Parker IQAN-L Series - Page 20

xx
Connecting sensors and switches
6 Installation
Instruction book, IQAN- Lx
Connecting switches to the inputs
Switches could be connected to the inputs, to create a digital on/off signal. The
switches may be connected to +VREF and DIN respectively for 5Vdc signal. The
current consumption for the input is negligible.
NOTICE
Maximum load for VREF position, see Appendix A, on page xxiii.
It is possible to connect system voltage +BAT to the input through a switch in order to
reserve 5Vdc VREF for sensors and potentiometers.
EXAMPLE
Connect the positive and negative terminals of the switch to +VREF,
position C2:8, and DIN-A, position C2:1, respectively.
Connecting a switch to DIN-A and VREF.
EXAMPLE
Connect the positive and negative terminals of the switch to supply or the
unit’s +BAT, position C2:9 and DIN-A, position C2:1, respectively.
Connecting a switch to DIN-A and +BAT.
DIN-A, pos. C2:1
+VREF, pos. C2:8
1
2
3
10
11
12
+BAT, pos. C2:9
1
2
3
DIN-A, pos. C2:1
10
11
12