Connecting The Measuring Unit - Endress+Hauser Fieldbus Levelflex M FMP43 Operating Instructions Manual

Levelflex M FMP43 with FOUNDATION Fieldbus
Endress+Hauser
4.2

Connecting the measuring unit

Ground connection
It is necessary to make a good ground connection to the ground terminal on the outside of the
housing, in order to achieve EMC security.
Cable gland
Standard, EEx ia, IS Plastic M20x1.5
EEx em, EEx nA Metal M20x1.5
Terminals
for wire cross-sections of 0.5...2.5 mm
Cable entry
Fieldbus FOUNDATION 7/8" plug
Supply voltage
The following values are the voltages across the terminals directly at the instrument:
Type
standard
EEx ia (FISCO model)
EEx ia (Entity concept)
Current consumption
Approx 13 mA for the range of voltages given above.
Overvoltage protection
If the measuring device is used for the level measurement in flammable liquids which requires the
use of an overvoltage protection according to DIN EN 60079-14, standard for testprocedures
DIN IEC 60060-1 (10 kA, Puls 8/20 μs) it has to be ensured that
• the measuring device with integrated overvoltage protection with gas discharge tubes within the
T12-enclosure is used, refer to product overview on → ä 8
or
• this protection is achieved by the use of other appropriate measures (external protection devices
e.g. HAW262Z).
Type Clamping area
5...10 mm
7...10.5 mm
2
Terminal voltage
minimum
9 V
9 V
9 V
Wiring
maximum
32 V
17, 5 V
24 V
29