Smartgen HGM9420N User manual

HGM9420N_HGM9420LT
GENSET CONTROLLER
USER MANUAL
SMARTGEN (ZHENGZHOU) TECHNOLOGY CO.,LTD.

Chinese trademark
English trademark
SmartGen —make your generator smart
SmartGen Technology Co., Ltd.
No.28 Jinsuo Road
Zhengzhou City
Henan Province
P. R. China
Tel: [phone]
0086-(0)371-67991553/67992951
0086-(0)371-67981000(overseas)
Fax: [phone]
Web: www.smartgen.com.cn
www.smartgen.cn
Email: [e-mail]
All rights reserved. No part of this publication may be reproduced in any material form (including
photocopying or storing in any medium by electronic means or other) without the written permission of
the copyright holder.
Applications for the copyright holder‘s written permission to reproduce any part of this publication should
be addressed to SmartGen Technology at the address above.
Any reference to trademarked product names used within this publication is owned by their respective
companies.
SmartGen Technology reserves the right to change the contents of this document without prior notice.
Table 1 Software Version
Date
Version
Note
2019-12-10
1.0
Original release.

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Table 2 Symbol Instruction
Symbol
Instruction
NOTE
Highlights an essential element of a procedure to ensure correctness.
CAUTION
Indicates a procedure or practice, which, if not strictly observed, could result in
damage or destruction of equipment.
WARNING
Indicates a procedure or practice, which could result in injury to personnel or loss of life
if not followed correctly.

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CONTENTS
1 OVERVIEW......................................................................................................................................... 6
2 PERFORMANCE AND CHARACTERISTICS.................................................................................... 7
3 SPECIFICATION............................................................................................................................... 10
4 OPERATION..................................................................................................................................... 12
4.1 INDICATOR LAMP.................................................................................................................. 12
4.2 PUSHBUTTONS...................................................................................................................... 13
4.3 LCD DISPLAY ......................................................................................................................... 14
4.3.1 MAIN DISPLAY ................................................................................................................... 14
4.3.2 USER MENU AND PARAMETER SETTING...................................................................... 16
4.4 AUTO START/STOP OPERATION......................................................................................... 18
4.4.1 ILLUSTRATION................................................................................................................... 18
4.4.2 AUTOMATIC START SEQUENCE..................................................................................... 18
4.4.3 AUTOMATIC STOP SEQUENCE....................................................................................... 19
4.5 MANUAL START/STOP OPERATION.................................................................................... 19
5 CONTROLLER SWITCH CONTROL PROCEDURES..................................................................... 20
5.1 SWITCH CONTROL PROCEDURE FOR SYNC TRANSFER DISABLED............................ 20
5.1.1 MANUAL TRANSFER PROCESS ...................................................................................... 20
5.1.2 AUTOMATICTRANSFER PROCEDURE............................................................................ 20
5.2 SWITCH CONTROL PROCEDURE FOR SYNCHRONOUS TRANSFER ENABLED .......... 21
5.2.1 MANUAL TRANSFER PROCEDURE................................................................................. 21
5.2.2 AUTO SWITCHING PROCESS.......................................................................................... 22
6 PROTECTIONS................................................................................................................................ 25
6.1 WARNING ALARMS................................................................................................................ 25
6.2 BLOCK ALARMS..................................................................................................................... 32
6.3 TRIP ALARM........................................................................................................................... 38
6.4 TRIP AND STOP ALARMS..................................................................................................... 43
6.5 SHUTDOWN ALARMS............................................................................................................ 50
7 WIRING CONNECTION ................................................................................................................... 56
8 SCOPES AND DEFINITIONS OF PROGRAMMABLE PARAMETERS.......................................... 59
8.1 CONTENTS AND SCOPES OF PARAMETERS.................................................................... 59
8.2 ENABLE DEFINITION OF PROGRAMMABLE OUTPUT PORTS......................................... 77
8.2.1 DEFINITION OF DIGITAL OUTPUT PORTS...................................................................... 77
8.2.2 DEFINED PERIOD OUTPUT.............................................................................................. 85
8.2.3 DEFINED COMBINATION OUTPUT.................................................................................. 85
8.3 DEFINED CONTENTS OF PROGRAMMABLE INPUT PORTS............................................ 86
8.4 SELECTION OF SENSORS.................................................................................................... 89
8.5 CONDITIONS OF CRANK DISCONNECT SELECTION........................................................ 90
9 PARAMETERS SETTING................................................................................................................. 90
10 CYCLE START ................................................................................................................................. 91
11 SENSOR SETTING .......................................................................................................................... 91

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12 COMMISSIONING............................................................................................................................ 93
13 TYPICAL APPLICATION.................................................................................................................. 94
14 NEL TRIP DESCRIPTION................................................................................................................ 96
15 DUMMY LOAD CONNECTION........................................................................................................ 97
16 OIL CONSUMPTION ILLUSTRATION............................................................................................. 98
17 ETHERNET PORT............................................................................................................................ 98
18 HOST USB PORT............................................................................................................................. 99
19 INSTALLATION................................................................................................................................. 99
19.1 SGE02 EXPANSION MODULE............................................................................................... 99
19.1.1 4G ANTENNA PORT ...................................................................................................... 99
19.1.2 GPS ANTENNA PORT.................................................................................................... 99
19.1.3 SIM CARD INSTALLATION.......................................................................................... 100
19.2 CASE DIMENSIONS AND CUTOUT SIZE........................................................................... 100
20 SMS MESSAGE ALARM AND REMOTE CONTROL.................................................................... 102
20.1 SMS MESSAGE ALARM....................................................................................................... 102
20.2 SMS MESSAGE REMOTE CONTROL................................................................................. 102
21 CONNECTIONS OF CONTROLLER AND J1939 ENGINE........................................................... 103
21.1 CUMMINS ISB/ISBE.............................................................................................................. 103
21.2 CUMMINS QSL9 ................................................................................................................... 103
21.3 CUMMINS QSM11 (IMPORT)............................................................................................... 104
21.4 CUMMINS QSX15-CM570.................................................................................................... 104
21.5 CUMMINS GCS-MODBUS.................................................................................................... 105
21.6 CUMMINS QSM11 ................................................................................................................ 105
21.7 CUMMINS QSZ13................................................................................................................. 105
21.8 DETROIT DIESEL DDEC III/IV ............................................................................................. 106
21.9 DEUTZ EMR2........................................................................................................................ 106
21.10 JOHN DEERE........................................................................................................................ 106
21.11 MTU MDEC............................................................................................................................ 107
21.12 MTU ADEC(SMART MODULE)............................................................................................ 107
21.13 MTU ADEC (SAM MODULE)................................................................................................ 107
21.14 PERKINS............................................................................................................................... 108
21.15 SCANIA.................................................................................................................................. 108
21.16 VOLVO EDC3........................................................................................................................ 108
21.17 VOLVO EDC4........................................................................................................................ 109
21.18 VOLVO-EMS2 ....................................................................................................................... 109
21.19 YUCHAI ................................................................................................................................. 110
21.20 WEICHAI................................................................................................................................ 110
22 FAULT FINDING............................................................................................................................. 111
23 APPENDIX...................................................................................................................................... 112

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1 OVERVIEW
HGM9420N_HGM9420LT genset controller is used for automatic control of single genset to realize
automatic start/AMF/synchronous transfer/cloud monitoring. This series of controller integrates
digitalization, intelligence, and network technology. It fits with LCD graphic display, optional Chinese,
English and other languages interface, and it is reliable and easy to use.
HGM9420N_HGM9420LT genset controller applies 32-bit microprocessor technology, realizing
precise measuring of many parameters, value adjusting, and timing, threshold adjusting etc. functions. A
majority of parameters can be adjusted from the front panel. All parameters can be adjusted via USB or
RS485 port on PC. Controller fits with SAE J1939 port, which can communicate with multiple ECU
(ENGINE CONTROL UNIT) units with J1939. With compact structure, simple wiring, and high reliability,
it can be used in various genset automation systems.
HGM9420N_HGM9420LT genset controller can connect with SGE02-4G network communication
expansion module, which can make genset connected with Internet. After controller is logged in cloud
server, it can upload the data information (includes: GPS positioning site, altitude etc.) at real time to the
corresponding cloud server. Users can monitor and check genset running status and event log at real
time by mobile APP (IOS or Android), or PC similar terminal device. Network communication module has
SMS message function.

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2 PERFORMANCE AND CHARACTERISTICS
HGM9420N_HGM9420LT: fits Mains-Gen power monitoring for Mains/Gen automatic transfer control
(AMF). It is used for single unit automation system formed by one Mains and one Genset. Mains can be
disabled by disabling mains parameters for single unit automation. By remote start signal genset auto
start and stop can be controlled. Mains can be enabled only by setting mains parameters to realize
mains parameter only display; by remote start signal genset auto start and stop can be controlled.
Synchronous transfer function can be enabled to realize Gen and Mains synchronous transfer function.
Main characteristics are as below:
—240x128 LCD with backlight, multilingual interface (including English, Chinese or other languages)
which can be chosen at the site, making commissioning convenient for factory personnel; For other
languages language package needs to be written by PC software;
—Language packages include: Simplified Chinese, Traditional Chinese, English, Spanish, Portuguese,
Russian, Arabic, Turkish, Thai, French, Polish, German, Italian, Dutch;
—2 RS485 and 1 RJ45 Ethernet communication port, "4 remotes" (remote control, remote measuring,
remote communicating, and remote adjusting) can be realized by MODBUS protocol;
—1 Fn function key, can be set to other function on the panel, or Fn key function;
—Suitable for 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, and 2-phase 3-wire systems with
voltage 120/240V and frequency 50/60Hz;
—Collects and shows 3-phase voltage of Mains/Gen, 3-phase current, frequency, load power and
Gen voltage harmonic parameters;
Mains
Line voltage Uab, Ubc, Uca
Phase voltage Ua, Ub, Uc
Frequency Hz
Phase sequence
Gen
Line voltage Uab, Ubc, Uca
Phase voltage Ua, Ub, Uc
Frequency Hz
Phase sequence
Harmonic wave 1-21 times harmonic content waveform distortion
Load
Current Ia, Ib, Ic
Each phase and total active power P
Reactive power Q
Apparent power S
Power factor PF
Gen total energy kWh, kvarh, kVAh
Earth current A
Unbalanced current A

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Load output percentage (active power/rated power)x100%
Average load of current run kW
Total energy of current run kWh
Average load of last time kW
Historical max average load kW
—Mains has over voltage, under voltage, over frequency, under frequency, loss of phase, reverse
phase sequence function; Gen has over voltage, under voltage, over frequency, under frequency, over
current, over power, reverse power, loss of phase, reverse phase sequence, unbalanced voltage high,
waveform distortion high, earth fault, unbalanced current high, power factor low, loss of excitation
detection function;
—Synchronous transfer enabled parameters: voltage difference of Gen and Mains, frequency
difference of Gen and Mains, phase angle difference of Gen and Mains;
—Collect precisely various parameters of engine:
Temperature Unit: °C/°F
Oil pressure Unit: kPa/psi/bar
Fuel Level Unit: %
Speed Unit: r/min (RPM)
Battery voltage Unit: V
Charger D+ voltage Unit: V
Total run time max 65535 hours
Total start times max 65535 times
—Control and protection function: automatic start/stop of the diesel genset, ATS(Auto Transfer Switch)
control and perfect fault indication and protection function etc.;
—Parameter setting function: parameters can be modified by users and cannot be lost even in case of
power outage; most of them can be adjusted from the front panel of the controller and all of them can be
modified on PC by USB, RS485 port, or RJ45 Ethernet port;
—3 fixed analogue sensor inputs (temp., oil pressure, fuel level);
—3 configurable sensors can be set to temp., pressure, or level sensor;
—Oil pressure sensor, level sensor, flexible sensor 1, flexible sensor 2 inputs can directly connect
resistance, voltage, or current sensor; other sensor inputs can connect resistance sensor; if voltage or
current type sensors need to connect, please notify us before order;
—Multiple temp., pressure, and fuel level sensor curves can be used directly, and custom sensor
curve can be done;
—Multiple crank disconnect conditions (speed, engine oil pressure, gen frequency) are optional;
—Wide power supply range DC(8~35)V, suitable for different starting battery voltage environment;
—Event log, real-time clock, scheduled start & stop function (allowing to start the genset once a
day/week/month with load or not); cyclic start function of two gensets is fitted;
—Alarm data record function, which allows to record the genset data of 5 alarms;

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—A USB Host port, where U flash of FAT32 format can be inserted, can put controller configured
parameters to the controller, or save controller parameters to the U flash; Historical data can be saved;
—Accumulative total run time of A and B and total electric energy of A and B; Users can reset it as 0
and re-accumulative the value, making convenience for users to count the total value as they wish;
—Heater, cooler and fuel pump control functions;
—Applicable for water pump genset; it can also be used as an indicating instrument (only indication,
alarm, no action for relays);
—Maintenance function; 3 groups of maintenance parameters, maintenance time, pre-alarm A time,
pre-alarm B time, pre-alarm time due action, and maintenance time due action can be set;
—By judging DC voltage, auto charging start function can be realized;
—Through CAN (2) port or RS485 (2) port cyclic start function of two gensets can be realized; master
run time and backup run time can be set;
—Through CAN port, AIN24, AIN26-M02, AIN8, DIN16A and DOUT16B expansion module and
BAC150CAN charger can be connected;
—By setting oil tank volume and oil consumption curve, residue fuel, residue run time and real-time oil
consumption can be displayed;
—Monitoring data communication protocol address is customizable by users;
—PLC function is fitted;
—By connecting SGE02-4G module, wireless network can connect with cloud server;
—By connecting SGE02-4G module, SMS function can be realized; when alarms occur, it can
automatically send alarm information to the pre-set 5 phone numbers; messages are also able to control
genset and check genset status;
—By connecting SGE02-4G module, GPS positioning function can be realized to obtain genset
location;
—Genset data can be uploaded at changing by applying network data communication protocol of
JSON format; at the same time network flow are extremely reduced by using compression algorithm;
when alarms occur, it can immediately upload data to the server;
—IP65 waterproof level is achieved with the help of rubber-ring gasket between shell and control
fascia;
—Metal fixing clips employed to fix the controller and make it perform better under high temperature
environment; Modular structure design, self-extinguishing ABS plastic shell, pluggable terminal, built-in
mounting, compact structure with easy installation;

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3 SPECIFICATION
Table 3 Technical Specification
Parameter
Details
Working Voltage
Range: DC8V - DC35V continuous, DC reverse connection protection
Resolution: 0.1V
Accuracy: 1%
Overall Consumption
<7W (Standby mode: ≤2.5W)
AC Voltage
Phase voltage
Range: AC15V - AC360V (ph-N)
Resolution: 0.1V
Accuracy: 0.5%
Wire voltage
Range: AC30V - AC620V (ph- ph)
Resolution: 0.1V
Accuracy: 0.5%
AC Frequency
Range: 5Hz -75Hz
Resolution: 0.01Hz
Accuracy: 0.1Hz
AC Current
Rated: 5A
Range: 0A –10A
Resolution: 0.1A
Accuracy: 1%
Speed Sensor
Voltage Range: 1. 0 V - 24 V (RMS)
Frequency Range: 5Hz –10000Hz
Charger(D+) Voltage
Range: DC0V - DC60V continuous
Resolution: 0.1V
Accuracy: 1%
DC Voltage
Range: DC0V-DC100V
Resolution: 0.1V
Accuracy: 1%
Analog Sensor
Resistor Input
Range: 0Ω- 6000Ω
Resolution: 0.1
Accuracy: 1Ω(below 300Ω)
Voltage Input
Range: 0 V - 10V
Resolution: 0.001V
Accuracy: 1%
Current Input
Range: 0 mA - 20mA
Resolution: 0.01mA

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Parameter
Details
Accuracy: 1%
Fuel Relay Output
16A 24V DC power supply output(relay output)
Crank Relay Output
16A 24V DC power supply output(relay output)
Aux. Relay Output 1
8A 24V DC power supply output (relay output)
Aux. Relay Output 2
8A 24V DC power supply output (relay output)
Aux. Relay Output 3
8A 24V DC power supply output (relay output)
Aux. Relay Output 4
16A 250V AC volt-free output
Aux. Relay Output 5
16A 250V AC volt-free output
Aux. Relay Output 6
16A 250V AC volt-free output
Aux. Output 7-10
1A DC30V transistor B- output
Digital Input 1-10
Low threshold voltage 1.2V; high limit voltage is 60V;
RS485
Isolated, half-duplex, 9600 baud rate,
maximum communication length 1000m
Internet Access
Self-adapting 10/100Mbit
CAN Port
Isolated, maximum communication length 250m,
Belden 9841 cable or equivalent
EMC/CE Certification
EN 61326-1: 2013
Vibration Test
5 - 8 Hz: 17 mm
8 - 100 Hz: 4g
100-500Hz: 2g
IEC 60068-2-6
Shock Test
50g, 11ms, half-sine, complete shock test from three directions, and
18 times shock for each test
IEC 60068-2-27
Bump Test
25g, 16ms, self-sine
IEC 60255-21-2
Production Compliance
According to EN 61010-1 installation category (over voltage category)
III, 300V, pollution class 2, altitude 3000m
Case Dimensions
242 mm x 186 mm x 49 mm
Panel Cutout
214mm x 160mm
Working Conditions
HGM9420N:
Temperature: (-25~+70)°C Relative Humidity: (20~93)%RH
HGM9420LT:
Temperature: (-40~+70)°C Relative Humidity: (20~93)%RH
LCD Display (HGM9420LT)
Under the temperature of -40°C, after power on for 20s it can display
normally; after power on for 2min, dynamic display responses
normally;
Storage Conditions
HGM9420N: Temperature:(-30~+80)°C
HGM9420LT: Temperature:(-45~+80)°C
Protection Level
Front Enclosure: IP65 when rubber-ring gasket is installed between
the enclosure and the control screen
Rear Enclosure: IP20

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Parameter
Details
Insulation Intensity
Apply AC2.2kV voltage between high voltage terminal and low voltage
terminal and the leakage current is not more than 3mA within 1min.
Weight
0.91kg
4 OPERATION
4.1 INDICATOR LAMP
Fig.1 HGM9420N_HGM9420LT Indication
NOTE: Description for parts of indicators:
Table 4 Alarm indicator Description
Alarm Type
Alarm Indicator
Warning
Slow flashing (1 time per second)
Block
Slow flashing (1 time per second)
Trip
Fast flashing (5 times per second)
Trip and Stop
Fast flashing (5 times per second)
Shutdown
Fast flashing (5 times per second)
No Alarm
Extinguished
NOTE 1: Running indicator: is normally illuminated after crank disconnection and before ETS stop and extinguished for
other periods;
NOTE 2: Gen normal indicator: is normally illuminated when the generator is normal; flashing when generator state is
abnormal; extinguished when there is no generating power.
NOTE 3: Mains normal indicator: is always illuminated when mains is normal, flashing when mains is abnormal,
extinguished when there is no mains.
NOTE 4: Fn function key indicator: is illuminated when Fn function key is pressed, extinguished when group keys are
pressed.

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NOTE 5: When mains is disabled, mains normal indicator is extinguished, meanwhile mains close/open keys won't work.
4.2 PUSHBUTTONS
Table 5 Button Function Description
Icons
Buttons
Description
Stop Key
Stop the running generator in Auto/Manual mode;
Reset alarm in stop mode;
Press for over 3s, panel indicators can be tested (lamp test);
During stop process, press this button again to stop the
generator immediately.
Start Key
Start the static genset in Manual mode.
Manual Key
Press this key and the controller goes in Manual mode.
Auto Key
Press this key and controller goes in Auto mode.
Mute/
Reset Alarm Key
Remove the alarm sound;
Remove the alarm by pressing for over 3s.
Fn Key
Combine with other key to make shortcut setting; It can also be
set to other function key (start key, stop key etc.);
Close/Open Key
Close/open Gen or Mains breaker in manual mode.
Up/Increase Key
1) Screen scroll;
2) Move up the cursor and increase value in setting menu.
Down/Decrease
Key
1) Screen scroll;
2) Move down the cursor and decrease value in setting menu.
Left Key
1) Page scroll;
2) Left move the cursor in setting menu.
Right Key
1) Page scroll;
2) Right move the cursor in setting menu.
Set/Confirm Key
1) Enter setting screen;
2) Enter next menu in setting or confirm the settings.
Exit Key
1) Return to main menu;
2) Return to previous menu in setting.
NOTE: Press and simultaneously in manual mode and it can force the generator to crank. At this time
the controller shall not judge whether the genset start is successful or not according to the starting conditions. It is
controlled by the operator. When operator observes that the engine has started, he/she should release the button and the
start output will be deactivated. Safety on delay will be initiated.

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NOTE: Regarding ECU genset, in Stop/Auto mode, Press button and it shall power on the ECU (fuel output
and ECU power output are active.).
CAUTION: Factory default password is ―00318‖, and users can change it in case others change the advanced
parameter settings. Please clearly remember the password after changing. If you forget it, please contact SmartGen
services and send the PD information in the controller page of ―ABOUT‖ to the service personnel.
4.3 LCD DISPLAY
4.3.1 MAIN DISPLAY
Paging is applied for the main screen; is used for page scroll and for screen scroll.
Main Screen includes the following contents:
Gen: voltage, frequency, current, active power, reactive power;
Mains: voltage, frequency;
Engine: speed, temperature, engine oil pressure, liquid level, battery voltage;
Part of status displays;
Status page includes the following contents:
SGE02-4G status, genset status, Mains breaker status, and breaker status;
Engine page includes the following contents:
Engine speed, engine temperature, engine oil pressure, fuel level, configurable analog 1, configurable
analog 2, configurable analog 3, battery voltage, charger voltage, accumulated running time,
accumulated start times, DC voltage;
NOTE: If CAN BUS is connected and engine information is from J1939, this page also includes: coolant pressure,
coolant level, fuel temperature, fuel pressure, inlet temperature, exhaust temperature, turbo pressure, fuel consumption,
total fuel consumption and so on. (Different engines have different parameters.)
NOTE: If AIN24 expansion module, or AIN16-M02 expansion module, or BAC150CAN expansion module is enabled,
engine page also displays related monitoring data of expansion module.
NOTE: If oil tank volume and oil consumption setting are enabled, engine page also displays residue fuel, residue
running time of fuel, and oil consumption parameters.
Gen page includes the following contents:
Line voltage, wire voltage, frequency, phase sequence, harmonic content, voltage unbalance
percentage.
Load page includes the following contents:
Load current, active power of different phases, total active power and percentage, reactive power of
different phases, total reactive power, apparent power of different phases, total apparent power, power
factor of different phases, average power factor, accumulated electric power, earth current and
percentage, unbalance current and percentage, average load of this run, historical max average load,
average load of last run, accumulated electric power of this run.
NOTE: P stands for active power; Q stands for reactive power;

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Table 6 Power Factor Display Description
NOTES:
1. Input active power, and generator send active power to load.
2. Output active power, and load supply electricity to generator.
3. Input reactive power, and generator send reactive power to load.
4. Output reactive power, and load send reactive power to generator.
Mains page includes the following contents:
Phase voltage, wire voltage, frequency, phase sequence.
Snyc. page includes the following contents:
NOTE: This displays when Sync. Transfer is enabled.
Voltage difference, frequency difference, phase position difference.
Alarm page:
NOTE: For ECU alarms and shutdown alarms, if the alarm information is displayed, check the engine according to it.
Otherwise, please check the generator manual according to SPN alarm code.
Event log page:
Make records about all start/stop events (alarm events except warnings, manual start/stop events) and
the real time when events occur;
Maintenance Countdown page includes the following contents:
3 maintenance countdowns display.
NOTE: if 3 maintenance countdowns are not enabled, they are not displayed.
Others page includes the following:
Module date and time, input and output status, communication indication, RS485 configuration, Ethernet
configuration (if enabled), LCD temperature, MCU temperature.
NOTE: HGM9420N controller LCD temperature is +++℃.
About page includes the following contents:
Release software version, hardware version, and product PD number.
Power
Factor
Conditions
Active
Power
Reactive
Power
Remark
COS>0L
P>0,Q>0
Input
Input
Load is resistive induction.
COS>0C
P>0,Q<0
Input
Output
Load is resistive capacitance.
COS<0L
P<0,Q>0
Output
Input
Load equals an under excitation generator.
COS<0C
P<0,Q<0
Output
Output
Load equals an over excitation generator.

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4.3.2 USER MENU AND PARAMETER SETTING
Press key for more than 1s and it enters user menu.
Parameter Setting
After inputting the correct password (factory default password is 00318) you can enter the parameter
setting screen.
Language
Optional Simplified Chinese, English and others.
Commissioning
On load, off load and users-defined commissioning are optional. Defined commissioning can be
configured regarding load on or load off, commissioning time, and which mode it shall return after
commissioning (manual mode, auto mode and stop mode).
U Flash Configurations Writing and Reading
Configuration files in U flash can be checked; loading configuration files, saving configuration files,
saving new configuration files, configuration files can also be saved and loaded on PC; configuration file
suffix name is .lgm.
Clear users‘ accumulation
It can clear total running time A and B, total electric energy A and B.
Parameter settings include following contents:
Module setting
Mains setting
Timers setting
Engine setting
Generator setting
Load setting
Switch setting
Sensor setting
Digital input setting
Digital output setting
Scheduled run setting
Scheduled not run setting
Maintenance setting
Alt. Config setting
Cycle start enable setting
Sync. setting
Expansion setting
For example:
Return
Module
Mains
Timers
Engine
Generator
Load
Start Delay
Stop Delay
Pre-heat Delay
Fuel Delay
Cranking Time
Crank Rest Time
Safety On Time
Table 1:
is used to change the contents needed to
set; is used to enter the setting (Table 2);
is used to exit from setting;

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Switch
Sensor
Digital Input
Start Idle Time
Warming Up Time
Cooling Time
Start Delay
Stop Delay
Pre-heat Delay
Fuel Delay
Cranking Time
Crank Rest Time
Safety On Time
Start Idle Time
Warming Up Time
Cooling Time
00030s
Table 2:
is used to change the contents needed to
set; is used to confirm the setting (Table 3),
returns to previous menu (Table 1);
Start Delay
Stop Delay
Pre-heat Delay
Fuel Delay
Cranking Time
Crank Rest Time
Safety On Time
Start Idle Time
Warming Up Time
Cooling Time
00030s
Table 3:
is used to enter the setting (Table 4), is
used to return to previous menu (Table 2).
Start Delay
Stop Delay
Pre-heat Delay
Fuel Delay
Cranking Time
Crank Rest Time
Safety On Time
Start Idle Time
Warming Up Time
Cooling Time
00030s
Table 4:
is used to change cursor position;
is used to change the value where the cursor
is; is used to confirm the setting (Table 3),
is used to exit the setting (Table 3).
NOTE: At configuration, press and it can directly exit from the setting.

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4.4 AUTO START/STOP OPERATION
4.4.1 ILLUSTRATION
Press button and the indicator beside is illuminated, which means the genset is at Auto Start
Mode.
4.4.2 AUTOMATIC START SEQUENCE
a) HGM9420N_HGM9420LT start conditions:
Mains enabled: when mains is abnormal (over voltage, under voltage, over frequency, under frequency,
loss of phase, reverse phase sequence), controller enters "Mains Abnormal Delay", LCD mains status
line displays countdown. When mains abnormal delay is over, it enters "Start Delay"; or when remote
start (on load) input is active, it enters "Start Delay".
Mains disabled or Mains only displayed: when remote start (onload) input is active, it enters "Start
Delay".
b) ―Start Delay‖ countdown will be displayed on genset status line;
c) When start delay is over, preheating relay is energized (if configured), ‗preheat delay XX s‘
information will be displayed on status line;
d) After the above delay, the fuel relay is energized, and then the start relay is engaged. During the
‗start time‘, if the genset does not start, then fuel relay and start relay stops outputting, and enter
‗crank rest time‘, waiting for next crank;
e) Should the start continues beyond the set attempts, the controller issues ‗start failure‘and stops the
genset and at the same time alarm page on LCD displays ‗start failure alarm‘;
f) If it starts during the attempts, it enters ‗safety on time‘, and during this period Low Oil Pressure,
High Temperature, Under speed and Charge Alternator Failure alarms are all inactive; After ‗safety
on time‘, it enters ‗start idle delay‘(if configured);
g) During ‗start idle delay‘, under speed, under frequency, under voltage alarms are inhibited. When
this delay is over, ‗warming up delay‘ is initiated (if configured);
h) When synchronous transfer is disabled, mains abnormal start or remote start (onload) input is active,
and when warming up delay is over, if gen is normal, gen status indicator is illuminated; if gens
voltage, frequency meet the onload requirements, gen close relay outputs and genset takes the
load. Gen supply indicator is illuminated, and genset enters normal running status; if genset voltage
or frequency is not normal, controller issues alarm and shutdowns (LCD alarm page displays gen
alarm type);
i) When synchronous transfer is enabled, mains is normal and remote start (onload) input is active,
when warming up delay is over, if gen is normal, then gen status indicator is illuminated. Controller
issues close signal after waiting for genset and mains meeting the sync. requirement; after
controller detects gen close feedback, it immediately issues mains open signal, and genset takes
the load.
j) When synchronous transfer is enabled, mains abnormal start, and warming up delay is over, if gen
is normal, gen status indicator is illuminated; if genset voltage, frequency is up to the load
requirement, then gen close relay outputs, and genset takes the load. Gen supply indicator is
illuminated and genset enters normal running status.
NOTE: When Remote Start is applied to start (Off Load), the procedure is the same as above. Only when it is in

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procedure h) or i), generator close relay is deactivated, and moreover, genset is off load.
4.4.3 AUTOMATIC STOP SEQUENCE
a) In the process of genset normal running, if Mains recovers, genset enters "Mains Voltage Normal
Delay". When Mains normal is confirmed, Mains status indicator is illuminated and "Stop Delay" is
initiated. Or when remote start input is inactive, "Stop Delay" is initiated;
b) After stop delay is over:
1) Synchronous Transfer Disabled: Cooling Time is initiated, and at the same time gen close relay
is disconnected; after "switch transfer delay", Mains close relay outputs and Mains takes the load;
Gen supply indicator is extinguished and Mains supply indicator is illuminated;
2) Synchronous Transfer Enabled: Controller issues Mains close signal after waiting for genset and
Mains meeting sync. requirement; when Mains close feedback signal is detected, it immediately
issues Gen open signal; Gen supply indicator is extinguished, and Mains takes the load; Mains
supply indicator is illuminated and Cooling Time is initiated;
c) At entering "stop idle delay" (if configured), the idling speed relay is energized;
d) "ETS solenoid hold" begins, ETS relay is energized while fuel relay is de-energized, and complete
stop is detected automatically;
e) "Fail to stop delay" begins, and complete stop is detected automatically;
f) When generator is stopped completely, "after stop delay" will be initiated. Otherwise, controller
enters "fail to stop" period, and issues failed to stop alarm (If generator stops successfully after ‗fail to
stop‘ alarm has initiated, "after stop delay" will be initiated and the alarm will automatically be removed.);
g) Generator is placed into its standby mode after its ‗after stop delay‘;
4.5 MANUAL START/STOP OPERATION
a) HGM9420N_HGM9420LT: Manual mode is selected by pressing the button; a LED besides
the button will be illuminated to confirm the operation; then press button to start the gen-set; it can
detect crank disconnect condition and generator accelerates to high-speed running automatically. With
high temperature, low oil pressure, over speed and abnormal voltage during generator running,
controller can protect genset to stop quickly (please refer to c-i of 4.3.2 Automatic Start Sequence for
detailed procedures).
b) MANUAL STOP: Press and it can shut down the running generators. (Please refer to b-g of
4.3.3 Automatic Start Sequence for detailed procedures).

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5 CONTROLLER SWITCH CONTROL PROCEDURES
5.1 SWITCH CONTROL PROCEDURE FOR SYNC TRANSFER DISABLED
5.1.1 MANUAL TRANSFER PROCESS
When controller is in Manual mode, the switch control procedures will start through manual transfer
procedures. Users can control the loading transfer of ATS via pressing switch close/open keys.
Mains Enabled：If open detection is disabled, press gen close/open key ; if gen takes the load,
then switch open outputs; if load is disconnected, then gen closes; if Mains takes the load, then mains
opens; when open delay is over, gen closes. Press mains close/open key , if mains takes the load,
then switch open outputs; if load is disconnected, then Mains closes; if Gen takes the load, then gen
opens; when open delay is over, Mains closes.
If open detection is enabled and Mains taking load transfers to Gen taking load, first press Mains open
key , after open delay press Gen close key, and Gen closes (directly press Gen close key, no
action). If Gen loading transfers to Mains loading, the same procedure as above;
Mains Disabled: Press Gen close/open key , if Gen isn't taking the load, then Gen close outputs.
Press Gen close/open key , if Gen takes the load, then Gen open outputs.
5.1.2 AUTOMATICTRANSFER PROCEDURE
When controller is in Auto or Stop mode, the switch control procedure is automatic control procedure.
a) If input configuration is close status auxiliary input,
Mains Enabled:
•If open detection is enabled and Mains loading transfers to Gen loading, after open delay and
transfer interval delay, failed to transfer starts to detect at the same time of open output. Detection
time is due. if it fails to open, then Gen won't close; otherwise Gen closes. At the same time of Gen
close, failed to transfer starts to detect; detection time is due; if it fails to close, then wait for gen
close. If failed to transfer warning is enabled, close/open failure will issue warning signal. About Gen
loading transfering to Mains loading, the same is as above.
•If open detection is disabled and Mains loading transfers to Gen loading, after open delay and
transfer interval delay, Gen closes. At the same time of gen close, failed to transfer starts to detect.
detection time is due; if it fails to close, then wait for gen close; if failed to transfer warning is
enabled, warning signal will be issued. About Gen loading transfering to Mains loading, the same is
as above.
Mains Disabled
•When breaker open detection is enabled, gen on-load changes to generator off-load. After open
delay in the process of open output, transfer failure is detected. When the detection time is due, if
open fails, then open is waited for, otherwise open is completed. For generator off-load changing to