YSD OT2115 Quick start guide

1
Manual of product installation and use
Datong Autosun
Power Control
Co.,LTD
Model OT2115
Engine electronic governor
Speed drive

2
目 录
SAFETY PRECAUTIONS..................................................................................... 1
1.OVERVIEW.....................................................................................................2
2. WORKING PRINCIPLE................................................................................. 4
2.1 DRIVER............................................................................................4
2.2 ACTUATOR.........................................................................................6
2.3 ANGULAR POSITION SENSOR................................................................ 6
3.MAIN TECHNICAL INDEX............................................................................. 6
3.1 DRIVER............................................................................................6
3.2 ACTUATOR.........................................................................................7
4、INSTALL.....................................................................................................7
4.1 POWER............................................................................................. 7
4.2 DRIVE INSTALLATION.........................................................................8
4.3 ACTUATOR INSTALLATION....................................................................8
4.4 ACTUATOR MOUNTING BRACKET............................................................. 9
4.5 LINKAGE DEVICE.............................................................................10
4.6 ELECTRICAL CONNECTION.................................................................. 11
4.7 SHIELDING WIRE.............................................................................12
4.8 ADJUSTMENT....................................................................................13
5、COMMON TROUBLESHOOTING GUIDE..........................................................13

1
Safety Precautions
Warning - Read the Instructions
Before installation, operation, commissioning or maintenance for this equipment, you should read the full
text of this manual, be familiar with all of the system components, operating procedures, safety
instructions, and related precautions. If you did not follow the requirements to perform operation and use,
may cause personal injury or property damage.
Warning - Overspeed Protection
The engine shall be equipped with a device being independent of the overspeed shutdown device to protect
against overspeed or damage to the engine resulting in personal injury or property damage.
Warning - Proper Use
Without the authorization of this product manufacturers and technical guidance, any unauthorized
modification of the system in machinery, electric or structure or use, may cause the damage to the product
itself, and even lead to personal injury or property damage.
Warning - Properly Shut Down
The electronic governor must be in the case of system power supply turned on to stop the engine according
the instructions; if illegal operation, directly turn off the power supply to carry out stop during the engine
operating, the engine is likely to arise uncontrolled serious accident, may cause property damage or
casualties. Solution to this problem is: linkage should contain a return spring, the spring force size should
be able to ensure that once the actuator power down, pulling the fuel delivery immediately to the minimum
position, making the engine shut down.
Warning - Battery Charge
Should ensure that the battery voltage of power supply of the product being within the specified range. If
the battery voltage do not meet requirements, this will result in the system not to work or run unstable.
Battery charging without delay should be given to ensure that the output voltage stability.
The Company reserves the right to modify any part of this manual. We guarantee that the information
provided in this manual is accurate and reliable, but unless otherwise expressly written commitment,
the Company assumes no responsibility.
Copyright ©2016 Autosun Company

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1.Overview
OT2115 driver is the drive device of the position actuator in the electronic governor of the
engine. The main function of the drive is to convert the 0 ~ 200mA of the speed controller output
to the position signal of the drive actuator electric signal. Actuator is the function of the drive
into the corner of the electrical signal into mechanical rotation angle. Among them, the amount
of mechanical rotation (rotation) is proportional to the input current of the driver.
Actuator can be equipped with OT1000, OT990, OT980, OT960, OT950, and other five models.
OT2115 drive outline see Figure 1-1, configuration see table 1-1. Actuator specifications see
table 1-2. The shape of the actuator is shown in Figure 1-2, figure 1-3, figure 1-4, figure 1-5,
figure 1-6.
Figure 1-1 drive outline

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Table TO2115 1-1 driver configuration
Drive type
Control signal
Output current (continuous / peak)
Part number（P/N）
OT2115
0～200mA
10A/20A
The driver needs a 24V independent DC power supply. The power supply should be able to
provide continuous 10A current and 20A peak current for 2 seconds.
Control the engine's stability and dynamic response is the controller, not the drive. Therefore, the
engine should be adjusted according to the instructions of the controller.
Table 1-2 actuator specifications
Corner motor
Model
corner
（deg）
Output
torque
（N.m）
Part
number
（P/N）
Weight
(kg)
Mass moment of inertia
(kg﹒㎡)
OT1000
75
60
OT990
75
27
OT980
75
16
14.0
OT960
75
8
5.0
OT950
75
4
Figure OT980 1-2 outline

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Figure OT960 1-3 outline
Actuator direction of rotation: face rotor output shaft, along the clockwise
direction of rotation and the engine fuel supply system to increase the fuel in
the same direction, namely: clockwise rotation to increase the amount of engine
fuel supply, the inverse clockwise rotation to reduce engine fuel supply.
2. working principle
2.1 Driver
Driver receives from the current signal of the speed controller, through position
feedback signal, position speed signal and correction of the actuator current
signal to the actuator sends a pulse width modulation (PWM) current (- 20A ~ +
20a) signal, working principle shown in Figure 2-1.

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schematic diagram of working principle of 2-1 driver
Figure 2-2 drive potentiometer location map
All the circuits of the driver are sealed, suitable for harsh temperature and
vibration environment.
Open the upper cover of the drive housing, you can see the three potentiometer, its location
is shown in figure 2-2.
One.offset potentiometer (OFFSET): for the 25 circle potentiometer, the main function is to
adjust the minimum (starting) position of the actuator according to the minimum input signal
of the controller.
Two. Span potentiometer (SPAN): 25 circle potentiometer, the main function is to adjust the
actuator to the maximum rotation angle position when the controller signal is changed from
the smallest to the maximum. Span adjustment range is about 40 degrees to 75 degrees (DEG).

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Span (SPAN) and offset (OFFSET) adjustments are related. Need to be repeated to
achieve the desired rotation angle range.
Three.Bandwidth potentiometer (ACT.BANDWIDTH): 1 turn potentiometer to adjusts the actuator
controller (2 Hz bandwidth to 9 Hz) signal changes in response speed.
2.2 Actuator
The angle range of the actuator design is 75 degrees (DEG), which controls the
fuel supply mechanism of the engine in the range. Actuator capable of bidirectional
(forward and reverse) output torque. Torque is proportional to the current provided
by the driver.
The actuator uses a sealed bearing and therefore is not maintained. Actuator position sensor
is installed at the end of the rotor, with the drive current loop and the body electrical
isolation.
An inertia wheel is installed on the output shaft of the actuator. The rotation
of the rotating wheel motor has a stable function and should not be removed.
2.3 Angular position sensor
Rotation angle position sensor and actuator rotor coaxial mounting. The sensor
is a linear HALL position sensor. Its power supply voltage is 5VDC. Feedback voltage
is about: 0 degree angle, 2VDC; 75 degree angle, 3VDC (refer to 0V voltage
measurement).
3.Main technical index
3.1 Driver
Operating temperature range: －40℃～＋70℃
Storage temperature range: －55℃～＋105℃
Humidity: 38℃，95％
Attack: GJB150.16-1986 Environmental test methods for military equipment (impact test)
Vibration: GJB150.16-1986 Environmental test methods for military equipment
(impact test)
Power Supply: 20 VDC～32 VDC（24 VDC 标称）
Output current: 10A Continued；20APeak value，Sustainable 2 seconds

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3.2 Actuator
Operating temperature range: －40℃～＋100℃
Storage temperature range: －55℃～＋125℃
Attack: GJB150.16-1986 Environmental test methods for military equipment (impact test)
Vibration: GJB150.16-1986 Environmental test methods for military equipment (impact test)
Protection level: IP65
output shaft: 0.625-36 sawtooth
4、Install
4.1 Power
The power supply connecting wire adopts the two core insulated and sheathed wire, and the ground
wire is connected with a single conductor insulated and sheathed wire. Power lines and ground
wires do not need to be shielded.
The method of power cable connection is shown in figure 3-1. Positive (lead) pin
-A 'J1, negative (lead) to connect -D' J1. Connect the power switch on the wire
connecting the positive electrode of the power supply (+). The ground wire is drawn
out from the negative electrode of the power supply, and is connected to a ground
wire terminal connected to the drive housing.
When the engine is shut down, the electric control system will control the actuator to keep
the minimum position. At this time, if the battery is not cut off, it may lead to the depletion
of battery energy. In order to prevent this kind of situation, the electric control system
should use switch or relay to cut off the power supply after parking. Any switch or relay should
be interlock with the engine start switch to prevent power off when the engine is switched
off.
Warning –speeding
Don't try to stop the engine running by shutting down the drive power supply. Do
not turn off the power supply on the drive when the machine is shut down. All
actuator position commands come from the controller, through the drive, and finally
to the actuator. When the engine is running, closing the power supply on the drive
may cause the engine to run over the engine.

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Figure 3-1 power line connection method
4.2 Drive installation
The temperature range of the drive is 40 DEG C 70. The driver is installed in a position that
is easy to adjust and connection, and should be installed as close as possible to the actuator
and the power supply battery so as to meet the requirement of the cable length. Do not expose
the drive to radiation heat sources such as exhaust pipes or turbocharger.
The driver will generate some heat, so the surface should be in full contact with the air
environment. The driver is fixed on the heat conductive plate with a thickness of no less than
3 and a minimum area of 0.4.
General drive can be directly installed in the control cabinet. Do not install the drive
directly on the engine. Drive installation position should be far away from high voltage or
strong current device and the device that produces electromagnetic interference. After the
initial adjustment is completed, the engine is in normal operation state, and the manual
operation is not needed.
4.3 Actuator installation
The actuator is mounted on the engine, and the actuator itself generates heat,
especially in the case of blocking or other requirements for maximum torque output.
Therefore, the maximum operating temperature of the actuator should not exceed
100.
The installation personnel should consider the thermal conductivity of the installation and
the installation position of the engine body temperature, if the installation position of the
engine body temperature is too high, should take appropriate measures to heat insulation. Under
the general conditions, the high thermal conductivity of aluminum and low carbon steel
materials should be used as a mounting bracket. Air free flow through the upper end of the
heat sink will be conducive to heat. Therefore, the heat sink should be kept clean so as to
improve the heat transfer. Do not spray paint or other materials on the heat sink, as this
will reduce the efficiency of heat transfer.