Product line of programmable controllers UniPi Neuron S101, S102, S103, M101, M102, M103, M201, M202, M203 M301, M302, M303, M401, M402, M403, L201, L202, L203 L301, L302, L303, L401, L402, L403 1
Contents 1 Introduction .................................................................................................................................3 2 Installation and connection ..........................................................................................................4 2.1 Neuron product structure .....................................................................................................4 2.2 Description of connectors and indication LED diodes .........................
1 Introduction What is UniPi Neuron? UniPi Neuron is a product line of compact freely programmable controllers for automatic regulation and monitoring in residential and commercial premises and light industry areas, except for system which are critical for security. Whole Neuron product line consists of a variety of controllers which differ in configuration and number of inputs / outputs. It also includes extension modules for RS485 (Modbus) serial line.
2 Installation and connection Basic instructions Always follow these instructions during the installation: Make sure you meet the actual standards and rules and all regional and state regulations. Always turn off the power supply before any manipulation (mounting / demounting). Use a wire with appropriate wire gauge. Do not exceed screw torque of removable screw connectors. Follow installation and operating conditions. Keep the cabling as short as possible.
The following picture shows numbering of inputs, outputs, and groups of the product Neuron L40x. 2.2 Description of connectors and indication LED diodes 2.2.1 LED diode description Name PWR RUN Digital inputs Digital outputs Relay outputs TX RX State On Constantly On or Off Short blink after 2 sec On for 2 sec + Off 2 sec On On On Blinks Blinks Purpose Indication of power supply voltage HW malfunction indication Communication OK Communication timeout reached - MWD Indication of log.
2.3 Dimensions 2.3.1 UniPi Neuron Type S 2.3.
2.3.3 UniPi Neuron Type L 2.4 Device mounting 2.4.1 Mounting / demounting All products of the Neuron product line are designed for mounting onto 35 mm DIN EN 50022. Mounting If no DIN rail holder is attached to the Neuron product it is necessary to attach it first with provided screws. When attaching the DIN rail holder, the holder must be attached such way that the metal spring is positioned in the upper side of the device.
Attention In case of installation of the device into a distribution box without forced circulation of air there must be minimum 80 mm space between the sides of the device and the walls of the distribution box. If it is not possible to provide sufficient air circulation in the distribution box it is necessary to enhance air circulation with installed ventilation fan. Maximum temperature of air entering the device must not exceed the values stated in chapter 4.6.
Attention The device is classified as appliance class 1. That is why it is also necessary to connect protective ground conductor to ground connector of the device marked on the case with symbol. For ground conductor connection use cable eye and provided M4 screw. Note DIN rail with the installed device must be connected to protective ground conductor. 2.4.3 Communication line connection 2.4.3.1 RS-485 The RS-485 (EIA-485) serial line is made on screw connectors labeled as RS-485 (A and B).
Note These instructions are recommendations only and may vary depending on the environment, the total bus length and number of sensors. 1-Wire channel features RESET function, which serves for resetting of the whole 1-Wire bus. This may be useful when used in unstable environment. Configuration of this function depends on chosen software as further described in chapter 3. 2.4.
These functions are evaluated directly in the processor within the group and are not dependent on the control software. Direct switch functions are useful for example for light switching or handling similar time-critical applications (typical output reaction time equals input reaction time as further described in chapter 4.1). Note Direct Switch functions can be configured only for matching input and output, i.e. only for input DiY.X and output DoY.X (or RoY.
Attention Integrated flyback diode is designed for connection of devices within the group of digital outputs. Using flyback diode for different connections may cause permanent damage to the device. 2.4.6 Analog input connection Analog input serves for reading voltage value in range 0-10 V or current in range 0-20 mA. The type of measurement is configured depending on used software.
Note It is not possible to measure resistance sensors through Analog inputs in Group 1. Such measurement is possible to achieve trough connection to Group 1 analog outputs. This fact is further described in chapter 2.4.7. Measuring of voltage and current on analog input of group 1 For precise measurement of analog input, it is necessary to do a correction of converted value with reference voltage stored of the processor and also a correction of other coefficients read directly from corresponding registers.
(𝐼𝐴𝑂1𝑑𝑒𝑠𝑖𝑟𝑒𝑑 − 𝐼𝐴𝑂 = 𝐴𝑂1𝐴𝑜𝑓𝑓𝑠𝑒𝑡 ) 10000 𝑉𝑟𝑒𝑓 ) 𝑉𝑟𝑒𝑓𝐼𝑛𝑡 𝐴01𝐴𝑑𝑒𝑣 ) ∗ 10 ∗ (1 + 4095 10000 (3.3 ∗ Were the IAO1desired is the desired value in mA. Remember that the value written to the register should be truncated in order to fit in the 16bit register (the value must be integer within 0 – 4095). Connection of PT1000 to AO of Group 1 Alternative function of analogue output in Group 1 while set to current source is the measuring of connected resistor.
circuit breaker is to be chosen appropriately according to electrical load and its characteristics while considering maximum current of the output, eventually group of outputs. Note In case of connected inductive load (such as electromotor, coil of a relay or contactor or even power cabling in complex electroinstallations) it is recommended to protect relay outputs with an appropriate external component (e.g.
3 Software Thanks to opened design of the whole system user is not restricted to use just one specific software for regulation and configuration. Overview and guides for all compatible software platforms is available on www.unipi.technology, eventually on the website dedicated to each specific software platform. As a basic provided software for simple implementation of user application is OS Linux and communication interface Modbus on TCP protocol. This image can be freely downloaded from downloads.unipi.
3.2.2 1-Wire bus 1-Wire bus is implemented through DS2482 bridge connected to I2C interface of the main processor (in the OS Linux accessible through standard drivers located in /dev/class/i2c/). For making it operational it is possible to use various other methods along with those described below. DS2482 kernel module o Support implemented right in the OS kernel (module DS2482) OWFS (1-Wire File System) o Solution providing access to 1-Wire devices directly through the file system 3.
Note If letter R is in the register description it stands for the read-only variable. If letter W is in the register description it stands for write variable. If letters RW are in the register description it stands for variable possible to read and write into at the same time (i.e. its values can change not depending on the program – e.g. CNT). 3.4 Function description 3.4.
Note If DO is switched on, PWM value is ignored. On the contrary if PWM value is different than 0 and DO is switched from 1 to 0, PWM function is activated. Cycle length Tc is set with PWMprescale and PWMcycle. Its value can be calculated using the following formula: 𝑇𝑐 = (𝑃𝑊𝑀𝑝𝑟𝑒𝑠𝑐𝑎𝑙𝑒 + 1) ∗ 𝑃𝑊𝑀𝑐𝑦𝑐𝑙𝑒 48𝑀𝐻𝑧 Example When PWM_prescale is set to 4799 and PWM_cycle is set to 100, Tc equals 10ms (100Hz). Furthermore, setting of PWM value to 50 duty cycle will equal 50% on frequency 100Hz. 3.4.
3.4.4.3 1-Wire bus enabling Models featuring 1-Wire bus also feature function for bus enabling/disabling. In default settings, the value of OW_off variable is set to False, thus the bus is enabled. Setting it to True disables the bus. 3.4.4.4 Master Watchdog (MWD) Configuration of the Master Watchdog function is done through MWD_enable and MWD_timeout variable for each group. These variables determine condition for Watchdog activation. Master watchdog monitors communication with the given group.
TrueVref Reference value of 3.3V processor of the given group. This value serves as reference for precise measuring on analog inputs of the given group. Recalculation of the value acquired from registers to the correct reference value describes the following formula. 𝑉𝑇𝑟𝑢𝑒𝑉𝑟𝑒𝑓 = 3.
4 Technical details 4.1 Digital inputs Input screw connectors Common ground Galvanic isolation Operation range Input voltage for logical 0 Input voltage for logical 1 Input resistance for logical 1 Minimal pulse width Delay logical 0 –> logical 1 Delay logical 1 –> logical 0 DI DIGND Yes, between groups 5 – 24 V DC Max. 3.5 V DC Min. 4,5 V DC 6 200Ω 20 μs 20 μs 60 μs 4.
Maximum output voltage Maximum output current Output voltage accuracy Output current accuracy Resistance measurement accuracy 0 – 2kOhm Pt1000 measurement accuracy 10 V 20 mA ±0.5% ±0.5% ±0.5% ±0.5% 4.