portfolio page
Website

Multi Plot Motor Controller

Multiplot system is a conceptualize modular design for big farm, where this farm is divided in to multiple small farms called as plot. Pump motor controller for multiplot is a device used to control pump motor for multiplot system. This device is usually different from traditional motor controller in many ways. This motor controller can be control by using mobile application installed on the farmer mobile phone. The android mobile application automatically calculates the water uses called irrigation time individually for each plot. This irrigation time for each plot can be sent to motor controller. This motor controller switch on the connected motor for the summation of time interval for all the individual plots. This smart device has some additional features like dry run protection, power fluctuation protection etc. Each plot has separate solenoid valve controller unit which receives its irrigation time interval and priority sequence wirelessly from motor controller.  

·        This motor controller is suitable for single phase as well as three phase pump motors.

·        It is operated via DOL starter connected in between pump motor and this device.

·        It efficiently makes sure the water is used as needed. It also ensures optimum electricity uses.

·        The mobile application uses a highly efficient algorithm to calculate irrigation time for each plot. On top of that the farmer can also edit irrigation time for all individual plots hence provide full flexibility.

·        The dry run protection is achieved using current sensor connected in one of the motor outgoing wire.

·        Phase protection device is connected to the three-phase supply to ensure power failure protection.

·        There is a wireless connectivity between pump motor controller and individual solenoid valve controller. This wireless communication uses LoRa (long range) communication protocol with star topology network design for each plot.

·        Solar energy is used to power individual solenoid valve controller.

 

Features of multiplot motor controller

 

·        Microcontroller based very precise design.

·        Support up to clock speed of 16MHz.

·        Bootup time is less than 18sec.

·         3ø - 3 wire input.

·        Monitors Phase sequence, Phase missing.

·        LED indication: Relay ON.

·        4G, 3G,2G universal SIM type support including BSNL.

·        Wi-Fiprotocol - IEEE 802.11b/g/n.

·        Communication System - LTE/DC-HSPA+/HSPA+/HSPA/UMTS/EDGE/GPRS/GSM.

·        Speed FDDLTE Cat4: 150/50 Mbps @20 M BW HSPA+ 42/5.76, 21/5.76 Mbps HSPA: 14/5.76,7.2/5.76 Mbps.

·        External Antenna Interface-TS-5 of 2dB and 50ohm impedance.

·        Receive Diversity- All the LTE and 3G bands.

·        Dry run protection through motor current sensing up to 100 amperes.

·        Meet UL94-V0flame retardant properties.

·        Switching angle 180 degree for non-invasive current transformer.

·        Non-linearity±3%(10%-120% rated input current)

·        Frequency50 Hz to 150KHz.

·        Indicator LED for Power, Motor status, Network status, Fault and dry run.

·        IP-65 protection for enclosure.

·        External panel screw connector for external devices like motor sensor and DOL starter.

·        Irrigation time and time remaining display on 20*4 alphanumeric LCD.

·        Directandroid mobile application connectivity support.

·        It supports LoRa communication protocol at 868MHz frequency.

·        This communication support star and mesh topology.

·        Uses renewable source of energy (solar panel) to power individual plot solenoid valve controller.

·        Inbuilt solar charge controller for each plot.

 

Operation of multiplot motor controller

 

Procedure

  1. Place any SIM card with activated internet pack in to the SIM card slot provided in the control panel.
  2. Make sure the external antenna should be put in vertical direction and as far as possible from any sharp metallic object and the power source/control panel.
  3. Connect three phase power supply to L1, L2, L3, N, E labelled motor controller connector.
  4. Connect DOL starter to 1, 2, 3 labelled motor controller connectors.
  5. Connect sensor to -S and S labelled motor controller connector.
  6. The clamp side of sensor should be put across any one of the three wire of motor controller.
  7. Please make sure all terminal connectors are tightly connected.
  8. Switch on the power supply of control panel.
  9. Wait for network status LED to turn ON.
  10. Switch on all the solenoid valve  controller for each plot.
  11. Open android application and send the irrigation time for each plot to motor controller.
  12. The irrigation time for all the plots should be immediately display on the LCD of motor controller.
  13. The motor status indicator LED should be turn ON and at this time the pump motor starts running.
  14. At this point the irrigation of plot should happen according to priority sequence.
  15. If there is no water in the well (water source), the motor stops running and hence it saves electricity and motor damage.
  16. The DRY RUN protection LED status turn ON.
  17. If power cut is found in between operation then immediately after power on, the remaining irrigation time will be executed by the motor controller.

 

Advantages

 

·        Portable and easily installable.

·        It’s IP65grade enclosure is suitable for harsh environmental condition.

·        Motor controller designed with quality components promises longer life cycle of the implement.

·        It ensures faster operation and completes function in less time reducing electricity consumption and water uses.

·        The pump motor can be controlled using this mechanism from any remote places hence no distance restriction.

·         All components of motor controller consume every less power hence contribute towards the power saving.

·        Inbuilt mechanism for dry run protection and power failure protection.

·        Solar energy is being used to power solenoid valve controller.

·        The inbuilt battery inside solenoid valve controller insures continuous working 4 days even in cloudy condition.

·        SS316material for all solenoid valve ensures corrosion free operation.

·        Wireless communication between pump controller and individual plot solenoid valve controller makes wiring process at ease hence portable.

 

General Instructions

Ø  Only trained electrician should be allowed for the installation of motor controller.

Ø  Don’t interfere the wiring of motor during its operation.

Ø  Keep the distance between motor controller and DOL starter as minimum as possible.

Ø  Current sensor wire should not be put anywhere near to motor wire and AC wire.

Ø  Use foamed and bubbled packaging box to transport this device to avoid any physical damage.

Ø  Never use single phase designed motor controller with three phase power supply and vice-versa.

Ø  The farmer and end users should be properly trained for android application and motor controller operation.

Ø  Before making installation changes make sure the power supply is completely disconnected/removed.

Ø  The three-phase supply should be connected in proper sequence with the motor controller i.e R, Y, B should be connected with L1, L2, L3 in sequence.

Ø  Make sure the height of LoRa antenna should be minimum 2 meter from ground level.

 

Safety measures

General safety suggestions include:

·          Read and follow the manufacturer’s instructions for operation.

·          Don’t remove or modify safety features.

·          Ensure that everyone working on the farm is thoroughly familiar with operating procedures and safety requirements of motor controller use.

·          Never use motor having rating more than 10HP.

·          Please make sure the motor controller main switch is off before making any connection.

·          Use of minimum 11kv insulating gloves should be recommended for installation.

·          Never place any electrical measuring instrument near the motor controller.

·          Fit falling object protective structures (FOPS) for motor controller.

·          Keep a well-stocked, up-to-date first aid kit in an accessible area.

·          Place a fire extinguisher nearby motor controller to avoid any fire damage.

·          Repair and replacement of component should be done with appropriate ratings and by authorized person.

·          Always use insulated tools for installation and replacement of any parts.

·          Avoid direct sunlight exposure to this motor controller for long duration.

·          Do not place any heat source nearby motor controller.

·          If solar panel is not used make sure the battery should not drain less than 10.5volt.

·          Avoid any magnetic material nearby solenoid valve.

24

Team Member

99%

Positive Feedback

40+

Projects done

10M

Lines of code