Unipi Extension xS51

Product description

Unipi Extension xS51 is an extension module communicating via the RS485 serial interface (Modbus RTU). The module is a simple and inexpensive method of extending your project by additional inputs & outputs. The xS51 features a set of analog I/Os combined with a set of digital and relay I/Os. The module is designed for installation on a DIN rail and is compatible with both Unipi Neuron and Unipi Patron controllers, as well as PLCs from other vendors.

Basic features

*More detailed info about the number and type of analog I/Os is available in the product's datasheet (see the Files tab above)

Inputs & outputs description

Digital inputs (DI) are designed to read binary logic states represented by direct voltage levels. That makes them suitable for reading data from various binary sensors and devices such as switches (on/off), motion sensors (movement detected/not detected), liquid level sensors (full tank/empty tank), etc. All digital inputs also feature counter functionality by default.

Relay outputs (RO) are primarily used for switching two-state devices with higher current draw such as lightbulbs, thermoelectric valve drives, water heaters, pumps, etc.

Analog inputs (AI) are designed to measure voltage, current, or resistance to read values from various analog sensors such as thermometers, pressure meters, tensometers, etc.

Analog outputs (AO) serve for control of multi-state external devices through direct voltage and is suitable for control and regulation of devices such as three-way valves, heat exchangers, electric motors, etc. 

Communication interfaces

Extension modules communicate through the RS485 interface (Modbus protocol). The connection manual for extension modules can be found on this link.

Other functions

Along with standard inputs and outputs, the module also features other functions broadening its possible uses. For more information on these features, please visit our Knowledge Base.

• Direct Switch
• Default settings
• Master Watchdog
• Manual and software configuration of communication parameters 
• User-freely programmable LEDs

Package contents

• extension module
• removable screw terminals
• DIN rail holder (35 mm)
• 3× DIN rail holder mounting screws
• 1× grounding screw

Further information

• First steps with Unipi Extension
• Unipi product catalog
• Online documentation for Unipi Extension