Page 26 - MetalForming September 2017

Electro-Hydraulic Motion Controller
Fig. 3—The new multi-axis motion controller can be seen in the bottom left of the elec- trical panel, mounted next to one of the 16-in. bore hydraulic cylinders used in the rail- car-wheel press.
calculations required in order to keep the axle centered during the bearing- press operation.
Designing the System
“We achieved significant reductions in the amount of programming steps, so much so that we had to write in the controls reimplementation because the Delta RMC was much easier to program than the previous controller, and a lot of that old code was on the PLC,” says Heinrich. “Complex pro- gramming that would have taken many rungs of ladder logic programming in the PLC was accomplished quickly in the Delta RMC unit. We were able to eliminate hundreds of lines of code from the PLC program by using RMC. Plus, we were able to simplify the wiring of our system and gain access to a lot more information on the status of each motion axis due to Ethernet connectivity between the motion con- troller and the data recorder. The old controller was connected via analog
24 MetalForming/September 2017
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