Mechanics of axles, motors and controllers always under control

No only the users of nowadays expect some technological products of safe use and that are quickly available. Also the engineers of design and the constructors of machines and systems expect an integral support of his partners of systems. The concept of hygiene Festo does not cover only to motors and controllers, but also to the mechanics of the axis.

“Although the subject of the hygiene in machines no longer is new, will follow playing a key paper in the construction of machines and installations” says Jürgen Kühnle, boss of Management of products electrical Axles in Festo”. This is due to the fact that it exists a big uncertainty in the market, and a lot of users can not handle a so complex subject without the support of his partners of systems”. In the applications that are not protected by policemen of hygiene, but where the people can go in in direct contact with the components of the plant, all the electromechanical systems have to guarantee a suitable reduction of risks through functions of integrated hygiene.

“To the users has to them offer a concept of global hygiene that cover from a system of central hygiene through functions of hygiene decentralised in the controllers of the engine, until a monitoring of the mechanics of the axis and a blockade of hygiene with characteristics of stop of emergency”, says Kühnle.

Before the users conformed with a concept of hygiene appropriately adapted. Many took any device of conmutación of hygiene and connected the function STO. Also they substituted the engine servo by an engine with brake. “A lot of manufacturers of machines think that this is sufficient”, adds.

Nevertheless, here do not take into account all the possible errors, like a setting of the erroneous attachment or a toothed belt cracked in the unit of investment that could disable the brake. These errors would do that they fell the car and the load, causing grave injuries. Besides, some no detected damages in the cojinetes could pull the toothed belt or damage the guide of rolling of balls that would do that it fell the axis after a crash. Therefore, the car could cause a collision.

“An entirely integrated solution supervises the mechanics of the axis and allows a subjection or a braked of hygiene”, explains the expert of the unit. This is exactly what does the electrical axis of hygiene EGC with system of measurement of route in double channel and unit of subjection of Festo. The mechanical system can be controlled by an engine codificador (first channel) and a system of linear measurement (second channel) (EGC-M). If it detects an error, like a toothed belt cracked, then a unit of fixation of simple or double channel EGC-HPN can initiate a reaction in matter of hygiene. It can originate a braked of emergency, or can use ‘only' to determine a position or like protection against fall.

With the module of hygiene CAMC-G-S1 the function of stop of hygiene STO can realizar in the controller of the engine of the range CMMP-ACE-...-M3. In combination with the system of hygiene CMGA the function of stop of hygiene SS1 and with the options of the axles EGC the function of hygiene SS2 and safe limited speed SLS also can attain.

The conventional devices of commando of hygiene, such as the switches of stop of emergency, switches of protection of doors, barriers of light and scanners laser can be connected to the system of hygiene CMGA. So prompt like these activate a requirement of hygiene, shoots a stop of hygiene like a SS1 or SS2 through the system of hygiene CMGA or monitors a speed limited of safe form in way of configuration. For an ease of use, exist programs of application pre-validated for a lot of machines. These reduce the complexity of a system of programmable hygiene to the simplicity of a relay of hygiene.