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ADVR-12 3
3. DIP SWITCH ADJUSTMENT (SW)
KW
SW <90KW
90~500KW >500KW
1 OFF ON ON
2 OFF OFF ON
SW ON OFF
3 O/E Deactivated O/E Activated
4 50Hz 60Hz
5 440V 220V
ATTENTION
When 60Hz frequency setting is selected on a
50Hz generator, it could result in under voltage.
When 50Hz frequency setting in selected on a
60Hz generator, it could result in over excitation
current when stopping the generator and cause
sever damage to the generator or AVR.
After adjusting SW1 or 2, the STAB must be
recalibrated to ensure maximum performance.
All adjustment of SW must be conducted when
engine is not in operation.
4. ADJUSTMENT
4.1 VOLT
●Voltage setting adjusting the genset rated output
voltage.
●When SW5 is “OFF” (220V) adjustable range is
175 ~ 260VAC.
●When SW5is “ON” (440V) adjustable range is
350 ~ 520VAC.
●When terminal 7 & 4 are bridged together, volt
adjust is done only on the regulator VOLT pot. But
when using a external 10k volt pot connect to
terminals 7 & 6a and opening terminals 7 & 4
makes the pot on the regulator useless.
ATTENTION
AVR AC voltage readings are all average value.
4.2 STAB
●Adjust STAB fully clockwise, the generator voltage
will begin to fluctuate, whereas if adjust fully
counterclockwise the voltage becomes stable.
●The correct stability setting is at a knee point,
where the voltage is stable yet on the brink of
becoming unstable.
●If Stability is over adjusted, it can result in high
voltage fluctuation when load is connected.
4.3 U/F
Under frequency protection adjustment. When
generator frequency falls below the knee point, the
under frequency protection circuit will begin to
intervene and voltage and frequency begin to
decrease in linear descend. Coordinate with the DIP
switch SW4 frequency selection 50/60Hz.
When selecting 50Hz the adjustable range is from
40 to 51Hz and the factory presets at 47Hz.
When selecting 60Hz the adjustable range is from
50 to 61Hz and the factory presets at 57Hz.
4.4 U/F LED
When under frequency protection is activated, the
RED LED will light up.
4.5 DIP
When under frequency protection is activated, the
voltage droop ratio is adjusted via the DIP VR. The
adjustable range is 3 ~ 10 V/Hz.
4.6 DROOP
Droop adjustment. When paralleling, the AVR
compensate the input rating and voltage shifting
basis on load current, through internal circuit
calculation and increase or decrease the voltage.
When phase current lag the voltage, it decreases
original voltage setting and if the phase current lead
the voltage then it increases the original voltage
setting. The increase and decrease range can be
preset by the DROOP adjustment.
4.7 TRIM
Analogue voltage Input sensitivity. When terminal 2
and 3 is added with a DC input (0 ~ ±5V), the TRIM
is used to adjust the influence level from the DC
input to the rated voltage. If the TRIM potential (POT)
is adjusted fully counter-clockwise, and then the
additional signal will not cause any influence. On the
contrary if the TRIM is adjusted fully clockwise, then
the additional signal will produce a maximum effect.
4.8 O/E
The protection is enabled by selecting DIP SW 3 to
OFF position (Protection disabled when DIP SW 3
select to ON). The O/E voltage setting is at 125VDC
±5V. If generator excitation voltage exceeds the
setting the AVR will shutdown the excitation output
and illuminate the O/E LED. To reset the protection,
stop generator for 30 seconds before restart. The
higher the excitation voltage the faster the AVR
enables the protection from 0.1 ~ 20 seconds.
If O/E is disabled, (DIP SW 3 to OFF position) the
AVR does not shutdown the generator excitation
output but only illuminate the O/E LED.
