Both the CY-14C-T and CY-16R-T are compatible with the TD-17. Be sure to update your TD-17 to version 1.02 which adds the new Pad Type settings and optimizes the trigger response for each pad.
To check the current version, please refer to https://rolandus.zendesk.com/hc/en-us/articles/360061563391-TD-17-Viewing-the-current-program-version
TD-17 SYSTEM PROGRAM
GLOBAL SITE: https://www.roland.com/global/products/td-17/downloads/https://www.roland.com/us/products/td-17/downloads/
US SITE: https://www.roland.com/us/products/td-17/downloads/
CY-14C-T Product Information
GLOBAL SITE: https://www.roland.com/global/products/cy-14c-t/
US SITE: https://www.roland.com/us/products/cy-14c-t/
CY-16R-T Product Information
GLOBAL SITE: https://www.roland.com/global/products/cy-16r-t/
US SITE: https://www.roland.com/us/products/cy-16r-t/