Servo amplifier offers improved safety, productivity and energy efficiency

08 May 2012

With the introduction of the new MELSERVO MR-J4 series - and corresponding positioning modules, motion modules and motion control systems - Mitsubishi Electric believes it can now offer a servo amplifier that will enable machine manufacturers and end customers to improve both safety within the production process and productivity.

The target market for the MELSERVO MR-J4, successor to the MELSERVO J3 series amplifiers, includes manufacturers of packing machines, indexing tables and handling systems.
Mitsubishi Electric has integrated a variety of user-friendly functions in the new series of amplifiers to minimise operations involved in harmonising mechanical and electronic systems. The system makes adjustments itself sily by means of ‘online auto tuning’ and automatic ‘vibration filters’. The customer can utilise these functions during start-up and during ongoing operation, enabling commissioning and parameterisation times to be reduced.

The amplifiers also have a ‘life diagnosis function’ that monitors the actual condition of the components installed, such as capacitors and relays, throughout the life of the product. It notifies the user and operator regarding any degradation in operation, helping to reduce machine downtime.

A modular architecture provides a redundant two-channel STO input (Safe Torque Off) as a standard on all MR-J4 amplifiers. This can be augmented by an additional option module to provide SS1 (Safe Stop) input in line with EN61800-5-2. The system configuration then also supports SIL2 (EN62061) and PLd (EN13849-1). The highest levels of safety, such as support for SS2, SOS, SLS, SBC and SSM, can be achieved when MR-J4-B amplifiers and motion controllers are used in combination, allowing users to reduce costs by being able to ‘tune’ their system configuration to meet only the needed safety requirements for the target application.

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