6 Assembly Instructions
6.4.14 HART Measurement Transmitter (EEx i) via MFE7 Board
(redundant, barrier in source mode) – Burst Mode
Hazardous Area Safe Area enCore device 1
MFE7 board
A1+ or A2+
A1− or A2−
SH
HART transmitter,
EEx i
(burst)
enCore device 2
MFE7 board
A1+ or A2+
A1− or A2−
SH
0V 24V
Isolated current
repeater barrier
(HART compatible,
so urce mode)
HART
communicator
+
−
+
−
(sink mode)
(sink mode)
Fig. 6-19: HART transmitter (EEx i) via MFE7 (redundant) – example
Characteristics MFE7:
• a galvanically isolated input safe circuit for a transmitter with HART
interface for every device
• both devices in sink mode:
load: approx. 50 Ω
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