STRATO PI UPS Shield Raspberry Pi 2,3 Rtc, RS232/485, PSU 9-28VDC, Watchdog, Ups

✅ PRODUCT DETAILS

Multifunction shield for Raspberry PI 2 and 3 with RTC functions, WatchDog, buzzer, LED, RS232 and RS485 industrial serial ports, 9-28Vdc industrial standard power supply and UPS function. 

• PRODUCER: Home Systems Consulting SpA
• REFERENCE: LAYER PI UPS
• EAN CODE:

MANUAL | SCHEME | QUICK REFERENCE Multifunction shield for Raspberry PI 2 and 3 with RTC functions, WatchDog, buzzer, LED, RS232 and RS485 industrial serial ports, 9-28Vdc industrial standard power supply and UPS function. It has a UPS function that can be connected to a lead-acid buffer battery to ensure operation even in the absence of power. The Raspberry can control the power status and battery charge from software. Also available in our store is the din rail case (not included) suitable for this shield. Discover all the accessories and versions on EBAY | MECTRONICA STORE ATTENTION: Raspberry PI NOT INCLUDED!!! You can purchase it in our store here: EBAY | MECTRONICA STORE Strato Pi can be used in both industrial and residential environments, for professional applications where extreme reliability, robustness and compliance with technical and safety directives are required. It complies with the 2014/35/EU (low voltage) and 2014/30/EU (EMC) CE directives and the harmonized standards for electromagnetic compatibility (EN61000-6-2:2005), electrical safety (EN60664-1:2007), emission (EN61000-6-3:2007) and the RoHS directive for hazardous substances (2011/65 / EU). WHAT DOES PI BASE LAYER OFFER TO RASPBERRY PI? POWER SUPPLY A high-quality and stable power supply is extremely important to ensure reliable operation of your Raspberry Pi. Most USB power supplies are designed for charging mobile devices and not for continuous 24/7 loads. The Strato Pi accepts a wide range of power supplies and can effectively handle substantial amounts of ripple, noise, and supply voltage fluctuations. The power stage is a heavily protected and filtered circuit, using electrolytic capacitors, oversized diodes and inductors, and a high-efficiency voltage regulator. The step-down converter is based on advanced, high-power PWM converter ICs with low MOSFET resistance, with 95% efficiency and continuous output current up to 3A. It includes current limiting, overvoltage protection and thermal shutdown. The power stage is also reverse polarity protected with resettable fuses. Surge protection up to ±500V/2ohms 1.2/50μs ensures reliability in harsh environments. UPS In many cases, and particularly with data collection and database applications, Losing data due to a sudden power failure is simply not an option. Strato Pi has a built-in uninterruptible power supply that provides ample time to save data and cleanly shut down in the event of a power failure. The battery power stage is a heavily protected and filtered circuit, which supplies Strato Pi circuitry without interruption of its operations when the main power supply fails. This stage also performs battery charging through a high-efficiency step-up converter, thus generating the optimal charging voltage regardless of the main power supply value. REALTIME CLOCK The Raspberry Pi relies on Internet time servers to set the internal clock to the current date and time at startup. If your applications always ask for the correct time, even when not connected to the Internet, you need to have a local real-time clock/calendar to permanently keep track of the time, even when the Raspberry Pi is turned off. Strato Pi features a real-time clock/calendar with battery, directly connected to the Lamp board via the I2C bus interface. Automatic switching on a lithium battery ensures the functionality of the RTC when its electrical supply fails. The real-time clock is based on the MCP79410 generic RTCC chip from Microchip. It is connected to the Raspberry Pi's I2C bus and, in addition to the standard clock function, has several other advanced features. A CR1220 lithium battery is used as a backup power source when main power is unavailable. If the Strato Pi board is always powered, this battery should last well over 10 years. While the battery is soldered onto the board, it is not difficult to replace. RS232 and RS485 RS-232 and RS-485 serial ports are still widely used to connect devices in professional automation and other applications. The Raspberry Pi lacks the circuitry to implement these protocols. While many USB adapters are available at reasonable prices, they are usually not heavily protected and isolated. The interface circuits of the RS-232 and RS-485 serial ports on the Strato Pi are isolated from the main and battery supply voltages, thus avoiding possible failures due to ground cycling. Isolation is achieved using a converter High efficiency isolated DC-DC and three high-speed optocouplers. A microcontroller, using a proprietary algorithm, automatically manages the direction of the RS-485 data, taking into account the transmission speed and the number of bits, without any particular configuration. The Lamp board can then communicate via its TX/RX lines without any other additional signals. HARDWARE WATCHDOG A hardware watchdog is an electronic circuit that can reset or power cycle if, for any reason, the software application appears to be stuck. An automatic hardware reboot after a software crash can save your day, especially on unmonitored applications that need to work continuously. Taking advantage of the Strato Pi micro-controller on board, we have implemented a hardware watchdog circuit that can be used to perform a complete power cycle of the Raspberry Pi. The Strato Pi watchdog is completely independent of the Raspberry Pi's internal CPU monitoring circuitry and, controlled by the Raspberry Pi's GPIO pins, is extremely easy to control using simple custom scripts in the application. The watchdog, after a software crash, completely removes power to the entire Raspberry Pi board and all its USB ports, as well as the auxiliary power output on the Strato Pi UPS, potentially more effective at recovering from temporary malfunctions than other watchdog solutions. MECHANICAL CONSTRUCTION A standard, modular enclosure is usually a strong requirement in most professional installations. A bare Raspberry Pi cannot be used as it is in these cases. The Strato Pi server can be housed in a standard din case with omega-rail mounts. The case is 4 modules wide, equal to 71.0mm. (note the case can be purchased separately) The Strato Pi edge is mounted on the top of the Raspberry Pi and has a footprint that does not exceed the Raspberry Pi's own dimensions, making it compatible with various third-party cases. A high-quality 4-layer circuit board is used to package all of the Strato Pi components into a relatively small board. Some of the Pi's GPIO pins are pass-through and could be used with appropriate connectors for other applications. Features: 9-28Vdc power supply, with polarity protection overvoltage and reverse real-time clock with on-board lithium battery back-up Standard RS-232 and RS-485 interfaces to the Raspberry Pi's serial line, with shutter protection and electrostatic discharge protection On-board buzzer, connected to an I/O pin of the Raspberry Pi board, for audible feedback On-board LEDs for power and serial line activity Power and Connections serial ports on a screw terminal hardware watch installed in the Strato Pi panel, completely independent of the Raspberry Pi, controlled via the I/O pins of the Raspberry Pi plate Features: 9-28Vdc power supply, with surge and reverse polarity protection real time clock with on-board lithium back-up battery standard RS-232 and RS-485 interfaces to the Raspberry Pi serial line, with opto-isolator and electrostatic discharge protection on-board buzzer, connected to an I/O pin of the Raspberry Pi board, for acoustic feedback on-board LEDs for power supply and serial line activity power supply and serial connections on a screw terminal block hardware watchdog implemented in the Strato Pi board, fully independent from the Raspberry Pi, controlled via the I/O pins of the Raspberry Pi board integrated uninterruptible power supply, using external lead-acid 12V battery 1.1A resettable fuse on battery input auxiliary power supply output voltage, to power external devices with the Strato Pi UPS simple UPS status and control via the I/O pins of the Raspberry Pi board on-board LED for battery operations status SPECIFICATIONS Power supply 9/28V⎓ (VDC) Reverse polarity protection with 1.1A resettable fuse. Surge protection up to ±500V/2ohms 1.2/50μs Battery input (UPS version only) 12V lead acid battery (not provided). Suggested capacity: 1.2Ah. Reverse polarity protection with 1.1A resettable fuse. Surge protection up to ±500V/2ohms 1.2/50μs Battery charge voltage (UPS version only) 15V Battery charge current (UPS version only) 30mA at 12V battery voltage Voltage threshold for switching to battery mode (UPS version only) 7.2V, 0.2V hysteresis Current consumption at VS+=12V⎓ including Raspberry Pi 3 current, with low CPU/GPU load and no USB devices connected 150mA w/o Ethernet and battery 180mA with Ethernet, battery and RS485 Actual current consumption may vary based on working conditions Current consumption at VS+=24V⎓ including Raspberry Pi 3 current, with low CPU/GPU load and no USB devices connected 85mA w/o Ethernet and battery 100mA with Ethernet, battery and RS485 Actual current consumption may vary based on working conditions Raspberry platform compatibility Pi 3 Model B Pi 2 Model B Serial communication ports RS-485 Half-Duplex with automatic data direction management RS-232 Full-Duplex Baud Rates on COMM ports 1200 to 115200 ESD-Protection Voltage on RS-232 TX/RX ±15kV human body model ±8kV contact discharge ESD-Protection Voltage on RS-485 A/B ±15kV human body model ±8kV contact discharge Surge protection on RS-485 A/B Surge protection up to ±500V/2ohms 1.2/50μs; 600W peak pulse power capability at 10/1000μs waveform Fail safe feature on RS-485 Yes 17 User Guide Real time clock Internal RTCC circuit with back-up Lithium battery Expected battery life without main power supply: ~3 years Expected battery life with main power supply: >10 years Housing standard 4M for din rail Operating temperature 0…+50 °C Storage temperature -20…+70 °C Protection degree IP20

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