Parker iqan-mc3 - Page 34

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Voltage inputs
7 I/O functionality
Instruction book, IQAN-MC3
The switches are connected to +VREF and VIN/DIN respectively for 5V signal.
NOTICE
Maximum load for VREF position, see Appendix A, on page 46.
EXAMPLE
Connect the positive and negative terminals of the switch to +VREF and VIN,
respectively.
Connecting a switch to VIN and VREF.
IQAN-MC3
+VREF
VIN