22 02.A.003
For security reasons the power supply and output cables must be carried to
the inside of the housing through separate cable glands.
Cords (links) attached to screw terminals must be ended with sleeve tips of 0,75 mm
2
.
When connecting the flow meter to the power supply the following rules must be observed:
Connections of electrical devices;
Electrical safety;
Rules on safe use of electrical installations by staff
Electrical protection of the device enables to operate in a variety of environments, and
in consultation with the manufacturer it is possible to perform additional modifications
to use the device in specific environmental conditions of a user. The signal cables of
the sensor and the output cables of the converter should not be conducted alongside
the energy cables or any other ones, which may generate interruptions.
Devices interoperating with the flow meter should be resistant to electromagnetic
disturbances generated in the environment and according to the requirements of
compatibility existing in the place of application.
Feeding the converter with the low-voltage power supply unit (optional) is connected
to the same POWER SUPPLY terminals as the main power supply itself. It is not
possible to connect the main power supply to the POWER SUPPLY terminals of
the flow meter with the low-voltage feeder.
8.1.1. Power cable
The power cable must be adjusted to the cable gland in accordance with p. 11.3.2. with
certified cables of operating voltage 300/500V.
Figure 11. Preparation of the power cable
For safety reason the power cable should be prepared in a way enabling the earthing
cable (yellow-green) to be longer than the remaining cables to the minimum of 20
mm (fig. 11). The end of the earthing cable must be extended with the tip of M5 bolt
loop. The crimp must be tightened on the earthing conductor with the sleeve press
tool of properly adjusted size.
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