UniPi Axon L205 is a programmable logic controller (PLC) designed for control, monitoring and regulation. L205's architecture focused on digital inputs and relay outputs, but offers significant increase in I/O number.
The L205 is a basic model of the Axon L. It represents an enlarged variant of the M205 model with significiantly increased number of digital inputs and relay outputs. Digital inputs can be used for reading digital signals from corresponding sensors, relay outputs are then suitable for switching various two-state devices such as boilers, water heaters, circulation pumps or other, stronger relays. That makes the L205 especially suitable for control of intelligent heating, ventilation or air conditioning (HVAC) systems.
36 digital inputs (DI) are designed for reading logical states (true or false), which are represented by levels of DC voltage. That makes them suitable for reading two-state sensors such as switches (on/off), movement sensors (movement/no movement), water level sensors (water present, no water) etc. The software detects logical 1 (true) if the input voltage between given DIx.y and DIGND is between 5-35V. If the voltage is lower than 3.5V, the state is evaluated as 0 (false)
4 digital outputs (DO) are used for controlling two-state devices such as lights, door locks, window blinds etc. Digital outputs on our controllers also feature the PWM (Pulse-width modulation) function, enabling a special type of analog control. Outputs are of the NPN type (open collector) and are able to control devices with voltage up to 50V and up to 750mA load current.
28 relay outputs are used for control or switching of devices with higher current loads. ROs are thus suitable for controlling light bulbs, thermoelectric valve drives, water heaters, pumps etc. Relay outputs on UniPi controllers are rated for 5A max. current at 230V AC/30V DC voltage.
1 analog input (AI) can be used for 0-10V DC voltage or 0-20mA current measuring, making them suitable for reading values from analog sensors such as temperature sensors, pressure meters, tensometers etc.
1 analog output (AO) features two modes - 0-10V DC voltage or 0-20mA direct current. AI serves for control of devices with analog input, such as three-way valves, lighting dimmers etc.
The unit features a pair of RS485 serial lines. This type of serial line most often uses the Modbus RTU protocol. It can be used for communication with a wide variety of devices such as energy meters, touchscreen HMI panels, PLCs from other vendors or our Neuron xS extension modules. The bus can communicate with up to 32 devices with its total length being up to several hundred meters.
The controller also features a single RS232 serial line for communication between two devices. In automation, it is most often used for communication with HMI displays, various gateways or closed technologies.
Included is a single 1-Wire bus, using 2 or 3 conductors for communication with simple sensors such as thermometers, humidity meters or light intensity meters. A single bus can communicate with up to 15 sensors with maximum total length of the bus up to 100 meters.
For network communication, a single 1Gbit Ethernet is provided.
Customers can choose from a widee variety of software solutions thanks to the open nature of Axon controllers, and are not limited to a single platform. Available are both professional and open-source solutions.
Our main supported solution for UniPi controllers is the Mervis. This platform is developed in accordance with IEC 61131-3 PLC programming standard and contaiíns SCADA interface for remote management and monitoring, comprehensible development enviroment, user interface (HMI) editor and online/on-premise database for data archivation and retrospective operation analysis of monitored technologies.
Aside from commercial platforms, several open-source solutions are available as well. Alternatively, customers can use their own code or implement Axons into already existing software solutions through the use of EVOK open-source API.
Visit this link for supported software overview.
8GB eMMC onboard memory provides a high degree of reliability during repeated rewrites compared to systems using memory cards.
All components are protected by a durable anodized aluminium case providing IP20 protection. The unit’s size is 12 DIN modules, DIN rail holder is included in the package.
|Type S, size on DIN rail: 4 modules (7 cm)|
Ethernet 1 Gbit
4x 1.2 GHz, 1GB RAM
8 GB eMMC
|Type M, size on DIN rail: 8 modules (14 cm)|
|Type L, size on DIN rail: 14 modules (21 cm)|
*2x Ethernet (1 Gbit + 10/100 Mbit)
**4x IEC 62386 (DALI-compatible)
Technological specification of the product
|CPU||4x 1.2 GHz|
|Internal memory||8GB eMMC|
|1-Wire bus||Yes (galvanically isolated)|
|Dimensions||210 mm x 90 mm x 60 mm|
|Mounting||DIN (35 mm)|
|RTC backup||max. 7 days|