Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 97)

T400 Controller Facilities Manual

667/EB/20200/000 Page 9-37 Issue 9

9.6 SELECTED MANUAL CONTROL MODE

Refer also to Section 16.

MANUAL mode selected on the pushbuttons is recognized as a mode for priority

purposes and for use during UTC mode.

Manual mode will only become operative if it is a higher priority then the current mode

and if it has not been disabled.

9.6.1 Manual Mode

(If Manual Step-On facility is fitted see also section 9.7.)

With the MANUAL mode button pressed, Manual mode will be selected providing

there are no operating conditions for a higher priority mode (see section 9.12). During

Manual mode, only 7 stages and the all-red condition (Stage 0) are available to be

selected by means of push-buttons on the manual panel. No stage changes may be

made until the last phase minimum green in the current stage has timed off. When the

controller is ready to accept a selection, the AWAITING COMMAND indicator

illuminates and any subsequent push-button selection is implemented provided:

(i) No prohibited stage move condition is violated.

(ii) The requested stage is not deleted by the master time clock.

If any of these conditions occur, the PROHIBITED MOVE indicator illuminates. In

the case of (i) the stage can be selected via another stage change which is allowed, e.g.

to Stage 0, but in the case of (ii), the stage cannot be selected until the master time

clock inhibit is removed. Any phases deleted by the master time clock will not be active

during Manual mode. For control of non-fixed phases during Manual Control see

section 3.9.

When Manual Mode ceases, demands may be automatically inserted for selected non-

running phases to force a particular sequence. These demands are normally inserted to

ensure no vehicles are trapped against a red light, unless otherwise requested by a

customer.

9.6.2 Allocation Of Stages To Push-buttons

Stage 0 is always allocated to Push-button 0. Up to 7 of the remaining stages may be

allocated to any of push-buttons 1 to 7 as required (see Figure 21.5). Stages other than

those allocated to the push-buttons may appear during Manual mode. If one is active

when Manual mode first becomes operative it will continue to run until a new selection

is made. If one is used as alternative stage during a prohibited move, the stage will run

for the minimum period and then automatically change to the required stage.

During the interstage and while the stage is active, the indicator by the push-button

number that the stage is allocated to will illuminate on the manual panel. Push button

numbers would normally coincide with stage numbers although this is not necessarily

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Siemens EH.75M.11. Especificaciones Pagina 97