Siemens SPS starter kit 6ED1057-3BA00-0AA8 12 Vdc, 24 Vdc 6ED1057-3BA00-0AA8 Ficha De Dados
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6ED1057-3BA00-0AA8
LOGO! installation and wiring
2.3 Wiring LOGO!
LOGO!
Manual, 06/2014, A5E33039675
Manual, 06/2014, A5E33039675
41
Take into account the quiescent current of any two-wire proximity switches that you use. The
level of the quiescent current of some two-wire proximity switches is high enough to trigger a
logical "1" signal at the LOGO! input. You should therefore compare the quiescent current of
the proximity switches with the technical data of inputs (Page 291).
Remedy
To suppress this response, use an X1/X2-type capacitor rated at 100 nF and 275 VAC. In a
Remedy
To suppress this response, use an X1/X2-type capacitor rated at 100 nF and 275 VAC. In a
destructive situation, this type of capacitor safely disconnects. You must choose the voltage
level for which the capacitor is rated such that it is not destroyed in the case of overvoltage!
At 230 VAC, the voltage between N and an input I(n) must not be greater than 40 V to
At 230 VAC, the voltage between N and an input I(n) must not be greater than 40 V to
guarantee a "0" signal. You can connect approximately ten glow lamps to the capacitor.
Restrictions
Signal status transitions 0 → 1/1 → 0
After a 0 to 1 or 1 to 0 transition, the signal must remain constant at the input at least for the
After a 0 to 1 or 1 to 0 transition, the signal must remain constant at the input at least for the
duration of one program cycle, so that LOGO! can detect the new signal status.
The size of the circuit program determines the program execution time. The appendix
The size of the circuit program determines the program execution time. The appendix
"Determining the cycle time (Page 319)" contains a benchmark test routine that you can use
to determine the current scan cycle time.
Special features of LOGO! 12/24RCE/RCEo and LOGO! 24CE/24CEo
Fast digital inputs: I3, I4, I5 and I6
These modules include fast digital inputs (up/down counters, threshold triggers). The
These modules include fast digital inputs (up/down counters, threshold triggers). The
restrictions mentioned earlier do not apply to these fast digital inputs.
Note
Expansion modules do not have fast digital inputs.
Expansion modules do not have fast digital inputs.
Analog inputs: I1 and I2, I7 and I8
You can use the inputs I1, I2, I7 and I8 of LOGO! versions 12/24RCE/RCEo and
You can use the inputs I1, I2, I7 and I8 of LOGO! versions 12/24RCE/RCEo and
24CE/24CEo as either digital inputs or analog inputs. The LOGO! circuit program defines the
input mode (digital or analog).