Sigma FOS-01 User manual

Doc #: FOS-DC-OP-14001-B
©Copyright 2014 Sigma Research Inc. Page 1 of 17
Operation Manual
Fiber Optic Switch (FiberSwitch™)
Model: FOS-01
SIGMA RESEARCH Inc.
259 Edgeley Blvd, Unit #2
Vaughan, Ontario, Canada L4K 3Y5
Tel: [phone]
Fax: [phone]
[e-mail]
www.sigmaresearch.ca
Notice of Proprietary Rights
The contents of this document are preliminary and subject to change without notice. This document confers upon the
recipient no right or license to make, have made, use, sell or practice any technology or inventions described herein. The
engineering details and design concepts illustrated in this manual are to be maintained in strict confidence and are the
property of SIGMA RESEARCH Inc. No component or detail of this manual is to be illegitimately used, nor disclosed,
without the written permission of SIGMA RESEARCH Inc. All rights are reserved. The contents of this document may not
be copied or distributed in any form without permission in writing from SIGMA RESEARCH Inc.

Index
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Index
1.0 Overview ............................................................................................................................................................................3
2.0 Technical Specifications ................................................................................................................................................4
3.0 Contact Travel..................................................................................................................................................................5
4.0 Hazardous Locations...................................................................................................................................................... 6
5.0 Installation and Environmental Considerations ........................................................................................................7
5.1 Operators..................................................................................................................................................................10
5.2 Optical Contact Blocks ..........................................................................................................................................10
5.3 Inserting FC Connector .........................................................................................................................................11
5.4 Chaining Multiple Switches ..................................................................................................................................11
6.0 Dimensions .....................................................................................................................................................................12
7.0 Ordering Number & Contents ......................................................................................................................................16
8.0 Warranty..........................................................................................................................................................................17

1.0 Overview
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1.0 Overview
The Fiber Optic Switch (FiberSwitch™) is a revolutionary device that opens new fields of application for fiber
optics as well as introducing a new method of controlling electrical devices. It outperforms electrical switches
in many applications such as hazardous locations and remote control over long distances. It acts as a switch
which interrupts a fiber optic signal to indicate a button press or selection. The Fiber Optic Switch is
essentially an optical contact block which connects to a variety of existing operators, making it a perfectly
safe switch for hazardous areas.
The system provides a safe optical signal (rated inherently safe Ex op is), which can be used in any type of
hazardous environment or explosive atmosphere.
Features:
Absolutely safe for installation in
hazardous areas, as it eliminates the
ignition source.
Immune to EMI/RFI and high voltage
power lines.
Eliminates electrocution and fire hazards
Can be installed up to 2.5Km away from
equipment it controls.
Uses Standard Multimode 62.5/125µm
fiber optic cable with FC connectors.
Low overall installation cost as fiber optic
cable is less costly than copper cable.
Unique fail safe feature that opens its NC
contacts if the optical contact block
comes off the operator
Stackable optical contact blocks up to two
tiers.
Allows for multiple Fiber Optic Switches to
be daisy chained.
Fiber Optic Switches
FOS-01-xxx
Up to 2500m
Hazardous Area
Non-Hazardous Area
Fiber Optic Cable
62.5/125µm, MM
IP 52 (NEMA Type 12)
Enclosure
Fiber Optic Interface
FOI-01-221

2.0 Technical Specifications
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2.0 Technical Specifications
Max. Distance: 2.5Km@850nm, 7Km@1310nm
Attenuation: <4dB* for 62.5/125µm MM fiber
Wavelength: 850nm, 1310nm
MM Graded Fiber: 62.5/125µm, OM1
Connector: FC
Operating Temperature Range: -25 - 60°C (-13 - 140°F)
Storage Temperature Range: -40 - 70°C (-40 - 158°F)
Humidity: 20-80% RH (non-condensing)
Enclosure: IP52 / NEMA Type 12
Operators: NEMA 30.5mm, IEC 22.5mm
Number of Optical Ports per Optical Contact Block: 2
Max. # of Stackable Optic Contact Blocks: 2
* Attenuation may be higher due to size tolerances of the
FC connector
Optical Contact Blocks
- NC
- NO
- NC-LB Late Break,
- NO-EM Early Make
Explosive Atmosphere ATEX*
- I/II 1G
- II 1D
- I M1
* When used in conjunction with the Fiber Optic
Interface FOI-01-221
Explosive Atmosphere IECEx*
- Ex op is IIC T6 Ga
- Ex op is IIIC T60°C Da
* When used in conjunction with the Fiber Optic
Interface FOI-01-221
Hazardous Area NEC 500, 505, 506 (CEC)*
Divisions:
- Class I,II,III, Div. 1,2, Group A, B, C, D, E, F, G,
Temp. Code T6
Zones:
- Class 1, Zone 0, AEx op is IIC T6 Ga
- Class II, Zone 20, AEx op is IIIC T60°C Da
* When used in conjunction with the Fiber Optic
Interface FOI-01-221
Weight
One optical contact block with no operator: 29g
(1oz)
Two stacked optical contact blocks with no
operator: 52g (1.8oz)
Standards, Codes & Directives
IEC 61010-1, IEC 60825-1, 2
IEC 60079-0, IEC 60079-28, UL1203,
NEC, CEC, RoHS, ATEX
Patents
US 7,786,428 Aug 31/2010
CANADA 2,614,920 Feb 14/2012

3.0 Contact Travel
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3.0 Contact Travel
A combination of a NC and a NO contacts will result in a "Break Before Make" operation while a combination of
a NC-LB Late Break and NO-EM Early Make will result in a "Make Before Break" operation.

4.0 Hazardous Locations
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4.0 Hazardous Locations
The Fiber Optic Switch meets the requirements of European Parliament Directive 94/9/EC, Equipment and
protective systems Intended for use in potentially explosive atmospheres (ATEX Directive) and IEC 60079-28
(Explosive atmosphere - Protection of equipment and transmission systems using optical radiation) when
used in conjunction with the Fiber Optic Interface FOI-01-221.
According to ATEX Directive, the Fiber Optic Switch is classified as Simple Apparatus "Ex op is" for the
following reasons:
- The device is entirely passive and non-electrical.
- Light energy produced by the Fiber Optic Interface meets the requirements for Ex Op is (inherently safe
optical radiation) per IEC 60079-28 and ANSI/ISA 60079-28.
The device being a "Simple Apparatus" shall not bear the CE mark according to the ATEX directive.
Therefore, the Fiber Optic Switch can be safely installed and operated in any type of hazardous area:
-ATEX Equipment Group I (Mines); All Categories (M1 and M2); All Gas and Dust Environments
-ATEX Equipment Group II; All Categories (1, 2 and 3); All Gas and Dust Environments
According to NEC 504.2, the Fiber Optic Switch is classified as Simple Apparatus for the following reasons:
- The device is entirely passive and non-electrical.
- The device does not dissipate any power that can increase its surface temperature over ambient.
-NEC 500 Class I (Gas and Vapor), Divisions 1 and 2, Group. A, B, C, D, Temp. T6
-NEC 500 Class II (Dust), Divisions 1 and 2, Group E, F, G Temp. T6
-NEC 500 Class III (Fibers or Flyings), Divisions 1 and 2
-NEC 505 Zones (Gas and Vapor): Zones 0, 1, 2, 20, 21, 22
According to NEC 504.4 the Fiber Optic Switch being a "Simple Apparatus" does not have to be listed.

5.x Installation and Environmental Considerations
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5.0 Installation and Environmental Considerations
Fiber Optic Switches shall always be installed in a protective metallic or non-metallic enclosure with a min.
rating of min. IP 54 (NEMA Type 3R or 4x) for outdoor locations and IP52(NEMA Type 12) for indoor locations.
When Fiber Optic Switches are installed in a non-metallic enclosure in hazardous locations, the enclosure
must be made of antistatic material* or it should be covered with a bonded durable conductive coating*. The
enclosure must be grounded or as a minimum must be in direct contact with a metallic structure that is
grounded.
The FOS protective enclosure as described above should also provide mechanical protection as required by
IEC 61010-1 (energy protection level greater than 5J).
*surface resistance <109 ohm@50% relative humidity (Ref. IEC 60079-0 section 7.4.2, UL1203 section 33.4)
Single Optical Contact Block Clearance Details:
Enclosure dimensions should be a minimum of:
Min. 28mm
Min. 28mm
Min.
5mm
H
D
W
Min.
30mm
Min.
30mm
Height(H):
57mm,
Width(W):
82mm,
Depth(D): 70mm, Between(B): 57mm
B

5.x Installation and Environmental Considerations
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Double Optical Contact Block Clearance Details:
Enclosure should be a minimum of Depth(D): 100mm.
Refer to "Single Optical Contact Block Clearance Details" for rest of dimension restrictions.
Min.
5mm
D

5.x Installation and Environmental Considerations
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5.1Operators
The Fiber Optic Switch is compatible with IDEC Corp. operators TW series and TWTD series. Refer to IDEC
catalog for operator specifications.
Operators snap onto the hooks of the adaptor plate to complete a fully assembled switch. Fiber Optic
Switches are available in 22mm and 30mm options.
Removing Operator:
Select a screwdriver with a tip width
between 4mm and 8mm, to
successfully latch onto both hooks.
IDEC TW Series
IDEC TWTD Series
Optical Contact Block
22mm Adaptor Plate
30mm Adaptor Plate

5.x Installation and Environmental Considerations
FOS-01 Operation Manual Page 10 of 17
5.2 Optical Contact Blocks
Fiber Optic Switches are available with one or two optical contact blocks. The second contact block is
attached to the bottom of the first, to provide two additional optical ports. Each optical contact block contains
two optical ports, with each port having the option of a Normally Open (NO) or Normally Closed (NC) contact.
! Do not disassemble or unscrew any parts of the optical contact block, as this will affect the optical
alignment of the Fiber Optic Switch causing higher signal losses.
5.3 Inserting FC Connector
Line up the FC Connector key with the key hole in the Fiber Optic Switch. Insert all the way until it cannot be
pushed any further. Once inserted, begin to screw the connector on the thread to the end until the FC
connector touches the flat surface.
! Make sure key is inserted and connector is fully screwed in. Fiber optic signal losses will significantly
increase if not connected properly.
Single Optical
Contact Block
Double Optical
Contact Block
FC Connector
Key
Switch
Key Hole