American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 80

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METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS
DE304.09 9-75 Revision 4 : 05/09/12
Metro Baseline Re-Baseline: 04/29/10
reflective paint.
All equipment-housing openings shall be screened or sealed to prevent entry of animals and
insects to the extent practicable. All entryways shall be sealed following installation of
cables and wiring entering the housing.
All insulation material used to line the interior of equipment housing walls, doors and roofs
shall be flame retarding and non-electrically conductive, and shall not introduce a hazard of
any type.
Doors of housings shall be capable of being secured by a standard padlock and equipped
with a weatherproof seal.
All equipment housings shall be designed to accommodate possible future expansion of
equipment space by 30%.
9.4.4.16.4 Security of Equipment
All signal equipment housings, cases, junction boxes, switch mechanisms, and signals shall
be secured with an appropriate security device.
9.4.4.16.5 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.
9.4.4.17 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
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