Levelflex M FMP40 FOUNDATION Fieldbus Wiring
Endress+Hauser 37
4.2 Connecting the measuring unit
4.2.1 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.
4.2.2 Cable gland
4.2.3 Terminals
For wire cross-sections of 0.5 to 2.5 mm
2
4.2.4 Cable entry
• Cable gland: M20x1.5 (only cable entry for Ex d)
• Cable entry: G½ or ½NPT
• FOUNDATION Fieldbus 7/8" plug
4.2.5 Supply voltage
The following values are the voltages across the terminals directly at the device:
4.2.6 Current consumption
Type Clamping area
Standard, Ex ia, IS Plastic M20x1.5 5 to 10 mm
Ex em, Ex nA Metal M20x1.5 7 to 10.5 mm
Type Terminal voltage
standard 9 V to 32 V
Ex ia (FISCO model) 9 V to 17,5 V
Ex ia (Entity concept) 9 V to 24 V
Supply voltage 9 V to 32 V
1)
1) There may be additional restrictions for devices with an explosion protection certificate. Refer to the notes in the
appropriate safety instructions (XA).
Lift-off voltage 9 V
Nominal current 15 mA
Starting current ≤ 15 mA
Error current 0 mA
FISCO/FNICO conformal compliant
Polarity sensitive no
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