Siemens SINAMICS G120D - Page 61

Commissioning
5.2 Preparing for commissioning
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
61
Position and speed controllers operating with HTL encoder
Figure 5-3 HTL encoder on the motor axis for position and speed controllers
Advantage:
Favorably-priced solution.
Disadvantage:
Depending on the gear ratio, restrictions regarding the accuracy of the
position control.
Position controller operates with SSI encoder, speed controller without an encoder
Figure 5-4 SSI encoder on the load side for the position controller, speed controller without an
encoder
Advantage:
Favorably-priced solution.
Disadvantages:
•
Restrictions regarding the accura
cy and dynamic performance of the
position control
•
Travel to fixed stop is not possible.