Hello, justa paste de answer from Mg. Still waitingo for arturia´s:
"Hello Alberto,
I don't know what type of CV input jacks the Arturia uses. The EP-2 has a TRS connection with an internal potentiometer. The wiper connects to the tip and the ring and sleeve connect to each leg. If your MIDI controller is expecting a different jack, it may not function correctly. You may be able to adjust the range of the footpedal using the small dial on the side. This attenuates the resistance of the internal pot. If you are still unable to get a good response, you may wish to contact Arturia and see what type of expression pedal needs to be used for the device. Good luck and take care!
Cheers,
Perry"