Niko 550-00001, Руководство по установке

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10. Pulse counter
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Fitting a meter with pulse output
There are three options for fitting a meter with pulse output:
• An add-on device is available from the wholesaler’s for most gas meters supplied by the energy supplier. This
device clips onto the meter housing and generates a pulse whenever a certain amount of gas has been used. In a
lot of cases, this add-on device can also be used on existing meters. Contact the gas meter manufacturer for more
information.
• For a newly constructed dwelling, you can ask the building supervisor to request a gas or water meter with pulse
output from the energy supplier.
• You can ask the installer of the heating or sanitary system to install a separate gas or water meter with pulse
output.
Connecting and mounting the pulse counter
Follow the steps below to mount and connect the pulse counter:
1 Press the module onto the DIN rail until it clicks into place. Preferably position the pulse counter in the top row
inside the electrical cabinet to keep the SELV cables separate from the 230V cables.
2 Connect the pulse outputs to screw terminals 1-3.
3 Connect the mass of the pulse outputs to the common screw terminal COM.
4 Connect the module to the module before it. Slide the sliding contact of this module to the right until it clicks into
the pulse counter. This will ensure that the bus and the power supply voltage are connected.
• Ensure that the installation is disconnected from the mains.
• The cable distance between the module and the pulse output should not exceed 50 m.
• A maximum of three meters can be connected to each module.
• If you establish a connection with the gas meter, make sure that the pulse output is galvanically isolated
from the meter housing. In most cases, an add-on meter interface that generates pulses via an internal
magnetic contact switch (reed contact) can be clipped onto the meter.