BRIEF

Lighting Control Systems Product Comparison

Purpose This document briefly describes the differences between a Programmable Logic Controller System, the basic TLACS (Tunnel Lighting Addressable Control System) configuration, and the TLACS’s advanced configuration for tunnel lighting.

PLC Comparison The PLC (Programmable Logic Control-ler) System is used to control tunnel light-ing systems. Each system is normally cus-tom-made for each particular tunnel and offers limited features in comparison to tunnel addressable systems, such as those developed by Nyx Hemera Technologies.

In the Programmable Logic Controller System, general purpose digital outputs are used to control power contactors that are installed in the electrical (DB) cabinet. The contactor, or relay, then con-trols the lamps that are pre-wired accord-ing to pre-defined lighting stage scenarios that were calculated during the design phase. As the entire configuration is typi-cally hardwired, it is very difficult to make any changes after installation; a modifica-tion to the wires often requires that a part of the tunnel be closed.

The Programmable Logic Controller Sys-tem does not offer maintenance man-agement information and controls, such as lamp failure, burn hour usage, etc. This lack of vital information can cause in-creases in maintenance costs for the op-erator, who cannot optimize the number of tunnel interventions.

As the Programmable Logic Controller System has a rigid hardwired structure, every twin lamp luminaire will have one set of cables with every contactor, that is, one (1) set of cables for each lamp. This ultimately increases the total length of the cable, number of cable accessories, and the labor costs for installing the control system in the tunnel

The Programmable Logic Controller Sys-tem offers very limited interfacing capabil-ities with the Integrated Traffic and Plant Management System (also called ITPMS); the system provides simple information on lighting stages and basic status reports.

PAgE 1

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The following table compares different tunnel features for Programmable Logic Controller system, TLACS Basic and TLACS Advanced configurations.

PAgE 2

Characteristics

Individual lamp monitoring and diagnostics

VoltagePower factor

CurrentLamps status

Lamps Configurable fail-safe switching

of lamps Individual lamp control under specific

safety rulesLamp alternation

Integrated dynamic repeater in each lamp

Group of lamp group lamp monitoring group lamp diagnostics group lamp control group fail safe mode

Firmware upgrade through the communication network

Supports “Force Lamp On” on some specific lamp types

Integrates infrared interface for local diagnostic and maintenance

Field Test Tool (FTT) for local maintenance and diagnostics

Redundancy Lamps

Communication networkNetwork controller

Server-routerServers

Network infrastructure

PLC System

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TLACS Basic

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TLACS Advanced

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BRIEFCONFIDENTIAL INFORMATION

© February 2011

PAgE 3

Characteristics

Interface with Integrated Traffic and Plant Management System (ITPMS)

SCADA base systemgraphical view

Alarm-based

Historical DataLighting stageLamp failure

Luminescence camera

Lighting Stage based on lumines-cence camera

Lighting Stage based on time schedule

Configuration of lighting stage - pattern

Shared luminescence camera data across network

Shared time base schedule data across network

Reporting Burn hour per zone

Preventive maintenanceCorrective maintenance

Report generatorDesigned for tunnel lighting

Using single twisted pair or ex-isting power line wiring

Meets IEC / EMI standards

Proven system

Support multiple-operator workstation

PLC System

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Limited

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TLACS Basic

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Program-mable

Optional

Optional

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TLACS Advanced

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The following table compares different tunnel features for Programmable Logic Controller system, TLACS Basic and TLACS Advanced configurations.(suite)

BRIEFCONFIDENTIAL INFORMATION

© February 2011

PAgE 4

TLACS Basic

vs. Advanced Configurations

Power line communication technology or

Dedicated wire

LuminanceCameras (LCAMs)

ITPMS ControlRoom Workstation

Operator ControlRoom Workstation

TLACS Basic Configuration TLACS Advanced configuration

BRIEFCONFIDENTIAL INFORMATION

© February 2011

PAgE 5

Server-Router (SVR) and Gateway Server (GSR)As an optional feature of the TLACS Basic configuration, the SVR redundancy is available.

Network Controller Cluster (NWC)The TLACS’s basic configuration integrates the Gateway Server (GSR) and the Server- Router (SVR) with the Network Controller Cluster (NWC). The ITPMS communicates directly with the NWC to retrieve TLACS data.

Servers (TMC)The TLACS’s basic configuration may not include redundant Main Controller Cluster (TMC). The ITPMS runs directly on a workstation. All historical data and the configuration management database (CMS) are saved on the workstation. This workstation communi-cates directly with the Network Controller Cluster (NWC).

Historical Data and ReportThe TLACS’s basic configuration will save less historical data and reports than the TLACS’s advanced configuration as the SCADA System runs directly on a workstation.

Number of DevicesThe following table compares the maximum number of devices in the TLACS’s basic and advanced configurations.

Devices

Maximum number of workstation computers

Maximum number of redundant SVRs

Maximum number of GSRs

Maximum number of redundant NWCs

Maximum number of cameras

Maximum number of LPCs

TLACS basic

1

1

0

8

4

2000

TLACS Advanced

As required

16

2

96

32

32000

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© February 2011

+ 1 (65) 8523 7010

99 St-Vallier Est, suite 100Québec, QC G1K 3N9Canada

+1 (418) 977-7788+1 (418) 977-7798

Singapore

+ 1 (65) 8523 7010

99 St-Vallier Est, suite 100Québec, QC G1K 3N9Canada

+1 (418) 977-7788+1 (418) 977-7798

Singapore

nyx-hemera.com

AmerICA • europe • mIddLe eAST • AfrICA Nyx Hemera Technologies Inc.109 St-Vallier Est, suite 100Quebec City, Canada 1 (418) 977-7788 1 (418) 977-7798info@nyx-hemera.com

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Disclaimer: All of the above information, including drawings, illustrations, and graphic designs, reflects our present understanding, and is to the best of our knowledge. We believe that the data presented is accurate and reliable. Users, however, should independently evaluate the suitability of each product for the desired application. Under no circumstances does this constitute an assurance of any particular quality or performance. Such an assurance is only provided in the context of our product specifications or explicit contractual arrangements. Our liability for these products is set forth in our standard terms and conditions of sale.

Compared to the Programmable Logic Controller System, the TLACS offers more control and better securi-ty. In addition, the TLACS is easier to operate, more flexible, and more cost-effective.

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ConclusionThe Tunnel Lighting Addressable Control System (TLACS) is the most complete and technologically advanced solution on the market. It can easily adapt to any existing or new lighting system. The TLACS:

❖ Automatically adapts the brightness at a tunnel’s entrance, according exterior luminance; ❖ Monitors light use-life, which enables operators to get preventive maintenance reports; ❖ Enables quick and easy installation and configuration of LPCs (local product controller) in the tunnel; ❖ Controls each light individually; ❖ Is optimally modular: it can adapt to any light system and any type of tunnel.

The Tunnel Lighting Addressable Control System (TLACS) allows automatic control and monitoring of multiple luminaires. It is specifically designed for road light controls.

The TLACS system helps operators to monitor and control where lamps can be turned on or off, on-demand manually, automatically upon receiving a signal (from the camera interface), or according to a predetermined schedule.

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© February 2011