American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 94)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-89 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

equipment space by 30%.

9.4.5.19.4 Security of Equipment

All signal equipment housings, cases, junction boxes, switch mechanisms, and signals shall

be secured with an appropriate security device.

9.4.5.19.5 Maintainability

The signaling equipment shall be designed and constructed to facilitate quick and easy

troubleshooting and module replacement. The design shall require a minimum of testing

following module replacement.

Built-in indicators or meters shall be provided for routine maintenance, testing, and

diagnostic purposes. The use of plug-in devices, such as laptop computers for the

downloading of data from devices, including microprocessor interlockings, shall be allowed

in addition to a basic set of fault indicators. As a minimum, LED indicators shall be provided

for circuit boards to indicate the health status of a circuit board. A failed indication shall

signify to a maintainer that the board should be replaced.

9.4.5.20 SCADA Interface

The design shall provide remote control and monitoring of train control via the SCADA

system. The design shall provide at least the following remote controls:

 Request or cancel route from all wayside signals

 Move all switch machines

The design shall provide at least the following indications and alarms:

 Occupancy of all track circuits, including overlays

 Wayside signal aspects

 Crossing gate status (all gates down)

 Switch position

 Switch locked

 Traffic direction

 Signal time lock

 All other warning indications necessary to alert personnel of possible problems or

failures (such as Battery/Charger alarms).

 Intrusion and fire alarms and equipment trouble.

9.5 COMMUNICATIONS - GENERAL

9.5.1 Introduction

This section describes the criteria for design of the communications system and

associated subsystems, including specific requirements of all subsystems and their

relationship to other communications subsystems and other systemwide elements of

the LRT and HRT System Projects.

The communications system shall provide the necessary subsystems to support the

total operational requirements of the LRT and HRT System. The following

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American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 94