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The Elpro 505U-K wireless I/O module is an economical solution for the remote monitoring of process signals. The 505U-K connects to discrete, pulse or analogue signals from process transducers, and transmits these signal values by radio. The 505U-K is suitable for alarm or metering applications, as well as general plant monitoring.

The 505U-K has an internal 869MHz radio transmitter which operates on a license-free radio band in Europe. The 505U-K 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-K 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-K 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-K can be configured to repeat the transmission several times to ensure that the transmission is received correctly. More than 10 000 505U-K units may operate together in a single system.

Because of its battery power supply and weatherproof case, the final installed cost of the 505U-K radio telemetry module is very low, making it a cost effective solution for even simple plant monitoring applications.

• Multiple power supply options including battery-only supply with ultra low power consumption (reverts to 'sleep mode')
• Input only transmitter unit (2 or 4 DI/PI, 1 AI) able to be connected to multi I/O and/or gateway units - up to 3000 units in a system
• Peer-to-peer communications with exception-reporting, reliable self-checking via update time and secure data encryption
• External inputs plus internally calculated values including analog setpoint status, pulse rate and pulse total, power/battery supply voltage, power supply alarm
• Can connect to up/down counter transducers such as shaft-encoders
• Configurable repeat transmissions to five times for message reliability

Indicative Applications

High level alarms Security gate control Emergency shower notification Flow meter monitoring Storage tank monitoring Pipeline cathodic protection Pump stop-start Lighting bank control Power reticulation relay fault notifications Weather station reporting Bearing conditions monitoring

Elpro 505U-K I/O counts

Note: Specifications subject to change.
• *Pulse and digital I/O are same connection

Elpro 505U-K Frequency Options

Note: Specifications subject to change.

General Specifications

Power Supply Specifications

Note: Specifications subject to change.
• *Analog current draw dependent upon transducer current draw and transmission number/hr.

Radio Specifications

Note: Specifications subject to change.
• *As with all distances quoted, these are dependant on local terrain/obstacles