Compact Intelligent Electronic Device for Power Stations
Project Introduction RTUs are traditionally used to manage analog relays, meters, and transducers in power stations. However, RTU systems have burdensome space and wiring requirements, making them difficult to install and maintain. Typically, a 19-inch rack is required, with multiple wires connecting directly to sensor points. An alternative, more compact solution for power companies is to use Intelligent Electronic Devices (IEDs).
System Requirements
Although dedicated devices are usually used to control and collect
system information, the client wanted to develop a custom solution
using an open-platform programmable embedded controller.
System Description The customer connected a compact embedded computer to ioLogik E2210 units to form each IED system. The UC-7110 was used for smaller systems, while the UC-7420 was used for larger systems. Cabling was greatly reduced since the ioLogik E2210 transmitted all I/O signals over Ethernet. The ioLogik E2210's Active Ethernet I/O operation allowed digital input points to be monitored without continuous polling, reducing the load on the embedded computer's CPU. This also minimized the amount of protocol conversion that was required. Even though a Java library was not available for the ioLogik E2210, software tools were readily available to convert the ioLogik's DLL library into a form that was easily accessible to Java programs.
Project Implementation
Why Moxa?
Conclusion
ioLogik E2210
Active Ethernet I/O server with 12 digital
inputs, 8 digital outputs
UC-7420
RISC-based embedded computer with 8 serial ports, dual LANs, PCMCIA, CompactFlash, USB and LCM
