Slack Rope Switch; Pull-In Safety Device - Becker S20 MLS Montage- Und Betriebsanleitung

Induction loop
An induction loop for automatic door opening can also be connected to terminals 2 and
3 in parallel with the UP button of the external triple push button, if required. If possible,
the induction loop should be set so that it gives a CONTINUOUS UP COMMAND.

Slack rope switch

A slack rope switch can be connected to terminals 12 and 13. For installation, the
jumper between terminals 12 and 13 must be removed. This input is debounced via
an internal timing element of approx. 0.1 s. If the slack rope switch is activated longer
than this period, the door is stopped in any position. During activation, every additional
door movement is stopped.
Caution
The "slack rope switch" input is not monitored to such an extent that
errors can be ruled out. If a combined slack rope/trap switch is used,
this must be connected to the EMERGENCY STOP terminals NA/ES.

Pull-in safety device

A safety switch can be connected to terminals NA/ES (EMERGENCY STOP) as a
pull-in safety device. For installation, the jumper between terminals NA/ES must be
removed.
External single push button
An external single push button can be connected to terminals 1 and 2 (IMP). The
push button commands are executed one after the other in the sequence UP - STOP
- DOWN - STOP.
If there is a fault, the push button commands are executed one after the other in the
sequence UP - STOP - UP.
Light barrier
A light barrier can be connected to terminals 10 and 11 (LS). For installation, the
jumper between terminals 10 and 11 must be removed.
If the light barrier responds during downward movement, the door is brought to an im-
mediate halt. After an internal time of 0.5 s has elapsed, the S20 MLS opens the door
again.
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