Electrical connection
Flowmeter Proline 10 Modbus RS485
12
Hauser
5
Electrical connection
5.1
Connection conditions
5.1.1
Notes on the electrical connection
L
WARNING
Components carry voltage!
Incorrect work performed on the electrical connections can result in an electric shock.
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Have electrical connection work carried out by appropriately trained specialists only.
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Comply with applicable federal/national installation codes and regulations.
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Comply with national and local workplace safety regulations.
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Establish the connections in the correct order: always make sure to first connect the
protective earth (PE) to the inner ground terminal.
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When using in hazardous areas, observe the "Safety Instructions" document.
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Ground the device carefully and provide potential equalization.
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Connect protective earthing to all outer ground terminals.
5.1.2
Additional protective measures
The following protective measures are required:
• Set up a disconnecting device (switch or power-circuit breaker) to easily disconnect the
device from the supply voltage.
• In addition to the device fuse, include an overcurrent protection unit, with max. 10 A, in the
facility installation.
• Plastic sealing plugs act as safeguards during transportation and must be replaced by
suitable, individually approved installation material.
• Connection examples:
5.1.3
Connecting the cable shield
To avoid power (mains) frequency equalizing currents over the cable shield, the potential
equalization of the facility must be ensured. If potential equalization (equipotential
bonding) of the facility is not possible, only connect the cable shield to the facility on one
side. Shielding against electromagnetic interference is then only partially ensured.
1. Keep stripped and twisted cable shields to the inner ground terminal as short as
possible.
2. Shield cables fully.
3. Connect the cable shield to the potential equalization of the facility on both sides.
5.2
Requirements for connecting cable
5.2.1
Electrical safety
As per applicable national regulations.
