Honeywell enCore FC Series - HART Measurement Transmitter (Eex D) Via MFE7 Board (Redundant, Without Barrier) - Burst Mode

6 Assembly Instructions
enCore FC
Operating Instructions
Page 73 of 120
6.4.13 HART Measurement Transmitter (EEx d) via MFE7 Board
(redundant, without barrier) – Burst Mode
Hazardous Area Safe Area enCore device 1
MFE7 board
A1+ or A2+
A1− or A2−
SH
HART transmitter,
EEx d
(burst)
enCore device 2
MFE7 board
A1+ or A2+
A1− or A2−
SH
HART
communicator
+
−
(so urce mode)
(sink mode)
+
−
Fig. 6-18: HART transmitter (EEx d) via MFE7 (redundant) – example
Characteristics MFE7:
• a galvanically isolated input safe circuit for a transmitter with HART
interface for every device; protocol converter integrated in input
− 1
st
device in source mode:
rated voltage: approx. 21 V
max. load: 300 Ω