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T400 Controller Facilities Manual

667/EB/20200/000 Page 1-1 Issue 9

1. INTRODUCTION

This manual refers to the facilities available in the Type 400 Controller using firmware

PB321 and PB322. For precise details of facilities supported by earlier versions of

firmware see 667/SU/20200/000. This document is included in the General Handbook.

The controller conforms to the UK Department of Transport Specification MCE 0141,

but also incorporates extra facilities.

The operation of the controller is phase oriented. Timings and demands are associated

with phases and the control philosophy is designed to give right-of-way to phases in an

optimum manner.

It is necessary to group phases into stages for Manual Control, operation in Urban

Traffic Control Schemes and in Cableless Linking Schemes.

The grouping of phases into stages is conditioned by the traffic requirements and safety

constraints.

Requests for ROW are received by the controller from:

(a) ‘On-street’ detection equipment and pedestrian pushbuttons

(b) the UTC computer

(d) manual inputs

(e) special requests, e.g. hurry calls

The controller then orders the appearance of phases in accordance with the controller

strategy, the current mode operative and the demand requests for ROW. The

controller will always change stages cyclically.

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Siemens EH.75M.11. Especificaciones Pagina 17