Encoder Evaluation - Siemens SINAMICS G120 List Manual
Cu250s-2 control units
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Also See for SINAMICS G120:
- List manual (924 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Encoders
Control Unit
Enc_config eff
Enc_typ sel
p0404 [E]
0 ... 10100
Temperature sensor
p0400 [E] (0)
CU detection LED
0 ... 1
p0124 [P] (0)
SM properties
r0458
Encoder n
<1>
For rotary encoders = pulse number setting.
For resolvers = pole pair number setting.
<2>
Assignment of the indices: Index [n-1] --> Encoder n
Index [0] --> Encoder 1
Index [1] --> Encoder 2
<3>
Generating the two's complement.
<4>
Gn_XIST1 is a free-running position value.
The external control must process the overflows.
<5>
The contents of r0483/r2723 are determined by the encoder
status word/control word. Refer to [4720] and [4730].
1
2
Encoder evaluation
Position and temperature sensing, encoders 1 ... 2
<1>
Enc grid div
0 ... 250000000 [nm]
p0407 [E]
Rot enc pulse No.
Sq-wave enc A/B
0 ... 16777215
p0405 [E]
p0408 [E]
Enc fine Gx_XIST1
2 ... 18
1
2
1
p0418 [E] (11)
A
inkr
n
2
B
n
x2
Raw position
n
2
signals
Multiplication
by hardware
A
1 signal period
sin/cos
B
Mot/load motor rev
1 signal period
Enc fine Gx_XIST2
2 ... 18
Mot/load load rev
p0419 [E] (9)
-1048576 ... 1048576
Cyclic absolute
position value
n
x2
(only for absolute value
encoders, e.g. SSI)
Bits
Geb Gn_STW
[4720.4]
r0487[n-1]
Measuring probe position
<2>
3
4
Configuration, absolute value encoder
Enc abs multiturn
Enc abs meas step
0 ... 4294967295
0 ... 4294967295 [nm]
p0421 [E]
p0422 [E]
2
No. of signal
periods
A
up
31
n-1
n
III
dn
Fine resolution
B
32 Bit
Multiplication
by hardware
Free-running
<3>
position
2
counter
1 ... 1048576
p2504 [D]
For SSI encoders: Absolute position information
Sequence control
p2505 [D]
Reference mark position
[4735.8]
Absolute value
Error code
Encoder
error
processing
Measuring probe position
Function selection
14-15
Enc Gn_ZSW
[4730.5]
r0481
[n-1]
5
6
fp_4704_97_03.vsd
05.09.2017
Enc abs singleturn
Enc rot dist ZM
0 ... 1073741823
0 ... 16777215
p0423 [E]
p0425 [E]
Raw position signals
(only from encoder 1)
0
Invert position
actual value
Dir of rot
p0410.01
p1821
32
0
-1
0
-1
-1
1
1
0
&
Dir of rot
p1821
0
-1
1
To the thermal monitoring, motor
Motor temperature
Encoder status bits
Bits
0-13
to Gn_ZSW
F31100...A32999
encoder faults/alarms
p0979[0...25]
Encoder format acc. to
PROFIdrive
7
Function diagram
G120 CU250S-2
V4.7.9
To speed sensing
[4715.1]
Diag Gn_XIST1
r0479
[n-1]
<2> <4>
Enc Gn_XIST1
r0482
[n-1]
[4010.1]
[4735.6]
<2> <5>
Enc Gn_XIST2
r0483
[n-1]
[4010.1]
[8016.1]
[4730.1]
8
- 4704 -
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