Teracom TCW280, Руководство пользователя

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TCW280_R1.2 – February 2019 Page 8
5.3.4. Relays connection
TCW280 has 2 relays. They can be used for switching on or off electrical and electronic devices.
The relay contacts are internally connected directly to the terminal connectors. For both relays
normally open, normally closed and common contacts are available. For loads with higher
switchable current/voltage than specified, an external relay should be used.
When mechanical relays switch inductive loads such as motors, transformers, relays, etc., the
current will arc across the relay contacts each time the contacts open. Over the time, this cause
wears on the relay contacts which shorten their life. When switching an inductive load, it is
recommended that relay contact protection devices are used.
5.3.5. Network connection
The Ethernet port of TCW280 should be connected to 10/100 Base-T Ethernet hub, switch or
router.
For configuration, TCW280 may be connected directly to the Ethernet port on a computer. The
device support
Auto-MDIX
and it is not necessary to use “crossover” cable, standard “straight-
through” can be also used.