Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 37)

T400 Controller Facilities Manual

667/EB/20200/000 Page 3-8 Issue 9

No intergreen period is reduced below its value during phase changes. In the event of

different intergreen values to phases gaining ROW, the longest intergreen will be

effective.

If phases conflict, but due to stage movement restrictions, the phase to phase transition

never takes place, the intergreen value should be set the same as the intergreen limiting

value for safety reasons. The I/G’s D-A and C-A in Figure 21.4 are examples of this.

The timing range is 0 to 199 seconds in 1 second steps.

Figure 21.4 illustrates the allocation of intergreen timings for conflicting phases for the

intersection in Figure 21.2 and Figure 21.3. As an example, intergreens A-E and B-E

are 5 seconds and intergreen C-E is 7 seconds. This would have the effect of a 5

second intergreen to Phase E on a stage change 1-3, but 7 seconds on a stage change

2-3.

3.5.6 Starting Intergreen (IGS)

The starting intergreen period is a safety period in Start-Up Mode before any phases

gain ROW, (see section 9.1).

3.5.7 Conditioning Timers (PIR)

Up to 32 conditioning timers (0 to 31) are available for use as auxiliary timers using

PB321, and up to 64 conditioning timers (0 to 63) are available for use as auxiliary

timers using PB322 issue 3 and later.

The uses of the conditioning timers include the following:

(a) Delay, Lift Inhibit and Override Timers for use with a Pelican Link

facility.

(b) Holding a stage for a specified fixed period when no phases gain ROW.

Normally dummy phases are used for this purpose, but this method may

be used if no dummy phases are available.

several times, e.g. to time 20 minutes, give the timer a value of 120

secs. and run it 10 times.

(d) Switched window timers.

(e) Limit Green watchdog timer.

(f) Hurry call watchdog timer.

(g) Intergreens extended by curtailed extensions.

(h) Special facility, if applicable.

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Siemens EH.75M.11. Especificaciones Pagina 37