Sitec STCU DS1, Руководство пользователя

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7/10 R4.A
INSTALLATION AND TESTING
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Place hub at least two meters from power devices (pumps, inverters, etc.).
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Fasten hub using the fastening supports inside the package.
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Make the connections following the directions in the chapter: “Front Panel, Terminal Box and Con-
nection Diagrams”.
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Verify the insulation of the M-Bus cable with respect to the ground or other voltages.
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Verify there are no short-circuits in the wiring.
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Switch on the device and wait until the startup is completed.
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Verify that the “OVL” LED is off at the bottom right of the screen. Otherwise, check the ground wires
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and other voltages, and ensure that the network is free of short-circuits.
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Create the list of devices (see chapter: ‘’Device Search Menu’’).
M-BUS WIRING
For the M-Bus wiring, refer to EN13757-2 (Annex E M-Bus Cable installation) and standards relating to the
wiring of buildings.
To connect the meters to the master via the M-Bus network, we recommend using a twisted cable of at least
2x0.8 mm wires or equivalent (JYStY N*2*0.8 mm).
M-Bus cable must not be placed in the same conduit as the power cables.
We recommend respecting a distance of at least 2m from the inverter and other power devices in order to
avoid possible electrical interference.
With the cable above the total length of the wired segment can be up to 2 km with 250 Unit Loads.
The shield must only be connected to the appropriate terminal of the concentrator base (see connection dia-
gram), but must be opened by the side of the terminal for direct current (DC) and low-frequency signals.