Signaling relay unit
Signal relay unit (RU) is designed to receive notifications from Control Panel (CP) via the RS-485 wired interface and to issue notifications to the relay outputs.
It is possible to connect the relay unit to the RS-485 ring interface of the Control Panel using isolators Astra-A ILS compatible with control panel and Relay unit of 5.5 versions.
Signal relay unit (RU) is designed to receive notifications from Control Panel (CP) via the RS-485 wired interface and to issue notifications to the relay outputs.
It is possible to connect the relay unit to the RS-485 ring interface of the Control Panel using isolators Astra-A ILS compatible with control panel and Relay unit
of 5.5 versions.
The relay unit is controlled with Control Panels Astra-812 Pro and Astra-8945 Pro, radio extender Astra-WE 433 (WE-433). Sources of notifications for the relay unit are partitions of the Control Panel or detectors registered in the WE-433.
The RU has two independent power supply inputs: U1 and U2, and a Zone input for monitoring the serviceability of power supplies.
| Name | Description |
|---|---|
| Supply voltage | from 10 to 27 V DC |
| RS-485 interface line length | 1000 m |
| Relay quantity | 8 |
| Max. amperage switched by relay | 0.1 A |
| Max. switched voltage relay | 100 V DC |
| Input zone resistance: | |
| - Norm | 3 to 5 kOhm |
| - Alarm | 0 to 3 or more than 5 kOhm |
| Overall dimensions | 121x80x31 mm |
| Operating conditions | |
| Temperature | from -30 to +55 °С |
| Relative air humidity | up to 93% at +40°С (without moisture condensation) |
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