Carel k.Air, User Manual, Page: 20 / 192

20
Hardware installation
k.air +030220981 rel. 1.2 - 01.12.2020
Connection of active probes with 0-10 V output powered externally
See the table at the beginning of the paragraph for the maximum number of probes that can be connected. For the operating
range, see the probe data sheets.
9
8
7
6
5
4
3
2
1
U1 U2 U3 GND U4 U5 U6 GND U7 U8 U9 U10 GND
J1 J2
G
G0 Vbat
+5VREF GND +V DC
J9
Y1 GND ID2 ID1 Y2
GND
J8
J7
12/24 Vac
230 Vac
T ransformer
TRA 12/ TRA 24
DPWQ 402000
OUT
24 Vac
24 Vac
GND
30220980_049_R01
C ontroller terminals P robe terminals D escription
GND GND Reference
U1 OUT Signal
Fig. 3.n Tab. 3.f
Maximum number of digital inputs that can be connected
The controller allows the universal inputs/outputs to be confi gured as voltage-free, non-optically isolated digital inputs. In any
case, the inputs must be connected to a voltage-free contact. The maximum length of the connections is 30 m.
D igital inputs (not opto-isolated) k. A ir mini k. A ir large c.p CO e
voltage-free contacts
Max tot 10
10
Max tot 10
10
Max tot 10
10
fast digital inputs Max 2 Max 6 Max 2
Tab. 3.g
Important: the maximum current allowed by the digital input is 10 mA. Therefore, the external contact must be rated for
at least 10 mA
Connection of ON/OFF inputs
There are no specifi c constraints on the maximum number of inputs that can be connected. For the operating range, see manual
+0300057EN.
30220980_023_R01
C ontroller terminals D escription
U1 Digital input 1
GND
U2
Digital input 2
GND
Tab. 3.h
Fig. 3.o
Maximum number of analogue outputs that can be connected
A nalogue outputs (not opto-isolated) k. A ir mini k. A ir large c.p CO e
0-10 Vdc (class 2) (maximum current 2 mA) max. 5 10 max. 5
Tab. 3.i