Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 24)

T400 Controller Facilities Manual

667/EB/20200/000 Page 2-4 Issue 9

However, in other modes, namely CLF, UTC, Fixed Time, Priority, Part-Time, Manual

and Manual Step-On, the modes influence the outcome of the stage change algorithm.

This can be done by:

a) applying stage/phase prevents,

b) masking out phase demand,

c) inserting stage demands,

d) masking out extensions, i.e. causing them to be ignored,

e) Suspending maximum green times.

Thus for above-mentioned modes, specific stages may be requested, and the controller

forced to serve them when required.

2.5.2 Usage of Stage Movement Restriction Tables

The controller will always use the stage movement restriction table, applicable to the

mode in which it is operating when it initiates the stage change.

EXAMPLE

If a priority demand invokes a stage change, the controller will be in priority mode due

to the priority demand and will use the stage change restrictions table applicable to

priority mode.

However, if the controller has already decided to make a stage change in the VA mode

and a priority demand is received, the controller will continue to make the VA move

although the mode will have changed. The controller will then only use the stage

movement restriction table applicable to priority mode if it makes any subsequent

moves whilst still in priority mode.

2.6 PARALLEL STAGE STREAMING

2.6.1 General

Parallel Stage Streaming will provide independant control of up to 4 separate

intersections, later referred to as Streams, from one controller, i.e. the four

intersections may be considered as being controlled by separate controllers with the

exception of working in Manual mode, Part Time mode (see section 2.6.3), linked

fixed time and manual step on (see section 2.6.4).

This facility would normally be used if there are to be no cross-stream Phase Conflicts.

However, cross-stream Phase Conflicts and cross-stream Linking can be covered by

using either cross-stream Phase Intergreen or Special Conditioning Software.

2.6.2 Stage Streams

The controller will support up to 4 streams (numbered 0 to 3). Each stream may

contain any number of stages but no stage may appear in more than one stream and the

total number of stages for all streams must not exceed 16.

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 307 308

Sin comentarios

Siemens EH.75M.11. Especificaciones Pagina 24