MarelliMotori MEC-20 Manuel Utilisateur page 26

8. BOARD TOPOLOGY
8.1. Terminals
P1
Power supply
P2
U
V Voltage sensing
W
A
Current sensing
B
+
Exciter field
-
6 Analogue signal input
8
P Connection of
Q external potentiometer
OUT Not available
GND GROUND
OB+ Connection with
OB- Varicomp board
8.2. Potentiometers
Coarse setup of generator voltage.
VOLT
Turn clockwise to increase voltage.
MIN MAX
Fine setup of generator voltage (±5% of the VOLT setting).
VFINE
Turn clockwise to increase voltage.
MIN MAX
Setup of the soft start ramp.
START
Turn clockwise to increase the ramp duration.
MIN MAX
Setup of the Corner Frequency.
FREQ
Turn clockwise to increase the operation frequency threshold.
MIN MAX
Setup of the Zero Volt frequency.
SLOPE
Turn clockwise to increase the slope of the V/f curve.
MIN MAX
Setup of the overexcitation threshold.
AMP
Turn clockwise to increase the limitation intervention threshold.
MIN
MAX
Setup of the droop.
PAR
Turn clockwise to increase droop.
MIN MAX
Setup of regulation stability.
STAB
Turn clockwise to increase the response speed.
MIN MAX
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