Carel k.Air, User Manual, Page: 21 / 192

21
Hardware installation k.air +030220981 rel. 1.2 - 01.12.2020
Connection of non-optically isolated analogue outputs
There are no specifi c constraints on the maximum number of outputs that can be connected. For the specifi cations of the
output signals, see 0300057EN.
30220980_024_R01
Vout
Vout
Vout
C ontroller terminals D escription
U1 Analogue output 1
GND
U2
Analogue output 2
GND
U3
Analogue output 3
GND
Tab. 3.j
Fig. 3.p
Notes:
• the analogue outputs cannot be connected in parallel;
• the max output current is 10 mA.
Probe and terminal power supply
C ontroller terminals D escription
+Vcc k.Air mini: 12 Vdc ± 8%; maximum current 50 mA, protected against short circuits
k.Air large: 24 Vdc ± 10%; maximum current 150 mA, protected against short circuits
Vterm
k.Air mini: 24-36 Vdc ± 5% depending on the power supply voltage; max current available: 100 mA (pGDE, th-Tune),
protected against short circuits. Max connection cable length: 10 m.
k.Air large: 24 Vdc ± 10% - To be used to power an external terminal as an alternative to the one connected to J10,
Pmax = 1.5 W. Max connection cable length: 30 m; if the length exceeds 10 m, use a shielded cable with the shield
connected to earth.
Tab. 3.k
3.6.2 D igital inputs
The controller features digital inputs for monitoring safety devices, alarms, device states and remote enabling signals. See ma-
nual +0300057EN. Maximum connection cable length: k.Air mini 10 m, k.Air large 30 m.
Important:
• the k.Air controller does not provide any protection, limitation or functional safety for the controlled devices.
• separate as much as possible the probe and digital input cables from cables to inductive loads and power cables, so as to
avoid possible electromagnetic disturbance. Never run power cables (including the electrical panel cables) and signal cables
in the same conduits;
• the external contact for digital inputs must be rated to at least 5 mA.
Maximum number of digital inputs that can be connected
Ingressi digitali k. A ir mini k. A ir large c.p CO e
voltage-free contacts (not opto-isolated) 2
max tot 18
0
24 Vac or 28-36 Vdc optically-isolated inputs 0 14 0
24 Vac or 230 Vac (50 Hz) optically-isolated inputs 0 4 0
Tab. 3.l
Characteristics of digital inputs ID...IDH...
Minimum digital input pulse detection time ormally open (open-closed-open): 200 ms;
Normally closed (closed-open-closed): 400 ms
Input power supply k.Air mini - Internal; k.Air large -External
IDH...: 230 Vac (+10/-15%) 50/60 Hz, current draw 5 mA
ID...: 24 Vac (+10/-15%) 50/60 Hz or 28-36 Vdc (+10/-20%), current draw 5 mA
Maximum connection cable length k.Air mini 10 m; k.Air large 30 m
Measurement circuit classifi cation (IEC EN 61010-1) Category I: 24 Vac/Vdc (J5, J7, J20); Category III: 230 Vac (J8, J19)
Tab. 3.m