The RMC150E offers electronic platen leveling. This means the ability to control the total force of multiple independent rams while maintaining equal positions of all the rams, regardless of the load distribution. Many presses provide this synchronization via mechanically linking the rams together with very heavy guides and platens such that the rams cannot physically become skewed. Electronic synchronization of the rams reduces the need for such heavy construction.
Attached is a document explaining the control methodology, along with instructions for how to set up the synchronized position-force. The attached RMCTools project is completer and can be used to get you started. Synchronized position-force is a bit complicated, but works very well.
Important: In order to work successfully, the position control of each axis must be extremely good. This means the valves should be mounted on the cylinders, have linear, zero-lapped spools, and have high frequency response and minimal hysteresis. The position feedback must be mounted inside each cylinder. Delta has found that not following these guidelines makes the application quite difficult, if not impossible.
Delta has a video of a 2-cylinder press performing synchronized position-force control: http://youtu.be/9iSmPHpNq4w