4 SINCRO® is a brand of Soga Energy Team ITALY | sogaenergyteam.com | info.sincro@sogaenergyteam.com
ADJUSTMENTS
Adjusting elements of AVR BL4-U are described as the figure below. AVR BL4-U has two DIP-
Switches: Switch 1 to set the frequency, Switch 2 for remote voltage regulation.
FREQUENCY SELECTION
The frequency selection is done using Switch 1. Set this switch to “ON” for 50 Hz, to “OFF” for 60
Hz.
VOLTAGE ADJUSTMENT
The alternator output voltage is set at the factory, but it can be altered by adjustment of the V
potentiometer on the AVR BL4-U board, or by the external hand potentiometer. Set Switch 2 to “Std”
for the working without external hand potentiometer, set switch 2 to “Ext” for the working with
external hand potentiometer. In this case the external hand potentiometer (5 kohm/3W) has to be
fitted at the terminals Ext and Pot.
STABILITY ADJUSTMENT
The AVR BL4-U includes stability or damping circuit to provide good steady state and transient
performance of the alternator.
The correct setting can be found by running the alternator at no load and slowly turning the stability
ST anti-clockwise until the alternator voltage starts to become unstable.
The optimum or critically damped position is slightly clockwise from this point (i.e. where the
machine volts are stable but close to the unstable region).
Elements for adjustment on AVR BL4-U
To Next Page
Loading...