Speed Regulator for air motors sets new standards for the drive technology
Smart Sensor regulates nominal speed
A motor needs to be powerful while still being small and robust. During the selection of an air-motor for the automated technology, especially its small size and mass are convincing advantages. An air-motor offers notable significance in both areas. When compared with an equivalent electric motor, an air-motor has only one-third of the size and one-fifth of the mass. This advantage is a supreme argument for the use of an air-motor in handheld machines and also in stationary equipment. However until now, there was a deficiency - the speed regulation. DEPRAG SCHULZ GMBH u. CO. has now set a new standard with an innovative speed regulator offered for their air motors: With help of a thought-out sensor technology, the powerful air-motor will always hold the desired, preset speed.
Product manager Dagmar Dübbelde explained: “It is characteristic for an air-motor, that it can be operated in a wide field of changing loads. When operated without load, the motor runs at its rated no-load-speed. If the load increases, the speed of the motor decreases. So, an air-motor can be operated at approx. 15% up to 100% of its nominal speed, depending on its load requirement.” For applications, where the torque varies, the speed varies as well.
This can cause problems. Lets examine an agitator or mixer, where a constant speed is a prerequisite for an accurate production. If the viscosity of the mixture or its volume changes in the container, an undesirable speed change occurs. The explicit request to keep a constant speed in the agitator, resulted into the development of a speed regulator by the renowned air-motor manufacturer DEPRAG,
The new DEPRAG speed regulator has a simple and reliable operation. The non-contacting speed sensor is integrated directly into the air-motor, between the actual vane-air-motor and the gearing. The sensor acquires the current speed with which the motor operates. The data of this IS-value is now transferred in form of a digital signal to the regulator. The regulator “acknowledges” the desired NOMINAL-value, which can easily be input over a LC-display on the controller. Now, the regulator compares the two values. If there is a variation between the IS and NOMINAL-speed, a special valve is actuated, which regulates the airflow for the motor and its speed. Result: The air-motor operates consistently within the required speed range.
Please find further information under www.deprag.com.
