I hate to even comment, since I misunderstood once, do not have your device and it is late again, but the question I have is still what are you trying to do? i.e. why do you need more than the two channels available. It seems to me only two things (garage doors or whatever) can be controlled with a two relay switch, but I will stand corrected again, if enlightened.
As to the XML situation, this is at the far end of my knowledge, but I believe the XML generated by the binding in the userdata/zwave folder is not the same a generated from the community database and used in the binding. From my copy of the binding code XML there are only two channels.
zen17_0_0.xml (15.6 KB)
As to my other “parameter” post, there are a few missing parameters in the XML from the device manual, but they hardly seem relevant (and that was probably the decision of the person updated the database). It’s hard to say there is a database issue without understanding what you are trying to do?
Hope this is helpful