The Elpro 505U-2E wireless I/O module is an economical solution for the remote monitoring of process signals. The 505U-2E connects to discrete, pulse or analogue signals from process transducers, and transmits these signal values by radio. The 505U-2E is suitable for alarm or metering applications, as well as general plant monitoring.
The 505U-2E has an internal 400MHz radio transmitter which operates on a license-free radio band in Europe. The 505U-2E has an operating range of up to 5km. It is suitable for monitoring in utility industries such as electricity, water and gas; and is also a cost effective solution for short range applications in factories and plants.
Mode of Operation The 505U-2E is compatible with the 105U/869 range of wireless I/O products - 105U units may be used to output the process signals, or act as a wireless interface connected to a PLC, DCS or PC. The 505U-2E transmits the value of its input signals whenever the signal changes, or after a pre-configured update time. Each transmission message includes error-checking to confirm the validity of the message. The 505U-2E can be configured to repeat the transmission several times to ensure that the transmission is received correctly. More than 10 000 505U-2E units may operate together in a single system.
Because of its battery power supply and weatherproof case, the final installed cost of the 505U-2E radio telemetry module is very low, making it a cost effective solution for even simple plant monitoring applications.