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When a main drive is to be retrofitted on a mechanical press, to start, the drive including the press mechanical system is analyzed. Important data for the new motor is documented and calculated from the mechanical configuration of the press drive. This data includes e.g. the number of strokes per minutes, required acceleration time, required braking time, load torque calculation, speed dip during the actual pressing operation, relationships in the field weakening range, thermal motor check, etc.

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With the normal aging process the question also arises whether your presses are still compliant with the high requirements of current safety standards. Maybe having to regularly replace safety-relevant contactors is now more than tedious for you? Presses count among the most dangerous production machines and must therefore fulfill the highest safety standards. Extremely fast response times of the safety controller and a defined and safe sequence of the press safety functions are absolutely crucial. In addition to the already known SIMATIC S7 F, there is now also a certified software library that makes it significantly simpler for users to configure and implement press safety functions. And the special feature: The press safety functions can now run on the same CPU as the standard automation and are certified according to EN954-1 Cat. 4 and EN61508 SIL3.

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When selecting and dimensioning the drive converter, special requirements and specifications can be taken into account. These can include low harmonics that are fed back into the line supply, energy saving, regenerative feedback into the line supply, single or four-quadrant operation, special requirements when connected to weak line supplies, kinetic energy buffering, etc.
Selecting and dimensioning the drive also includes drawing-up the complete circuit diagram of the press drive, terminal diagrams, wiring lists, part lists and the mechanical design of the electrical cabinets.

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It goes without saying that also all of the options - such as operator interface, bus connection, analog and digital interfaces, filters and EMC measures - are harmonized and coordinated with the machinery construction OEM.