This datasheet describes the Carlo Gavazzi NRGC controller, an NRG system component that bridges field devices to control systems via RS485 Modbus RTU.
The Carlo Gavazzi NRGC is a controller for the NRG system, designed to bridge field-level devices to the control level. It facilitates real-time data exchange with NRG solid-state relays (SSRs) using an RS485 interface with Modbus RTU protocol. The device allows for the monitoring and control of up to 48 RG..D..N or 32 RG..CM..N SSRs within a single bus chain. This manual is written in Chinese.
| Communication Interface | RS485 with Modbus RTU |
|---|---|
| Max SSRs per Bus Chain | 48 RG..D..N or 32 RG..CM..N |
| Operating Temperature | -20 to +65 °C |
| Dimensions | 2-DIN |
| Weight | 135 g |
| Default Baud Rate | 115200 bit/s |
A single bus chain can support a maximum of 48 RG..D..N solid-state relays.
The address can be set manually via a hex switch for addresses 1-15, or via a dedicated register for addresses 1-247.
The default function is set as an NRGC alarm relay.