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General| Category | I/O Systems |
|---|---|
| Product Name | 905U |
| Digital Inputs | 4 |
| Digital Outputs | 4 |
| Analog Inputs | 2 |
| Protocol | Modbus RTU |
| Power Supply | DC |
| Manufacturer | ELPRO |
Overview of the 905U, 105U & 105S I/O modules, their telemetry functions, and applications.
General installation guidelines for the 905U/105S module, including case, terminals, and earthing.
Guidance on antenna installation for reliable long-distance operation, considering obstructions and height.
Details on accepted supply voltages (AC/DC), battery charging, and solar regulator.
Description of digital inputs, digital outputs, analog inputs, analog outputs, pulse inputs, pulse outputs, and serial ports.
How to power up the module, LED indicators, and initial diagnostics.
Advice on system dynamics, radio channel capacity, and path reliability for optimal system performance.
Discussion on security aspects like operational reliability, mal-operation, and malicious operation (hacking).
Overview of the configuration process using PC software for 905U-C and 905U-G modules.
Using default settings for single pairs of modules, reflecting inputs to outputs.
Installation and operation of the configuration software, including I/O mappings and user options.
How 105S modules can be used alone or as I/O expansion for 905U modules via RS485.
General specifications including radio standards, housing, LED indication, temperature, and humidity.
Details on radio transceivers (905U/105U) and serial port specifications.
Detailed specifications for digital inputs, digital outputs, pulse inputs, analog inputs, and analog outputs.
Specifications for network configuration, user configuration, and diagnostics.
Table of indicators, conditions, and meanings for diagnosing module issues.
Procedures for self-testing module functionality, including input/output reflection and radio testing.
Method for testing radio path reliability, determining margin, and identifying potential issues.
Details on product warranty, exclusions, liability limitations, and service claims.
A comprehensive guide illustrating system design and features with a pump station example.
Wiring diagram for 105U-1, 905U-1, and 105S-1 modules.
Wiring diagram for 105U-2, 905U-2, and 105S-2 modules.
Wiring diagram for 105U-3, 905U-3, and 105S-3 modules.
Wiring diagram for 105U-4, 905U-4, and 105S-4 modules.
