Service manual

3. Electrical Parts
3-23
3.3.4 Auto start unit (Automatic operation unit)
SG06026
SDG25S-6A7,45S∼100S-6A6
List of functions
Pin
No.
Line
color
Connection Function
1
※1
R/Y
(Y/R)
Manual-Auto selector switch
Power for auto start unit.
With No.1 terminal of auto start unit electrically
conducted, when remote start/stop switch (exterior
output terminal plate between A1-
A
2 terminals) is
switched ON, XO relay begins to function.
2 W
※2
Alternator R (L) terminal
Input alternator generating signal.
When generating signal is input from alternator R
(L) terminal, X2 relay functions and voltage is
applied to X2 terminal of PLC unit. When X2
terminal is electrically conducted, the interior
contact of Y3 terminal switches OFF to cut the
output to starter (safety) relay from No.8 terminal of
auto start unit to stop auto start cranking function.
3 W/R Controller No.2 terminal
Input engine trouble signal.
When engine trouble signal is inputted from
controller No.2 terminal, X6 relay begins to function
and voltage is applied to X6 terminal of PLC unit to
make the interior contact of Y3 terminal of the unit
OFF to cancel auto re-start function.
4 L/W Controller No.11 terminal
Output difficulty signal in starting.
At auto start-up, the interior contact of PLC unit Y3
terminal becomes ON, and in case that within 10
seconds after start signal is given to starter (safety)
relay, no voltage is applied to X2 terminal and auto
start cranking function will not be carried out
satisfactorily, make the interior contact of Y2 and Y3
terminals OFF once, and then repeat auto start
operation according to the specified time.
In case engine will not start even after three times
repetition of this operation, the interior contact of
PLC unit Y4 terminal becomes ON, output difficulty
signal is starting to controller No.11 terminal.
CONNECTOR