Project Planning Information; Electrical Connection; Cable Selection; Digital Inputs - Honeywell KromSchroder IC 40 Technical Information

Project planning information

6 Project planning information

6 .1 Electrical connection

6 .1 .1 Cable selection

Install supply and signal lines separately.
Cables should be installed well away from high-voltage
lines of other devices.
Use temperature-resistant supply cables (≥ 90°C and
min. 1 – 1.5 mm² or AWG 14 – 18).
Observe EMC Directive for installation of signal lines.
Do not connect power supply and digital inputs to dif-
ferent phases of a three-phase current system.
IC 40 · Edition 07.18

6 .1 .2 Digital inputs

The digital inputs require a current of approx. 5 mA at
24 V DC or approx. 3 mA at 230 V AC. To avoid interfer-
ence, it may be necessary to increase the output cur-
rent by using an additional load resistor on the signal
sensor.
Load resistors may not be fitted inside the IC 40 for rea-
sons relating to heat dissipation.
Example for 24 V DC and 10 mA:
Load resistor = 4.7 kΩ, 0.6 W.
IC 40
-
+
DI 1, DI 2
PLC
I = 10 mA
I = 5 mA
i = 5 mA
24 V OUT
4.7 kΩ
R
L
0.6 W
60