Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 32)

T400 Controller Facilities Manual

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

3.2.2(b) MCE0141 Audible Indication 2 (High Voltage)

The audible signals are driven direct from the aspect supply to the pedestrian red and

green signals via relay contacts. An I/O port will be used to drive a relay to disconnect

the red and green feeds to the audible signal when it is not required. Eight pedestrian

signals will be controlled usually by timeswitch control.

8 relays are provided and driven from an output port bit to switch the above feeds on

and off.

The handset command “DET” for the specific output port/bit can be used to switch

this facility permanently ON, OFF, or allow it to follow the output state as dictated by

the controller logic.

3.2.2(c) LRT Phase (Option for Export)

This is a pedestrian phase used to control Light Rail Transit vehicles via a 2-aspect

signal stop and proceed. The proceed may be ahead, left turn or right turn arrow, as

required by the method of control.

(N.B. If two different movements are required for proceed, e.g. ahead or left turn, then

two phases must be used.)

The standard signal sequence is as follows:

stop - at no ROW

proceed - at ROW (treated as a green for conflict purposes)

flashing proceed - leaving right of way (changing to No right of way)

3.2.3 Green Arrow Phase

A green arrow phase controls vehicle movements via a single aspect green arrow.

There are two types of green arrow:

- Filter

- Indicative

3.2.3(a) Filter Green Arrow

A filter green arrow may be used to allow filter traffic to gain ROW in advance of the

main movement. It is illuminated during the stage or stages preceding the stage in

which its associated phase appears.

It will remain illuminated during the interstage period, normally until its associated

phase gains ROW, when it will be extinguished.

Alternatively, it can remain illuminated during the green of its associated phase and

extinguish at the commencement of the amber leaving.

For safety reasons, and in the U.K. to meet DTp Specifications, a filter green arrow

must always be followed by the green of its associated phase. To achieve this, a

demand dependent filter green arrow must also demand its associated phase. A filter

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Siemens EH.75M.11. Especificaciones Pagina 32