... and realize, that after you have followed Antoine's instructions, that everything will be vice versa, because of the MIDI Control Center-Bug.
As Sean has explained very accurate:
"If Knob Mode is set to Relative, the knobs send values 65-67 when turned clockwise, and values 63-61 when turned counter-clockwise. (the value depends on how fast the know is turned)"
So you need to put them to "Absolute", as Antoine has correctly said. But - as mentioned - if you do that in the Midi-Center, it transmits the value "Relative" to your keyboard.
I assume, that you only have this setting, because you've already used the Midi-Center.
So solve it as follows:
1. Turn on your keyboard
2. Press the "setup"-Button (under the display), so that it's lit (active).
3. Press the "global" button (Button Nr. 6), so that it's lit.
Now on the display you should see something like
Param: Fader Mod
Value: DrawBar
4. Turn the "Value"-Encoder, so that the value changes to normal.
5. Press the "Value"-Encoder
6. Turn the "Param"-Encoder until it says :
Param: KnobMode
Value: Relative
7. Turn the "Value"-Encoder, so that the value changes to absolute
8. Press the "Value"-Encoder
9. Press the "Store"-Button (Button Nr. 9)
10. Push the "Value"-Encoder
Now the keyboard will ask you, if you are sure, that you want to store the changes.
11. Push the "Value"-Encoder once again to store your changes. The "Setup"-Button-light will turn off and you're done.
Now the faders work as faders again, and the Knobs send the usual Midi Values again.
Cheersx from the hhsoullover