Honeywell enCore FC Series - HART Measurement Transmitter (Eex I) Via MFE7 Board (Multi-Master, Barrier in Source Mode) - Multidrop Mode (from Basic System 03-25)

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,
so urce 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)