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.
N
OTICE
Maximum load for VREF position, see Appendix A, on page xxiii.
It is possible to connect system vBAT 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
