Operating Sequence For The Controller - Doosan V158TI Operation & Maintenance Manual

(2) Connecting to batteries
Battery voltage is DC +24V and the battery is connected to the controller matching E (-) and F (+) with
the respective polarities of the battery. E (-) is connected to (-) of the battery and F (+) to (+) of the bat-
tery. Depending on cases, wiring can be done in a serial connection to the contact point a of MC and
the fuse (DC +24V/15 A) when connecting to system panels or generator control devices.
(3) Connecting to actuators
The actuator is also called governor and controls the amount of the fuel spray to the engine cylinder.
The controller is connected to the actuator attached on the engine by connecting two wires of the con-
troller terminal to A and B of the actuator regardless of their polarities. Wiring should be 18AWG
(105°C) or better and the outside should be wrapped by plastic tubes for insulation or insulated mesh
lines.
(4) Connecting to pick-up sensors
The pick-up sensor lets users know the engine speed and is connected to terminals C and D that can
receive signals of AC RMS 3V or higher. Wiring should be twisted or shielded cables connected to the
ground together with the terminal D. Gap between the pick-up sensor and the gear tooth should be
adjusted between 0.9 and 1.1 mm.
(5) Operating sequence for digital speed controller
• Power On/Off : It means that DC +24V power is either supplied or terminated through E (-) and F
• LCD On/Off

Operating sequence for the controller

Step 1) When DC +24V power is supplied to the controller, the controller starts to operate. It indi-
cates that power LED turns on and the power is being normally supplied.
Step 2) Inputs for speed trim, droop and idle functions are received.
Step 3) The controller checks the signals of the speed pick-up sensor.
Step 4) Actuator control signals are output together with designated values of other information for
crank, run and over speed functions according to the PID control values.
Step 5) The controller checks the operation condition and displays LED outputs and fault messages
according to the detected information.
DSC ON/OFF
BAT DC +24V
Droop, Idle
(+) of the battery matching with their respective polarities.
: It means to turn on or off the LCD display alone while DC +24V power is supplied
through E (-) and F (+) of the battery matching with their respective polarities and
the controller is in operation.
Controller
ON
Pin Name
OFF
Pick-Up
Actuator
LED
Output
Contact
Time Chart for Operation of the Controller
Over Speed
Crank Idle Run
Idle Run
Crank
Crank Idle Run
- 35 -
H
L
EDL11160006