Electrical connection Liquistation CSF48
32 Endress+Hauser
6.2 Connecting the sampler
The device does not have a power switch
‣ The customer must provide a fuse with a maximum rating of 10 A at the installation
location. Please observe local installation regulations.
‣ For samplers with a CSA approval, use an HBC fuse with 10 A, 250 V AC.
‣ The circuit breaker must be a switch or a power-circuit breaker and must be labeled as the
circuit breaker for the device.
‣ The protective ground connection must be established before any other connections are
made. A disconnected protective ground can be a source of danger.
‣ The device versions for 24 V shall be powered from an energy source which is separated
from low-voltage cables (110/230V AC) by double or reinforced insulation at the source of
the supply.
6.2.1 Routing the cables
• Route the cables behind the rear panel of the sampler so that they are properly protected.
• Cable glands are available for the cable entries (up to 8, depending on the version) .
• Plan a cable length of approx. 1.7 m (5.6 ft) from the foundation to the terminal connection.
6.2.2 Cable types
• Power supply: e.g. NYY-J; 3-wire; max. 2.5 mm
2
• Analog, signaling and transmission cables: e.g. LiYY 10 x 0.34 mm
2
The terminal connection is located under an additional protective cover in the upper rear
section of the device. For this reason, the rear panel of the device must be removed to
connect the power supply prior to commissioning.
The terminal cross-section must be at least 2.5 mm
2
for devices with 24V power supply.
With 24V power supply, a current of up to 10A can flow. For this reason pay attention to
the voltage drop on the supply line. The voltage at the device terminals must be within the
specified range (see "Supply voltage" section).
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