R230 is a Shunt excitation AVR for low voltage LEROY SOMER LSA 42.2, LSA 43.2, LSA44.2, LSA46.2, LSA47.2 three phase brushless alternators.

The regulator monitors the exciter excitation current as a function of the alternator output voltage. Very simple in design, the alternator with shunt excitation has no sustaining short-circuit capacity.
2.1 - Characteristics
- Voltage regulation: around ± 0.5%.
- Voltage supply/sensing range 85 to 139 V (50/60 Hz)
- Rapid response time (500 ms) for a transient voltage
variation amplitude of ± 20%
- Voltage setting P1
- Stability setting P2
.
- Power supply protected by 8 A fuse, slow-blow action
(tolerates 10 A for 10 s)
- Frequency: 50 Hz with ST3 jumper - 60 Hz without ST3
jumper
- Factory-set underspeed protection P3
.
2.2 - R230 AVR option
Potentiometer for remote voltage adjustment, 1000 Ohms / 0.5 W
min: adjustment range ± 5%.
- Remove the ST4 jumper.
Initial potentiometer settings
- P1potentiometer (AVR voltage adjustment): fully anti-clockwise.
- Remote voltage adjustment potentiometer: centre position.
Run the alternator at its rated speed. If the voltage does not
increase, the magnetic circuit should be remagnetized (see
section 2.3).
- Turn the AVR voltage adjustment potentiometer P1slowly
until the output voltage rated value is obtained.
- Adjust the stability setting using P2.
- Sealed potentiometer P3 is factory set at 48 Hz for 50 Hz and 58 Hz for 60 Hz