Langmatz EK 533, Руководство по эксплуатации

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5.3 PRF mode (like PR mode but with an additional flashing option for green)
Connection
• Supply: Permanent
voltage
• Software parameters:
Release green flashing:
active
Function
of optional input 3 = Red signal
(see Fig. 65)
Fig. 6
Description:
Traffic light red status is signalled to the device via an additional input. The jumper, which
activates the device supply via the green pedestrian signal, is not connected. Erroneous
red/green signals are detected and switch off the device. Flashing mode is also activated by
device parametrisation. Using a special flashing release signal (FRS), this mode enables acoustic
notification that the green phase is coming to an end:
Signal progression
Fig. 7
Detection:
The FRS is only activated if there is a green signal for at least two seconds. The status "Green
flashing" is detected by a trailing edge on the green signal. If there is another pulse within 700 ms,
the device continues flashing green. If there is no further pulse, signalling switches off. The FRS is
also switched off by a red signal.
In PRF mode, the lack of a red or green signal is detected as sleep mode. This status is detected
but not signalled.