Aplisens SGE-25.Modbus Manuel de l'utilisateur - Page 10

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EN.IO.SGE.25.MODBUS

ELECTRICAL CONNECTION

7.1. Connection, signal output

All connection and assembly activities must be performed with the power supply

disconnected and other external voltages, if used.

Incorrect connection of the probe may endanger safety.

Risk of electric shock and / or ignition in hazardous areas.

The electrical connection should be made according to Table. 2. It is recommended to install

the PP-Modbus connection box manufactured by Aplisens S.A. to connect the probe cable with the rest

of the transmission line. The PP-Modbus junction box is non-hermetic (pressure inside is equal to

atmospheric pressure) due to the use of an air filter, which is required for the probe to operate correctly.

Do not allow the capillary outlet to become contaminated or any liquid to enter the capillary.

Table 2. Probe connection.

7.2. Power supply

7.2.1. Power supply voltage

Supply cables may be live.

There is a risk of electric shock and/or explosion.

Installation in potentially explosive atmospheres must comply with local standards

and regulations.

Table 3. Permissible power supply voltage for probes.

Mode

MODBUS mode - standard

version*

MODBUS mode Exi version

Configuration mode – standard

version

*- power consumption in Modbus mode <3,6 mA.

7.2.2. Shielding, equipotential bonding

A cable shield (green cable) is led out of the probe power supply and measurement cable.

Connect the shield on one side at the probe supply point.

Signal output

Type of connector

SHIELD

- (GND)

RS-485 A +

RS-485 B -

Output signal

MODBUS RTU

4...20 mA

Wire colour

Green

Red

Black

Blue

Yellow

MIN. Power supply

voltage

4 V DC

5 V DC

MAX Power supply

voltage

28 V DC

10 V DC

28 V DC

Revision 01.A.001/2021.09