BASIC APPLICATION GUIDELINES & PROGRAMMING
_________________________________________________________________________________________________________
5-18
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
5.2.8.1 When a Track is Wrapped
PSO module occupancy outputs remain energized (no crossing activation), provided the PSO
receiver is healthy. Module input LEDs show de-energized when inputs de-energize but are
ignored. Wrapped tracks are indicated on the Display Module with a yellow “WRAP” indication
when the track is wrapped as shown in Figure 5-12.
Figure 5-12 Display Wrap Indication
The wrap on PSO ‘n’ RX 1(2) will also override the PSO ‘n’ RX 1 (2) Enable input.
If Emergency Activation (EA) is programmed ON and its physical input is de-energized,
wrapped tracks will change to unwrapped. Once EA is energized, tracks previously wrapped will
return to wrapped if no trains are present.
The crossing will activate while wrapped if the AND 1 XR Enable is programmed ON and the
AND 1 XR input is de-energized.
If the PSO receiver fails while the wrap input is energized, the warning devices are immediately
activated.
5.3
Logic Programming
The GCP5000 (GCE) provides programming options to do some enhanced logic functions
(compared with GCP5000). These options include:
•
8 Programmable AND gates
•
option Enable
•
option Wrap
•
optional NOT on some terms
•
4 Programmable OR gates
•
10 Programmable Logic Equations
•
Programmable pickup and drop delays on ANDs or AND enables
•
Programmable OR gates
•
Internal I/O states