Service manual

3. Electrical Parts
3-16
SG06045E
3.3.2 Controller
SDG25S-6A7,45S∼100S-6A6(Emergency controller)
List of functions
Pin
No.
Line
color
Connection Function
1
※1
L/R
(Y/R)
※2
Solenoid (motor stopper) relay
No.1 terminal
During normal operation the interior contact is ON
between No.1 terminal and No.8 terminal.
When emergency stop device functions, the interior
contact will be OFF between No.1 terminal and
No.8 terminal, and it cuts the output to solenoid
(motor stopper) relay to perform emergency stop.
Three phase breaker (via diode)
2 W/R
Auto start unit No.3 terminal
During normal operation, the interior contact
between No.2 and No.9 terminal is OFF.
When emergency stop device functions in case of
engine failure, the contact between No.2 terminal
and No.9 terminal is ON, and voltage is added to
the shunt coil and makes the breaker OFF.
A
lso engine abnormal signal is sent to the auto start
unit No.3 terminal, and turn off Y3 terminal of
internal contact PLC unit and cancels the auto
restart function.
3 B Grounding
4 - NIL
5 L/Y
※3
Time relay No.5 (No.6) terminal
While electrically conducted, pre-heater lamp is ON.
When controller No.10 is electrically conducted,
voltage will be applied to time relay No.5 (No.6)
from No.5 terminal, and it ignites pre-heating lamp.
The pre-heating time will be controlled by time
relay.
6 W
※4
Alternator R (L) terminal
When voltage is applied from alternator R (L)
terminal, charging warning lamp goes off, and about
10 seconds later the circuit of abnormality detecting
oil pressure drop begins to function.