Siemens SINAMICS S120 - Absolute Value Encoder

Motor components
6.2 Encoder (option)
Synchronous Motors 1FK7
Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1
75
6.2.5 Absolute value encoder
Function:
• Angular measuring system for the commutation
• Speed actual value sensing
• Indirect absolute measuring system for the position control loop
Table 6-7 Technical data, absolute value encoder
Properties Absolute encoders
EnDat (A–2048)
Absolute encoders
EnDat (A–512)
Simple absolute value
encoder (A–32)
Mech. limiting speed 12000 RPM 12000 RPM 12000 RPM
Operating voltage 5 V ± 5 % 5 V ± 5 % 5 V ± 5 %
Power consumption max. 300 mA max. 200 mA max. 300 mA
Resolution, incremental (periods per
revolution)
2048 512 32
Absolute resolution (coded revolutions) 4096 4096 4096
Incremental signals 1 Vpp 1 Vpp 1 Vpp
Serial absolute position interface EnDat EnDat EnDat
Angular error ± 40" ± 80" ± 280"
Note
As a result of the reduced maximum operating temperature of absolute encoders with
respect to incremental encoders, the thermally permissible rated motor torque is reduced
by 10%.