KROHNE BM 500 EN - Manual (Page 14)

4
ELECTRICAL CONNECTIONS
14
BM 500
www.krohne.com 12/2013 - 4003176301 - MA BM 500 R02 en
4.1 Safety instructions
4.2 Electrical connection diagrams
Terminals 1 (+) and 2 (-) are used for supplying a DC voltage of 18...36 V. Terminal 2 is connected
to the housing via a protective diode.
The maximum power consumption is 200 mA. This value should be taken into account in
connection with the recommended use of a fuse.
An active, galvanically isolated 4...20 mA current output is provided at terminals 3 and 4. Please
consider the applicable wiring regulations.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Figure 4-1: Electrical connection and LED indication for setpoints for M16 cable gland
1 18...36 VDC
2 4...20 mA
3 LED is flashing at correct measurement
4 Push button > 3 seconds to set point for 100%, 20 mA
5 Push button > 3 seconds to set point for 0%, 4 mA
+ - + -