Nobby,
There are two pedal boards from Ketron that are totally different that may do what you are talking about:
1. EFFECTS PEDAL MOD. FS13
This allows you to switch to different variations of arrangements, fill-ins, intros, and endings etc. It does not allow you to change chords though.
2. MIDI PEDALBOARD 13 NOTES MOD. K8
This is a "13-key large keyboard for your left/right foot" that acts as the lower range of keys of your keyboard if you connect it to your Ketron keyboard's MIDI A in.
I own no.1 and it does its jobs nicely with my X1. Yamaha MFC-10 MIDI pedal is even better and it provides far more flexibility and configurability and works flawlessly with PSR9000/9000 Pro using preset templates.
I do not own no. 2 but I own Roland PK-5 dynamic MIDI pedal, which I think is even more flexible. Using the multi-mode of the PK-5, multiple notes can be depressed at the same time. If you use easy finger chord mode (e.g. C means C Major, C and E flat means C Minor) this will be good enough to change chords for your arrangements, freeing your left hand for something else.
I hope this gives you a better picture.
Thanks,
Paul Ip
from Texas