Siemens SINAMICS S120 Commissioning Manual page 421

Resolver encoder type
The following main settings can be made for the "Resolver" encoder type:
● Motor encoder
This option is selected for each encoder inserted first (measuring system 1). When you
add an additional encoder that you want to use as motor encoder, you must activate the
option there. The option is then deactivated in the first added encoder.
● Rotary
This option is preselected for resolvers.
Enter the number of pole pairs
Enter the number of pole pairs that the associated encoder provides.
Gear ratio / measuring gearbox
Gearboxes or measuring gearboxes are relevant only for some motor types, e.g. for 1FW3
torque motors. The gear ratio is the ratio of encoder revolutions (p0432) to the number of
motor or load revolutions (p0433) and is also termed the transmission ratio.
This information is contained in the motor data sheet.
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
A.6 Overview of measuring systems / encoders
Appendix
421