Overview
The GE UR 9GH, also cataloged as the UR9GH Multilin CPU Module, operates as a dedicated hardware component for communication processing and relay control execution within GE Multilin Universal Relay platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | UR 9GH |
| Brand | General Electric |
| Product Type | Multilin CPU Module |
| Origin | USA |
| Weight | 0.84 kg |
| Dimensions | 6 x 21 x 17.1 cm (estimated shipping size) |
| Operating Temp | -20 deg C to +70 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Power Consumption | Chassis supply: 24 VDC |
| Processor | 400 MHz ARM |
| RAM | 512 MB DDR3 |
| Flash Memory | 512 MB |
| Communication Interfaces | RS485, 10Base-F Ethernet |
| Communication Protocols | Modbus TCP/IP, DNP |
| Humidity | 5 – 95 % RH non-condensing |
| Tariff Code | 8537101190 |
GE Multilin Firmware and Communication Compatibility
The UR 9GH CPU module provides processing and communication functions for GE Multilin Universal Relay systems. The module integrates a 400 MHz ARM processor with 512 MB DDR3 RAM and 512 MB flash memory for relay application execution, configuration storage, and communication management.
The UR 9GH supports RS485 serial communication and 10Base-F Ethernet connectivity with Modbus TCP/IP and DNP protocol capability. Firmware compatibility defines the supported hardware combinations within the UR relay architecture. When paired with compatible CT/VT and I/O modules, the CPU manages system communication and relay processing functions.
The GE Multilin platform uses firmware flash compatibility control to identify supported hardware combinations. A CPU module installed with incompatible CT/VT hardware versions may generate hardware configuration errors and prevent full system operation.
Frequently Asked Questions
Q: What power supply is required for the GE UR 9GH CPU Module?
A: The UR 9GH CPU Module requires a 24 VDC chassis supply connection within the GE Multilin Universal Relay system.
Q: Which communication interfaces are available on the UR 9GH?
A: The module provides RS485 and 10Base-F Ethernet interfaces with Modbus TCP/IP and DNP communication protocol support.
Q: Is firmware compatibility required when replacing a UR CPU module?
A: Yes. The CPU firmware version must match the installed UR system hardware configuration, including compatible CT/VT and I/O modules.
Field Installation Guidelines
Install the UR 9GH CPU Module only in the designated GE Multilin Universal Relay chassis position. Verify the chassis power supply is removed before module insertion or removal.
Confirm that the installed CT/VT modules, I/O modules, and CPU firmware versions are compatible before system startup. Use proper grounding practices for communication wiring and maintain separation between signal cables and high-voltage conductors.
Check Ethernet and RS485 wiring polarity, shielding, and termination requirements according to the relay system installation documentation. After installation, verify CPU status indicators, communication links, and relay configuration parameters through the supported configuration interface.
