Siemens SINAMICS S120 - Resolvers

Motor components
6.2 Encoder (option)
Synchronous Motors 1FK7
Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1
77
6.2.6 Resolvers
Function:
• Angular measuring system for the commutation
• Speed actual value sensing
• Indirect incremental measuring system for the position control loop
Table 6-10 Technical data, resolvers
Properties Resolver
Mech. limiting speed 15 000 RPM
Excitation voltage 5 V (rms) to 13 V (rms)
Excitation frequency 4 kHz to 10 kHz
Power consumption < 80 mA (rms)
Angular accuracy (bandwidth)
2-pole
multi-pole (> 2)
< 14'
< 4'
Number of poles, resolver
Number of poles, resolver = number of poles,
motor
2
4, 6, 8
Transformation ratio 0.5
8
6LQXVRLGDOWUDFN
8
&RVLQHWUDFN
D DUFWDQ
8
6LQXVRLGDOWUDFN
8
&RVLQHWUDFN
Figure 6-3 Output signals, resolver