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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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en:hw:03-unipi11:description-of-io:03-description-of-ro [2020/12/16 12:54] jan_kozak |
en:hw:03-unipi11:description-of-io:03-description-of-ro [2022/07/13 08:17] (current) lpolcerova [Relay outputs] |
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| /* Úvodní popis RO na Unipi 1.1 / Lite */ | /* Úvodní popis RO na Unipi 1.1 / Lite */ | ||
| + | <WRAP group> | ||
| + | <WRAP half column 81%> | ||
| Relay outputs are terminated on terminals labelled by a switch schematic sign and serve for switching two-state devices with alternating or current voltage. The **COM** terminal is common, serving as input for switching voltage. **NO** and **NC** terminals are used as the switching voltage output. | Relay outputs are terminated on terminals labelled by a switch schematic sign and serve for switching two-state devices with alternating or current voltage. The **COM** terminal is common, serving as input for switching voltage. **NO** and **NC** terminals are used as the switching voltage output. | ||
| - | * NO - in the default state (no voltage), contacts are disengaged | + | * **NO** - in the default state (no voltage), contacts are **open** |
| - | * NC - in the default state (no voltage), contacts are engaged | + | * **NC** - in the default state (no voltage), contacts are **closed** |
| + | </WRAP> | ||
| + | <WRAP half column 15%> | ||
| + | ;;# | ||
| + | <html><span class="dev-tag dev-unipi11">Unipi 1.1</span></html> | ||
| + | ;;# | ||
| + | </WRAP> | ||
| + | </WRAP> | ||
| - | Switching of each relay is indicated by LED with the corresponding labelling. Overload and short circuit protection are provided by an external circuit breaker, ideally one for each output or group. Nominal current and the circuit breaker's type is to be selected according to the load and its characteristic considering the maximum current on the output or output group. | + | The state (On/Off) of each relay is indicated by a LED with a corresponding label. Overload and overvoltage protection should be provided externally by a circuit breaker (ideally one for each output). Nominal current and circuit breaker type should be selected according to the load and its characteristics concerning the maximum current on the output. |
| - | <WRAP center round info 95%> | + | <WRAP center round important 95%> |
| - | **Note:** \\ | + | **Warning:** \\ |
| - | If an induction load is connected (eg. electric motor, relay coil, contactor or power cables in large installations), we recommend protecting relay outputs with a suitable external element (such as varistor, RC circuit or a suitable diode). | + | If an inductive load is connected (e.g., electric motors, relay coils, contactors, or even the cables in extensive electric installations), it is necessary to protect the relay outputs with a corresponding external element (e.g., varistor, RC circuit or a suitable diode). |
| - | If a capacitive load is connected (eg. power supply for LED lighting), we recommend protecting relay contacts against inrush current by connecting a suitable thermistor to the relay's output | + | If a capacitive load is connected (e.g., power sources of LED lights), it is necessary to protect the relay contacts against inrush current by connecting a corresponding thermistor to the relay's output. |
| </WRAP> | </WRAP> | ||
