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ADVR-250
3
SECTION 3 : POTENTIOMETER ADJUSTMENT
0V, 110V
：
Power Supply
and Sensing Input
* Over Excitation Current Limiting (O/C)
When the excitation current is greater than or exceeds 5A the AVR will reduce the excitation output to limit the
excitation current. At this time the generator output voltage will be in a very unable state (the greater the load the
lower the voltage). Over current protection will not interrupt the excitation field output.
* LAM (Load Acceptance Module) Outline
When the generator experiences momentary increases in load (more 40% of generator capacity) voltage and
engine speed will decrease. The process of recovering voltage and engine speed will produce a situation where
output voltage and engine speed fluctuates. In order to reduce the level of volatility, after a load is added the
engine speed will slow, lowering the total power output of the generator and delaying recovery.
The low frequency knee point setting should be below a nominal setting for 2 Hz to cause the output voltage and
engine speed to have a smooth recovery.
The LAM function allows choice of reduction settings of 13% and 25%. If the generator has a fluid drive (hydro) it
is recommended not to use the LAM function.
E+, E-
：
Excitation Output
VOLT
：
Voltage Adjustment
STAB
：
Stability Adjustment
O/C LED
：
Over Excitation
Current
Limiting
Status
Indicator.
When over excitation current
limiting function is operating
(Excitation Current > 5A)
，
this
LED will light up.
U/F LED
：
Under Frequency
Protection Status Indicator.
1K ohm
：
External
VR
input, Must be
shorted with a
jumper when
not in use.
U/F function and LAM potentiometer
：
See SECTION 4 for more detail
110V
0V
E+
E-
1 KΩ
STAB
VOLT
U/F
O/C
0
1
2
3
4
5
6
7
8
9
ADVR-250
Figure 2
