Electrical Connections; Standard And Zone 2/22 Version - ABB Sensyflow FMT500-IG Inbetriebnahmeanleitung

5

Electrical connections

The Sensyflow FMT500-IG is a thermal gas mass flowmeter in four-wire technology. It features
a 0/4 ... 20 mA HART-enabled analog output as well as two digital inputs and two digital
outputs.
Please pay attention to the following version information as regards connection of the standard
and Zone 2/22 versions.
For connection in accordance with ATEX for Zone 0 / 1 / 21 and FM, comply with drawings and
safety instructions in chapter 'Designs for potentially explosive atmospheres in accordance with
ATEX and FM' on page 50.
WARNING
Opening the rear housing cover and the cover for the supply terminal block while the device is
live can result in an electric shock. This can result in severe injuries or death. Disconnect the
device from the supply.
IMPORTANT (NOTE)
Before connecting the power supply, the signal wiring process must have been completed.
5.1

Standard and Zone 2/22 version

Transmitter with integral mount design
L / + Phase / + terminal
N / - Neutral / - terminal
PE Grounding
Wide-range power supply unit 110 ... 230 V AC / DC ± 10 %
or
Low-voltage power supply unit 24 V AC / DC ± 20 %
Transmitter with remote mount design
L / + Phase / + terminal
N / - Neutral / - terminal
PE Grounding
Wide-range power supply unit 110 ... 230 V AC / DC ± 10 %
or
Low-voltage power supply unit 24 V AC / DC ± 20 %
1:1 cable connection from transmitter terminal block to flowmeter
sensor terminal block, terminals 1 ... 10 (terminal 6 not assigned).
Flowmeter sensor with remote mount design
Flowmeter sensor Terminals 1 ... 10
Cable
Min. cross section
Max. cable length
1:1 cable connection from transmitter terminal block to flowmeter
sensor terminal block, terminals 1 ... 10 (terminal 6 not assigned).
Place one side of the cable shield in the metal cable gland for the
terminal box.
CI/FMT500-IG-X1
Min. 9 wires
Min. 0.5 mm 2 AWG 20
50 m (164 ft.)
(25 m [82 ft.] for Zone 2/22 version
with constant power method)
Sensyflow FMT500-IG
Terminal
cover
Power
supply
Electrical connections
Power supply
PROFIBUS
or analog / HART
module
Transmitter
terminal block
Analog / HART
or PROFIBUS
module
Flowmeter sensor
terminal block
Terminal box
EN - 29
83