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MENU MAPS
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10-13
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version : B.1
10.1.2.5 Set to Default
Figure 10-9 shows the Set to Default menu. This is used to set all the MCF GCP Programming
parameters back to default.
Figure 10-9 Set to Default
10.1.3 PSO Programming
10.1.3.1 PSO ‘N’ Transmitter
Figure 10-10 shows the PSO Transmitter menu when the PSO Module Mode is set to Crossing.
•
PSO Module Mode
: range Crossing, Rx Only, Rx/Tx
•
Stick Cancel Time
: range 1-60 mins, default 15 min
•
Stick Cancel Input Used
: range Yes No, default No
•
Wrap Pickup Delay
: range 0-10 sec, default 5 sec
The PSO Module mode is used to select the main function of the PSO. When it is set to
Crossing
, it is assumed that the PSO will be used at the crossing with the island being used and
the two PSO receivers used, one for each approach. In this mode, the user can set the
parameters shown in Figure 10-10. In the crossing mode, the PSO must be set up so one
receiver is on one approach to the island, and the other PSO is on the opposite approach with
the island in the middle. In this mode directional stick logic is used so that the crossing will
deactivate after the train leaves the island while the exit approach is still occupied. This stick is
applied when the 1
st
approach and island have picked up. While the stick is set an occupancy of
the exit track is ignored. When the exit track becomes unoccupied the stick is cleared. The
failure of the exit track to pick up presents a hazard, since if the stick is not cleared and a train
enters the track circuit with the stick set, the crossing will not activate.
The GCP5000 (GCE) provides three methods of protecting against this scenario:
a) if any of the PSO receivers or island become unhealthy the stick will be cleared on this
PSO,
b) the stick will be cleared when the stick cancel timer expires,
c) an optional stick cancel input can be used, this is normally energized, and when de-
energized cancels the stick.