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Micha Solar MSR2-30 Product Manual

Charge controller
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MSR2-30 Charge Controller
Product Manual
Issue 9

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Summary of Contents for Micha Solar MSR2-30

  • Page 1 MSR2-30 Charge Controller Product Manual Issue 9...

  • Page 2: Health And Safety

    The MSR2-30 Charge Controller has connections for two solar arrays, one battery and one load. The basic function of the regulator is to control the transfer of energy from the array to the battery and load. The state of charge of the battery is sensed by monitoring the battery voltage.
  • Page 3 MSR2-30 Charge Controller 800817-9.doc Product Manual 3. MSR2-30 Control Unit Operation 3.1. Analogue Measurements The MCU uses an A/D converter to read the battery voltage, the array voltages, the temperature sensor and the array and load current if the metering option is included.
  • Page 4 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 3.4. Status LED A status LED is used to provide basic unit status to the user as described in the following table: Mode Status LED Operation Boost Mode Flash : 0.35 sec on - 0.35 sec off Equalisation Mode Flash : 1.05 sec on –...
  • Page 5 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 3.7. Default Values 2 Setpoints – Vented The setpoints for Vented Battey Cells and the operating parameters of the unit which are held in the Microcontroller are listed in the following table: Set-points –...
  • Page 6 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 3.9. NiCd Battery Settings Setpoints for NiCd Battey Cells are listed in the following table and can be adjusted by the user. First set the settings as Default Values 3 (Section 3.20 – Menu A Screen 13) and then manually adjust each...
  • Page 7 MSR2 Display PCB Assembly. 3.10. Control PCB Assembly In order to measure the total array current and the load current, the MSR2-30 Control PCB Assembly is populated with shunt resistors and some signal conditioning hardware if the MSR2-30 Metering option is requested.
  • Page 8 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 3.14. Menu 0 Menu 0 is the menu for the display of the present Regulation Mode in which the Control Unit is operating: Boost, Equalisation, Float, Night (if inadequate array voltage detected) and Disabled (disabled by jumper link LK2).
  • Page 9 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 3.20. Change Settings Menu List Menu A Screen Description CHANGE SETTINGS: Screen 0 Boost Regulation Voltage Set-point Boost V: 29.4 CHANGE SETTINGS: Screen 1 Float Regulation Voltage Set-point Float V: 27.6 CHANGE SETTINGS:...
  • Page 10 4. MSR2-30 RS232 Communications (Type 1 = Normal - Micha Protocol) The MSR2-30 RS232 option consists of an add-on MSR2-30 RS232 PCB Assembly which plugs into the MSR2-30 Control PCB Assembly. The RS232 option allows a PC to interrogate the MSR2-30. The MSR2-30 will respond with data in a specified format.
  • Page 11 800817-9.doc Product Manual 4.5. Settings Format The format for the system settings ASCII string is given in the following tables: PC String: “S” followed by carriage return MSR2-30 Settings String: “AA.A,BB.B,CC.C,DD.D,EE.E,FF.F,GG.G,HH.H,II.I,J,KK,END” Parameter Description Parameter code AA.A Boost Regulation Voltage Volts BB.B...
  • Page 12 800817-9.doc Product Manual 5. MSR2-30 RS232 Communications (Type 2 = Modbus ASCII Protocol) The RS232 Port PCB Assembly has a 3-way terminal block to terminate the Transmit (TX), Receive (RX) and Ground (GND) connections from the PC. The RS232 Communications requires the following format: 9600 Baud, 1 Start Bit, 7 Data Bits, 2 Stop Bits, No Parity.
  • Page 13 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 5.2. Modbus Memory Map - Discrete Inputs (Digital Inputs) Input Register Numbers = 10001 to 19999 / Data Address = 0 to 9998 Function 02 – Read Discrete Inputs (Read Digital Inputs)
  • Page 14 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 5.3. Modbus Memory Map - Analog Input Registers (Analogue Inputs) Input Register Numbers = 30001 to 39999 / Data Address = 0 to 9998 Function 04 – Read Input Registers (Read Analogue Inputs)
  • Page 15 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 5.4. Modbus Memory Map - Analog Output Holding Registers (Analogue Outputs) Input Register Numbers = 40001 to 49999 / Data Address = 0 to 9998 Function 03 – Read Holding Registers (Read Analogue Outputs) Function 06 –...
  • Page 16 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual Not used 2 bytes 1 Analog Output Not used 2 bytes 1 Analog Output Not used 2 bytes 1 Analog Output Not used 2 bytes 1 Analog Output Not used 2 bytes...
  • Page 17 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 5.5. Example Query: Function 01 - Read Coils 0-10 Start Slave Func- Start Address No of Coils Carr- Line Description of Colon Addr tion Retrn Feed Characters High High ASCII Response Start...
  • Page 18 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 5.9. Example Query: Function 05 - Write Single Coil: 10 = ON (Write Data must be FF 00) Start Slave Func- Coil Address Write Data Carr- Line Colon Addr tion Retrn Feed...

  • Page 19: Installation

    6.1. Mounting and Position 6.1.1. The MSR2-30 Charge Controller should be installed using either the two mounting feet or using the four fixing points which are hidden by the cover fixing screws (see Figure 3). Ensure that the fixing method employed is sturdy enough to support the weight of the Unit. Position the unit so that it is shaded from direct sunlight, sheltered from extreme weather conditions and oriented so that the cable glands are pointing downwards.
  • Page 20 MSR2-30 Charge Controller 800817-9.doc Product Manual 6.3. Electrical Connections Ensure the Jumper Link LK2 on the MSR2-30 Control PCB Assembly is fitted in the DISABLE position. Make the electrical connections in the following order: 6.3.1. Connect the terminal BATTERY +VE to the Battery positive.
  • Page 21 Product Manual 7. Re-Configuring the MSR2-30 Charge Controller The MSR2-30 Charge Controller is factory configured for System Voltage (12V, 24V or 48V) and System Polarity (Positive Earth (common positive) or Negative Earth (common negative)). If the factory configured controller voltage or polarity does not match the intended system voltage or polarity then the unit must be re- configured before installation.
  • Page 22 800817-9.doc Product Manual 7.3. MSR2-30 Control PCB Assembly Layout Diagram– Positive Earth / Common Positive Connection Label 7.4. MSR2-30 Control PCB Assembly Layout Diagram – Negative Earth / Common Negative Connection Label Page 22 of 23 Document: 800817-9.doc Date: September 2017...
  • Page 23 Micha Solar MSR2-30 Charge Controller 800817-9.doc Product Manual 8. Software 8.1. Software History Software Date Comments Version Released 801 454 16 Nov 2007 Production Issue Ver 1.0 801 454 5 Dec 2008 Added Array 1 & Array 2 Switches can operate together Ver 1.1...