Connecting The Measuring Unit - Endress+Hauser HART Levelflex M FMP41C Brief Operating Instructions

Wiring
3.4

Connecting the measuring unit

Load HART
Minimum load for Hart communication: 250 Ω
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
Plastic M20x1,5; Clamping area 5...10 mm
Terminals
for wire cross-sections of 0.5...2.5 mm
Supply voltage
HART, 2-wire
The following values are the voltages across the terminals directly at the instrument:
Fixed current, adjustable e.g. for solar power operation
(measured value transferred at HART)
Fixed current for HART Multidrop mode
1) Start up current 11 mA
HART residual ripple, 2-wire: U
HART, 4-wire active
Version
DC
AC
HART residual ripple, 4-wire, DC version: U
voltage (10.5...32 V).
16
Communication
HART
≤ 200 mV
ss
Voltage Max. load
10.5...32 V
85...253 V
2
Current consumption
4 mA
20 mA
11 mA
1)
4 mA
600 Ω
600 Ω
= 2 V, voltage incl. ripple within the permitted
ss
Levelflex M FMP41C 4...20 mA HART
Terminal voltage
16 V ... 36 V
7.5 V ... 36 V
10 V ... 36 V
16 V ... 36 V
Endress+Hauser