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BLOCKsignalling
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Connecting the Outputs
Each channel has an output, which switches to 12V to switch the output on.
There are resistors built-in to the controller, so external resistors are not required. If
your signal already has resistors connected, these can remain if you wish, although
the signal may appear slightly dimmer.
Program 2 (2-Aspect Signalling)
This program simulates the operation of a two aspect signal, which is normally
showing green. The module searches for a train, and if one is detected in front of the
sensor, the signal immediately switches to red.
Whilst the sensor is covered, the signal stays at red. As the train passes over the
sensor, any gaps between the rolling stock which are shorter that the release time
programmed are ignored.
Once the train has cleared the sensor, and the release time expires, then the "red
time" timer starts. When this expires, the signal turns back to green and starts
looking for trains again.
The "release time" can be adjusted if slow moving trains cause the signal to
prematurely switch back to green before the train has cleared the sensor.
The "red time" can be adjusted to a realistic duration for a train to clear the section of
track protected by the signal.
When supplied, or following a factory reset, the module will operate in 4-aspect
mode. It needs to be reprogrammed as follows.
BLOCK
signalling
RED
GREEN
CH3+
CH1+
GND
+
-
Led Connections
+
-
Detector
-
+
POWER
SUPPLY
