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Technical manual: SQUARE 940-2
DICTATOR Technik GmbH · +49 (0)821 246730 · [email protected] · www.dictator.de · 22.06.22
5.12.7 Motor adjustment
Options
Description
Motor Speed
This is the normal motor speed at the given frequency, e.g. 1350
rpm at 50 Hz. See motor data for speed. This is used for internal slip
measurement
Motor / Rotary encoder direction:
Direction Normal
No change.
Motor Rev Motor reversed.
Enc Rev.:
Rotary encoder reversed.
Motor &
Enc Rev.
Motor and rotary encoder reversed.
VF Open
This is the point at which the maximum voltage is supplied to the motor.
This is relevant when the door opens in automatic mode.
VF Close
This is the point at which the maximum voltage is supplied to the motor.
This is relevant when the door closes.
Boost Open / Boost
Close
The torque boost increases the intermediate circuit voltage and thus the
torque when the motor accelerates or starts up. If the boost is set too low,
the door may not move and if it is too high, an overcurrent event may
occur. Due to the large number of door types, this is individual for each
installation. This is relevant if the door opens/closes in automatic mode.
High Boost
Changing this value activates “High-Boost“. This is used when the door is
opened between the “fully closed“ and “high torque“ positions.
If the High Boost Distance parameter is different from 0, the High Boost
function is also enabled under the conditions described in High Boost
Distance. Set the value to 0 to disable the High Boost Distance function.
Switch F. Open /
Switch F. Close
Depending on the motor type, certain switching frequencies can lead to
an unpleasant noise from the motor windings. This noise can be reduced
by changing the pulse frequency in the range from 2.5 to 8.0 kHz.
(Recommended value: 2.5 kHz).
Note: Increasing this setting will increase power dissipation and heat the
motor.
