Honeywell enCore FC Series - HART Measurement Transmitter (Eex I) Via MFE7 Board (Barrier in Sink Mode)

6 Assembly Instructions
enCore FC
Operating Instructions
Page 69 of 120
6.4.11 HART Measurement Transmitter (EEx i) via MFE7 Board
(barrier in sink mode)
Hazardous Area Safe Area enCore device
MFE7 board
A1+ or A2+
A1− or A2−
SH
Isolated current
repeater barrier
(HART compatible,
sink mode)
HART pressure
transmitter, EEx i
HART temperature
transmitter, EEx i
HART
communicator
+
−
(so urce mode)
Fig. 6-16: HART pressure and temperature transmitter (EEx i) via MFE7 – example
Characteristics MFE7:
• a galvanically isolated input safe circuit for a transmitter with HART
interface
− open-circuit voltage: approx. 21 V
− voltage at 20 mA: approx. 12.6 V
− max. load: 600 Ω
• protocol converter integrated in input:
max. 4 transmitters:
thereof max. 1 transmitter in burst mode
15, 16
15
Up to and including basic system version 03-24, you could use either up to
4 × t
ransmitters in multidrop mode or 1 × transmitters in burst mode.