Huegli Tech InGovern Series User manual

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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InGovern Series
Electronic Engine Speed Governor
Instruction manual

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Doc. No.: HT-SGseries_MN_DE_30.01.2022
Version: 3.9
Edition: 30.01.2022
PC Software Version: 3.0.0.97
Firmware Version: 2.28
Hardware Version: E
HUEGLI TECH AG (LTD) Switzerland
Support Matrix
PC software version < 3.0.0.81
PC software version >= 3.0.0.81
Firmware
version
<2.23
Firmware
version
>=2.23

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Table of contents
1 Installation declaration (for an incomplete machine) ................................................. 5
2 General ........................................................................................................................... 6
2.1 Introduction ............................................................................................................................ 6
2.2 Safety instructions and Warnings ........................................................................................... 6
2.2.1 Overspeed protection ........................................................................................................ 7
2.2.2 Safety protection ............................................................................................................... 7
2.3 Guarantee terms and conditions ............................................................................................ 7
2.3.1 Correct use ........................................................................................................................ 7
2.3.2 Use of Accessories ............................................................................................................ 7
3 Installation and connection .......................................................................................... 8
3.1 General Features ................................................................................................................... 8
3.2 General information ............................................................................................................... 8
3.3 Connection terminals ........................................................................................................... 10
3.4 Electrical connection ............................................................................................................ 12
3.4.1 Fixed RPM, optional with load distribution or for parallel operation with the mains .......... 12
3.4.2 Variable RPM with external voltage input (SG-50/100/100H/200/300) ............................. 14
3.4.3 Variable RPM with external potentiometer (SG-50/100/200/300) ..................................... 15
3.4.4 Crank or Over speed relay (available on HT-SG300 only) ............................................... 16
3.4.5 RPM adjustment via digital signal (available on HT-SG100/200 only) .............................. 16
3.4.6 RPM adjustment via digital signal with Droop (available on HT-SG100/200 only) ............ 17
3.4.7 Droop Mode using potentiometer ( SG50/100/200/300) ................................................... 18
3.4.8 Droop Mode using external voltage input (SG50/100/100H/200/300) .............................. 18
3.4.9 Position Mode (available on HT-SG100/100H/200 only) .................................................. 20
3.5 Other Inputs(SG-50/100/100H/200/300) .......................................................................... 22
3.5.1 Idle ............................................................................................................................... 22
3.5.2 Gain .............................................................................................................................. 22
3.6 CAN BUS Connection(SG-50/100/100H/200/300) ............................................................... 22
3.7 Accessing the functions by keypad(SG-50/100/100H/200/300) ............................................ 23
4 Installation of PC software.......................................................................................... 25
5 Using the Speed Governor Configuration Software ................................................. 26
5.1 Main Screen......................................................................................................................... 26
5.1.1 Speed Related Parameters ............................................................................................. 27
5.1.2 Other Parameters ............................................................................................................ 27
5.1.3 Loading/Saving/Restoring Configuration settings ............................................................ 30
5.1.4 Viewing Configuration Settings File ................................................................................. 30

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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5.1.5 Password Protected Parameters ..................................................................................... 30
5.2 PID Parameters ................................................................................................................... 31
5.3 Droop ................................................................................................................................... 32
5.4 CAN Bus .............................................................................................................................. 33
5.4.1 Supported J1939 ECU CAN Bus Register ....................................................................... 33
5.4.2 Supported DST CAN Bus Register .................................................................................. 35
5.5 Speed Graph ....................................................................................................................... 36
6 Dimensions .................................................................................................................. 37
7 Starting the motor ....................................................................................................... 37
7.1 Before starting the motor with the InGovern, follow this procedure: ...................................... 37
7.2 Starting and motor tuning ..................................................................................................... 37
7.3 Optimisation of dynamic settings (Tuning) ........................................................................... 37
8 Configurable parameters, values in [ ] = factory settings ........................................ 38
9 Correction system faults ............................................................................................ 39
9.1 Motor does not start ............................................................................................................. 39
9.2 Motor does not run with the correct variable RPM ................................................................ 39
9.3 Over-speed during start process .......................................................................................... 39
9.4 Overcurrent during start and/or engine running process....................................................... 40
9.5 Engine unstable ................................................................................................................... 40
10 Technical Data ............................................................................................................. 41
10.1 Performance ........................................................................................................................ 41
10.2 Surroundings ....................................................................................................................... 41
10.3 Input/output parameters ....................................................................................................... 41
10.4 Norms/standards ................................................................................................................. 41
10.5 Reliability ............................................................................................................................. 41
10.6 Mass and weight .................................................................................................................. 41
10.7 Configuration parameters ..................................................................................................... 41

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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1 Installation declaration (for an incomplete machine)
Installation declaration
(Directive 2006/42/EC, Appendix II B)
The manufacturer: Huegli Tech Murgenthalstrasse 30 4900 Langenthal Switzerland
hereby declares that the incomplete machinery:
General description: InGovern Series
complies with the basic health and safety requirements of machinery directive 2006/42/EC Appendix I.
The special technical documents in compliance with Appendix VII part B have been produced.
The incomplete machine corresponds with the following other EC directives:
Low tension directive 2006/95/EC
The following harmonised norms were applied:
EN ISO 12100-1; EN ISO 12100-2; EN ISO 14121-1;
Authorised representative for creation of the technical documents:
M. Gutierrez Murgenthalstrasse 30 4900 Langenthal
The special technical documents are transmitted in electronic form as required by individual state offices.
Operating the incomplete machine is not permitted until the incomplete machine is built into a ma-
chine that conforms to the provisions of the machinery directive and an EC conformity declaration
in compliance with Appendix II A is provided.
Langenthal 01.05.2015 Huegli Tech AG,
Dr. Marcos Gutierrez Huegli, Daniel
Technical Manager President
Gas Systems

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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2 General
2.1 Introduction
The InGovern Series electronic engine speed governor consist of models suitable for both diesel and gas
engines. Its digital processing capability not only provides flexibility in configuration but also allows CAN
J1939 data exchange with many modern controllers. The unit will internally convert the signal from a
standard inductive flywheel pick-up to an RPM value, display it on the 4-digit LED display and send it as a
standard J1939 value to a connected controller.
The unit’s desired speed can also be set by standard J1939 SpeedUp/SpeedDown commands over the
CAN Bus connection as well as by a conventional 0-10V synchronizing and load sharing signal input. This
J1939 integration simplifies the wiring thus saving installation time and also allows implementation of more
sophisticated controller features.
InGovern smart speed controllers are fully potted for sealing and vibration resistance and suitable for
mounting on or close to a running engine. They provide precise (<0.25%) isochronous rotational speed
control.
The unit is supplied pre-configured and once the number of flywheel teeth is input (1 x press of [Fn] button
then [+] or [-] until the correct value is displayed) then the engine will run. All parameters are stored in non-
volatile memory.
Fine tuning of the main PID loop and other common features can be done using the same 3 buttons on the
front panel. The supplied PC software (which connects via a standard USB cable – no dongle required)
provides an overview of all settings, allows user-friendly PID adjustment on a running engine and allows
access to secondary parameters including a second PID loop. The final configuration can be saved and
downloaded to other similar units for multiple engine applications or for series production.
2.2 Safety instructions and Warnings
Before installing and starting the device, please read the operating instructions. These contain important
notes for safety and use.
No liability can be accepted for damage arising from failure to follow the instructions or any inappropriate
use.
The governor may only be used for the manner of operation prescribed in the operating instructions and
only in connection with third-party devices and components recommended or installed by us or software
supplied by us. Any other use shall be considered inappropriate use and will result in the voiding of all liabil-
ity and warranty claims against the manufacturer.
Interventions and alterations that influence the safety technology and the functionality of the governor may
be carried out only by the manufacturer. Fault-free and safe operation is conditional upon competent
transport, assembly, and installation as well as qualified use and correct maintenance.
All relevant accident prevention regulations and other generally recognised technical safety and health and
safety at work rules are to be observed. Fault-free functioning of the machinery and its peripheral compo-
nents is only guaranteed with original accessory parts and spare parts.
The InGovern engine speed governor is robust enough to be placed in a control cabinet with other operat-
ing control devices or installed on the motor. If water, mist, or condensation can come into contact with the
controller, it should be mounted vertically, allowing the liquid to flow away from the controller. Extremes of
heat should be avoided.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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2.2.1 Overspeed protection
IMPORTANT
An overspeed shut down mechanism must be installed separately from
the control system as a safety measure, to prevent motor faults that
may result in damage or injury to machinery or persons.
A secondary shut down device (fuel valve) must be installed.
2.2.2 Safety protection
IMPORTANT
Protective Earth (PE) must be connected with Battery Minus
terminal always.
2.3 Guarantee terms and conditions
2.3.1 Correct use
The device is intended for exclusive use under the conditions described in the "Technical Data" rubric. Oth-
er uses are potentially dangerous. Huegli-Tech AG cannot accept liability for damage which results from
incorrect use or application other than that for which it was intended.
2.3.2 Use of Accessories
Accessory parts may be installed or added only when they have been explicitly authorised by Huegli Tech
AG. Any claims under guarantee, warranty or product liability shall be void if other parts are used.
The general guaranteed terms and conditions of Huegli Tech AG shall apply.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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3 Installation and connection
3.1 General Features
Governor Type/
Features
SG50 SG100 SG100H SG200 SG300
Actuator Driver Type Spring
Loaded
Spring
Loaded Spring Less Spring
Loaded
Spring
Loaded
Overspeed Setting 4000rpm
Fixed
Speed &Fuel Ramp 1sec
Fixed
Start Fuel and Fuel limit 100%
Fixed
Speed2 Selection
Speed3 Selection
Variable Speed using POT
Variable Speed using external
Input: 0-10VDC
Actuator Control Frequency
Selection 3.9kHz Fixed
Over Speed &
Crank Termination Relay Output
Acceleration and Deceleration be-
tween speed selection
Variable speed using
Binary Input
Position Mode
3.2 General information
The magnetic RPM sensor cable should be shielded to guarantee that no electromagnetic interference can
reach the engine speed governor. The shield should be on-sided on the battery negative.
To maintain the correct distance between the flywheel and the magnetic RPM sensor, the sensor must be
rotated in until the flywheel clicks and then rotated out again for ¾ of a rotation. This achieves the correct
spacing between flywheel and sensor. To be able to start the motor, the sensor must generate at least 1V
AC RMS during the start.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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SG-50/100/200
SG-100H
Cross-section of the battery and actuator cable at terminals L, M, J and K:
1.5 mm2 for 24 VDC or
2.5 mm2 for 12 VDC

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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IMPORTANT
The pick-up must be mounted so as to sense the teeth of a full
gear. The flywheel ring-gear is suitable.
Note: any missing teeth will negatively affect the pick-up signal.
For longer cables (>5m) the cable cross-section is to be increased appropriately to keep the voltage drop
low.
Battery positive (+) input, connection M, should be fused 10 A.
The governor should be installed such that the housing has connection with the chassis of the con-
trol cabinet.
The cable of the actuator must be shielded along its entire length.
The cable of the magnetic engine speed sensor must be shielded along its entire length.
The cable of the variable RPM speed input can be up to 5m long. For longer cables, a shielded ca-
ble must be used.
The shielding must always be grounded such that it does not come into contact with the chassis of
the machine. This is to prevent stray signals from entering the governor and causing interference.
The shield must be grounded at one end.
Important: The InGovern Series is equipped with overcurrent protection on the (Terminal J & K) output to
the actuator. Please note that even through overcurrent protection is in place, repeatedly subjecting the
actuator output to overcurrent or short circuit condition can still result in permanent damage to the product.
Overcurrent protection is activated when the digital display shows = = = =.
3.3 Connection terminals
SG50/100/200
Connection
Terminal
Description
Definition
A
SPEED2 Speed selection 2
B
GND Ground/chassis
C
SPEED3 Speed selection 3
D +5VDC 5VDC Supply
(Feedback sensor)
E
GND Ground
F
IDLE Idle speed selection
G
Gain PID selection set A or B
H EXT SPEED Load Distribution /
Synchronization
I
GND Ground

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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SG-100H
Connection
Terminal
Description
Definition
A
SPEED2 Speed selection 2
B
GND Ground/chassis
C
FEED-BK Actuator feedback
D
+5VDC 5VDC Supply
(Feedback sensor)
E
GND Ground
F
IDLE Idle speed selection
G
Gain PID selection set A or B
H EXT SPEED Load Distribution /
Synchronization
I
GND Ground
SG-50/100/100H/200/300
Connection
Terminal
Description
Definition
J
Actuator + Actuator drive supply +ve
K
Actuator - Actuator drive supply -ve
L
Battery - System Power supply -ve
M
Battery + System Power supply +ve
N
Pickup - Pickup sensor -ve
O
Pickup + Pickup sensor +ve
P
CAN low CAN bus LOW
Q
CAN high CAN bus HIGH
R
DROOP DROOP active low

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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SG-300
Connection
Terminal
Description
Definition
A
N. O Normally open contact
B COM Common contact of
relay output
C
SPEED3 Speed selection 3
D
+5VDC 5VDC Supply
(Feedback sensor)
E
GND Ground
F
IDLE Idle speed selection
G
Gain PID selection set A or B
H EXT SPEED Load Distribution /
Synchronization
I
GND Ground
3.4 Electrical connection
The InGovern Series has a range of different connection options for various applications.
The following describes the applications and relevant connection configurations
3.4.1 Fixed RPM, optional with load distribution or for parallel operation with the mains
With this application, up to three fixed RPM speeds can be selected by wiring in inputs SPEED2(A) and
SPEED3(C). The RPM speed can be set using the HT Speed Governor Configuration software and the
selected speed will be highlighted in green in the software.
Speed2
Input
Speed3*
Input
Active Speed
SG
-
50
SG
-
100
SG
-
100
H
SG
-
200
SG
-
300
Open Open Speed1 Speed1 Speed1 Speed1 Speed1
Close Open Speed1 Speed2 Speed2 Speed2 Speed1
Open Close Speed1 Speed3 Speed1 Speed1 Speed3
Close Close Speed1 Speed3 Speed1 Speed2 Speed3
*Speed3 not applicable for SG100H

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Synchronization
SG-100/SG-200* SG-300
*Note: Speed3 is not available on SG200 & SG100H
If a load distribution and/or synchronisation/load control (for parallel operation with the mains) is additionally
required, this can be achieved by wiring in the input EXT SPEED.
Here a signal of 0 – 10 V DC (zero point = Bias voltage) is required. The InGovern Series can work on both
negative or positive principle depends on the configuration. The Sync/Load Sharing functions must be acti-
vated using the HT Speed Governor Configuration software.
Example
1. Negative speed regulation
Input V
oltage
(Ext Speed)
Bias Voltage
Full Scale voltage
Requested Speed
0.0V 5.0V 10.0V 1560rpm
5.0V 5.0V 10.0V 1500rpm
10.0V 5.0V 10.0V 1440rpm

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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2. Positive speed regulation
Input Voltage
(Ext Speed)
Bias Voltage
Full Scale voltage
Requested Speed
0.0V 0.0V 10.0V 1440rpm
5.0V 0.0V 10.0V 1500rpm
10.0V 0.0V 10.0V 1560rpm
Note: This option only available on Firmware version>=2.25 and PC software >=3.0.0.81
3.4.2 Variable RPM with external voltage input (SG-50/100/100H/200/300)
Example: If for Speed Trim DS 1500 RPM and for Speed Trim FS 1799 RPM are required, these settings
can be achieved variably with the external potentiometer or with the 0-10Vdc input.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Speed Trim with 0-10Vdc input
SG
-
100/200
SG
-
300
SG
-
100H
3.4.3 Variable RPM with external potentiometer (SG-50/100/200/300)
If the motor must be run with a variable Speed setting, this can be achieved with an external potentiometer
(5kOhm) via Speed3 input or by a 0-10V voltage input via the Ext. Speed. This is to be connected accord-
ing to the following diagram.
Variable RPM using external 5K Ohms potentiometer
SG-100/200 SG-300
The External Speed Trim function must be activated in the HT Speed Governor Configuration software with
the right input type chosen. In addition, the Speed Trim DS and Speed Trim FS parameters of the desired
values can also be set.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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3.4.4 Crank or Over speed relay (available on HT-SG300 only)
Through the Configuration Software, you can select which event (Overspeed or Crank Termination) occur-
rence to turn on (energise) the relay located at terminal A & B. The relay will be turned off (de-energise)
when the engine comes to a complete halt (speed detected = 0 rpm).
3.4.5 RPM adjustment via digital signal (available on HT-SG100/200 only)
If the speed setting is required to be set via a digital signal, this is also possible with the InGovern Series.
This may be necessary during parallel operation with the mains if the motor control only delivers digital
signals for synchronisation and/or load control. The Binary Speed Up Down function in the Speed Governor
Configuration software must be activated.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Speed2
Input
Speed3
Input
Bin Speed Rate Up
(milliseconds)
Bin Speed Rate Down
(milliseconds)
Requested Speed
(rpm)
Open Open 200 300 No Change in Requested
speed
Close Open 200 300 Requested speed + 1 for
every 200 milliseconds
Open Close 200 300 Requested speed -1 for
every 300 milliseconds
Close Close 200 300 No Change in Requested
speed
3.4.6 RPM adjustment via digital signal with Droop (available on HT-SG100/200 only)
This feature necessary during parallel operation with the mains if the motor control only delivers digital sig-
nals for synchronisation and/or load control. The Binary Speed Up Down function in the Speed Governor
Configuration software must be activated and droop input must be connected.

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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Speed2
Input
Speed3
Input
Bin Speed
Rate Up
(milliseconds)
Bin Speed
Rate Down
(milliseconds)
Speed Change
(rpm)
Requested
Speed
Open Open 200 300
X
= Requested speed
Requested
Speed = X + (Droop% of X)
Close Open 200 300
X
=(Requested speed + 1)/200ms
Open Close 200 300
X
=(Requested speed - 1)/300ms
Close Close 200 300
X
= Requested speed
3.4.7 Droop Mode using potentiometer (SG50/100/200/300)
Droop is for load sharing purpose. Droop function reduces the reference speed as load increases. It allows
the engine to run at lower speed when the load increases and at rated speed at no load. Droop mode can
be enabled on the InGovern series by Terminal R (Droop) to GND (Terminal I).
Depending on the software configuration, the requested speed can be change via a 5k ohms
potentiometer.
3.4.8 Droop Mode using external voltage input (SG50/100/100H/200/300)
Depending on the software configuration, the requested speed can be change via the EXT Speed input.
Software configuration related to Droop can be found in section 5.3

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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SG-50/100/200 SG-300
SG-100H

InGovern Series
Electronic Engine Speed Governor
Identification: HT-InGovern Series-MN-EN-V3.9 Version: 3.9 Operating Instructions
© HUEGLI TECH, protection endorsement in accordance with ISO 16016 standards Transmission and/or copying of this document, or utilization or communication of its
contents other than for its authorized purpose are forbidden, insofar as permission has not been expressly granted. Violators will be prosecuted. All patent and design
rights reserved.
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3.4.9 Position Mode (available on HT-SG100/100H/200 only)
The InGovern series provides a special function named position mode. When it uses, it allows the HT-
InGovern Series to work like an electronic throttle control. To use this function, an actuator with feedback
sensor is required. Huegli Tech’s very own HT-TM2200 Actuator supports this function with its build in
feedback sensor. For use with GAC actuators, Version ….-F is required. The following table shows how
wiring connection between the actuators and the InGovern Series should be:
Terminal
Description
HT
-
TM2200
Actuator
Wiring Color
GAC
Actuator
Wiring Color
Comments
D +5VDC Red Brown Sensor Power Supply
E GND Black Green Sensor Ground
C SPEED3 Yellow White Feedback Signal
The wiring for the position mode should look like the below picture:
=>SPEED2 needs to be activated for position mode to be activated.
It supports for two actuator types
This manual suits for next models
5
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