Connecting The Measuring Unit - Endress+Hauser Fieldbus Levelflex M FMP45 Operating Instructions Manual

Levelflex M FMP45 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, Ex ia, IS Plastic M20x1.5
Ex em, Ex nA Metal M20x1.5
Terminals
for wire cross-sections of 0.5...2.5 mm
Cable entry
• Cable gland: M20x1.5 (only cable entry for Ex d)
• Cable entry: G ½ or ½ NPT
• Fieldbus Foundation 7/8" plug
Supply voltage
The following values are the voltages across the terminals directly at the instrument:
Type
standard
Ex ia (FISCO model)
Ex ia (Entity concept)
FOUNDATION Fieldbus
Supply voltage 9 V ... 32 V
Lift-off voltage 9 V
1) There may be additional restrictions for devices with an explosion protection certificate. Refer to the notes in the
appropriate safety instructions (XA).
Current consumption
Nominal current 15 mA
≤ 15 mA
Starting current
Error current 0 mA
FISCO/FNICO conformal compliant
Polarity sensitive no
Type Clamping area
5...10 mm
7...10.5 mm
2
Terminal voltage
minimum
9 V
9 V
9 V
1)
Wiring
maximum
32 V
17, 5 V
24 V
29