In many industrial nations, electric motors account for more than half of the electricity consumption, which offers enormous energy saving potential. Speed control can easily reduce the excess energy requirements; and besides the saving of energy, a decrease in speed also offers a reduction in noise and an increase in the service life of the motor.
The speed controller is extremely compact and is housed in a standard bus terminal with a width of 12 mm
Beckhoff has expanded its Bus Terminal I/O offering in response to the need. The new KL2791 Bus Terminal is designed for direct connection to single-phase AC motors up to 100 W, enabling speed control of capacitor, universal and shaded-pole motors. This method is well suited to motors with fixed loads such as pumps and fans. The motor speed set-point being specified by a 16-bit variable in order to achieve flow rates from 10 to 100%. The motor is switched on and off with a practice-proven mains-synchronous pattern, which reduces power consumption further through controlled acceleration and deceleration.
The units are suitable for use in any bus system supported by the Beckhoff Bus Terminal system.
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