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NRG Controller with Modbus RTU over RS485
The NRGC is the NRG controller in the NRG BUS chain.
The NRGC interfaces directly with the main controller of the system through Modbus RTU on an RS485 interface. Each NRGC in the system is identified by a unique Modbus address that can be set either manually via a front selector switch that allows only Modbus addresses 1 to 15 or through dedicated registers for addresses 1 to 247. The default Modbus communication settings can also be modified via dedicated registers.
The NRGC acts as a master of the respective NRG BUS chain when it is requested by the main controller to carry out actions on the specific NRG BUS chain. Otherwise, the NRGC is just a facilitator of the communication between the main controller and each individual RG..N solid state relay in the system.
The NRGC needs to be supplied with 24 VDC. It is equipped with a configurable digital output that is set as an NRGC alarm indication as the default setting. LEDs on the front facade give a visual indication of the status of the NRGC, of any ongoing communication with the main controller (COM) and the RG..Ns on the BUS chain (BUS) and of any alarm condition related specifically to the NRGC.
Specifications are noted at 25°C unless otherwise specified.
Benefits
• Communication interface. The NRG controller bridges the field level devices to the control level to allow exchange of data in real-time with the NRG solid state relays.
• Reduced maintenance costs and downtime. Use of real-time data for prevention of machine stoppages during operation.
• Good quality products and low scrap rates. Real-time monitoring allows timely decisions for better machine and process management.
• Reduced efforts in troubleshooting. A number of faults can be distinguished to facilitate and reduce troubleshooting time.
• Fast installation and set-up. The solid state relays on the BUS are configured by AutoConfiguration for fast set-up and prevention of incorrect settings.
• Compact dimensions. One controller with a product width of 35 mm can handle up to 32 RG..CM..N or 48 RG..D..N NRG solid state relays.
Functions
• Communication interface: Modbus over RS485
• Connects up to 48 RG..D..Ns or 32 RG..CM..Ns
• Selector switch for Modbus addresses 1-15 (Modbus addresses 1-247 through comms)
• Supply voltage 24 VDC +/-20%
Features
| Material | Noryl (UL94 V0), RAL7035 |
| Mounting | DIN rail |
| Dimensions | 2-DIN |
| Touch Protection | IP20, IP00 with door flap on front facade open |
| Weight | 135g |
| Compatibility |
NRGC RGC1A60D…N solid state contactors (RG end-devices) RGS1A60D...N solid state relays (RG end-devices) |
