Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 66

05.08
05.01
S
Fig. 3-2
If other encoder signals are used or in the case of TTL encoders, encoder sig-
nal monitoring can be triggered. In particular, the lower signal level for reference
signals R+ and R– must be carefully observed.
Resolver
Key data for resolver as motor encoder:
S
S
S
S
S
S
S
Note
The named key data represent starting values for the selection of the resolver
but not a complete specification of the resolver interface. In specific cases, the
user must check whether the chosen resolver in the complete system meets
the requirements.
© Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
3 Motor Selection, Position/Speed Sensing
For zero pulse/reference signal R+ and R–
Signal
5 V
3.5 V
0.2...0.5 V
1.5 V
0 V
Signal characteristics for zero pulse/reference signal R+ and R–
Pin assignment: in accordance with Chapter 4.2.2, Table 4-13
Number of pole pairs: 1 or equal to the pole–pair count of the motor
Resolver excitation:
the control unit produces the voltage with 4.3 V
Nominal input voltage of the controller: sin/cos 2.0 V
Transmission coefficient of the resolver: approx. 0.46 at 9.6 kHz (often de-
scribed with 1:2 transformation ratio in the datasheets)
The resolver excitation is controlled within the control range to provide the
input voltage of 2.0 V .
RMS
Maximum excitation current: 28 mA
nitude of 154 Ω of the complex input impedance of the resolver)
3.2 Motor encoder
0.2...0.5 V
at 9.6 kHz
RMS
RMS
(corresponds to the minimum mag-
RMS
3
t
3-65