6
Assembly Instructions
enCore FC
Operating Instructions
Page 79 of 120
6.4.16 HART Measurement Transmitter (EEx i) via MFE7 Board
(Multi-Master, barrier in source mode) – Multidrop Mode
(
from Basic System 03-25
)
enCore device 1
MFE7 board
A1+ or A2+
A1− or A2−
SH
HART pressure
transmitter, EEx i
(Multidrop)
enCore device 2
MFE7 board
A1+ or A2+
A1− or A2−
SH
0V 24V
Isolated current
repeater barrier
(HART compatible,
source mode)
Hazardous Area
Safe Area
+
−
+
−
(sink mode;
primary master)
(sink mode;
secondary master)
HART temperature
transmitter, EEx i
(Multidrop)
Abb. 6-21: HART pressure and temperature transmitter (EEx i)
via MFE7 (primary and sekundary master)
•
a galvanically isolated input safe circuit for a transmitter with HART
interface for every device
•
both devices in sink mode:
load:
approx. 50 Ω
•
max. cable length:
250 m (total)