Redesign of a dri­ve and con­trol system

Unfor­tu­nate­ly the sales of these Etel-con­troller was mean­while stopped. New dri­ve reg­u­la­tors have to be found, that on the one hand offer a com­pa­ra­ble con­troller per­for­mance and on the oth­er hand full­fil the demands of the present safe­ty stan­dards in dri­ve engi­neer­ing. That can­not be man­aged in a sim­ple way.

Mas­ter­ly approach

M. Eng. Adri­an Majew­s­ki, at that time still study­ing at the Fach­hochschule Aachen, took that chal­lenge as top­ic of his mas­ter the­sis. He analysed the advan­tages and dis­ad­van­tages of the con­troller by a state con­troller, as already used at Etel, and the usu­al cas­cade con­troller with speed ser­vo con­trol of oth­er sup­pli­ers. The excel­lent pre­sen­ta­tion of the­o­ret­i­cal rela­tions of the con­trolled sys­tem and the dif­fer­ent con­trol prin­ci­ples as well as the sim­u­la­tion in Lab­VIEW and the suc­cess­ful analy­sis of suit­abil­i­ty of some reg­u­la­tors of dif­fer­ent sup­pli­ers bestowed the top grade 1.0 for his the­sis. We would like to say thank you to Prof. Dr.-Ing. Ulrich Hoff­mann for his excel­lent assis­tance. M. Eng. Adri­an Majew­s­ki is mean­while one of our staff.

Our solu­tion

We decid­ed in favor of the ser­vo reg­u­la­tor HCS01.1E of Bosch-Rexroth. This reg­u­la­tor dis­pos­es of a quick posi­tion and speed con­trol as well as of the inte­grat­ed safe­ty tech­nol­o­gy „Safe Motion“.

The cir­cuit dia­grams were drawn and the switch­board cab­i­net was built by our elec­tri­cal con­struc­tion team as well. After the com­pa­ny Jouh­sen Bünd­gens Maschi­nen­bau GmbH had set up the machine mecani­cal­ly we mount­ed the cab­i­net and con­nect­ed all elec­tri­cal and elec­tron­ic com­po­nents. The start­up of the dri­ve and con­trol tech­nol­o­gy fol­lowed. Togeth­er with our cus­tomer we sub­se­quent­ly val­i­dat­ed the process and the length tol­er­ances of the prod­ucts successfully.