4
ELECTRICAL CONNECTIONS
12
SMARTMAC 200 W
www.krohne.com
09/2017 - 4005599202 - AD Ex SMARTMAC 200 en R02
4.2 Power supply
The device does not require a separate power supply. The necessary supply for the display and
operating unit and connected sensor comes via the current output 4...20 mA (loop powered).
The cable parameters are determined by the parameters of the system to which the loop
powered display and operating unit and sensor are to be connected.
WARNING!
Substitution of components may impair intrinsic safety.
Figure 4-1: Overview terminal connections 4...20 mA input for Ex-approved device.
1
I.S. certified barrier, power supply
2
Current output signal 4...20 mA
3
Terminal connectors SMARTMAC 200 W
4
I.S. certified sensor
INFORMATION!
The device is galvanically isolated from ground and can be placed anywhere within the loop.
