Electrical connections
42 FEX300, FEX500 OI/FEX300/FEX500-EN
5.2 Connecting the flowmeter sensor
5.2.1 Connecting the signal and magnet coil cables
Important (Notice)
The cable with the part number D173D027U01 can be used for all device designs.
The cable with the part number D173D031U01 can be used for all device designs.
• Flowmeter sensor without explosion protection from size DN15 (models FEP321, FEH321,
FEP521, FEH521).
• Flowmeter sensor for operation in Zone 2 / Div. 2 from size DN15 (models FEP325,
FEH325, FEP525, FEH525).
Connections can only be made with the supply power switched off. The unit must be grounded.
The sensor is connected to the transmitter via the signal/magnet coil cable (part no.
D173D027U01 or D173D031U01). The coils of the flowmeter sensor are supplied by the
transmitter over terminals M1/M2. Connect the cable to the sensor as shown in the figure.
Cable D173D027U01 Cable D173D031U01
G00671-01
1S
E1 E2
2S
3
D2 D1 M2 M1
SE
1S
E1 E2
2S
3
D2 D1 M2 M1
SE
Fig. 37
Terminal designation Connection
1S Shield
E1 Signal line, violet
E2 Signal line, blue
2S Shield
3 Measurement potential, green
D2 Data line, yellow
D1 Data line, orange
M2 Connection for magnet coil
M1 Connection for magnet coil
SE Outer cable shield.
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