Emotron says that VSA/VSC drives can effectively start and stop, reducing the risk of water and other damage, which alleviates the need for expensive motor control valves. This controller also uses motor speed control to achieve the required level. This product shows a good energy saving effect in comparison with a throttle valve or a regulating valve. An embedded "hibernation system" works when the machine does not need to be running to maintain the required pressure, halting the machine's related tasks.
These products can be adapted and applied to different load conditions. For example, for different pumps, fans, compressors and mixing machines, the product has eight different preset programs to suit them.
Variable speed drives for low power applications
Swedish motor and drive specialist Emotron has developed VSA/VSC, a range of compact variable speed drives for low power applications. The drives are equipped with several advanced functions for pumps, fans, compressors, mixers and cranes, the company says. Suitable for motors of 0.18-7.5 kW, and completes the Emotron range which now covers motor powers of 0.18-1,500 kW.
The VSA/VSC drives have efficient starts and stops, which eliminate the risk of water hammer and other damage, lessening the need for expensive motor-controlled valves, Emotron says. The drives also adapt motor speed to the level required, saving energy when To throttling valves or dampers. A built-in sleep function pauses the motor when it does not need to be run in order to keep up the required pressure.
Different load types can be handled by the drives, using, for example, constant torque for cranes and mixers and square torque for pumps and fans, and the drives have eight programmable pre-set speeds, the company says.
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