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4
ADVR-12
3.1
DROOP Adjustment (DROOP)
When operating in parallel the AVR increases or
decreases its voltage output when phase current leads
or lag the voltage. The range of this increase or
decrease can be preset by the DROOP adjustment.
3.2
Voltage Adjustment (VOLT)
Generator rated output voltage adjustment. Must be in
agreement with the DIP Switch SW5 voltage range
setting.
180
260 Vac @ 220 Vac SW5 OFF
330
520 Vac @ 440 Vac SW5 ON
3.3
Under Frequency Adjustment (U/F)
When generator RPM falls below the knee point, the
under frequency protection circuit will activate and the
voltage and frequency begin to decrease in linear
descend.
Select frequency 50 Hz or 60 Hz according to the
generator in use.
3.4
Stability Adjustment (STAB)
Correct adjustment of STAB setting must be conducted
while the generator is operating without load. First
adjust the STAB potentiometer (POT) clockwise to the
point the voltage becomes unstable, then adjust it back
slightly, anti-clockwise (About 1/5 turn). This is point
the voltage just reaches the critical point (Knee point)
of stabilization, where the voltage is stable yet very
close to becoming unstable.
3.5
TRIM Adjustment (TRIM)
When terminals 2 & 3 are biased with a DC voltage (-5
+5V), the TRIM is used to adjust the influence this
DC has on the output voltage of the AVR. If the TRIM
(POT) is adjusted fully counter-clockwise the AVR DC
output will not be influenced by any bias voltage.
Conversely, if the TRIM is adjusted fully clockwise,
then any signal will produce the maximum 10% effect.
3.6
U/F DIP Adjustment (DIP)
When U/F protection is activated-, the voltage droop
ratio can be adjusted via the DIP VR. The adjustable
range is 3
10 V/Hz.
3.7
Over Excitation LED (O/E)
Indicator illuminates when the generator is in
Over-Excitation protection.
Set point 125 Vdc +/- 5% @ 220 Vac.
● DIP SW-3 switch ON, Over Excitation Protection
Disabled. If over excitation occurs, the O/E LED
turns on, but the AVR WILL NOT shutdown
excitation.
● DIP SW-3 switch OFF. Over Excitation Protection
activated. If over excitation occurs, the O/E LED
turns on and the AVR will shutdown excitation.
3.8
Under Frequency Protection LED (U/F)
Indicator illuminates when the generator is in U/F
Under-Frequency protection.
SECTION 4 : CONNECTION TERMINAL
TERMINAL
DESCRIPTION
CH GND
Ground
2
Analogue Voltage Input
3
4
Connect 4 & 7 for onboard voltage
adjustment.
Connect 10K ohm VR to 6a & 7 for
external voltage adjustment. (keep 4 &
7 Open)
5
Current Transformer (CT) 1A input
5a
Current Transformer (CT) 5A input
6
Current Transformer (CT) common
6a
Bridge selection common
7
Connect 4 & 7 for onboard voltage
adjustment.
Connect 10K ohm VR to 6a & 7 for
external voltage adjustment. (keep 4 &
7 open)
8
No use (Null)
9
Connect 9 & 6a for 3 phase sensing
connect.
Keep 9 & 6a open for single phase
sensing.
20
Single or Three phase sensing input
22
Single or Three phase sensing input
24
Three phase sensing input
Connect 22 & 24 for Single phase
sensing input.
26
Three phase power input
28
Single or Three phase power input
30
Single or Three phase power input
F1
Positive excitation output (+)
F2
Negative excitation output (-)
