Siemens SINAMICS S120 - Page 367

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8.9 K46, Sensor Module Cabinet-Mounted SMC10
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
367
Table 8- 6 SMC10 specification
Value
Transmission ratio of the resolver
ü = 0.5
Excitation voltage on the SMC10 with ü = 0.5 (cannot be parameterized)
4.1 V
rms
Amplitude monitoring threshold (secondary tracks) of the SMC10
1 V
rms
The maximum encoder cable length is 427 ft (130 m).
The excitation frequency is synchronized to the current-controller clock cycle and lies in the
range between 5 kHz and 10 kHz.
The ratio between ohmic resistance R and inductance L determines whether the resolver
can be evaluated with the SMC10 (see diagram below).
Figure 8-11 Connectable impedances with an excitation frequency f = 5000 Hz