The i700 range has no memory to save the drive parameters and everything is set up by the Lenze controller.  To make the Trio do the same is a little complex and needs you to know which parameters are changed in the drive so that they can be set by CoE SDO writes at startup. 

Trio plan to implement Ethernet over EtherCAT (EoE) in the future, which will aid the setting up of this kind of servo drive.

If there is a speed limit, then it is probably caused by the Trio OUTLIMIT parameter.  Try setting OUTLIMIT to 2^31 so that the speed command (Target Speed) can go the full range of the 32 bit EtherCAT PDO value.