Siemens SINAMICS G120D - Fig. 2-101 4735 - Reference mark search with external zero mark, encoders 1

Function diagrams Encoder evaluation 2-692
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SINAMICS G120D List Manual (LH14), 01/2013
Fig. 2-101 4735 – Reference mark search with external zero mark, encoders 1
- 4735 -
Function diagram
87654321
fp_4735_97_55.vsd
Encoder evaluation
SINAMICS G120D
12.12.2012 V4.6
Reference mark search with equivalent zero mark, encoder 1
DI3_probe
(X8.2)
DI1_probe
(X7.2)
xy
Store
<1>
&
Q
D
<2>
1
&
0
21
23
<3>
Store
1
0
1
1
0
1
<1>
Activate selected function
Selecting the function to be activated
ZM_equiv input
0 ... 23
p0494 [D] (0)
"Fast inputs"
From the
digital
inputs/
outputs
Pr or ZM_equiv inv
p0490.9
Pr or ZM_equiv inv
p0490.10
D memory
element (flip-flop)
Measured value memory
Gn_XIST2
for function no. = 1
Increasing position actual values (r0482) --> The 0/1 edge is evaluated.
Decreasing position actual values (r0482) --> The 1/0 edge is evaluated.
This means that the same reference point is always used when traversing to an equivalent zero
mark.
The measured value memory is read out using a handshaking technique according to [4720], [4730].
Reference mark
position to the
encoder interface
[4704.4]
Position actual value 1 from encoder n
[4704.8]
<3>
<2>
All other bits in the encoder control word must be 0.
No equivalent zero mark (p0494 =
0)
(evaluate the encoder zero mark for
encoder n)
r0482 [n-1]
Enc Gn_XIST1
r0487[n-1].0
Geb Gn_STW
r0487[n-1].4
Geb Gn_STW
r0487[n-1].7
Geb Gn_STW