Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 35)

T400 Controller Facilities Manual

667/EB/20200/000 Page 3-6 Issue 9

All phases will normally be set to oppose each other, unless works specifications form

III is completed to specify which phases oppose which phases.

3.5 TIMING PERIODS

Each phase has its own minimum green timer, green extension timer, maximum green

timer and pedestrian blackout timer.

Each phase to phase transition has its own intergreen timer.

The following timing periods are set in the PROM at the time of configuration but may

be changed via the handset, using the commands in brackets.

3.5.1 Minimum Green (MIN)

When a phase gains ROW a minimum green period commences to time. For safety

reasons the phase cannot lose ROW until the minimum green has timed off, whatever

mode of control is operative. The minimum green cannot be terminated prematurely.

Stage changes will not take place until the last minimum green for phases in that stage

has timed off unless the associated phases run in the new stage.

The timing range is 0 to 255 seconds in 1 second steps.

3.5.2 Green Extension (EXT)

When a vehicle actuated phase (i.e. traffic, green arrow or dummy phase) is at green, it

is possible to extend it past the minimum green period by means of green extensions,

up to a maximum green period.

The occupation of an extension loop will generate a green extension for its associated

phase. The green extension will continue while the loop is occupied.

When the extension loop is cleared, the green extension will continue for a fixed period

- the extension time.

It is possible to program the controller so that extensions for a phase are lifted during

any stage that the phase appears in.

The phase cannot be terminated whilst the green extension is active unless it is

legitimately overridden (e.g. maximum green timer terminating or under influence of

UTC or CLF).

If no vehicles are detected for a period longer than the extension time then the phase

will ‘gap change’ if there is an opposing demand.

The timing range is 0 to 31.8 seconds in 0.2 second steps.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 307 308

Sin comentarios

Siemens EH.75M.11. Especificaciones Pagina 35