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EA350
3
2. WIRING
2.1 Exciter Field Power Circuit
● Connect AVR terminal “F+” to field “+”, connect
AVR terminal “F–” to the field “–”.
● See Figure 5~6 for typical connection diagram.
CAUTION !
The exciter field dc resistance must be 15 ohms or
greater and less than 100 ohms.
If the exciter field dc resistance is less than 15 ohms
and the full load field current does not exceed the
maximum continuous current rating of the controller,
a resistor of sufficient wattage must be added in
series with the field to increase the total resistance
to 15 ohms.
2.2 Sensing / Power Input Circuit
Input power and sensing is achieved through
terminals 3 and 4. The voltage input requirement of
the EA350 is 120 to 240 VAC.
See Figure 5~6.
2.3 Voltage Adjustment
The screwdriver adjustable potentiometer adjusts
the generator output voltage. Adjustment clockwise
increases the generator output voltage.
When using a remote voltage adjust rheostat,
remove the jumper wire across terminals 6 and 7
and install a 2000 ohm 1/2 watt (minimum) rheostat.
This will give ±10% voltage variation from the
nominal. (For ±5% voltage variation use a 1000 ohm
1/2 watt rheostat). See Figure 5~6.
2.4 Stability Adjustment
● System stability is the ability of the generator to
respond to load transients. Decreasing the
stability makes the generator less sluggish and
faster to respond to toad transients. If the stability
of the regulator is decreased too much, the
generator will tend to hunt under steady state
● Conditions the screwdriver adjustable potentiometer
adjusts the system stability Adjustment clockwise.
● Increases the stability. Increasing the stability
increases the response time of the generator.
Conversely, decreasing the stability decreases
the response time of the generator.
2.5 V/Hz Roll-Off Frequency Selection
● The roll off point is the frequency where the
generator voltage starts to decrease. This
reduces the Kilowatt load to the engine, which
allows the engine to recover in speed transient
condition. Use jumper to select 50 Hz or 60 Hz.
The screwdriver adjustable potentiometer sets
the roll-off frequency from 54~61 Hz in the 60 Hz
setting or from 45~51 Hz in the 50 Hz setting.
Figure 2
Jumper and Potentiometer Control Locations
S
TA
B
KUTAI ELECT
RONIC
V
OL
T
U/F
60
HZ
50
HZ
4
6
7
F-
F+
3
VOL
TAG
E REGULAT
OR
50/60Hz, 500
VA
O
UT
P
UT
: 36 Vd
c / 73Vdc 3.
5A
MODEL:
EA350
INPUT
: 85-135Vac
/ 190-2
40
Vac
DIP SW
FUSE 4A/250V
Rheo
stat
Jum
per
Frequency
Jum
per
ON
OFF
J1
Red
J2
