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DICTATOR Technik GmbH · +49 (0)821 246730 · [email protected] · www.dictator.de · 22.06.22
Technical manual: SQUARE 940-2
4.1 FUSE PROTECTION/MAIN SWITCH
The control unit must be fused with 16 A on the mains side. In addition, a switch or a socket for
a pluggable connection cable should be installed in the immediate vicinity of the control unit,
since some error messages require the control unit to be completely switched off and on again.
4.2 CONNECTION OF EXTERNAL DEVICES
Connect all supply lines of your external devices (door operator, operating buttons, SHE safety
devices, limit switches... if necessary) to the pluggable terminal blocks.
Maximum cable length 30 m.
4.3 CABLES
Please make sure that you use a separate screened cable for the cable to the motor and to the
encoder in the motor.
When inserting all screened connecting cables into the control housing, use a metal EMC cable
gland.
Motor connection: 4 x 1.5 mm
2
incl. protective conductor (screened). Connect the screen
both to the motor and to the controller. Connect the motor in delta connection. Cable mark-
ing: red
Motor temperature sensor connection: 2 x 0.5 mm
2
. Cable marking: yellow
Encoder connection: 4 x 0.25 mm2 (screened). Only connect the screen in the control
system. Cable marking: white
Connection brake DICTAMAT 900-21: 3 x 1.5 mm². Cable marking: blue
Connection brake DICTAMAT Move AC: 2 x 0.5 mm². Cable marking: blue
Connection electromagnetic clutch (optional): 2 x 1.0 mm². Cable marking: green
Connection limit switch release clutch (optional): 2 x 0.5 mm². Cable marking: violet
Connection of operating elements in controller: 0,5 mm²
If limit switches are used instead of an encoder, a reference run after power failure is only
required if the door is between the end positions OPEN and CLOSED. In limit switch opera-
tion, the pre-close limit switch is automatically defined as the reference point. This is always
approached by constantly pressing the CLOSE key (even if the Pre close limit switch has already
been actuated and overrun.
4. Electrical connection
