Micha Solar
MSRx Charge Controller
User Operation Manual
Page 10 of 46
Document: 802440-30.doc
Date: December 2020
www.micha.co.uk
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.
Menu 1 Screen 1 – System Voltage and System Temperature (Temp):
Single Battery System: Battery Voltage 1 (BV1) and Battery Temperature 1 (BT1)
BV1 connection is the Battery Voltage Sense Input on the MSRx PSU/Load PCB Assembly
BT1 connection is the Battery Temperature Sensor Input on the MSRx PSU/Load PCB Assembly
Dual Battery System:
Battery Voltage 1 & 2 (BV1, BV2) and Battery Temperature 1 & 2 (BT1, BT2)
BV1 connection is the Battery Voltage Sense Input on the MSRx PSU/Load PCB Assembly
BT1 connection is the Battery Temperature Sensor Input on the MSRx PSU/Load PCB Assembly
BV2 connection is the Auxiliary Voltage Input on an Analog Input Module
BT2 connection is the Auxiliary Temperature Sensor on an Analog Input Module
System Voltage may be BV1 or the Average, Highest or Lowest of BV1 and BV2 (see Menu L)
System Temperature may be BT1 or the Average, Highest or Lowest of BT1 and BT2 (see Menu L)
A faulty or disconnected Temperature Sensor will show “---.-C”
Menu 1 Screen 2 – Auxiliary Voltage:
Menu 1 Screen 2 will change depending on functions selected in Setting Menu L:
System Info:
Aux Volts: (N/A)
Screen
2
Menu L Screen 0: Analog Input Module 1 = Disable
System Info:
Aux Volts: 26.3V
Screen
2
Menu L Screen 0: Analog Input Module 1 = Enable
Menu L Screen 1: Voltage Input = Enable
Menu L Screen 4: Voltage Input = Aux Volts
BV1 Volts: 26.4V
BV2 Volts: 26.5V
Screen
2
Menu L Screen 0: Analog Input Module 1 = Enable
Menu L Screen 1: Voltage Input = Enable
Menu L Screen 4: Voltage Input = BV1/BV2 Av, Hi, Lo
Menu 1 Screen 3 – Auxiliary Temperature:
Menu 1 Screen 3 will change depending on functions selected in Setting Menu L:
System Info:
Aux Temp: (N/A)
Screen
3
Menu L Screen 0: Analog Input Module 1 = Disable
System Info:
Aux Temp: +23.4C
Screen
3
Menu L Screen 0: Analog Input Module 1 = Enable
Menu L Screen 2: Temperature Input = Enable
Menu L Screen 4: Temperature Input = Aux Temp
BT1 Temp: +23.5C
BT2 Temp: +23.6C
Screen
3
Menu L Screen 0: Analog Input Module 1 = Enable
Menu L Screen 2: Temperature Input = Enable
Menu L Screen 4: Temperature Input = BT1/BT2 Av, Hi, Lo
Menu 1 Screen 4 – Solar Irradiation:
Menu 1 Screen 4 will change depending on functions selected in Setting Menu L: