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Micha Solar MSRx User's Operation Manual

Charge controller
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Micha Solar
1. Overview
MSRx Charge Controller uses a microprocessor running embedded software to achieve the
required operation.
requirements of an industrial charge controller while maintaining a cost effective solution. The
MSRx Software is the same for various specific solutions.
Quick Start Guide:
Simple steps to get the controller powered up and working
General Operation:
Explanation of the operation and functions available
Information Screens:
Information available to the user on the LCD Display
Changing Settings:
How to access and change the settings
Expansion Modules:
Description of features and functions that can be added
Battery Settings:
Tables of default Battery Settings programmed in the factory
Software History:
Why and how the software has evolved over time
Page 1 of 46
Document: 802440-30.doc
MSRx Charge Controller
Specific hardware has been designed to fulfil different input and output
Make it work quickly!
How does the Controller work?
What information is available?
How are settings changed?
What additional features are there?
What are the default settings?
What changed from the last version?
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Date: December 2020
User Operation Manual
Page 2
Page 3
Page 6
Page 18
Page 32
Page 42
Page 45
www.micha.co.uk

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Summary of Contents for Micha Solar MSRx

  • Page 1 MSRx Charge Controller User Operation Manual 1. Overview MSRx Charge Controller uses a microprocessor running embedded software to achieve the required operation. Specific hardware has been designed to fulfil different input and output requirements of an industrial charge controller while maintaining a cost effective solution. The MSRx Software is the same for various specific solutions.
  • Page 2 Array Input and more than one Load Output. The MSRx Charge Controller provides connections for the Array Input, Battery and Load Output. It controls the Array & Load Relays to control the Battery charging and discharging.
  • Page 3 User Operation Manual 3. MSRx General Operation The MSRx Charge Controller is designed to control the charging of a battery in a solar power system, preventing damage to the battery due to over-charging or under-charging. It provides maintenance and supervisory functions and a convenient place to interconnect the solar arrays, battery bank and load equipment.
  • Page 4 Micha Solar MSRx Charge Controller User Operation Manual 3.4. Battery Voltage Regulation Algorithm In Software 801313 Version 5.0 and above the following Battery Voltage Regulation Algorithm is used: The Battery Voltage is read every 0.1 seconds (the instant value). If the Compensated Instant Battery Voltage is greater than or equal to the Battery Regulation Voltage, then all the Array Relays will be disconnected and charging will stop immediately.
  • Page 5 If the Enable/Disable jumper link on the MSRx PSU/Load PCB Assembly (or the Enable/Disable switch on the MSRx MDR Interface PCB Assembly) is set to the Disable position, then the Controller is in the Disabled Mode. Depending on the setting of Menu D Screen 10 (see Section 5.5) the Array Relays and/or Load Relays may be disconnected.
  • Page 6 IP rated switches) to allow the user to view the MSRx Information Screens. Alternatively, a single External Switch may be connected to the MSRx Control PCB Assembly on the IN1 switch input and this will provide a limited menu of screens to view some of the controller parameters.
  • Page 7 Micha Solar MSRx Charge Controller User Operation Manual 4.2. Menu 0 – System Information Menu 0 Screen System Information Description Batt:26.5V +123A 1-Up Press Up switch to see the Battery State of Charge (0-100%) Batt SOC: 100% Batt:26.5V +123A Home...
  • Page 8 Micha Solar MSRx Charge Controller User Operation Manual 4.2.1. Menu 0 Line 2 Mode & Alarm Descriptions Menu 0 Line 2 Mode & Alarm Descriptions Mode: Boost Boost Mode Mode: Equal Equalisation Mode Mode: Float Float Mode Mode: Night Night Mode...
  • Page 9 Micha Solar MSRx Charge Controller User Operation Manual 4.3. Menu 1 – System Information Menu 1 Screen System Information Description System Info: System Voltage: 12V / 24V / 48V 24V Neg Earth System Polarity: Positive Earth or Negative Earth Sys Volts: 25.6V Shows System Voltage and Temperature Sys Temp: +23.4C...
  • Page 10 User Operation Manual Menu 1 Notes: If a DRM Analogue Input Module is fitted to the MSRx Controller, it can be enabled to measure and display 1 x Auxiliary Voltage, 1 x Auxiliary Temperature and 1 x Solar Pyranometer. These inputs can be used to measure a second Battery Voltage and Temperature if selected.
  • Page 11 Load Voltage is measured at the MSRx Battery Connections Load V: 26.5V If the MSRx is set as a Version 1 or Version 2 Controller, one of the following screens will be shown: System Info: Screen Menu B Screen 3: Load Voltage: None...
  • Page 12 Time between Load Cut 2 Alarm activation and Load 2 disconnection System Settings: Equalisation Period in minutes Equalisation:30m System Settings: MSRx Control PCB Assembly Hardware: MSRx: Version 2 Select Version 1, Version 2, or 19” Rack System Settings: Number of Array Inputs: 1-8 No of Arrays: e.g.
  • Page 13 Press Select to change the state of the Relay contacts and LED Test Relay 5: Test Relay 5 (This screen is only visible for MSRx 19” Version) Press --> Select Press Select to change the state of the Relay contacts and LED Test Relay 6: Test Relay 6 (This screen is only visible for MSRx 19”...
  • Page 14 Micha Solar MSRx Charge Controller User Operation Manual 4.6. Menu 4 – Test Array Switches Caution: Testing the Array Solid-State Switches, (Relays or Contactors depending on Controller design) will connect or disconnect the Array Inputs to or from the Battery.
  • Page 15 Micha Solar MSRx Charge Controller User Operation Manual 4.7. Menu 5 – Array Voltages Caution: Showing an Array Input Voltage will disconnect the Array Input from the Battery Menu 5 Screen Show Array Voltages Description Show Array 1 V: Show Array 1 open-circuit Array Voltage...
  • Page 16 Micha Solar MSRx Charge Controller User Operation Manual 4.8. Menu 6 – Array Currents Caution: Showing an Array Input Current will connect that Array Input to the Battery and disconnect all other Array Inputs from the Battery Menu 6 Screen...
  • Page 17 Array 8 Open-Circuit Voltage and Closed Circuit Current Menu X Notes: Menu X is entered by pressing the switch connected to the MSRx Control PCBA IN1 input. Menu X provides a limited number of screens with system information. Pressing the External Switch will loop round the screens in turn.
  • Page 18 5.1. Entering the Change Settings Menus MSRx Standard Charge Controller: On the MSRx PSU/Load PCB Assembly, insert the jumper link on LK1 in the Disable position (or on the MSRx Interface PCB Assembly, move the Enable/Disable Switch to the Disable position).
  • Page 19 Micha Solar MSRx Charge Controller User Operation Manual 5.1.1. Menu Navigation The Menu, Up and Down switches are used to navigate to the setting to be changed. Pressing the Select switch will make the parameter flash. The Up and Down switches are then used to vary the value.
  • Page 20 Time between LC2 Alarm activated and Load 2 disconnected Change Settings: Equalisation Period (1 to 90 minutes) Equalisation 30m Change Settings: MSRx Control PCB Assembly Hardware: (Default: Version 2) MSRx: Version 2 Version 1 = 400327, Version 2 = 401764, 19” Rack = 400766 Change Settings:...
  • Page 21 Micha Solar MSRx Charge Controller User Operation Manual 5.3. Menu B – Change Settings Menu B Screen Change Settings Description Change Settings: Temperature Compensation Null Temperature TC Null Temp:25C The temperature at which zero compensation is applied Change Settings: Temperature Compensation Rate: -xxxmV / °C...
  • Page 22 Menu B Screens 5 – Load Cut 1 & Load Cut 2: When using the Solid-State Relay version of the MSRx, it is possible to connect Load 1 Output and Load 2 Output in parallel to provide a higher rated current capability.
  • Page 23 Relay 4 Function Load Cut 2 Alarm Any Alarm Function may be assigned (see next page) Relay 5 Function Relay 5 Function (only available on MSRx 19” Rack) Common Alarm Any Alarm Function may be assigned (see next page) Relay 6 Function Relay 6 Function (only available on MSRx 19”...
  • Page 24 MSRx Charge Controller User Operation Manual Battery Temperature 1 (BT1) Sensor is connected to the MSRx PSU/Load PCB Assembly Battery Temperature 2 (BT2) Sensor can be fitted using Micha PN: 103241 DRM Analogue Input Module The Battery Temperature Sense selection (Menu B Screen 2) must be set to “Yes” for the Battery Temperature Alarm to be enabled (i.e.
  • Page 25 Micha Solar MSRx Charge Controller User Operation Manual Menu C Screen 9 – Load Cut Reset Operation: Load Reset = Auto: If the Battery Voltage is greater than or equal to the Load Cut Reset Voltage, then the Load Cut Alarm will be deactivated and the Load Relay will be reconnected.
  • Page 26 Micha Solar MSRx Charge Controller User Operation Manual 5.5. Menu D – Change Settings Menu D Screen Change Settings Description Disable Req’d To Disable Switch or Link Required to Enter Settings Menus? Enter Settings:Y Y = Yes (default) / N = No...
  • Page 27 Micha Solar MSRx Charge Controller User Operation Manual In some applications the Disable Input is used as a Remote Disable and so the Disable Link or Switch cannot be used to Enter the Settings Menus Menu D Screen 1 – Disable Function Load Cut Delay:...
  • Page 28 Micha Solar MSRx Charge Controller User Operation Manual Menu D Notes (continued): Menu D Screen 10 – Disable Function: The Disable Function is activated using the Enable/Disable jumper link or slide switch (depending on the hardware version) or the Remote Disable Input. See also Menu D Screen 1.
  • Page 29 Micha Solar MSRx Charge Controller User Operation Manual 5.6. Menu E – Change Settings Menu E Screen Change Settings Description Set Exp Module: Press Select > Sub-Menu H: Relay Outputs > Relay Output Module set up screens Set Exp Module: Press Select >...
  • Page 30 Micha Solar MSRx Charge Controller User Operation Manual Menu E Notes: Menu E Screen 0-5 – Expansion Port Modules: For full details of the Expansion Port Modules and the Settings Menu, see Section 6 Menu E Screen 13 – Battery Temperature Charging Function:...
  • Page 31 Micha Solar MSRx Charge Controller User Operation Manual 5.7. Menu F – Change Settings Menu F Screen Change Settings Description Change Settings: Press Select to Accept any changes made Accept ? -> SEL Press Menu to ignore any changes made...
  • Page 32 MSRComms Software (available free from Micha Design) may be used to download the Data Log to a 6.7. MSRx RTD Interface Module The MSRx RTD Interface is designed to allow a PT100 Resistor Temperature Detector (RTD) to be used with the MSRx Charge Controller. The Interface can be supplied in DIN rail or pillar mounting and connects to the MSRx Expansion Port with a ribbon cable supplied.
  • Page 33 Micha Solar MSRx Charge Controller User Operation Manual 6.8. Expansion Port Settings Menu MSRx Expansion Port Module Settings available to the user are described on the following Menu Map Page 33 of 46 Document: 802440-30.doc Date: December 2020 www.micha.co.uk...
  • Page 34 Micha Solar MSRx Charge Controller User Operation Manual 6.9. Sub Menu H – 4-Channel Relay Output Module Settings Sub Menu H Screen 4-Channel Relay Output Module Settings Description Rly Mod 1: Rly 1 4-Channel Relay Output Module 1: Relay 1 Not Used Any Alarm Function may be assigned (see Section 5.4)
  • Page 35 Micha Solar MSRx Charge Controller User Operation Manual 6.10. Sub Menu I – 4-20mA Output Module Settings Sub Menu I Screen 4-20mA Output Module Settings Description 4-20mA Mod 1: 4-20mA Output Module 1: Output: Select Parameter to Output 4-20mA Mod 1:BV1 4-20mA Output Module 1: 4mA =>...
  • Page 36 Micha Solar MSRx Charge Controller User Operation Manual 6.11. Sub Menu J – Communications Module Settings Sub Menu J Screen Communications Module Settings Description Com Port: Micha Communications Port Function: Function: Comms Micha Comms / Modbus ASCII / Modbus RTU / Modbus TCP/IP...
  • Page 37 Micha Solar MSRx Charge Controller User Operation Manual 6.12. Sub Menu K – Earth Leakage Module Settings Sub Menu K Screen Earth Leakage Module Settings Description Earth Leak Mod: Earth Leakage Module Select: Select: Disable Disable / Enable (default = Disable)
  • Page 38 Micha Solar MSRx Charge Controller User Operation Manual 6.14. Sub Menu M – 8-Channel Digital Input Module Settings Sub Menu M Screen 8-Channel Digital Input Module Settings Description DigInMod1: I/p 1 8-Channel Digital Input Module 1: Input 1 Not used...
  • Page 39 Micha Solar MSRx Charge Controller User Operation Manual Sub Menu M Notes: Digital Input Alarm Function Descriptions: Displayed Text Alarm Function Description O/p Feed Sum Alm Output Feeder Summary Alarm Fire Detect Alrm Fire Detect Alarm DCDC Fault Alarm DCDC Fault Alarm...
  • Page 40 Micha Solar MSRx Charge Controller User Operation Manual 6.15. Sub Menu N – Load Voltage 1 & 2 Alarm Settings Sub Menu N Screen Load Voltage 1 & 2 Alarm Settings Description High Load Volt 1 High Load Voltage 1 Alarm Function:...
  • Page 41 Micha Solar MSRx Charge Controller User Operation Manual Sub Menu N Notes: 6.15.1. High Load Voltage 1 Alarm To enable the High Load Voltage 1 Alarm: Load Voltage selection on Menu B Screen 3 must include Load Voltage 1, and High Load Voltage 1 Alarm, Menu N Screen 0 must be set to Enable.
  • Page 42 20 ºC 20 ºC Temp Compensation Rate -30mV / ºC -60mV / ºC -120mV / ºC 7.2. MSRx Charge Controller Set-points for Vented Cell Batteries (Default Values 2) Controller Set-points Volts / Cell 12V System 24V System 48V System 14.40 ± 0.12V 28.80 ±...
  • Page 43 Micha Solar MSRx Charge Controller User Operation Manual 7.3. MSRx Charge Controller Set-points for VRLA Cell Batteries (Default Values 3) Controller Set-points Volts / Cell 12V System 24V System 48V System 13.80 ± 0.12V 27.60 ± 0.24V 55.20 ± 0.48V Boost &...
  • Page 44 Micha Solar MSRx Charge Controller User Operation Manual 7.5. MSRx Charge Controller Set-points for Gel/OPzV Cell Batteries (Default Values 5) Controller Set-points Volts / Cell 12V System 24V System 48V System 14.10 ± 0.12V 28.20 ± 0.24V 56.40 ± 0.48V Boost &...
  • Page 45 Date 801 313 9 Jan 2018 Data Logger Initialisation bug – if Data Logger is not attached when MSRx is first born in factory, the Timed & Alarm Record Pointers will not be initialised. Ver 4.6 This software looks for this condition and initialises the Pointers...
  • Page 46 Micha Solar MSRx Charge Controller User Operation Manual 9. Document Revision Issue Description Date Approved First issue 23 June 2017 Minor changes suggested by Phaesun 26 June 2017 Menu D Screen 10 Disable Function explanation adjusted 14 Nov 2017 Software 801313 Version 4.7...