Rutland FM1803-2
Installation & Operation
Document No: SM-146 Issue G 01.11.20
Marlec Engineering Co Ltd
7
Control Unit
The 1803 MPC2 control unit controls the operation of the FM1803-2 wind generator & protects
the battery bank from overcharge. Key features of the controller are:
•
The 3-phase transformer and full wave
bridge rectifier convert the raw generated 3
phase ac to dc at a level corresponding to
the battery voltage.
•
The microcontroller based electronic control
unit monitors the battery voltage, charge
current & temperature.
•
Low and High wind modes to optimise
performance depending on windspeed - at
pre-set levels the controller will switch the
generator between these modes.
•
When the battery voltage reaches a level
indicating fully charged, the controller
switches the generator to ‘stalled’ mode
causing the generator RPM to reduce to a slow idle, preventing further power being
generated into the battery bank. When the battery voltage falls to a lower pre-set limit,
the control unit will automatically switch back to ‘charge’ mode. Note: Unless otherwise
specified at the time of order, the limits will be set for lead acid batteries (upper limit
2.4v/cell & lower limit 2.08v/cell @ 25°C). If other types of battery are to be used or
other settings are required, contact Marlec for advice on factory setting or the interface
cable and PC app.
•
Remote NTC Temperature Sensor – Temperature compensation ensures that the
battery voltage switching points are automatically adjusted for ambient temperature to
maintain optimum battery performance. A sensor is supplied and can be connected at
the control unit with the tip positioned at the batteries. Temperature compensation is
applied only when the sensor is connected.
•
A push button switches between Run and Stall when held for >3 seconds. When in any
stalled mode the turbine runs at a slow idle preventing power from being produced.
When MANUAL SHUTDOWN is selected the LCD built-in backlight will be permanently
on to alert the user.
•
A digital LCD display shows battery voltage, charge current, generated power, operating
mode & warnings. The built-in backlight remains on for 1 minute when the button is
pressed once.
•
If a battery is not connected, the control unit will default to stall mode and will not be
operational.
