Rutland FM1803-2
Installation & Operation
Document No: SM-146 Issue D 14.03.08
Marlec Engineering Co Ltd
7
Control Unit
The 1803 MPC1 control unit controls the operation of the FM1803-2 wind
generator & protects the battery bank from overcharge.
The 3 phase transformer & 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 controller monitors the battery voltage, charge
current & temperature. At pre-set levels, the controller will switch the generator
between Low and High wind modes to ensure optimum performance.
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.
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 the manufacturer for advice.
When in ‘stalled’ mode, the system can be manually re-set to ‘charge’ mode by
pressing the reset button on the front panel.
Temperature compensation ensures that the battery voltage switching points are
automatically adjusted for ambient temperature to maintain optimum battery
performance.
A digital LCD display shows battery voltage, charge current, generated power,
operating mode & warnings. Coloured LEDs also indicate operating status &
warnings.
The on/off switch on the front panel allows the control unit to be switched off which
will select ‘stalled’ mode for installation / servicing, stalling the turbine to a slow
idle & preventing power being produced. In this mode the LCD display will be
blank.
If a battery is not connected, the control unit will default to stall mode.
There are 3 continuous operating modes:
Mode
Low/High LED Charge/Stall LED LCD Display
Charge Low Wind Green
Green
Charge Low Wind
Charge High Wind Red
Green
Charge High Wind
Stalled
Red
Red
Turbine Stalled
