in
Parking and access control equipment manufactured in the UK
Automatic Raise Arm Barriers
Barrier Sequences Explained
7
Standard Barrier Entry “One Way“ Operation
1.
Barrier raise requested (keypad/swipe card etc).
2.
Barrier Raised.
3.
Barrier “No Passage” timer started.
4.
Car moves onto safety loop (free exit loop inhibited, no passage timer cancelled).
5.
Car moves off of safety loop.
6.
Barrier lowered.
B2A SEQUENCE
Where B is the safety loop, under the barrier, and A is the free exit loop the other side of the barrier.
B2A (Enter Site)
1.
Barrier raise requested (keypad/swipe card etc).
2.
Barrier Raised.
3.
Barrier “No Passage” timer started.
4.
Should “No Passage Timer” elapse before safety loop seen, go to 9.
5.
Car moves onto safety loop (free exit loop inhibited, no passage timer cancelled).
6.
Car moves off of safety loop.
7.
Car moves onto free exit loop.
8.
Car moves off of free exit loop.
9.
Free exit loop active again.
10.
Barrier lowered.
A2B (Leave Site)
1.
Car moves onto free exit loop.
2.
Barrier Raised.
3.
Barrier “No Passage” timer started.
4.
Should “No Passage Timer” elapse before safety loop seen, go to 9
5.
Car moves onto safety loop (no passage timer cancelled).
6.
Car moves off of safety loop.
7.
Safety Close timer started.
8.
Safety Close timer elapses.
9.
Barrier lowered.
Safety Loop
Free Exit Loop
ENTR
Y
EXIT
