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Parijat Distributed Control System

Parijat Distributed Control System (PDCS) is very versatile and scalable embedded system. It is a newly developed product that uses the latest technology to provide the control and monitoring for your application. It employs the latest Single Board Computer (SBC) as the controller and various peripheral interface cards (PIC) for monitoring and controlling the field devices. The salient key features of the system are:


Overall Features:

  • Suitable for distributed control application
  • Control, HMI integrated into one system
  • Combination of SBC and PIC as well as individual PIC available
  • Up to 8 PIC can be stacked on SBC
  • Manual override in case of emergency can be done through HMI directly
  • Real Time Clock (RTC) functionality
  • DIN rail mounting for all the SBC as well as PIC
  • Optional explosive environments compatibility
  • Retains configuration during power loss
  • Modbus serial or Modbus TCP functionality
  • Over 200 other protocols available as an option
  • The software code can be customized later if hardware change required

SBC Features:

  • Low Cost, Small Size
  • Operating voltage 5V/3A
  • Low Power Consumption
  • Operating voltage 0°C to 70°C
  • GPIO Pins: it has a set of GPIO (General Purpose Input/Output) pins that allow it to interact with other devices and sensors.
  • High Performance: 4 ARM Cortex-A53 @ 1.512GHz
  • Up to 2GB DDR3 SDRAM
  • 4 USB 2.0 Type A
  • 100 Mb Fast Ethernet
  • 5mm TRRS AV Jack
  • HDMI 2.0
  • MicroUSB Power In
  • MicroSD Card Slot
  • eMMC Interface
  • IR Receiver
  • U-Boot Button
  • 40 Pin Low Speed Header (PWM, I2C, SPI, GPIO)
  • Audio Headers (I2S, ADC, SPDIF)
  • UART Header
  • Camera and Display Support
  • Very High Extensibility

Software Features: Node-RED is the editor used  for visual programming tool designed for IoT (Internet of Things) and automation tasks. It provides a web-based flow editor that allows you to create workflows by wiring together various nodes. Each node represents a specific function or task, such as reading sensor data, processing data, sending emails, or interacting with other devices or services. The salient features of the Node-RED are:

  • Flow-Based Programming
  • Several Built-in Nodes
  • Built-in Dashboard
  • Debugging availability
  • Easy Deployment
  • Scalability, Extensibility
  • Custom scripting and user nodes development

PIC cards features:

  • Pluggable Connectors 26-16 AWG wires
  • Eight Level Stackable
  • Reverse power supply protection
  • Operating voltage 5V

Available PIC card

  • Digital Input (DI) card
    1. Sixteen LV Digital Inputs
    2. All inputs opto-isolated reading 3V-24V AC/DC
    3. Reverse polarity protection
    4. RS485
  • Digital Output (DO) card
    1. Sixteen Relays 2A/24V
    2. All Relays with Status LEDs and NO contacts
    3. Software self-test
    4. Pluggable Connectors
    5. RS-485 port
  • Mix Card (combination of DI, DO, AI, AO)
    1. Four Optically Isolated Digital Inputs with status LEDs
    2. Four 0-10V or ±10V Analog Inputs, 1KHz sample rate
    3. Four Optically Isolated 4-20mA Inputs, 1KHz sample rate
    4. Four Optically Isolated Open Drain Outputs, 24V/4A peak
    5. Four 0-10V Analog Outputs; Four 4-20mA Analog Outputs with load interruption detection.
  • Thermocouple card
    1. Supports 8 T/C channels each type J, K, T, N, E, B, R and S
    2. 24 bit delta-sigma A/D converters
    3. Factory accuracy: 1%
    4. Maximum accuracy (through calibration): 0.1%
    5. Maximum acquisition speed 40 cps
    6. RS485/MODBUS transceiver with two connector ports
    7. Programmable threshold LEDs on all inputs
    8. Pluggable Connectors 26-16 AWG wires
    9. On-board hardware watchdog
    10. Reverse polarity power supply protection
    11. General Purpose Pushbutton
    12. On-board resettable fuse
  • RTD card
  1. Supports 8 RTD Channels
  1. Factory accuracy: 0.1%
  2. Maximum accuracy (through calibration): 0.01%
  3. Maximum acquisition speed 40 cps
  4. Eight layer stackable to 64 RTD channels
  5. RS485/MODBUS transceiver
  6. Programmable threshold LEDs on all inputs
  7. Pluggable Connectors 26-16 AWG wires
  8. On-board hardware watchdog
  9. Reverse polarity power supply protection
  10. General Purpose Pushbutton
  11. On-board resettable fuse