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ADVR-073 3
3.4 F+, F−: Connect generator field wires
F+ and F−are the positive and negative excitation
output terminals.
EXT.VR are used to connect the external voltage
adjustment rheostat, use a (1K ohm 1W)
Rheostat. Keep terminals shorted, when not
used.
Always use high quality wire AWG16 or 1.25mm2
85-degrees C, 600V to connection terminals A, B,
C, F+ and F−.
4. DIP SWITCH SETTING
4.1 SW-1 Frequency
DIP SW-1 switch ON, for use in 50 Hz
DIP SW-1 switch OFF, for use in 60 Hz
4.2 SW-2 Sensing Voltage Selection
DIP SW-2 switch ON, input voltage 170 to 260V
DIP SW-2 switch OFF, input voltage 340 to 520V
4.3 SW-3 Activate Over-Excitation Protection
DIP SW-3 switch ON the over Excitation
Protection is disabled. If over excitation occurs,
the O/E LED turns-on, but the ADVR will not
shutdown and protect.
DIP SW-3 switch OFF Over Excitation Protection
is activated. If over excitation occurs, the O/E
LED turns-on and the ADVR will shutdown
excitation.
5. System Protection
5.1 Under Frequency Protection (Roll off)
To prevent over excitation, or if the generator
runs at the wrong speed the ADVR activates the
under frequency protection and decreases field
excitation.
Dip switch 1 together with the U/F adjustment,
sets the Knee-Point frequency were this
activation takes place. This adjustment is already
factory preset.
When engine frequency falls under the
Knee-Point frequency setting, the U/F protection
indication LED turn on. However, when the
Generator frequency is higher than the
Knee-Point frequency the LED turns off.
5.2 Why Over Excitation Protection?
If you are using a standard AVR and you
overload the generator or the sensing wires get
disconnected (when using the auxiliary powered
winding) , the excitation voltage rapidly increase,
causing severe damage to the AVR or exciter.
The ADVR-053 has over excitation protection
shutdown that cuts excitation at once.
When over excitation protection is activated and
the excitation voltage exceeds 78 ±5VDC @220V
for over 5 seconds, the AVR immediately
shutdown the excitation output, leaving only the
residual voltage output and turning on the O/E
shutdown LED. To reset, the engine must come
to a complete stop for at least 10 seconds and
then restarted.
If over excitation protection is disabled, the
warning LED indication turn on, but the excitation
output is not disconnected.
6. ADJUSTMENT
6.1 VOLT: Voltage Adjustment
DIP SW-2 switch ON, input voltage 170 to 260V
DIP SW-2 switch OFF input voltage 340 to 520V
6.2 STAB: Stability Adjustment
careful adjust the STAB (Stability) adjustment,
improves the AVR and generator feedback time
to improve voltage stability.
6.3 U/F: Setting the under-frequency knee
point
DIP SW-1 set on OFF, set for 60Hz operation.
U/F adjustment range at 60Hz is from 50 to 60Hz
(Factory preset @ 55Hz).
DIP SW-1 set to ON, set for 50Hz operation.
U/F adjustment range at 50Hz is from 40 to 50Hz
(Factory preset @ 45Hz).
