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G OVERNORS

GOVERNING SDG500 Series A MERICA

SYSTEM Smart Digital Governor C ORP.

Purpose

The purpose of this manual is to provide the necessary information for installing, wiring, configuring and troubleshooting the
SDG 500 Series (Smart Digital Governor). The target audience for this manual is OEMs, however OEMs should feel free
to copy the needed information from this manual into their application service manuals.

This version of this manual applies to all SDG500 Series models. There are four variations of the SDG500 Series:

TABLE 1.
Recommended Cable Mating
Model Description Pins
Connection
SDG510 Deutsch connector DT06-12SA & W12S 0462-201-16141
SDG511 Molex connector 0015975121 0457501111

SDG512 Deutsch connector w/ Gain Adjustment DT06-12SA & W12S 0462-201-16141

SDG513 Molex connector w/ Gain Adjustment 0015975121 0457501111

Intended Application
The SDG 500 Series (Smart Digital Governor) is designed to regulate engine speed on diesel and gas/gasoline reciprocating
engines. The SDG 500 Series (Smart Digital Governor) is a suitable replacement for any mechanical system that needs
more flexibility, precision or control in governing speed. The SDG 500 Series is an integral part of a closed loop control.
When connected to an electric actuator and supplied with a magnetic speed sensor signal, the governor will direct the
engine to the desired speed setting. The SDG 500 Series (Smart Digital Governor) is designed for industrial applications
ranging from generators and mechanical drives to pumps and compressors.

Compatible Products
Actuators
All GAC actuators, except ACB2001*
* Connections to actuator may vary. Consult factory for compatibility.

Mag Pickups
All GAC magnetic pickups

Governors America Corporation 720 Silver Street Agawam, MA 01001

phone: 413.786.5600 fax: 413.789.7736
www.governors-america.com
info@governors-america.com

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Introduction
The SDG 500 Series (Smart Digital Governor) is a solid state microprocessor based speed control unit that offers precise
(+/- 0.25%) isochronous speed control with fast response to transient load changes. Designed for high reliability and ruggedly
built, the SDG 500 Series is hard potted to withstand the harsh engine environment.

The factory standard SDG500 Series is pre-programmed to OEM’s specifications. The SDG510 and SDG511 have no
end user modifiable settings. The SDG512 and SDG513 are equipped with a single turn gain trim potentiometer for field
adjustments.

If needed, configuration and tuning of the SDG500 Series can be accomplished by the OEM via GAC’s configuration software.
The software allows users to save the current configurations and data to disk or file. Saved settings can be utilized for
configuring multiple units.

Installation

1.0 Tools Required

Hardware & Tools Needed for Mounting
Two M-4 Screws
Screwdriver and Drill
Wire Stripper
Hand Crimping Tool

1.1 Included with the SDG

SDG 500 Series (Smart Digital Governor)

1.2 Supplies Needed

16 and 20 AWG Wire for Cable Harness (length amount based on need)
Bypass Cable Connector (see TABLE 1. for recommended connector)

1.3 Optional
USB/Serial Adapter

1.4 Software Operating Requirements

IBM compatible PC, 486DX2 or faster (100 MHz or higher microprocessor is recommended)
Microsoft Windows 98 or later Operating System
One available RS-232 serial port or USB Port (optional)

2.0 Mounting the SDG

This document is subject to change without notice.

Caution: None of GAC products are flight certified controls including this item.


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BEFORE BEGINNING INSTALLATION
Disconnect all battery power to the engine. Make sure the engine cannot operate during installation. Follow all safety warn-
ings of the machine manufacturer. Read and follow instructions carefully.

Please read the following instructions and visually inspect this product for damage from shipping before installing. It is your responsibility
to have a qualified person install this unit and make sure it conforms to local codes.

Locate the SDG Series control a distance from extreme heat, wires or coils. Operating temperature range is from -40º to
85º C (-40º to 185ºF).

See DIAGRAM 1 & 2. (for the SDG510 & SDG512) and DIAGRAM 2. (for the SDG511 & SDG513).

1. To mount the SDG to a panel, drill 2 (4.7mm dia / Ø.184 drill size) holes for mounting screws. Place module in front
of the panel aligning with the pre-drilled holes. Secure the module in place with two M-4 screws.

44.5
DIAGRAM 1. 1.751
MOUNTING FOR SDG510 & SDG512
22.3
Deutsch connector .878

TOP VIEW 4.7

2X Ø .184

52.1
2.052
cable length 26.1
2X 1.026
approximately 2,000 mm

88.9 SIDE VIEW

3.500

101.7
4.004

DIAGRAM 2.
22.3
MOUNTING FOR SDG511 & SDG513 .878
Molex connector
TOP VIEW 4.7
2X Ø .184

52.1
2.052
26.1
cable length 2X 1.026
approximately 2,000 mm
88.9
3.500 SIDE VIEW

101.7
4.004

This document is subject to change without notice.

Caution: None of GAC products are flight certified controls including this item.


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BEFORE BEGINNING INSTALLATION

Disconnect all electrical power to the machine. Make sure the machine cannot operate during installation. Follow all safety
warnings of the machine manufacturer. Read and follow instructions carefully.

Please read the following instructions and visually inspect this product for damage from shipping before installing. It is your responsibility
to have a qualified person install this unit and make sure it conforms to local codes.

3.0 Wiring the SDG

The SDG 500 Series control has an operating range of 10 to 32 VDC with nominal voltage range of 12 or 24 VDC.

1. Use a hand crimping tool to connect wires to the recommended cable connector (see TABLE 2.).

TABLE 2.
SDG510 and SDG512 SDG511 and SDG513
use the below listed DIAGRAMS and TABLES use the below listed DIAGRAMS and TABLES
General Wiring Instructions General Wiring Instructions
DIAGRAM 3. DIAGRAM 4.
TABLE 3 & 5. TABLE 4 & 5.
Deutsch Cable Connector DT06-12SA & W12S Molex Cable Connector 0015975121
Deutsch Pins 0462-201-16141 Molex Pins 0457501111

GENERAL WIRING INSTRUCTIONS

1. Connector Pins 4 & 6 are reserved for RS-232 communication.

2. For specific wiring instructions on Connector Pins 2 & 3 for the Deutsch & Molex Cable Connector see
TABLE 5.

3. Battery connections to Connector Pins 1 & 5 for both the Deutsch & Molex Cable Connector should be
16AWG (18mm2 ) or larger. Long cables require an increased wire size to minimize voltage drops.

4. Battery positive(+) input to Connector Pin 1 for the Deutsch & Molex Cable Connector should be fused for
15A.

5. The Magnetic Speed Sensor connections to Connector Pin 11 on the SDG510 & SDG512 and to Connector
Pin 8 on the SDG511 & SDG513 must be twisted and/or shielded for their entire length. The speed sensor
cable shield should be connected to ground.

6. The shield should be insulated to insure that no other part of the comes in contact with engine ground, otherwise
stray signals may be introduced into the SDG500 Series causing erratic operation.

7. Connect the GAC Standard Two Wire Actuator Connector to the connector on the actuator.

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DIAGRAM 3.
WIRING PIN OUT SDG510 & SDG512 15 AMP
FUSE
DEUTSCH CABLE CONNECTOR
SPEED Released
12/24 VDC SELECT
Released

1 2 3 4 5 6
12 11 10 9 8 7

12/24 VDC
NC NC

MAGNETIC
PICK-UP
10K
POT

NC

LSS 0-5 VDC IN

TABLE 3.

Duetsch Connector SDG510 and SDG512

Connector Pin # Description Comment Recommended Wiring
1 +12 / 24 VDC Input Power Supplies power. 16 AWG
2 Speed Select 1 See TABLE 3. for Speed Select Settings 20 AWG
3 Speed Select 2 See TABLE 3. for Speed Select Settings 20 AWG
4 Reserved Reserved R
5 Input Power Ground Ground for the 12 / 24 VDC Input Power 16 AWG
6 Reserved Reserved R
7 No Connection No Connection NC
8 0-5 VDC Input Input for 10K Potentiometer for Variable Speed Control 20 AWG
9 No Connection No Connection NC
10 0-5 VDC Input Input for communication of LSS 20 AWG
11 MPU + MPU speed signal input Shielded/Twisted Pair
12 No Connection No Connection NC

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DIAGRAM 4.
WIRING PIN OUT SDG511 & SDG513 15 AMP
MOLEX CABLE CONNECTOR FUSE

SPEED
12/24 VDC SELECT

Released

Released

1 2 3 4 5 6

7 8 9 10 11 12

NC NC

MAGNETIC
PICK-UP
10K
POT

NC

LSS 0-5 VDC IN

TABLE 4.

Molex Cable Connector SDG511 and SDG513

Connector Pin # Description Comment Recommended Wire
1 +12 / 24 VDC Input Power Supplies power. 16 AWG
2 Speed Select 1 See TABLE 3 for Speed Select Settings 20 AWG
3 Speed Select 2 See TABLE 3 for Speed Select Settings 20 AWG
4 Reserved Reserved Reserved
5 Input Power Ground Ground for the 12 / 24 VDC Input Power 16 AWG
6 Reserved Reserved Reserved
7 No Connection No Connection NC
8 MPU + MPU speed signal input Shielded/Twisted Pair
9 0-5 VDC Input Input for communication of LSS 20 AWG
10 No Connection No Connection NC
11 0-5 VDC Input Input for 10K Potentiometer for Variable Speed Control 20 AWG
12 No Connection No Connection NC

This document is subject to change without notice.

Caution: None of GAC products are flight certified controls including this item.


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TABLE 5.
All SDG500 Series
Speed Select
Connector Pin 2 Connector Pin 3
No Connect No Connect Variable Speed*
No Connect Battery - Fixed Speed 1
Battery - No Connect Fixed Speed 2
Battery - Battery - Fixed Speed 3

*A 10K Variable Speed Potentiometer needs to be connected to activate.

On the SDG510 & SDG512 connect to Pin 8 and
on SDG511 & SDG513 connect to Pin 11. Refer to DIAGRAMS 3 & 4 and TABLES 1 & 2 for complete instructions.

5.0 Connecting the SDG to the PC for Configuration

1. Connect the Bypass Cable Harness between the Mounted Connector on the top side of the SDG and the
GAC SDG 500 Series Engine Cable Harness.
2. Connect the DB9 connector on the Bypass Cable Harness to your PC. Optional: Connect using an USB/
Serial Adapter.
3. (SDG512 & SDG513 only) Set gain trim adjustment to mid-point.
4. Power ON the unit.

6.0 Installing SDG Software

The software for the SDG does not affect the registry rights of your operating system and therefore is easy to install.
Simply copy the file SDG.exe to the desired location and double click to execute.

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6.1 Establishing a Connection

1. Double click on the SDG_DIAGNOSTIC.exe file.

2. Select Connections from the drop down menu and choose Configure. The Connection Manager window
should appear. (see Figure 1. )
3. Click on to highlight the CommPort used in the list box and click on to highlight SDG51X in the Device list box.

Figure 1.

4. Define connection name. (OPTIONAL)

5. Security Level and Password functions are not available at this point.
6. Single click on the Connect button to connect. The Check Status window should appear, click OK to accept.
Your connection with your user defined name should appear in the Connection box on the Connection Manager.
7. Exit the Connection Manager by single clicking on the top right Cancel Option Box of the window.

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7.0 Configuring Grid Desktop

1. To open the Grid Configuration window, select Configuration from the drop down menu and choose Grid.
2. Choose the option button to the left of Enable to allow for the meter and the configurable parameter windows to
snap to a grid. (See Figure 2.)
3. Select a color option.
4. Select a grid size. This will configure the distance from point to point in pixels.
5. Click OK to save/exit the Grid Configuration window.

Figure 2.

8.0 Organizing the Meters and Configurable Parameters on the Grid Desktop

The meters provide real-time metering that updates approximately every half-second. Meter windows are read only. The
configurable parameters windows are editable.

1. To open the Meter Manager, select Meters from the drop down menu and choose Configure. (see Figure 3.)
2. Click to highlight the connection that you are currently using.
3. Click on the Meters Tab to select meters. Double click on a meter or single click to highlight a meter and click
the Add Meter button to add a meter listed in the scroll box on to the grid. Once placed on the grid, the meter
windows can be arranged on your desktop by clicking to hold and dragging the window to best fit your needs.

Figure 3.

4. Repeat the above process to place the Configurable Parameters on the grid and for the Calibration.
5. Exit the Meter Manager by single clicking on the top right Cancel Option Box of the window. (Please note that
this does not save the settings. For saving the setting, please refer to SECTIONS 9.0 and 9.1)
This document is subject to change without notice.
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8.1 Description of Configurable Parameters
Setting and values are based on number of teeth on the flywheel and therefore ranges may vary.

Critical Configurable Your

Description
Setting Parameters Settings

ADC max Max RPM value from the SDG analog to digital converter. Read only

ADC min Min RPM value from the SDG analog to digital converter. Read only
Build Date
Read only

Crank
! Termination
RPM set point for crank termination. When the engine RPM exceeds the crank termination set point, the SDG switches
from start up cycle to PID loop control. This parameter must be set higher than the maximum cranking RPM.
yes

! Derivative
PID. Derivative mode is a breaking action to the controller response as the process variable approaches the set point. yes

Droop 1

Droop 2

Droop 3
Not Activated
Droop Variable
Speed

External Gain

Fixed Speed 1 Desired RPM set point when the speed select input is set to 1. yes
Fixed Speed 2
Desired RPM set point when the speed select input is set to 2. yes

Fixed Speed 2
Desired RPM set point when the speed select input is set to 3. yes

Fuel Limit The percentage limiter set point on the fuel demands that prevents the over fueling after the engine has started. yes

! Gain PID. Proportional mode responds to a change in the process variable proportional to the current measured error value. yes

! Gain Enabled Turns the external gain pot on an off. Available only in the SDG512/13. yes

! Overspeed
RPM Set Point for an Engine Shutdown Signal to the actuator. yes
RPM max
Maximum RPM set point for Variable speed Read only
RPM min
Minimum RPM set point for Variable speed Read only
Serial Number
System Information. Read only
Software Version
System Information. Read only
Speed Ramp
Down The % percent set point to decrease engine speed per second when changing speeds. yes

Speed Ramp Up
The % percent set point to increase engine speed per second when changing speeds. yes

Speed Request
Desired speed of engine at the current state. yes

! Stability
PID. In integral mode, the controller output is proportional to the amount and duration of the error signal. yes

Gradually increases the amount of fuel during the engine crank cycle, which eliminates most unnecessary
Starting Fuel
smoke. The higher the setting the quicker the engine comes to speed. The starting position of the actuator at
Ramp yes
engine start. The percent to increase the fuel flow per second until the engine reaches 100% or the governors
takes control.

Starting Fuel
Determines how much fuel to begin with before fuel ramping engages. The minimum fuel required for starting
Start Point yes
the engine. Retards black smoke. The starting position of the actuator at engine start.

! Teeth
Number or teeth on the flywheel. Used to calculate speed settings and values. yes

Total Gain The sum of Internal and External Gain. yes

Velocity
Actual RPM of engine. Read only

This document is subject to change without notice.

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8.2 Recommended Screen Layout for Configuration

Before starting engine safety, basic parameters on the SDG must be configured.
Refer to FIGURE 4 & TABLES 6-10 for guidelines.
TABLE 6.
Screen Section 1. Basic Parameters that must be configured before start.
Configurable Parameters Instruction Critical
Settings
Teeth Configure first. Used to calculate values and settings. !
Overspeed Set typically 10% above desired governing speed. !
This parameter must be set higher than maximum cranking RPM. This set point helps the
Crank Termination !
SDG determine in the engine is cranking or running.
Speed Select 1, 2, 3 Insure that the Speed Select is wired correctly (see TABLE 5). Set RPM in the appropriate !
Fixed Speed window.
Variable Speed Operation Make sure the Variable Speed Potentiometer is connected correctly (see DIAGRAM 3 & 4). !
Set the RPM min and max on the Speed Potentiometer Calibration Screen. Click on the
Calibration button. Set the Minimum position on the potentiometer and then click on the Con-
tinue button. Set the Maximum position on the potentiometer and then click on the Continue
button. Click OK on the popup window to calibrate.

ADC min and max (meter) Represents the min and max values set on the Variable Speed Potentiometer.

FIGURE 4.

4
3

5
This document is subject to change without notice.
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TABLE 7.
Screen Section 2. Read Only Meters
Meter Description
Speed Request Displays the speed requested for the current state.
Velocity Displays the SDG’s reading of Actual RPM Engine.

TABLE 8.
Screen Section 3. Advanced configurations that do not need to be configured before starting the engine.
Configurable Parameters Instruction
Started Fuel Ramp Gradually increases the amount of fuel flow per second during the engine crank cycle, which eliminates most
unnecessary smoke. The higher the setting the quicker the engine comes to speed.
Starting Fuel Start Point Determines how much fuel to begin with before fuel ramping begins.
Speed Ramp Up The % percent set point to increase engine speed per second when changing speeds.

Speed Ramp Down The % percent set point to decrease engine speed per second when changing speeds.
Fuel Limit Adjusts maximum amount of fuel the SDG will command. During normal starting cycles and short step loads,
this function will not engage. Only after a 1 second delay of the Fuel Limit exceeding it’s configured value, then
the fuel will roll back to the configured value. Helps to reduce engine smoke and prevents engine damage.

TABLE 9.
Screen Section 4. PID Parameters. Must be adjusted after the engine starts for best performance.
Configurable Parameters Instruction Critical
Settings
Gain The PID screens are adjustable by only increments of 1 or 2. Choose increments by select- !
ing the appropriate option button. The use the UP and DOWN buttons for fine tuning.
Stability !
Derivative !
Gain Enabled Select YES or NO to turn the GAIN Adjustment ON or OFF. (SDG512 & SDG513 only)

Total Gain The sum of Internal and External Gain. (SDG512 & SDG513 only)

TABLE 10.
Screen Section 5. Read Only Meters
Meter Description
Serial Number
Software Version System Information.
Build Date

8.3 Starting the Engine

1. Verify parameters settings.

2. Start engine.
3. After the engine has started use the Gain, Stability and Derivative (PID) parameters must be set for best performance (See
TABLE 6.)

This document is subject to change without notice.

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9.0 Saving Screen Layout of Grid Desktop

1. Select File from the drop down menu and choose Save.
2. Name the file and save to desired location.

Please note that the above procedure saves only the layout of the meters & configurable parameters windows and not the
actual changes to the configurable parameters. (see section 5.2 Saving Configurable Parameters)

9.1 Saving Configurable Parameters

The file extension for Saving Layout of Grid Desktop is (.sfg) and the file extension for Saving Configurable
Parameters is (.all).

1. Select Configure from the drop down menu and choose Save to File.
2. Click to highlight the connection currently in use and single click on the Save to File button.
3. Name the file and save to desired location.
4. Click on the OK button on the Save to FIConfMngr window to acknowledge that parameters have been saved to
file.
5. Exit the Configuration Manager by single clicking on the top right Cancel Option Box of the window.

9.2 Opening a Saved Screen Layout of Grid Desktop

1. Select File from the drop down menu and choose Open. Find the saved settings (file extension .sfg).
2. Click the OK button to accept on the Configuration File Connection window.
3. The Open Configuration File Manager window should appear.
4. Verify that the appropriate connection is highlighted.
5. Single click on the Connect button to connect. The Check Status window should appear, click OK to accept.
6. Exit the Connection Manager by single clicking on the top right Cancel Option Box of the window.

9.3 Loading a Saved Configurable Parameters

1. Select Configuration from the drop down menu and choose Load to File.
2. Click to highlight the connection.
3. Click on the Load from File button and locate the saved settings (file extension .all).
4. Click on the OK button Load from Configuration Manager window to accept. 5. Exit the Configuration Load
from File Manager by single clicking on the top right Cancel Option Box of the window.

This document is subject to change without notice.

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10.0 Loading Saved Settings onto Multiple Units

1. Turn ON Power and Open saved Screen layout. (see Section 6.1)
2. Load saved parameters. (see Section 6.2)
3. Select Connections from the drop down menu and choose Configure.
4. Click to highlight the connection currently in use.
5. Single click on the Disconnect button to disconnect.
6. Turn the power supply OFF on the SDG.
7. Disconnect all the connections to the SDG.
8. Reconnect all the wires to the a new SDG unit for configuring. (see Sections 2 & 3)
9. Loads setting onto new SDG unit. (see Section 6)

10.1 Disconnecting

1. Select Connections from the drop down menu and choose Configure.
2. Click to highlight the connection currently in use.
3. Single click on the Disconnect button to disconnect.

11.0 Trouble Shooting

Engine will not start- checklist after you stop cranking.

1. Check for battery connection, proper polarity, and proper charge.

2. Recheck Flywheel Teeth, Overspeed Setting, Variable and Fixed Speed Settings.

Engine will not start – checklist while cranking the engine.

1. Measure the battery voltage while attempting a crank. If the voltage drops below 8 Volts then the battery is not
sufficiently charged.
2. Check that the actuator voltage is no less than 2 volts less than battery voltage. If the actuator voltage checks then
verify the proper connection of the actuator.
3. Check Crank Termination setting. Typically the Crank Termination should be set to at least 50RPM higher than the
maximum cranking speed of the engine. If possible measure the cranking RPM of the engine. You can try increasing
in 100RPM increments. If engine appears to start but cuts out then the Fuel Limit may be too low. Try increasing the
Fuel Limit to 100% initially to disable the Fuel Limiting. If the engine starts, the Fuel Limit will have to be reduced
from 100% to more optimum level.
4. Verify the Mag Pickup signal is properly connected. If possible measure the pickup signal while the engine is
cranking. The voltage must be a minimum of 05.VRMS for proper operation.
5. If possible through the PC Configuration software check the Starting Fuel Limit and the Starting Fuel Start Point.
6. Check set to a shorter time of Fuel Ramp Up through the PC configuration software.

This document is subject to change without notice.

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Engine Starts but not running at proper speed.

1. Are the fixed speed inputs properly configured. If one or both of the fixed speed inputs is not connected to ground
the SDG will operate in variable speed mode.
2. Make sure the correct number if flywheel teeth is set using the configuration software.
3. Make sure the proper fixed speed is set using the configuration software.

Engine not running at the correct Variable Speed

1. Make sure the Variable Speed Potentiometer is connected properly. Refer to the configuration section for proper
setup. Verify, through the configuration software, that the MIN speed setting is less than the MAX speed setting.
2. Be sure the proper number of flywheel teeth are set.

Overspeed during load transient.

1. The overspeed may be set is too low. Recheck the overspeed setting.
2. The SDG is not tuned properly for the application. Try retuning the SDG.

Overspeed during speed changes.

1. Overspeed setting may be too low. Recheck the Overspeed setting.

2. Speed Ramp setting is set too low. Increase the Speed Ramp setting. This will cause the engine to accelerate more
slowly reducing overshoot.

12.0 Specifications

Input/Output Parameters
Performance Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 24 VDC Battery Systems (6.5VDC to 33VDC)
Isochronous Operation/Steady State Stability .................................± 0.25% Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Negative Ground (Case Isolated)
Speed Range/Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400-10KHz Ground Power Consumption . . . . . 70 mA max. continuous plus actuator current
Speed Drift w/ Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . < ± 1% Max. Actuator Current . . . . . . . . . . . . . . . . . . Max 10 Amp cont. [@25°C (77°F) Inductive]
Idle Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . .Full Range Speed Sensor Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5-120 VRMS
Droop Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17% Regulation Load Share/Synchronizer Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-10VDC
Speed Trim Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 5% of Rated Speed Discrete Output . . . . . . . . . . . . . . . . . . . . . . . . . . Supply up to 25m rated 20mA@12Vdc

Environmental Configuration Parameters

Ambient Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to +85°C Flywheel Teeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-250
(-40° to +180°F) Range (Gain/Stability multiplier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 1-10
Relative Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Up to 95% Fixed Speed Settings* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-max RPM
Variable Speed Settings* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-max RPM
Overspeed Setting* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-max RPM
Reliability
Starting Fuel Preset* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-max Fuel
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7G@20-100Hz
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100% Functionally Tested

* Maximum RPM is based on the Flywheel Teeth. RPM= Frequency x 60/Flywheel Teeth. Maximum Frequency is 10,000Hz.

This document is subject to change without notice.

Caution: None of GAC products are flight certified controls including this item.

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