Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 289)

T400 Controller Facilities Manual

667/EB/20200/000 Page 25-18 Issue 9

For demand dependent phases gaining right-of-way when the RLF1 indication is

already active, the RLM delay is applied from the point at which the phase could first

appear, if it were demanded. If the RLF1 indication is not active at this point, but

appears later then the RLM delay is timed from the activation of the RLF1 signal.

Once the RLM delay has expired, the phase will appear as soon as its demand

conditions are satisfied.

Once the RLM delay has started timing off, any hold all-red (i.e. intergreen extension)

inputs are ignored.

On stage changes where a demand dependent phase could lose right-of-way, any RLM

delay times on other phases due to the demand dependent phase are only applied if the

demand dependent phase has actually appeared in the preceding stage.

25.4.1(c) Response Timing And Staggered Phase Starts

A vehicle red lamp fail occurring during the interstage period will be actioned,

provided that the failure occurs more than 500mS before the start of the phase (i.e.

changing to right-of-way, for example the start of red/amber for traffic phases).

If the red fail occurs after the start of a phase, no phase delay can be introduced on that

particular phase, but other phases which have not yet appeared can still be delayed.

The above method of operation ensures that the RLM delays are introduced as soon as

possible, even though this means that the appearance of some of the phases in the stage

may be delayed relative to other phases which have already started.

25.4.1(d) Flashing The DFM Lamp

When all RLF1 signals are de-activated, and the manual reset is entered if ‘latching

RLM’ operation is selected (C6), the DFM lamp reverts to either off or on steady,

depending on whether there is a DFM fault active.

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Siemens EH.75M.11. Especificaciones Pagina 289