Smartgen HGM8100A User manual

HGM8100A GENSET CONTROLLER
(HGM8110A/HGM8120A)
(VFD DISPLAY)
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, Henan Province, China.
Tel: [phone]
[phone](overseas)
Fax: [phone]
Web: http://www.smartgen.com.cn
http://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
2013-01-29
1.0
Original release.
2013-04-12
1.1
Modify some details.
2013-06-17
1.2
Modify case dimension; Modify the contents of “Oil Pressure
Sensor”
2013-11-20
1.3
Add “Loss of Speed Signal Shutdown” in output port settings.
2013-12-23
1.4
Add function: Long pressing “ ” button can reset trip alarm.
2014-10-23
1.5
Change the “Working Conditions” and “Storage Condition”
temperature as (-40~+70)°C
2016-09-28
1.6
Modify the picture of mask and the graph of controller dimension.
2021-03-24
1.7
Modify the error in specification and other translation problems.

HGM8110A/8120A Genset Controller User Manual Page 3 of 57
This manual is suitable for HGM8110A/HGM8120A controller only.
Clarification of notation used within this publication.
Table 2 Notation Clarification
Sign
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 error operation may cause death, serious injury and significant
property damage.

HGM8110A/8120A Genset Controller User Manual Page 4 of 57
CONTENT
1 OVERVIEW...............................................................................................................................................6
2 PERFORMANCE AND CHARACTERISTICS ...........................................................................................7
3 SPECIFICATION....................................................................................................................................10
4 OPERATION ..........................................................................................................................................11
4.1 KEY FUNCTION...............................................................................................................................11
4.2 INDICATOR LIGHT..........................................................................................................................12
4.3 LCD DISPLAY..................................................................................................................................13
4.3.1 MAIN DISPLAY................................................................................................................... 13
4.3.2 BASIC PARAMETER SETTING MENU............................................................................... 14
4.3.3 ADVANCED PARAMETERS SETTING ............................................................................... 16
4.4 AUTOMATIC START/STOP OPERATION ......................................................................................18
4.5 MANUAL START/STOP OPERATION ............................................................................................19
4.6 GENSET CONTROLLER ATS CONTROL PROCEDURES ...............................................................20
4.7 VIEWING EVENT LOG.....................................................................................................................21
5 PROTECTION ........................................................................................................................................22
5.1 WARNING........................................................................................................................................22
5.2 SHUTDOWN ALARM ......................................................................................................................24
5.3 TRIP AND STOP ALARM................................................................................................................26
5.4 TRIP ALARM ...................................................................................................................................26
6 WIRING CONNECTION .........................................................................................................................27
7 SCOPES AND DEFINITIONS OF CONFIGURABLE PARAMETERS......................................................30
7.1 CONTENTS AND SCOPES OF PARAMETERS...............................................................................30
7.2 ENABLE DEFINITION OF PROGRAMMABLE OUTPUT PORTS 1-6 ..............................................38
7.2.1 DEFINED CONTENTS OF PROGRAMMABLE OUTPUT PORTS 1-6 ................................. 38
7.2.2 CUSTOM PERIOD OUTPUT ............................................................................................... 42
7.2.3 CUSTOM COMBINED OUTPUT ......................................................................................... 42
7.3 DEFINED CONTENTS OF CONFIGURABLE INPUT PORTS 1-6 ....................................................44
7.4 SELECTION OF SENSORS..............................................................................................................47

HGM8110A/8120A Genset Controller User Manual Page 5 of 57
7.5 CONDITIONS OF CRANK DISCONNECT SELECTION...................................................................48
8 PARAMETER EDITING..........................................................................................................................49
9 SENSORS SETTING ..............................................................................................................................51
10 COMMISSIONING .................................................................................................................................52
11 TYPICAL APPLICATION .......................................................................................................................53
12 INSTALLATION .....................................................................................................................................55
12.1 BATTERY VOLTAGE INPUT ...........................................................................................................55
12.2 SPEED SENSOR INPUT ..................................................................................................................55
12.3 OUTPUT AND EXPAND RELAYS....................................................................................................55
12.4 AC INPUT........................................................................................................................................55
12.5 WITHSTAND VOLTAGE TEST........................................................................................................56
13 FAULT FINDING ....................................................................................................................................57

HGM8110A/8120A Genset Controller User Manual Page 6 of 57
1 OVERVIEW
HGM8110A/8120A genset controllers are especially designed for extremely high/low temperature
environment (-40~+70)°C. The controllers can operate reliably in extreme temperature conditions
with the help of VFD display and the components that resist extreme temperature. All display
information is Chinese (English is optional). Operation information, status information and faults
information are all displayed which make commissioning convenience for factory personnel.
Controller can be used under complex electromagnetic interference environment with the strong
ability of anti-electromagnetic interference. Easy to maintain and upgrade due to the plug-in terminal.
HGM8110A/8120A genset controllers integrate digitization, intelligentization and network
technology which are used for genset automation and monitor control system of single unit to
achieve automatic start/stop, data measuring, alarm protection and “four remotes” (remote control,
remote measuring, remote communication and remote regulating).
HGM8110A/8120A genset controllers adopt micro-processor technology with precision parameters
measuring, fixed value adjustment, time setting and threshold adjusting and etc. Majority
parameters can be configured from front panel, and all parameters can be configured by RS485
interface (or RS232) to adjust via PC. It can be widely used in all types of automatic genset control
system with compact structure, advanced circuits, simple connections and high reliability.

HGM8110A/8120A Genset Controller User Manual Page 7 of 57
2 PERFORMANCE AND CHARACTERISTICS
♦HGM8100A series controller has two types:
HGM8110A: ASM (Automatic Start Module), used for single automation systems;
HGM8120A: AMF (Auto Mains Failure), updates based on HGM8110A, moreover, has mains
electric quantity monitoring and mains/generator automatic transfer control function, especially
for automatic system composed by generator and mains;
♦With ARM-based 32-bit SCM, highly integrated hardware, new reliability level;
♦Vacuum fluorescent display (VFD), selectable Chinese/English interface which can be chosen at
the site, making commissioning convenience for factory personnel;
♦Widely temperature range: (-40~+70)°C, can be used in extreme temperature environment;
♦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, current, power parameter and frequency of generator or
mains;
Mains
Line voltage (Uab, Ubc, and Uca) V (unit)
Phase voltage (Ua, Ub, and Uc) V (unit)
Frequency f Hz (unit)
Generator
Line voltage (Uab, Ubc, and Uca) V (unit)
Phase voltage (Ua, Ub, and Uc) V (unit)
Frequency f Hz (unit)
Load
3-phase Current Ia, Ib, Ic A (unit)
Active power (P) kW (unit)
Apparent power (S) kVA (unit)
Power factor (λ)
Accumulate total generator power (W) kWh (unit)
♦For Mains, controller has over and under voltage, over and under frequency, loss of phase and
reverse phase sequence detection functions; For generator, controller has over and under voltage,
over and under frequency, over current, over and reverse power, loss of phase, reverse phase
sequence detection functions;
♦3 fixed analog sensors (temperature, oil pressure and liquid level);

HGM8110A/8120A Genset Controller User Manual Page 8 of 57
♦2 configurable sensors can be set as sensor of temperature, oil pressure or fuel level;
♦Precision measure and display parameters about Engine,
Temp. (WT) °C/°F both be displayed
Oil pressure (OP) kPa/psi/bar all be displayed
Speed (RPM)
Voltage of Battery (VB) V (unit)
Voltage of Charger (VD) V (unit)
Hour count (HC) can accumulate to max. 65535 hours.
Start times can accumulate to max. 65535 times.
♦Protection: automatic start/stop of the gen-set, ATS (Auto Transfer Switch) control with perfect
fault display and protection function;
Fault display and protection items:
High temperature alarm
High temperature shutdown
Low oil pressure alarm
Low oil pressure shutdown
Over speed shutdown
Low fuel level warn
Battery voltage high warn
Battery voltage low warn
Load over current shutdown
Fail to start alarm
Fail to stop alarm
Emergency stop alarm
Oil pressure sensor open circuit alarm
Temperature sensor open circuit alarm
♦All output ports are relay-out;
♦Parameter setting: parameters can be modified and stored in internal EEPROM memory and
cannot be lost even in case of power outage; most of them can be adjusted using front panel of
the controller and all of them can be modified using PC via RS485/RS232 ports;
♦More kinds of curves of temperature, oil pressure, fuel level can be used directly and users can
define the sensor curves by themselves;
♦Multiple crank disconnect conditions (speed sensor, oil pressure, generator frequency) are
optional;

HGM8110A/8120A Genset Controller User Manual Page 9 of 57
♦Real time clock and run time accumulation function. 99 pieces of event logs can be circularly
stored and inquired on the spot; also can be print or be inquired via PC;
♦Scheduled start & stop generator (can be set as start genset once a week/month);
♦With maintenance function. Actions (warning, shutdown or trip and stop) can be set when
maintenance time out;
♦Can be used on pumping units and as an indicating instrument (indicate and alarm are enable
only, relay is inhibited);
♦Accumulative total electric energy. Users can reset it and re-accumulate the value which make
convenience to users to count the total value as their wish;
♦Widely power supply range: DC (8~35)V, suitable to12/24V starting battery voltage environment;
♦With international standard MODBUS communication protocol, better error checking capability,
and with RS232 and RS485 (coupling isolation) communication interface, can realize functions of
remote control, remote measuring, remote communication and remote regulating, facilitate
remote centralized monitoring of genset;
♦Waterproof security level IP55 due to rubber seal installed between the controller enclosure and
panel fascia;
♦Metal fixing clips enable perfect in high temperature environment;
♦Modular design, pluggable connection terminals and embedded installation way; compact
structure with easy mounting.

HGM8110A/8120A Genset Controller User Manual Page 10 of 57
3 SPECIFICATION
Table 3 Technical Parameters
Item
Content
Operating Voltage
DC8. 0V to 35. 0V, Continuous Power Supply
Power Consumption
<6W (Standby mode: ≤3W)
Alternator Input Range
3-Phase 4 Wire
3-Phase 3 Wire
Single-Phase 2 Wire
2-Phase 3 Wire
AC20V - AC360V (ph-N)
AC30V - AC600V (ph-ph)
AC20V - AC360V (ph-N)
AC20V - AC360V (ph-N)
Alternator Frequency
50Hz/60Hz
Speed Sensor Voltage
1.0V to 24.0V (RMS)
Speed Sensor Frequency
10,000 Hz (max)
Start Relay Output
16A DC28V at supply output
Fuel Relay Output
16A DC28V at supply output
Aux. Output 1
16A DC28V at supply output
Aux. Output 2
16A DC28V at supply output
Aux. Output 3
16A DC28V at supply output
Aux. Output 4
16A AC250V passive
Gen Close Relay
Aux. Output 5
16A AC250V passive
Mains Close Relay
Aux. Output 6
16A AC250V passive
Overall Dimensions
243.7mm x 176.2mm x 51.2mm
Panel Cutout
214mm x 160mm
C. T. Secondary
5A (rated)
Working Conditions
Temperature: (-40~+70)°C Humidity: (20~93)%RH
Storage Condition
Temperature: (-40~+70)°C
Protective Level
IP55 Gasket
Insulation Intensity
Apply AC2.2kV voltage between high voltage terminal and low
voltage terminal;
The leakage current is not more than 3mA within 1min.
Weight
0.80kg

HGM8110A/8120A Genset Controller User Manual Page 11 of 57
4 OPERATION
4.1 KEY FUNCTION
Table 4 Key Descriptions
Key
Name
Description
Stop/Reset
Stop running generator in Auto/Manual mode; Lamp test (press
at least 3 seconds); Reset alarm in stop mode; During stopping
process, press this button again to stop generator immediately.
Start
Start genset in Manual/Test mode.
Manual mode/
Config. ‘-’
Pressing this key will set the module into manual mode. In
setting parameter status, press this key will decrease setting
value.
Test mode/
Config. ‘+’
Pressing this key will set the module into test mode (only for
HGM8120A). In setting parameter status, press this key will
increase setting value.
Auto mode/Confirm
Pressing this key will set the module into auto mode. In setting
parameter status, press this key will right shift cursor or confirm
setting value.
Event log
Pressing this key will view shutdown history records. Again
pressing this key will exit.
When there is trip alarm occurs, pressing and holding this button
for more than 3 seconds can reset the alarm.
Page Down
Screen scroll in parameters interface or event log interface.
NOTE: In manual mode, pressing and simultaneously will force generator to crank. Successful start
will not be judged according to crank disconnect conditions, operator will have to crank the starter motor manually;
when operator decides that the engine has fired, he/she should release the button and start relay will be deactivated,
safety on delay will start.
NOTE: Pressing and holding for more than 3 seconds enters basic parameter configuration menu;
NOTE: Pressing and enters advanced parameter configuration menu;
CAUTION: Default password is 00318, user can change it in case of others change the advanced parameters setting.
Please clearly remember the password after changing. If you forget it, please contact Smartgen services.

HGM8110A/8120A Genset Controller User Manual Page 12 of 57
4.2 INDICATOR LIGHT
Table 5 Alarm Indicator
Alarm Type
Alarm Indicator
Warning
Slow flashing (1 time per sec)
Trip Alarm
Slow flashing (1 time per sec)
Shutdown Alarm
Fast flashing (5 times per sec)
Trip and Stop Alarm
Fast flashing (5 times per sec)
Generator normal light: It is light on when generator is normal; flashing when generator state is
abnormal; off when there is no generator power.
Mains normal light: It is light on when mains is normal; flashing when mains state is abnormal; off
when there is no mains power.
Generator close light: It is light on when generator close; off when generator open.
Mains close light: It is light on when mains close; off when mains open. (HGM8120A)

HGM8110A/8120A Genset Controller User Manual Page 13 of 57
4.3 LCD DISPLAY
4.3.1 MAIN DISPLAY
Main screen is used to display real time data of all parameters, use to scroll the screen and
view parameters.
★Status, including as below,
Status of genset, mains (HGM8120A), and ATS.
★Mains, including as below
Phase voltage, Line voltage, frequency.
NOTE: HGM8110A has no mains status screen.
★Gen, including as below,
Phase voltage, Line voltage, frequency.
★Load, including as below,
Each phase current, total active power (positive and negative), total reactive power (positive and
negative), total apparent power, average power factor (positive and negative), accumulated energy (kWh,
kVarh, kVAh).
NOTE: When mains close indicator lights, count mains active and reactive power, apparent power, power factor, but
accumulate electric energy. Counting the generator active and reactive power, apparent power, power factor, and
accumulate electric energy under other conditions.
NOTE: Power factor shows as following,
Remark:
P stands for active power
Q stands for reactive power

HGM8110A/8120A Genset Controller User Manual Page 14 of 57
Table 6 Power Factor
NOTE:
1. Input active power, generator or mains supplies electricity to load;
2. Output active power, load supplies electricity to generator or mains;
3. Input reactive power, generator or mains sends reactive power to load;
4. Output reactive power, load sends reactive power to generator or mains.
★Engine, including as below,
Speed, engine temperature, engine oil pressure, liquid (fuel) level, flexible sensor 1, flexible sensor 2,
battery voltage, charger voltage, accumulated run time, accumulated start times.
★Alarm:
Display all kinds of alarm information, such as Gen Overvoltage, Gen Undervoltage, Gen Over Frequency,
Gen Under Frequency and so on.
★Event log
Records all start/stop events (shutdown alarm, trip and stop alarm, manual/auto start or stop) and the
real time when alarm occurs.
Example:
4.3.2 BASIC PARAMETER SETTING MENU
Basic parameters setting including as following,
★Mains Rated Voltage (HGM8120A)
★Mains Rated Frequency (HGM8120A)
★Crank Disconnect Condition
★Flywheel Teeth
Power Factor
Conditions
Active Power
Reactive Power
Remark
COS>0L
P>0, Q>0
Input
Input
Load is inductive resistance.
COS>0C
P>0, Q<0
Input
Output
Load is capacitance resistance.
COS<0L
P<0, Q>0
Output
Input
Load equal to one under
excitation generator
COS<0C
P<0, Q<0
Output
Output
Load equal to one over excitation
generator.
Gen
UL-L 0 0 0V
UL-N 0 0 0V
F = 0.0Hz 0rpm
Stop Mode
Load
Current 0.0 0.0 0.0A
Power 0.0kW 0.0 kVA
cosΦ = 0.00 0.0 kVar
Gen Overvoltage Warn

HGM8110A/8120A Genset Controller User Manual Page 15 of 57
★Rated Speed
★Gen Rated Voltage
★Gen Rated Frequency
★CT Ratio
★Rated Current
★Rated Power
★Battery Voltage
★Date and Time
★Start Delay
★Stop Delay
★Pre-heat Delay
★Cranking Time
★Crank Rest Time
★Safety On Delay
★Start Idle Time
★Warming Up Time
★Cooling Time
★Stop Idle Time
★ETS Solenoid Hold
★Fail to Stop Delay
★After Stop Time
Example:
Basic Parameter Setting
>Return
>Mains Rated Frequency
Form 1: are used for changing the setting
contents. to enter settings (form 2), to exit setting.
>Crank Disconnect Condition
Crank Disconnect Condition
Form 2: Press to enter settings (form 3); press
or or to return to previous menu. (form 1).
2: Speed sensor + Gen freq.
Crank Disconnect Condition
Form 3: are used for changing the setting
contents. Confirm setting (form 2), exit setting
(form 2).
2: Speed sensor + Gen freq.

HGM8110A/8120A Genset Controller User Manual Page 16 of 57
4.3.3 ADVANCED PARAMETERS SETTING
Advanced parameter setting including as following,
★Mains settings
★Timer settings
★Engine settings
★Generator settings
★Load settings
★ATS settings
★Analog sensor settings
★Input port settings
★Output port settings
★Module settings
★Scheduling and maintenance settings
Example,
Advanced Parameters Setting
>Mains
>Timers
>Engine
Form 1: are used for changing the setting
contents. to enter settings (form 2), to exit setting.
>Generator
Generator Setting
>Return
Form 2: are used for changing the setting contents
(form 3). Select “Return” and press to return to previous
menu (form 1). Press also can return to previous menu
(form 1)
>AC System
>Poles
>Rated Voltage
Generator Setting
>Gen Undervolt Shutdown
>Gen Overfreq. Shutdown
>Gen Underfreq. Shutdown
Form 3: are used for changing the setting
contents. Confirm setting (form 4), exit setting
(form 1).
>Gen Overvolt Warn
Gen Overvolt Warn
Sel: Disable
Form 4: Press to enter settings (form 5); Press or
or to return to previous menu. (Form 3).
Set Value: 00110%
Return Value: 00108%
Delay: 00005

HGM8110A/8120A Genset Controller User Manual Page 17 of 57
Gen Overvolt Warn
Form 5: are used for changing the setting contents
(form 6). Confirm setting (form 7), return to
previous menu (form 4)
Sel: Disable
Set Value: 00110%
Return Value: 00108%
Delay: 00005
Gen Overvolt Warn
Form 6: are used for changing the setting contents
(form 5). Confirm setting (form 7), return to
previous menu (form 4)
Sel: Disable
Set Value: 00110%
Return Value: 00108%
Delay: 00005
Gen Overvolt Warn
Sel: Enable
Set Value: 00000
Return Value: 00108%
Delay: 00005
Form 7: are used for changing the setting contents
(form 5). Confirm setting, return to previous menu
(form 4).
Gen Overvolt Warn
Sel: Enable
Set Value: 0000
Return Value: 00108%
Delay: 00005
Form 8: are used for changing the setting contents.
Confirm setting (form 4), return to previous menu
(form 4).
NOTE: Pressing and holding for a long time can exit setting directly during setting.

HGM8110A/8120A Genset Controller User Manual Page 18 of 57
4.4 AUTOMATIC START/STOP OPERATION
Press , its indicator lights, and controller enters Auto mode.
Starting Sequence,
1. HGM8120A: When Mains is abnormal (over and under voltage, over and under frequency), it enters
into mains “abnormal delay” and VFD displays count down time. When mains abnormal delay is
over, it enters into “start delay”;
2. HGM8110A:Generator enters into “start delay” as soon as “Remote Start” is active;
3. “Start delay”timer is shown on VFD display;
4. When start delay is over, preheat relay outputs (if this be configured), “preheat delay XX s” is shown
on VFD;
5. When preheat delay is over, fuel relay outputs 1s and then start relay output; if engine crank fails
during “cranking time”, the fuel relay and start relay deactivated and enter into “crank rest time” to
wait for next crank;
6. If engine crank fails within setting times, the controller sends “Fail to start”signal and “Fail to start”
message appears on VFD alarm page;
7. In case of successful crank attempt, “safety on” timer starts. During this period, low oil pressure,
high water temperature, under speed, charge failure alarms and Aux. input (if configured) are
disabled. As soon as this delay is over, “start idle delay” is initiated (if configured);
8. During “start idle delay”, under speed, under frequency, under voltage alarms are inhibited. When
this delay is over, “warming up delay” starts (if configured);
9. When “warming up delay” is over, if generator state is normal, its indicator will be illuminated. If
voltage and frequency have reached on-load requirements, the closing relay will be energized,
generator will accept load, generator power indicator will turn on, and generator will enter Normal
Running state; if voltage and frequency are abnormal, the controller will initiate alarm (alarm type
will be displayed on VFD).
NOTE: HGM8110A: In case of “Remote Start (off Load)”, the procedure is the same, except for step No. 9: generator
close relay will NOT be energized, genset will NOT accept load.
Stopping Sequence
1) HGM8120A: If mains turns normal during genset is running, it enters into mains voltage “normal
delay” and its indicator illuminates after mains is confirmed normally, “stop delay” is beginning;
2) HGM8110A: Genset enters into “stop delay” as soon as “Remote Start” input is inactive;
3) HGM8120A: After stop delay ends, it enters “cooling time”, and generator close relay is
disconnected, after “switch transfer delay”, mains close relay output, mains is on-load, generator

HGM8110A/8120A Genset Controller User Manual Page 19 of 57
power supply indicator is extinguishing, and mains power supply indicator is illuminated;
4) Idle relay is output when the controller enters “stop idle delay”;
5) Enter into “ETS delay” and ETS relay is active. Fuel relay output is disconnected;
6) Genset can automatically judge if it is steady when the controller enters “Genset after stop time”;
7) After genset stops steadily, enter generator standby status; if genset does not stop, then controller
will alarm (VFD screen display stop failure warn);
8) Enter “generator at rest” as soon as “after stop time” is over.
4.5 MANUAL START/STOP OPERATION
1) HGM8120A: “Manual Mode” is active when press key and its indicator illuminates. Press
key, then controller enters “Test Mode” and indicator illuminates. Under the both modes, press
key to start genset, and it automatically detects if it starts successfully and accelerates to high
speed running. With high temperature, low oil pressure, over speed and abnormal voltage during
diesel genset running, controller can protect genset to stop effectively and quickly (please refer to
No.4~9 of Starting Sequence for more details). Under “Manual Mode ”, genset on-load is
decided by whether mains is normal or not. If mains is normal, loading switch isn’t transferred;
while mains is abnormal, loading switch is transferred into generator’s side. Under “Test Mode
”, after genset runs well in high speed, no matter mains is normal or not, loading switch must
be transferred into Generator’s side.
2) HGM8110A: “Manual Mode” is active when press key, and its indicator is illuminated. Then
press key to start generator, it automatically detects if it is started successfully and genset
automatically accelerates to high speed running. With high temperature, low oil pressure, over
speed and voltage abnormal during diesel genset running, controller can protect genset to stop
effectively and quickly (please refer to No.4~9 of Starting Sequence for more details). After genset
runs well in high speed, if remote start signal is active, controller will send signal of Generator close;
otherwise, it will not.
3) Manual stop: press key can shut down the running genset (please refer to No.3~7 of
Stopping Sequence for more details).

HGM8110A/8120A Genset Controller User Manual Page 20 of 57
4.6 GENSET CONTROLLER ATS CONTROL PROCEDURES
1. HGM8120A ATS CONTROL PROCEDURES
1) If input port is configured as Closed Auxiliary
A. If “Open breaker detect” is “Enable”
When transferring load from mains to generator, controller begins detecting “fail to transfer”, then the
open delay and transfer rest delay will begin. When detecting time out, if switch open failed, the
generator will not switch on, otherwise, generator switch on. Detecting transfer failure while generator
switch on. When detecting time out, if switch on fail, it needs to wait for generator switch on. If transfer
failed and warning is “Enable”, there is alarming signal whatever switch on or off failure.
The way to transfer from generator load to mains load is as same as above.
B. If “Open breaker detect” is “Disable”
Mains load is transferred into generator load, after the delay of switch off and transfer interval,
generator switch on. Detecting transfer fail while generator switch on. After detecting time out, if switch
on fail, then wait for generator switch on. If transfer fails and warning is “Enable”, there is alarming
signal.
2) If input port is not configured as Close Auxiliary
Mains load is transferred into generator load, after switch off and transfer interval delay, generator
switch on.
The way to transfer generator load to mains load is as same as above.
2. HGM8110A ATS CONTROL PROCEDURES
1) If input port is configured as Closed Auxiliary
A. If “Open breaker detect” is “Enable”
Generator load is transferred into generator un-load, after the delay of switch off, detecting transfer
failure while switch off output. When detecting time out, if switch off failed, it will wait for switch off.
Otherwise, switch off is completed.
Generator unload is transferred into generator load, after the delay of switch on, detecting transfer
failure while switch on outputting. When detecting time out, if switch on failed, it will wait for switch on.
Otherwise, switch on is completed.
If transfer failed and warning is “Enable”, there is alarming signal whatever switch on or off failure.
B. If “Open breaker detect” is “Disable”
Generator load is transferred into generator unload, after the delay of switch off, switch off is
completed.
Generator unload is transferred into generator load, after the delay of switch on, detecting transfer