44
MGC control unit
Function description
5.4.2
Pulse operation in both directions with vend count
This operating mode works similarly to pulse operation without vend count.
The pulse must be present between 0.2 and 1 sec.
In this operating mode, pulses for both passage directions can be stored and
processed one after the other.
If request pulses were stored for both directions, both directions are cleared at
first. The hold-open time starts running for both directions immediately.
The processing of the stored pulses is independent of the sequence in which
the pulses were received. This means that if there are pulses for both passage
directions, passage in both directions is possible. When a passage has been
completed, the control unit verifies again for which directions pulses are still
stored. If pulses are still stored, the hold-open time starts running again.
5.4.3
Permanent open in both directions
If a permanent signal is present at the two "Open entry" and "Open exit", the
control unit switches to the "Permanent open" operating mode for both
directions. This means that the passage is enabled in both directions and no
opening pulse must be given.
After removal of the permanent signal, the corresponding direction is locked at
once without completion of the hold-open time. The end position lock is not
activated in permanent clearance operation.
If a permanent clearance signal is applied during pulse operation, the stored
opening pulses for this passage direction are deleted.
5.4.4
Pulse operation in one direction, permanent open in the other
direction
When a permanent signal is only present on one of the two inputs "Open
entry" and "Open exit", passage is cleared in the corresponding direction. Pulse
operation remains active in the other direction.
If a permanent clearance signal is applied during pulse operation, the stored
opening pulses for this passage direction are deleted.
