FST 75/150
260-2210-002 EN064
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Important notes
Motor frequency
For the
FST 75/150
to operate at its optimum best and perform all of the required functions, the control unit
must be aware of the rated frequency
of the connected motor
. The rated frequency must be set before all
other work and settings are performed under menu item 05 (default setting 50 Hz).
Wiring up of the motor
The drive must be set to an operating voltage of 230V. Usually (motors 400V/230V), this is done by changing
the connections of the motor from star (400 V) to delta (230 V) connection. Sometimes, motors with 230/133
V are used. In these exceptional cases, the motor lines are connected to form a star (230V) connection.
Separated laying of motor line and limit switch line
For a reliable operation it is necessary to lay the motor line and the end switch separately from each other.
For line lengths of more than 15 m we recommend laying the motor and the end switch lines at a distance of
at least 2 cm. As separate accessories, motor and end switch lines are available in different lengths. They
are ready-made and provide for easier wiring.
Voltage boost
In some applications it is required to adjust the starting current for the motor. For this purpose the FST
75/150 is equipped with a voltage boost feature. It is controlled by a proprietary parameter, which can be
changed under menu item 06. The default value of 30 is suitable for most installations. To increase the
voltage boost set a value greater than 30. To reduce the voltage boost reduce the value to less than 30.
Speeds
For the FST 75/150 operate at its optimum best and perform all of the required functions, the control unit
must be aware of the rated frequency
of the connected motor
. The rated frequency must be set before all
other work and settings are performed under menu item 05 (default setting 50 Hz).
Where required or requested, the desired speeds for the slow speed, closing and opening as well as the
ramp times can be set at a later juncture by going through menus 40-48.
Through the default settings for the FST 75/150, all drives can usually be run for the installation once the unit
is connected to the mains. Where motors with a higher rated frequency are concerned, the maximum speed
is reduced during installation for safety reasons (Menus 40-48). Where 50 Hz drives with limit switches are
concerned, it is usually only necessary to correctly position the limit switches. In doing so, the pre limit
switches initiate the soft coasting. The factory default settings have been set to ensure a harmonious run for
50 Hz motors. Where drives with DES are concerned, only creep speed will be possible at first until the end
positions have been programmed. Once the positions have been programmed, the speeds will increase in
line with the pre-settings. The ramps adjust automatically. As a consequence, the control unit is now ready
for operation.
Sample settings variant for a unit with a 5 m orifice: Fast opening – fast closing up to 2.5 m in height –
subsequent closing with reduced speed.
The reduced speed enables the speed to adjust to the installed
safety system as a means of adhering to the forces required as per the norm.
Please test the opening and closing forces after initiation according to EN 12453!
