Figure 2
RS485 NETWORK: always use the indicated polarity; total length shall not exceed 1000m; electric line shall not spit or use star- connections; avoid proximity of electric power sources; usage of shielded cable. Its wires shall be 0.5 mm2 minimal section. Shield shall not be connected. Belden 8772 cables are reccomended.
Connect a terminal line resistor (120 Ohm, 1/4 W) on the most distant device. Resistor shall connect + and – of its serial connector.
Technical details
Power supply | 110 .. 230V ; 0,40A ; 50/60Hz | ||
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| 60W | ||
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Temperature/Humidity | 0 | .. 40°C 20.. 85 % R.H. | |
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Digital outputs (relays) | 2 relays 8A 250V N.O. | ||
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1 relay 8A 250V double touch | |||
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Serial ports | 1 | ||
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1 | |||
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USB port | 2 standard connection A type ports | ||
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Internal modem (if available) | Socket modem, PSTN V.34/33.6K | ||
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Electrical safeguard normative | EN60950 | ||
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Electromagnetc compatibility normative | EN55022; EN55024; EN61000 | ||
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