Siemens SINAMICS S120 Manual De Listas página 2360

Reference mark search
This function is provided once for each of
the maximum 3 encoders.
<8>
"Fast inputs"
p0490.9
<7>
<6>
0
<5>
1
1
<7>
DI 10_probe
<6>
<5>
[2031.7]
[2131.7]
p0490.11
[2191.7]
<7>
<6>
0
<5>
1
1
From the
DI 13_probe
digital
<5>
[2032.7]
inputs/
p0490.14
[2132.7]
outputs
0
<5>
1
1
DI 15_probe
<5>
[2033.7]
[2133.7]
p0490.8
<6>
0
<5>
1
1
<5>
1 2
DO: ENC, SERVO, VECTOR
Encoder evaluation - Reference mark search with external zero mark, encoders 1 ... 3
STW for encoder n
Activate selected function
<8>
Gn_STW [4720]
r0487[n-1].0
r0487[n-1].7 1
<3>
No equivalent zero mark (p0495 = 0)
(evaluate the encoder zero mark for encoder n)
p0490.10
0
1
1
p0490.13
0
1
1
p0490.15
0
1
1
p0490.12
0
1
1
3 4
Position actual value 1
Select the function to be activated
from encoder n
Store
r0483[n-1]
&
D memory
D
element
Zero mark input
Q
(flip-flop)
0...8
p0495[n-1] (0) <8>
0
&
1
2
3
4
5
6
7
8
<1> The measured value memory is read out using a handshaking technique according to [4720], [4730].
<2> Index [n-1] encoder n (n = 1, 2, 3)
Index [0] encoder 1
Index [1] encoder 2
Index [2] encoder 3
<3> All other bits in the encoder control word must be 0.
<4> Increasing position actual values (r0482)
Decreasing position actual values (r0482)
This means that the same reference point is always used when traversing to an zero mark substitute
<5> Measuring probe inputs from CU320-2.
<6> Measuring probe inputs from CU_CX32-2.
<7> Measuring probe inputs from CU_S.
<8> For DO ENCODER only encoder 1 resp. index = 0.
5
fp_4735_55_eng.vsd
22.08.18 V05.02.03
PROFIdrive sampling time
<8>
[4704.8]
<1>
Measured-value memory
<8>
<4>
x y
Store
The 0/1 edge is evaluated.
The 1/0 edge is evaluated.
6 7
Function diagram
SINAMICS S120/S150
Reference mark
position to the
encoder interface
[4704.4]
8
- 4735 -