Device-Internal Potential
Use
Internal potential is provided by the PICO controller power supply. This version is used primarily when potential-free
switches and keys are used to activate the pulse sequences.
Action required for device-internal potential
[refer to “Circuit Diagram (Device-Internal Potential)” on page 48]
To internally connect the potential, the following electrical points must be connected in the 25-pin D-subconnectors
for the respective channels:
DGND and GND_IO points (meaning connecting PIN 1 and 2) as well as
24 V and 24 V_IO points (meaning connecting PIN 3 and 4).
This eliminates galvanic isolation of the individual switch stages.
The 24 V potential is applied to make contacts (IN1 to IN10) and break contacts (IN_STOP) and, after actuation of
these switches, triggers the respective activations (start a pulse sequence or emergency off).
With this application, the output signals can be used, for example, as optical or acoustic indications to the operator.
The maximum load capacity of the outputs must be complied with (refer to “Specifications” on page 6).
External Potential
Use
Separate potential is used primarily when the controlling device has its own power supply (PLC, control electronics,
etc.) and the inputs IN1 to IN10 as well as IN_STOP are triggered directly by binary signals. An electrical connection
should be established between the external voltage supply and the input and output stages of the PICO controller
for this purpose.
Action required for external potential
[refer to “Circuit Diagram (External Potential)” on page 49]
24 V_IO and GND_IO should be connected to the respective terminals of the external voltage supply.
The input signals IN1 to IN10 should still be triggered directly.
With this application, the output signals OUT_READY and OUT_LINE_END serve primarily as acknowledgement for
the control program.
PICO Controller 2+2-XCH-V2
16
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