Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 96)

T400 Controller Facilities Manual

667/EB/20200/000 Page 9-36 Issue 9

9.5.3 Control From A Remote Pushbutton

If, on pressing the hurry request button, the confirm indication does not illuminate then

this indicates that the request has been rejected due to either:

- The Prevent Timer being active.

- The Delay Timer for a higher priority hurry call being active.

- Hurry Call mode being disabled.

- Any Special Conditioning which prevents the input of the Hurry Call.

e.g. Prevent Hurry Call 1 input whilst prevent timer for Hurry Call 0 is active.

The fact that the HURRY ACTIVE indicator is illuminated following the request only

indicates that the hurry request has been accepted and latched into the controller. The

servicing of the request may be delayed because a higher priority mode is active or a

higher priority hurry call is requested.

In the case where UTC mode is a higher priority than the Hurry Call mode then, on

receipt of a valid hurry call request, the confirm indication will normally be transmitted

to the central office for actioning (either by relinquishing UTC mode or by introducing

a special hurry call plan in UTC mode).

9.5.4 Control From A Queue Detector

Normally, the signal for the queue detector is processed by a call/cancel facility. While

the output of the call/cancel is active it may be required to force and hold the hurry call

stage indefinitely. To achieve this, the prevent period is set to zero and the hold period

is set at some small value, say five seconds. When the hold period expires, the hurry

call stage is immediately requested.

When the hurry call request from the call/cancel facility goes inactive, this is taken as a

cancel request and the hurry call stage is terminated. (This requires special

conditioning.)

The hurry call may be interrupted by a higher priority mode and on terminating this

mode the hurry call is serviced again only if it is still requested.

9.5.5 Timings Range

The range of timings for the Delay, Hold and Prevent periods is 0 to 255 seconds in 1

second steps.

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 ... 307 308

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Siemens EH.75M.11. Especificaciones Pagina 96