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Technical manual: SQUARE 940-2
DICTATOR Technik GmbH · +49 (0)821 246730 · [email protected] · www.dictator.de · 22.06.22
The SQUARE 940-2 control system has been developed for the DICTAMAT AC-21 door opera-
tors (sliding door operator DICTAMAT 900-21 and hinged door operator DICTAMAT 310-21).
It meets the demands of the EN 12453 concerning the safety of powered doors.
Its main advantages are:
Autocontrol, i.e. it shuts itself down automatically upon detecting an error that might lead to
a dangerous situation.
Direct connection of safety equipment according to the EN 13849-1 without additional
evaluation device.
Different „Stops“ of the door adjustable. This protects door and door operator during normal
operation from unnecessary wear and tear due to an abrupt Stop. In case of danger the
maximum stopping distance according to the EN 12453 is observed.
Connection possibility for a mechanical braking device.
The SQUARE 940-2 allows for a position control by an encoder and thus a very exact
positioning.
Graphic display on the casing lid with status and error indication.
The membrane keys on the lid of the casing serve for operating the door.
The casing of the SQUARE control systems has been designed with as small as possible outer
dimensions, in order to fit also into limited space. The interior of the casing, however, offers
sufficient space to house - if necessary - additional devices or batteries.
The carrier board is provided with threaded holes for standard top hat rails. This saves the
expenses for additional casings, their installation and connection.
1. General information
