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4.2 Electrical connection
The electrical connection should be carried out by an authorised electrician
in accordance with local regulations.
Warning
Before beginning the electrical connection, make sure that the
power supply has been switched off and that it cannot be
accidentally switched on.
The supply voltage for SI 010 CNV can be 230/115 VAC
50/60 Hz, ± 10 % or 24 VDC (see section
Caution
supply voltage and
If the supply cable to SI 010 CN has no earth conductor, connect a
Note
separate earth connection.
Connect SI 010 CNV to 230/115 VAC, 50/60 Hz or 24 VDC. Never connect
more than one voltage, and check with a voltmeter which voltage is
available. Set the ST jumpers correctly. See section
Warning
Wrong connection may cause highly dangerous situations and
destroy SI 010 CNV and possibly equipment connected to SI 010
CNV.
The voltage supply built into SI 010 CNV fulfils the PELV requirements, and
the PE terminals (protective earth) and GND are connected.
If SI 010 CNV is supplied from an external 24 V voltage supply, the
Note
supply MUST be PELV-approved.
Connect SI 010 CNV to the public supply network via a switch and
according to the local regulations. In order to ensure safety and
Caution
correct function, it is important that the pipe system in which the
sensor is mounted has an efficient earth connection.
Standard procucts from Grundfos Direct Sensors can be supplied via up to
2.9 m cables. See the installation and operating instructions of the sensor.
As far as possible, keep the connecting cables away from frequency
converters and other noisy electronic equipment.
Use twisted-pair cable (minimum 2 x 0.5 mm
and other equipment. Connect inputs and outputs according to the tables in
section
4.2.1 Connection of supply voltage and
sensor).
2
) between SI 010 CNV outputs
4.2.1 Connection of
3.
Configuration.
sensor.
13
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