2 SYSTEM OVERVIEW
The Siemens ST950ELV family is the latest in a long line of highly integrated traffic
controllers.
The ST950ELV Controller can be supplied either in a single-door outer case with a
6U logic rack and equipment mounting frame or as a fr5ee-standing rack housing
the power supply, CPU card and Lamp Switch cards with space for up to 16 x 4
channel detector cards.
2.1 Features
The main features of the ST950 family are:
• Conforms to the UK Highways Agency specification TR2500
• 32 phases, 32 stages.
• 8 streams.
• 8 maximum green sets.
• 8 hurry calls which are in priority order.
• 8 uni-directional detector loop units.
• Multi-mode operation with stage ripple change facility for improved
intersection capacity.
• Fully integrated MOVA7, UTMC OTU and Stratos monitoring functionality
• Fully integrated Light Rapid Transport (LRT) mode for use at Tram / Road
intersections.
• Fully configurable lamp sequences for worldwide application.
• Fully integral and configurable lamp monitoring facility.
• Flexible part-time and start-up modes, allowing any stream to be sent in and
out of part-time mode without affecting any others.
• Cableless linking (Plan) facility with sophisticated plan timetables and 32 plan
groups.
• Event timetable which supports actions based on 32 independent events with
easy programming.
• Time system with full date details – automatically time synchronised to central
system where the controller linked to Siemens UTMC central system.
• Date stamped rolling log providing detailed history of events and faults,
coupled with improved presentation to aid recognition of entries.
• Uncomplicated web browser user interface capable of multi-language support
• Support for up to 240 I/O lines via I/O cards and Intelligent Detector
Backplanes
• RS232 and USB interfaces for handset, modem and GPS
• Major configuration changes with signals on
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