. are intended to be
produced and read in English. Any translation of the manuals and product information
are unofficial and can be imprecise and inaccurate in whole or in part. Siemens
Mobility, Inc. does not warrant the accuracy, reliability, or timeliness of any
information contained in any translation of manual or product information from its
original official released version in English and shall not be liable for any losses caused
by such reliance on the accuracy, reliability, or timeliness of such information. Any
person or entity who relies on translated information does so at his or her own risk.
WARRANTY INFORMATION
Siemens Mobility, Inc. warranty policy is as stated in the current Terms and Condi tio ns
of Sale document. Warranty adjustments wi ll n ot be a llowed f or pr oduc ts or comp onent s
which have been subjected to abuse, alteration, improper handling or installation, or
which have not been operated in accordance with Seller's instructions. Alteration or
removal of any serial numb er o r ide nti fica tio n mark v oi ds the warranty .
SALES AND SERVICE LOCATIONS
Technical assistance and sales information on Siemens Mobility, Inc. products may be
obtained at the follo wing lo catio ns:
FCC RULES COMPLIANCE
The equipment covered in this manual 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 expense.
Document No.: SIG-00-11-10 Version: A.1
ii
Table Of Contents
Section Title Page
PROPRIETARY INFORMATION .......................................... ii
WARRANTY INFORMATION .............................................. ii
SALES AND SERVICE LOCATIONS .................................... ii
FCC RULES COMPLIANCE ................................................ ii
TABLE OF CONTENTS ..................................................... iii
LIST OF FIGURES ........................................................... iii
NOTES, CAUTIONS, AND WARNINGS .............................. iv
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ............ v
1 INTRODUCTION ............................................................................................................... 1-1
1.1 General ........................................................................................ 1-1
1.1.1 Current Sensor Board .................................................................... 1-1
1.1.2 Current Sensor Adapter Board ........................................................ 1-2
1.2 Ordering Information ..................................................................... 1-2
2 INSTALLATION ................................................................................................................. 2-1
2.1 Installation Overview ..................................................................... 2-1
2.1.1 Current Sensor Adapter Installation ................................................. 2-2
2.1.2 Current Sensor Wiring ................................................................... 2-3
2.1.2.1 Current Sensor Output Connection .................................................. 2-4
2.1.3 Surge Protection ........................................................................... 2-5
2.1.4 Current Sensor Module Expansion ................................................... 2-6
2.1.5 Threshold Settings ........................................................................ 2-7
2.1.6 Example Installations ..................................................................... 2-9
Table of Figures
Figure No. Title Page
Figure 1-1 Current Sensor Module ............................................................... 1-1
Figure 1-2 Current Sensor Adapter Board ..................................................... 1-2
Figure 2-1 Typical Three Lamp Signal Current Sensor Installation .................... 2-1
Figure 2-2 Installed Current Sensor Adapter ................................................. 2-2
Figure 2-3 Current Sensor Wiring without Terminal Board Adapter .................. 2-3
Figure 2-4 Current Sensor Wiring with Terminal Board Adapter ....................... 2-3
Figure 2-5 Shielded Current Sensor Output Connections ................................ 2-4
Figure 2-6 Typical Installation with Surge Suppression ................................... 2-5
Figure 2-7 Current Sensor Module Expansion ................................................ 2-6
Figure 2-8 Multiple Expansion Modules (10 maximum) ................................... 2-6
Figure 2-9 Threshold Settings ..................................................................... 2-8
Figure 2-10 Example Current Sensor Installation ........................................... 2-9
Figure 2-11 Example of Current Sensing for Individual Signal Lamps ............. 2-10
Figure 2-12 Example of Current/Voltage Sensing ........................................ 2-11
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Document No.: SIG-00-11-10 Version: A.1
NOTES, CAUTIONS, AND WARNINGS
Throughout this manual, notes, cautions, and warnings are frequently used to direct
the reader’s attention to specific information. Use of the three terms is defined as
follows:
NOTE
Generally used to highlight certain
information relating to the topic under
discussion.
CAUTION
REFERS TO PROPER PROCEDURES OR
PRACTICES WHICH IF NOT STRICTLY
OBSERVED, COULD RESULT IN A
POTENTIALLY HAZARDOUS SITUATION
AND/OR POSSIBLE DAMAGE TO EQUIPMENT.
CAUTIONS TAKE PRECEDENCE OVER NOTES
AND ALL OTHER INFORMATION, EXCEPT
WARNINGS.
WARNING
INDICATES A POTENTIALLY HAZARDOUS SITUATION
WHICH, IF NOT AVOIDED, COULD RESULT IN DEATH OR
SERIOUS INJURY. WARNINGS ALWAYS TAKE PRECEDENCE OVER NOTES, CAUTIONS, AND ALL OTHER
INFORMATION.
If there are any questions, contact Siemens Mobility, Inc. Application Engineering
Document No.: SIG-00-11-10 Version: A.1
iv
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
Static electricity can damage electronic circuitry, particularly low voltage
components such as the integrated circuits commonly used throughout the
electronics industry. Therefore, procedures have been adopted industry-wide which
make it possible to avoid the sometimes invisible damage caused by electrostatic
discharge (ESD) during the handling, shipping, and storage of electronic modules
and components. Siemens has instituted these practices at its manufacturing facility
and encourages its customers to adopt them as well to lessen the likelihood of
equipment damage in the field due to ESD. Some of the basic protective practices
include the following:
• Ground yourself before touching card cages, assemblies, modules, or
components.
• Remove power from card cages and assemblies before removing or installing
modules.
• R emo ve c ircuit boards (modules) fro m card cage s by the ejector lever only. If an
ejector lever is not provided, grasp the edge of the circuit board but avoid
touching circuit traces or components.
• Handle circuit boards by the edges only.
• Never physically touch circuit board or connector contact fingers or allow these
fingers to come in contact with an insulator (e.g., plastic, rubber, etc.).
• W hen not in use, place circuit boards in approved static-shielding bags, contact
fingers first. Remove circuit boards from static-shielding bags by grasping the
ejector lever or the edge of the board only. Each bag should include a caution
label on the outside indicating static-sensiti ve contents.
• Cover workbench surfaces used for repair of electronic equipment with static
dissipative workbench matting.
• Use integrated circuit extractor/inserter tools designed to remove and install
electrostatic-sensitive integrated circuit devices such as PROM’s (OK Industries,
Inc., Model EX-2 Extractor and Mode l MOS-40 Inserte r ( or e quivalent) are highly
recommended).
• Utilize only anti-static cushioning material in equipment shipping and storage
containers.
For information concerning ESD material applications, please contact the Siemens
Technical Support Staff at 1-800-793-7233. ESD Awareness Classes and additional
ESD product information are also available through the Technical Support Staff.
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This Page Intentionally Left Blank
Document No.: SIG-00-11-10 Version: A.1
vi
INTRODUCTION
SECTION 1
INTRODUCTION
1 INTRODUCTION
1.1 General
The WIU (Wayside Interface Unit) current sensor is a component of the VIU and
iVIU product lines. The WIU current sensor monitors signal lamp current to report if
the lamp is off, on, or flashing. In PTC applications the current sensor monitors the
energized state of the wayside signal lamps, and the signal aspect information is
transmitted by the WIU to the locomotive.
1.1.1 Current Sensor Board
The current sensor board is designed to monitor up to three lamps. The main board
contains all the circuit components needed to create the digital outputs that
represent the state of the lamps, including the sensors themselves. A Current
Sensor Adapter board may be used to interface the lamp circuit to the current
sensor board. Figure 1-1 displays the current sensor module.
Figure 1-1 Current Sensor Module
1-1
Document No.: SIG-00-11-10 Version: A.1
INTRODUCTION
Part Number
Description
8000-80850-0001
Current Sensor Module
62199
Current Sensor Adapter Board
1.1.2 Current Sensor Adapter Board
The current sensor adapter board enables e asy rerouting of the existing lamp wires
through the sensors. By disengaging a single wire from its terminal and installing
the small current sensor adapter board in its place, an extension loop (pre-wired
through the sensor) is added to that lamp wire. This is acco mplishe d in a re latively
simple, easy, and minimally disruptive manner. Figure 1-2 shows the current sensor
adapter board.
Figure 1-2 Current Sensor Adapter Board
1.2 Ordering Information
The following is the ordering information for the WIU Current Sensor:
Document No.: SIG-00-11-10 Version: A.1
1-2
INSTALLATION
Current Sensor Assembly
Existing Terminal
Terminal Board Connection
To Lamp
To
Lamp Wire
Lamp Wire
Lamp Wire
Sensor
SECTION 2
INSTALLATION
2 INSTALLATION
2.1 Installation Overview
The current sensor system consists of two components, the current sensor and an
optional current sensor adapter board. A typical three lamp signal installation is
shown in Figure 2-1.
Board
with Current Sensor Adapter
Figure 2-1 Typical Three Lamp Signal Current Sensor Installation
WARNING
VERIFY ALL COMPONENTS AND WIRING ARE PROPERLY
INSTALLED AND MEET THE RAILROAD'S OR AGENCY'S
APPROVED WIRING OR INSTALLATION DIAGRAM.
FAILURE TO DO SO MAY LEAD TO INCORRECT OR
UNSAFE OPERATION OF THE SIGNAL SYSTEM.
Connections
SIEMENS MOBILITY, INC. STRONGLY RECOMMENDS
INSTALLING PRIMARY SURGE PROTECTION ON EXTERNAL
LINES CONNECTING TO THE VIU.
The WIU Current Sensor is not intended to be used for
current sensing of Pulse Width Modulated (PWM) lamp
detection.
CAUTION
NOTE
2-1
Document No.: SIG-00-11-10 Version: A.1
INSTALLATION
2.1.1 Current Sensor Adapter Installation
The current sensor adapter is designed to retrofit existing signal control points and
make them PTC-ready with minimal effort. Figure 2-1 shows the comparison of an
existing terminal board and a modified terminal board with the current sensor
adapter installed. Figure 2-2 displays a current sensor adapter mounte d on a signal
terminal block. The optional current sensor adapter cab be installed on each lamp
terminal.
Figure 2-2 Installed Current S e nsor Adapter
Document No.: SIG-00-11-10 Version: A.1
2-2
J1
J2
J3
J4
J2
Cable Shield
+ - + - +
- + - + -
VITAL
VITAL TEST
POWER INPUT
WIU
+ - BATTERY
To
From
Terminal Board
J1
J2
J3
J4
J2
Cable Shield
+ - + - + - +
- + -
VITAL
VITAL TEST
POWER INPUT
WIU
+
BATTERY
To
Terminal Board
From
Current Sensor
Existing
Terminal
INSTALLATION
2.1.2 Current Sensor Wiring
The wiring installation of the current sensor is shown in Figure 2-3 below. Lamp
wiring is connected to the current sensor input connector J1. The input wires may
be existing lamp wires or wires from the optional adapter board. Battery and the
Vital Test Current Output are connected to J3. The vital test current output is picked
up from the WIU device. The current sensor output (J2) is connected to the WIU
device I/O using shielded cable.
DIGITAL INPUTS
CURRENT OUTPUT
Lamp
Driver
Lamp
Figure 2-3 Current Sensor Wiring without Terminal Board Adapter
Adapter Board
DIGITAL INPUTS
CURRENT OUTPUT
Lamp
Driver
Lamp
Figure 2-4 Current Sensor Wiring with Terminal Board Adapter
2-3
Document No.: SIG-00-11-10 Version: A.1
INSTALLATION
CABLE SHIELD
BATTERY
J1
J2
J4
J2
J3
+ + +
- - -
IN 3
IN 1
IN 2
WIU INPUTS
BELDEN 9939
CURRENT SENSOR OUTPUTS ARE
2.1.2.1 Current Sensor Output Connection
The current sensor output (J2) is connected using a shielded cable. The shield is
terminated at the current sensor output only as shown in
Figure 2-5. Belden 9939 or equival en t c a b le is recommended.
CAUTION
USE CARE TO ENSURE THE ELIMINATION OF
ANY FOREIGN ENERGY SOURCES.
CAUTION
ENSURE THAT THERE ARE NO SHORT
CIRCUITS IN THE WIRING BETWEEN THE
CURRENT SENSOR AND THE WIU.
NOTE
The shielded cable used in connecting the
current sensor output to the WIU device I/O
input has the shield terminated at the output
source (current sensor). The shield is NOT
connected at the WIU I/O to avoid creating a
ground loop. Trim any excess shield wire
flush with the wire insulation. Belden 9939 or
equivalent cable is recommended.
POSITIVE
OR EQUIVALENT
OPEN-COLLECTOR TRANSISTORS
SINKING CURRENT
(INTERNALLY REFERENCED TO
BATTERY NEGATIVE)
Figure 2-5 Shielded Current Sensor Output Connections
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2-4
INSTALLATION
J1
J2
J3
J4
J2
To
Terminal Board
From
Current Sensor
Existing
Terminal
Surge
To
2.1.3 Surge Protection
Siemen s Mobility, In c. strongly recommends installing primary surge protection on
extern al lines. A typ ical installation incorporating a surge suppressor on the wiring
going to the signal lamp is shown in the figure below. Siemens Mobility, Inc.
strongly recommends this type of installation.
CAUTION
SIEMENS MOBILITY, INC. STRONGLY RECOMMENDS
INSTALLING PRIMARY SURGE PROTECTION ON
EXTERNAL LINES CONNECTING TO THE VIU
Adapter Board
Lamp
Driver
Lamp
Arrestor
Earth
Ground
Figure 2-6 Typical Installation with Surge Suppression
2-5
Document No.: SIG-00-11-10 Version: A.1
INSTALLATION
Main
Expansion
Expansion
Expansion
Main
Expansion
J1
J2
J3
J4
J1
J2
J3
J4
2.1.4 Current Sensor Module Expansion
Multiple Current Sensor modules may be connected together to provide more inputs
while reducing the number of individual power and test wire connections . To ins tall
an expansion module, insert J3 of the expansion module into J4 of the main module
as shown in Figure 2-7. Up to nine additional expansion modules (maximum of 10
interconnected units) may be installed as shown in Figure 2-8.
Module
Module
Figure 2-7 Current Sensor Module Expansion
Module 1
Module 2
Module 3
Module 4
Figure 2-8 Multiple Expansion Modules (10 maximum)
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2-6
INSTALLATION
2.1.5 Threshold Settings
The current sensor module has adjustable threshold settings for each input. The
settings are adjusted via DIP switches located on the front of the unit. The DIP
switch settings are shown in Figure 2-9.
WARNING
IT IS THE RAILROAD'S OR AGENCY'S RESPONSIBILITY
THAT THE INSTALLATION IS FULLY OPERATIONALLY
TESTED TO ENSURE SAFETY. SYSTEM OPERATION MUST
BE VERIFIED PRIOR TO PLACING SYSTEM IN SERVICE.
WARNING
UNDER LIMITED CONDITIONS, LOW VOLTAGE FOREIGN
ENERGY MAY TRI GGER A CURRENT SENSOR. WHEN THIS
OCCURS, THE CURRENT SENSOR INDICATES THAT THE
LAMP IS LIT EVEN THOUGH IT IS NOT. THIS HAZARD
OCCURS MOST OFTEN WHEN USING INCANDESCENT
LAMPS.
TO AVOID THIS HAZARD, USE VOLTAGE SENSING
COMBINED WITH CURRENT SENSING TO DETECT THE
LAMP STATE.
NOTE
±1.03 Amps is the recommended setting for
standard lamps and is the factory default
setting. The ±0.65 Amps setting is reserved
for future use.
NOTE
Ensure the threshold setting is set for ALL
outputs.
2-7
Document No.: SIG-00-11-10 Version: A.1
INSTALLATION
Threshold - ±1.42 Amps
Threshold - ±0.65 Amps
A A A A B B B
B
OFF
ON
Threshold - ±1.80 Amps
Threshold - ±1.03 Amps (Factory Default)
(Reserved for future use)
Figure 2-9 Threshold Setting s
Document No.: SIG-00-11-10 Version: A.1
2-8
INSTALLATION
2.1.6 Example Installations
An example installation of a current sensor is shown in Figure 2-10 below. The
installation includes a current sensor module and an expansion module. Six current
sensor adapters are installed to provide the six lamp current to the sensor modules.
Six surge suppressors are installed to protect the equipment from power and
lightning surges. The current sensor modules are fed into an Sie mens Mo bility, I nc.
VIU 16i that will supply data to a network via hardwire or data radio.
Figure 2-10 Example Current Sensor Installation
2-9
Document No.: SIG-00-11-10 Version: A.1
INSTALLATION
An example drawing of current sensing of the individual signal lamps using an
Siemens Mobility, Inc. VIU and surge suppression is shown in Figure 2-11.
Figure 2-11 Example of Current Sensing for Individual Signal Lamps
Document No.: SIG-00-11-10 Version: A.1
2-10
INSTALLATION
An example drawing of a current/voltage sensing installation where current sensing
is used on the lamp common and voltage sensing is used on the individual signal
lamps is shown in Figure 2-12. The Siemens Mobility, Inc. VIU and surge
suppression equipment is used in the installation.
Figure 2-12 Example of Current/Voltage Sensing
2-11
Document No.: SIG-00-11-10 Version: A.1
Siemens Mobility, Inc.
2400 Nelson Miller Parkway
Louisville, Kentucky 40223
(502) 618-8800
Siemens Mobility, Inc.
939 South Main Street
Marion, Kentucky 42064
(270) 918-7800
Siemens Mobility, Inc.
700 East Waterfront Drive
Munhall, Pennsylvania 15120
1-800-793-SAFE
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