Pedestrian Barrier High Door MPH 112
Start-up and operation
5817,5005EN / Version 01
75
11.5.4 Normal operation with pulse storage
In this operating mode, up to 5 opening pulses can be stored and
processed sequentially in the order in which they occur (only in
bidirectional mode).
When at least one request pulse has been stored, the hold-open
time starts to expire immediately. As soon as a passage has been
completed, the hold-open time restarts if a pulse is still stored.
The pedestrian barrier remains open until the last opening pulse
has been processed.
11.6 Special cases within motion sequence
11.6.1 Obstruction detection
Normally, a person in the safety zone is protected by the safety
light barriers. It is, however, possible that there is an object (e.g. a
suitcase) in the safety zone when the glass wings close which, due
to its form, is not recognised by the safety light barriers.
The behaviour of the barrier when an obstruction is detected
depends on how DIP switch S2.8 is set.
11.6.2 Attempted break-in
When the glass wings are in their closed end position, they are
blocked (linkage at top-dead-centre). However, should someone
succeed in pulling the glass wings out of their end position, an
alarm is given.
11.6.3 Emergency situation
If the input "emergency" is interrupted during operation, the
pedestrian barrier goes immediately to a safe condition, i.e. power
to the motors is cut off and springs pull the glass wings to the open
position. The lane is thus free for passage in both directions.
The control system returns to operation when there is voltage
again at the input "emergency".
