Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 62)

T400 Controller Facilities Manual

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

With the mode priorities defined, the controller adopts the highest priority mode for

which the following conditions of entry apply:

• Part time off (or flashing) period: Part time off selected by master time clock.

• Hurry call mode: Hurry call applied and any call delay expired.

• UTC mode: When the UTC mode code has been received by the controller.

• Manual Control selection: MANUAL selected on the manual panel.

• Cableless linking mode: A valid cableless linking plan is selected by the master

time clock.

• Bus/LRT/Emergency Vehicle mode: Entered if a request exists for priority

from a special vehicle detector, (e.g. LRT request).

• Vehicle actuated mode: Entered if a request does not exist for a higher priority

mode.

• Fixed Time mode: If no other mode is available this mode is run.

9.1 START UP MODE

The start up mode is entered to produce a safe signals on sequence when any of the

following conditions occur:

• The a.c. supplies to the controller are switched on or restored following a

failure, provided part time off is not selected.

• The signals are switched on by means of the SIGNALS ON/OFF switch or the

signals isolating switch (if fitted), provided part time off is not selected. This

facility is optional. The alternative option is that the signals turn on immediately

at whatever point in the cycle the controller has reached when the SIGNALS

ON/OFF switch is switched on.

• The signals are switched on by the master time clock at the end of a part time

off period.

9.1.1 Normal Start-up Sequence

The standard start-up sequence consists of three periods:

(a) Start-up Period

The start-up time is a period of 7 seconds which commences at the start of the ‘signals

on’ command. During this period all signals for all phases are off.

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Siemens EH.75M.11. Especificaciones Pagina 62