Siemens SIMATIC ET 200SP Informacion De Producto página 13
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- Manual de sistema (380 páginas) ,
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For deactivated sensor supplies or sensor supplies with deactivated short-circuit test, enter the value of 0 in the formula for
Tsx.
T1 = Input delay for the considered channel
T2 = Short-circuit test time for the considered channel
x = activated sensor supply
T2x = Time for the short-circuit test
T3x = Startup time of sensors after the short-circuit test
n = Number of sensor supplies with activated short-circuit test
Examples
Below you will find an example for the calculation of the maximum response time with external short-circuits of the F-DI
8x24VDC HF with a maximum cycle time T
Chan
T1
Short-circuit
nel
[ms]
test
0
3.2
Enable
1
3.2
Enable
2
3.2
Enable
3
3.2
Enable
4
3.2
Enable
5
3.2
Enable
6
3.2
Enable
7
3.2
Enable
Sample calculation: Sum term Ts = (4.2 ms + 4.2 ms) < 11.5 ms → Tsx = T
Below you will find an example for the calculation of the maximum response time with external short-circuits of the F-DI
8x24VDC HF with a maximum cycle time T
Chan
T1
Short-circuit
nel
[ms]
test
0
0.4
Enable
1
0.8
Enable
2
1.6
Enable
3
3.2
Enable
4
0.4
Disable
5
0.8
Enable
6
1.6
Enable
7
3.2
Enable
*) With short-circuit test deactivated, external short-circuits are not detected.
Sample calculation: Sum term Ts = (4.2 ms +10 ms) >= 11.5 ms → Tsx = MAX(4.2 ms, 11.5 ms) + 10 ms
Product Information for the Documentation of ET 200SP Fail-safe Modules
A5E32586870-AJ, 06/2020
of 11.5 ms with the default parameter assignment.
cycle
T2
T3
T
T2 + T3 <
cycle
[ms]
[ms]
[ms]
T
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
4.2
4.2
11.5
YES
of 11.5 ms depending on the parameter assignment.
cycle
T2
T3
T
T2 + T3 <
cycle
[ms]
[ms]
[ms]
T
0.5
0.5
11.5
YES
4.2
10
11.5
NO
20
4.2
11.5
NO
100
100
11.5
NO
-
-
11.5
-
100
4.2
11.5
NO
500
500
11.5
NO
200
2000
11.5
NO
0
Ts [ms]
MAX(T
[ms]
cycle
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
cycle
Ts [ms]
MAX(T
[ms]
cycle
11.5
11.5
21.5
11.5
24.2
20
200
100
0
11.5
104.2
100
1000
500
4000
2000
, T2)
Max. response time
cycle
with external short-
circuits [ms]
210.2
210.2
210.2
210.2
210.2
210.2
210.2
210.2
, T2)
Max. response time
cycle
with external short-
circuits [ms]
5465.3
5465.7
5475.0
5556.6
- *)
5554.2
5955.0
7456.6
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