Smartgen HGM8151 User manual

HGM8151
GENSET PARALLEL CONTROLLER
USER MANUAL

HGM8151 Genset Parallel Controller User Manual Page 2 of 66
CONTENTS
1 OVERVIEW....................................................................................................................................................6
2 PERFORMANCE AND CHARACTERISTICS.................................................................................................7
3 SPECIFICATION ...........................................................................................................................................9
4 OPERATION............................................................................................................................................... 10
4.1 INDICATORS...................................................................................................................................... 10
4.2 KEY FUNCTION DESCRIPTION......................................................................................................... 10
4.3 LCD DISPLAY..................................................................................................................................... 11
4.3.1 MAIN DISPLAY.......................................................................................................................... 11
4.3.2 PARARMETERS SETTING MANUAL........................................................................................ 13
4.3.3 PARAMETER SETTING ............................................................................................................. 13
4.4 AUTO START/STOP OPERATION..................................................................................................... 14
4.5 MANUAL START/STOP OPERATION............................................................................................... 15
4.6 SWITCH CONTROL PROCEDURES................................................................................................... 15
4.6.1 Manual CONTROL PROCEDURES............................................................................................ 15
4.6.2 AUTO CONTROL PROCEDURES............................................................................................... 15
5 PROTECTIONS .......................................................................................................................................... 16
5.1 WARNING ALARMS .......................................................................................................................... 16
5.2 SHUTDOWN ALARMS....................................................................................................................... 18
5.3 TRIP AND STOP ALARMS................................................................................................................. 20
5.4 TRIP ALARM...................................................................................................................................... 21
6 WIRING CONNECTION ............................................................................................................................. 22
7 SCOPES AND DEFINITIONS OF PROGRAMMABLE PARAMETERS....................................................... 25
7.1 CONTENTS AND SCOPES OF PARAMETER SETTING .................................................................... 25
7.2 DEFINED CONTENTS OF PROGRAMMABLE OUTPUT PORTS ....................................................... 35
7.2.1 DEFINED CONTENTS OF PROGRAMMABLE OUTPUT PORTS .............................................. 35
7.2.2 DEFINED PERIOD OUTPUT....................................................................................................... 39
7.2.3 DEFINED COMBINATION OUTPUT .......................................................................................... 39
7.3 DEFINED CONTENTS OF PROGRAMMABLE INPUT PORTS (ALL GND (B-) ACTIVE) ................... 40
7.4 SELECTION OF SENSORS................................................................................................................. 42
7.5 CONDITIONS OF CRANK DISCONNECT SELECTION ...................................................................... 43
8 PARAMETERS SETTING........................................................................................................................... 44
9 SENSORS SETTING .................................................................................................................................. 45
10 COMMISSIONING ................................................................................................................................... 46
10.1 STEP 1: SINGLE UNIT DEBUGGING................................................................................................ 46
10.2 STEP 2: MANUAL PARALLEL OPERATION OFF-LOAD.................................................................. 46
10.3 STEP 3: MANUAL PARALLEL OPERATION ON-LOAD ................................................................... 46
10.4 STEP 4: AUTOMATIC PARALLEL OPERATION .............................................................................. 47
11 TYPICAL APPLICATION ......................................................................................................................... 48
12 POWER MANAGEMENT MODE.............................................................................................................. 50
13 NEL TRIP ILLUSTRATION....................................................................................................................... 51
14 INSTALLATION ....................................................................................................................................... 52

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14.1 ILLUSTRATION................................................................................................................................ 52
14.2 BATTERY VOLTAGE INPUT ............................................................................................................ 52
14.3 SPEED SENSOR INPUT ................................................................................................................... 52
14.4 OUTPUT AND EXPAND RELAYS..................................................................................................... 52
14.5 AC INPUT......................................................................................................................................... 52
14.6 WITHSTAND VOLTAGE TEST......................................................................................................... 53
15 GSM SHORT MESSAGE ALARM AND REMOTE CONTROL.................................................................. 53
15.1 GSM SHORT MESSAGE ALARM..................................................................................................... 53
15.2 GSM SHORT MESSAGE REMOTE CONTROL................................................................................. 53
16 CONNECTIONS OF CONTROLLER WITH J1939 ENGINE..................................................................... 55
16.1 CUMMINS ISB/ISBE ........................................................................................................................ 55
16.2 CUMMINS QSL9 .............................................................................................................................. 55
16.3 CUMMINS QSM11 (IMPORT) ......................................................................................................... 56
16.4 CUMMINS QSX15-CM570 .............................................................................................................. 56
16.5 CUMMINS GCS-MODBUS ............................................................................................................... 57
16.6 CUMMINS QSM11........................................................................................................................... 57
16.7 CUMMINS QSZ13............................................................................................................................ 58
16.8 DETROIT DIESEL DDEC III/IV .......................................................................................................... 58
16.9 DEUTZ EMR2 ................................................................................................................................... 59
16.10 JOHN DEERE ................................................................................................................................... 59
16.11 MTU MDEC ...................................................................................................................................... 59
16.12 MTU ADEC (SMART MODULE) ....................................................................................................... 60
16.13 MTU ADEC (SAM MODULE)............................................................................................................ 60
16.14 PERKINS .......................................................................................................................................... 61
16.15 SCANIA ............................................................................................................................................ 61
16.16 VOLVO EDC3 ................................................................................................................................... 61
16.17 VOLVO EDC4 ................................................................................................................................... 62
16.18 VOLVO-EMS2 .................................................................................................................................. 62
16.19 YUCHAI............................................................................................................................................ 63
16.20 WEICHAI .......................................................................................................................................... 63
17 ETHERNET INTERFACE.......................................................................................................................... 64
17.1 ETHERNET INTERFACE INTRODUCTION ...................................................................................... 64
17.2 NETWORK CLIENT MODE............................................................................................................... 64
17.3 CONTROLLER AND NETWORK CABLE CONNECTION.................................................................. 64
17.3.1 ILLUSTRATION.......................................................................................................................... 64
17.3.2 CONTROLLER CONNECT WITH PC WITH A LINE OF CABLE ................................................ 64
17.3.3 CONTROLLER AND PC CONNECTION VIA SWITCHBOARD (OR ROUTER)........................... 64
18 FAULT FINDING ...................................................................................................................................... 65

HGM8151 Genset Parallel Controller User Manual Page 4 of 66
Chinese trademark
English trademark
SmartGen ―make your generator smart
SmartGen Technology Co., Ltd
No. 28 Jinsuo Road
Zhengzhou City
P. R. China
Tel: [phone]
[phone] (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
Content
2016-07-24
1.0
Original release.
2022-10-31
1.1
Update company logo and manual format.

HGM8151 Genset Parallel Controller User Manual Page 5 of 66
This user manual only suits for HGM8151 controller.
Table 2 Notation Clarification
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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1OVERVIEW
HGM8151 genset parallel controller is especially designed for extremely high/low temperature
environment (-40~+70)°C. The controllers can operate reliability in extreme temperature conditions with
the help of VFD display or LCD and the components that resist extreme temperature. Controller has
strong ability of anti-electromagnetic interference, can be used under complex electromagnetic
interference environment. It is easy to maintain and upgrade due to the plug-in terminal. All display
information is Chinese (also can be set as English or other languages)
HGM8151 controller is designed for manual/auto parallel system generators with similar or different
capacity. Additionally, it is suitable for single unit constant power output and mains paralleling. It allows
automatic start/stop, parallel running, data measurement, alarm protection as well as remote control,
remote measurement and remote communication function. Utilizing the GOV (Engine Speed Governor)
and AVR (Automatic Voltage Regulator) control function, the controller is able to synchronize and share
load automatically; it can be used to parallel with other HGM8151 controller. It also monitors the engine,
indicating the operational status and fault conditions accurately. When abnormal condition occurs, it
splits bus and shuts down the genset, simultaneously the exact failure mode information is indicated by
the LCD display on the front panel. SAE J1939 interface enables the controller to communicate with
various ECU (ENGINE CONTROL UNIT) which fitted with J1939 interface. The powerful 32-bit
microprocessor contained within the module allows for precision parameters measuring, fixed value
adjustment, time setting and set value adjusting and etc..Majority parameters can be configured from
front panel, and all parameters can be configured by USB interface to adjust and by RS485 or
ETHERNET to adjust and monitor via PC. It can be widely used in all types of automatic gen-set control
system with compact structure, advanced circuits, simple connections and high reliability.

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2PERFORMANCE AND CHARACTERISTICS
─With ARM-based 32-bit SCM, high integration of hardware and more reliable.
─Graphics dot-matrix VFD with large screen, multilingual interface (including English, Chinese or
other languages) which can be chosen at the site, making commissioning convenient for factory
personnel.
─Improved LCD wear-resistance and scratch resistance due to hard screen acrylic.
─Silicon panel and pushbuttons for better operation in high/low temperature environment.
─RS485 communication port enables remote control, remote measuring, and remote
communication via ModBus protocol.
─ETHERNET communication port enables ETHERNET monitoring. (controller must be with
ETHERNET port).
─Equipped with SMS (Short Message Service) function. When genset is alarming, controller can
send short messages via SMS automatically to max. 5 telephone numbers. Besides, generator
status can be controlled and checked using SMS.
─Fitted with CANBUS port and can communicate with J1939 genset. Not only can monitor
frequently-used data (such as water temperature, oil pressure, engine speed, fuel consumption and
so on) of genset, but also control start, stop, raising speed and speed droop via CAN BUS port.
(need controller with CAN BUS port).
─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 Bus/mains.
─For Bus, controller has loss of phase and phase sequence wrong detection functions; For generator,
controller has over voltage, under voltage, over frequency, under frequency, over current, over
power, reverse power, loss of phase, phase sequence wrong detection functions.
─3 fixed analog sensors (temperature, oil pressure and liquid level).
─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
Fuel level (FL) %(unit)
Speed (SPD) r/min (unit)
Battery Voltage (VB) V (unit)
Charger Voltage (VD) V (unit)
Hour count (HC) can accumulate Max. 65535 hours.
Start times can accumulate Max. 65535 times
─Protection: automatic start/stop of the gen-set, ATS (Auto Transfer Switch) control with perfect
fault indication and protection function.

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─All output ports are relay output.
─Parameter setting: parameters can be modified and stored in internal FLASH 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 USB, RS485 or ETHERNET ports.
─Sensor curves are user-defined and multiple sensor curves (temperature, pressure and oil pressure)
can be used directly.
─Multiple crank disconnect conditions (rotate speed, oil pressure, generator frequency) are optional.
─Widely power supply range DC(8~35)V, suitable to different starting battery voltage environment.
─Event log, real-time clock, scheduled start & stop generator (can be set as start genset once a
day/week/month whether with load or not).
─Can be used as indicator (only indicate and alarm, relay without action).
─With maintenance function. Actions (warning, trip and stop, shutdown) can be set when
maintenance time out.
─All parameters used digital adjustment, instead of conventional analog modulation with normal
potentiometer, more reliability and stability.
─IP55 waterproofness level can be achieved with the help of rubber-ring gasket between shell and
control panel.
─Metal fixing clips enable perfect in high temperature environment.
─Modular design, self-extinguishing ABS plastic shell, pluggable terminal, built-in mounting，compact
structure with easy installation.
─Accumulative total run time and total electric energy of A and B. Users can reset it as 0 and
re-accumulative the value which make convenience to users to count the total value as their wish.

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3SPECIFICATION
Table 3 Technical Parameters
Parameter
Details
Working Voltage
DC8. 0V to 35. 0V, uninterruptible power supply
Overall Consumption
<4W (Standby mode: ≤2W)
AC Input:
3 Phase 4 Wire
3 Phase 3 Wire
Single Phase 2 Wire
2 Phase 3 Wire
AC 15V - 360V (ph-N)
AC 30V - 620V (ph- ph)
AC 15V - 360V (ph-N)
AC 15V - 360V (ph-N)
Alternator Frequency
50Hz/60Hz
Speed Sensor Voltage
1.0V to 24V (RMS)
Speed Sensor Frequency
Maximum 10,000Hz
Start Relay Output
16A DC28V power supply output
Fuel Relay Output
16A DC28V power supply output
Flexible Relay Output 1
7A DC28V power supply output
Flexible Relay Output 2
7A DC28V power supply output
Flexible Relay Output 3
7A DC28V power supply output
Flexible Relay Output 4
7A AC250V passive output
Flexible Relay Output 5
8A AC250V passive output
Flexible Relay Output 6
8A AC250V passive output
Case Dimensions
242mm×186mm×53mm
Panel Cutout
214mm×160mm
CT Secondary Current
Rated 5A
Working Temperature
(-40~+70)°C
Working Humidity
(20~93)%RH
Storage Temperature
(-40~+70)°C
Protection 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
0.85kg

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4OPERATION
4.1 INDICATORS
Table 4 Alarm Indicators
Alarm Type
Alarm Indicator
No Alarm
Indicator off
Warning
Slow flashing (1 time/s)
Trip Alarm
Slow flashing (1 time/s)
Shutdown Alarm
Fast flashing (5 times/s)
Trip and Stop Alarm
Fast flashing (5 times/s)
Status indicator: light on from crank disconnect to ETS and off during other periods.
Gens normal Indicator: light on when generator is normal; flashing when generator state is abnormal;
off when there is no generator power.
4.2 KEY FUNCTION DESCRIPTION
Table 5 Key Description
Icons
Keys
Description
Stop
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 mode.
Manual Mode
Press this key and controller enters in Manual mode.
Auto Mode
Press this key and controller enters in Auto mode.
Mute/Reset Alarm
Alarming sound off; If trip alarm occurs, pressing the button at
least 3 seconds can reset this alarm.
Close
Close breaker in manual mode.
Open
Open breaker in manual mode.
Set/Confirm
Enter setting interface.
Up/Increase
1) Screen scroll;
2) Up cursor and increase value in setting menu.
Down/Decrease
1) Screen scroll;
2) Down cursor and decrease value in setting menu.
Left
1) Screen scroll;
2) Left move cursor in setting menu.

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Icons
Keys
Description
Right
1) Screen scroll;
2) Right move cursor in setting menu.
Confirm
Confirm input content in setting menu.
Exit
1) Return to main menu;
2) Return to previous menu in setting menu.
NOTE: Press and simultaneously in manual mode 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 output will be deactivated, safety
on delay will be initiated.
WARNING! 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 and send all
information in the controller page of “ABOUT” to us.
4.3 LCD DISPLAY
4.3.1 MAIN DISPLAY
Main screen show pages; use to scroll the pages and to scroll the screen.
⚫Main Screen, including as below,
Part of status display
Gen: voltage, frequency
Load: current, active power, reactive power
Bus: voltage, frequency
Engine: speed, temperature, oil pressure
NOTE: Main screen will circulatory display if without scroll operation.
⚫Status, including as below,
Status of genset and ATS
⚫Engine, including as below,
Engine speed, engine temperature, engine oil pressure, fuel level, flexible sensor 1, flexible sensor 2,
battery voltage, charger voltage, engine accumulated run, accumulated start times and user A and B
accumulated running time.
NOTE: If connected with J1939 engine via CANBUS port, this page also includes: coolant pressure, coolant level, fuel
temperature, fuel pressure, inlet temperature, exhaust temperature, turbo pressure, total fuel consumption and so on.
(Different engine with different parameters).
⚫Generator, including as below,
Phase voltage, line voltage, frequency, phase sequence, each phase current, each phase and total
active power (positive and negative), each phase and total reactive power (positive and negative), each

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phase and total apparent power, each phase and average power factor (positive and negative),
accumulated energy, earth current, unbalanced current and user A and user B accumulated energy.
NOTE: Power factor shows as following,
Remark:
P stands for active power
Q stands for reactive power
Table 6 Power Factor Description
⚫Bus, including as below,
Phase voltage, line voltage, frequency, phase sequence.
⚫SNYC, including as below,
Synchronoscope, power percentage, and MSC status.
⚫Alarm
Display all alarm information, including warn, shutdown alarm, trip shutdown and trip but not shutdown.
NOTE: For ECU alarms and shutdown alarms, if the alarm information is displayed, check engine according to it,
otherwise, please check the generator manual according to SPN alarm code.
⚫Event log
Make records about all start/stop events (shutdown alarm, trip and stop alarm, manual /auto start or
stop) and the real time when alarm occurs and genset parameters.
⚫Others, including,
Time and Date, maintenance due, input/output ports status, network settings and etc.
⚫About, including,
Issue time of software and hardware version, product PD number.
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 is equal to one under excitation
generator.
COS<0C
P<0, Q<0
Output
Output
Load is equal to one over excitation
generator.
Remark:
1. Input active power, generator sends active power to load.
2. Output active power, load supplies electricity to generator.
3. Input reactive power, generator sends reactive power to load.
4. Output reactive power, load sends reactive power to generator.

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4.3.2 PARARMETERS SETTING MANUAL
Press key for more than 3s to enter user manual.
⚫Parameter
After entering the correct password (factory default password is 00318) you can enter parameter
settings interface.
⚫Language
Selectable Chinese, English and others (default: Espanol)
⚫Commissioning
On load, off load or custom commissioning can be chosen. Custom commissioning can configure on
load or not during commissioning, when to commissioning and select the mode after commissioning
(manual mode, auto mode and stop mode).
⚫Clear users’ accumulation
Can clear total run time A and B, total electric energy A and B.
4.3.3 PARAMETER SETTING
⚫Timer settings
⚫Engine settings
⚫Generator settings
⚫Load settings
⚫Breaker settings
⚫Temperature sensor settings
⚫Oil pressure sensor settings
⚫Liquid level sensor settings
⚫Flexible senor 1
⚫Flexible senor 2
⚫Switch input port settings
⚫output port settings
⚫Module settings
⚫Scheduling and maintenance settings
⚫GSM settings
⚫Synchronization settings
⚫Expansion module settings
NOTE: Press can exist parameter setting directly.

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4.4 AUTO START/STOP OPERATION
Auto mode is selected by pressing ; a LED beside it will illuminate to confirm the operation.
Automatic Start Sequence:
1) When “Remote Start” is active, “Start Delay” timer is initiated;
2) “Start Delay” countdown will be displayed on LCD;
3) When start delay is over, preheat relay energizes (if configured), “preheat delay XX s” information
will be displayed on LCD;
4) After the above delay, the Fuel Relay (if configured) is energized, and then one second later, the
Start Relay is engaged. The engine is cranked for a pre-set time. If the engine fails to fire during this
cranking attempt then the fuel relay and start relay are disengaged for the pre-set rest period;
“crank rest time” begins and wait for the next crank attempt.
5) Should this start sequence continue beyond the set number of attempts, the start sequence will be
terminated, the first line of LCD display will be highlighted with black and Fail to Start will be
displayed.
6) In case of successful crank attempt, the “Safety On” timer is activated, allowing Low Oil Pressure,
High Temperature, under speed and Charge Alternator Failure inputs to stabilize without triggering
the fault. As soon as this delay is over, “start idle” delay is initiated (if configured).
7) 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).
8) When “warming up delay” is over, if generator state is normal, its indicator will be illuminated. If
voltage and frequency has 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 LCD alarm page).
Remark: In case of “Remote Start (off Load)”, the procedure is the same, except for step NO. 8: the closing relay will NOT
be energized, generator will NOT accept load.
Automatic Stop Sequence,
1) When the “Remote start” signal is removed, the Stop Delay is initiated.
2) Once this “stop delay” has expired, the Generator Breaker will open and the “cooling delay” is then
initiated. After “transfer rest time”, close mains relay is energized. Generator indicator extinguish
while mains indicator lights.
3) During “stop idle” Delay (if configured), idle relay is energized.
4) “ETS solenoid hold” begins, ETS relay is energized while fuel relay is de-energized, complete stop is
detected automatically.
5) “Fail to stop delay”begins, complete stop is detected automatically.
6) When generator is stop completely, “after stop” delay will be initiated. Otherwise, fail to stop alarm
is initiated (If generator is stop successfully after “fail to stop” alarm has initiated, “after stop”
delay will be initiated and the alarm will be removed).

HGM8151 Genset Parallel Controller User Manual Page 15 of 66
7) Generator is placed into its standby mode after its “after stop” delay.
4.5 MANUAL START/STOP OPERATION
1) MANUAL START: it is selected by pressing the button; a LED besides the button will illuminate
to confirm the operation; then press button to start the gen-set; 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. Press and keys simultaneously to control breaker close or open.
(Please refer to No.3~8 of Automatic Start Sequence for detail procedures, only breaker
open/close ways are different).
2) MANUAL STOP: Press can shuts down the running generators. (Please refer to No.2~7 of
Automatic Start Sequence for detail procedures).
NOTE: In “manual mode”, the procedures of ATS please refer to Switch Control Procedure of generator in this
manual.
4.6 SWITCH CONTROL PROCEDURES
4.6.1 MANUAL CONTROL PROCEDURES
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 button to switch on or off.
Closing Operation: During genset normal running, press if generator voltage and frequency have
reached on-load requirements.
1) In case of single unit running, generator closing relay outputs;
2) In case of running in parallel:
a) If bus has no voltage, then the controller will send a closing signal to other waiting parallel
gensets and generator close relay will activate, this prevents other sets in the system from
attempting to close their own breakers at the same time.
b) If bus has voltage or other gensets are already closed, the controller will adjust speed and
voltage through GOV and AVR to synchronize the gensets to the bus; when synchronism
requirements has been achieved, breaker close signal will be initiated and the genset will be
paralleled to the bus. Once they are paralleled, the controller will control the generator to
gradually accelerate and share load with other paralleled gensets.
Opening operation: Press ,
1) In case of single unit running, the controller sends open breaker signal.
2) During parallel operation, the controller will transfer load to other generators, and then send an
opening signal.
4.6.2 AUTO CONTROL PROCEDURES
When controller is in auto mode, the switch control procedure is automatic control procedure.

HGM8151 Genset Parallel Controller User Manual Page 16 of 66
NOTE: The auxiliary close input should be configured necessarily and make sure the connection is correct.
5PROTECTIONS
5.1 WARNING ALARMS
Warning alarms does not lead to shutdown when warning signal is detected.
Table 7 Warning Alarms
No.
Type
Description
1
Over Speed
When the controller detects that the engine speed has exceeded the
pre-set value, it will initiate a warning alarm.
2
Under Speed
When the controller detects that the engine speed has fallen below the
pre-set value, it will initiate a warning alarm.
3
Loss of Speed Signal
When the controller detects that the engine speed is 0 and the action
select “Warn”, it will initiate a warning alarm.
4
Gen Over Frequency
When the controller detects that the genset frequency has exceeded the
pre-set value, it will initiate a warning alarm.
5
Gen Under Frequency
When the controller detects that the genset frequency has fallen below
the pre-set value, it will initiate a warning alarm.
6
Gen Over Voltage
When the controller detects that the generator voltage has exceeded
the pre-set value, the controller will initiate a warning alarm.
7
Gen Under Voltage
When the controller detects that the genset voltage has fallen below the
pre-set value, it will initiate a warning alarm.
8
Gen Over Current
When the controller detects that the genset current has exceeded the
pre-set value and the action select “Warn”, it will initiate a warning
alarm.
9
Fail to Stop
After “fail to stop” delay, if gen-set does not stop completely, it will
initiate a warning alarm.
10
Charge Alternator
Failure
When the controller detects that charger voltage has fallen below the
pre-set value, it will initiate a warning alarm.
11
Battery Over Volt
When the controller detects that start battery voltage has exceeded the
pre-set value, it will initiate a warning alarm.
12
Battery Under Volt
When the controller detects that start battery voltage has fallen below
the pre-set value, it will initiate a warning alarm.
13
Maintenance Due
When count down time is 0 and the action select “Warn”, it will initiate a
warning alarm.
14
Reverse Power
If reverse power detection is enabled, when the controller detects that
the reverse power value (power is negative) has exceeded the pre-set
value and the action select “Warn”, it will initiate a warning alarm.
15
Over Power
If over power detection is enabled, when the controller detects that the
over power value (power is positive) has exceeded the pre-set value and
the action select “Warn”, it will initiate a warning alarm.
16
ECU Warn
If an error message is received from ECU via J1939, it will initiate a

HGM8151 Genset Parallel Controller User Manual Page 17 of 66
No.
Type
Description
warning alarm.
17
Switch Fail Warn
When the controller detects that the breaker close or open failure
occurs, or input port did not set Gen Close Status input, it will initiate a
warning alarm.
18
Temperature Sensor
Open Circuit
When the controller detects that the temperature sensor is open circuit
and the action select “Warn”, it will initiate a warning alarm.
19
High Temperature
When the controller detects that engine temperature has exceeded the
pre-set value, it will initiate a warning alarm.
20
Low Temperature
When the controller detects that engine temperature has fallen below
the pre-set value, it will initiate a warning alarm.
21
Oil Pressure Sensor
Open Circuit
When the controller detects that the oil pressure sensor is open circuit
and the action select “Warn”, it will initiate a warning alarm.
22
Low Oil Pressure
When the controller detects that the oil pressure has fallen below the
pre-set value, it will initiate a warning alarm.
23
Level Sensor Open
Circuit
When the controller detects that the level sensor is open circuit and the
action select “Warn”, it will initiate a warning alarm.
24
Low Fuel Level
When the controller detects that the fuel level has fallen below the
pre-set value, it will initiate a warning alarm.
25
Flexible Sensor 1 Open
Circuit
When the controller detects that the flexible sensor 1 is open circuit and
the action select “Warn”, it will initiate a warning alarm.
26
Flexible Sensor 1 High
When the controller detects that the sensor 1 value has exceeded the
pre-set upper limit value, it will initiate a warning alarm.
27
Flexible Sensor 1 Low
When the controller detects that the sensor 1 value has fallen below the
pre-set lower limit value, it will initiate a warning alarm.
28
Flexible Sensor 2 Open
Circuit
When the controller detects that the flexible sensor 2 is open circuit and
the action select “Warn”, it will initiate a warning alarm.
29
Flexible Sensor 2 High
When the controller detects that the sensor 2 value has exceeded the
pre-set upper limit value, it will initiate a warning alarm.
30
Flexible Sensor 2 Low
When the controller detects that the sensor 2 value has fallen below the
pre-set lower limit value, it will initiate a warning alarm.
31
Digital Input
When digit input port is set as warning and the alarm is active, it will
initiate a warning alarm.
32
GSM Communication
Failure
When GSM is active and GSM module did not been detected by the
controller, controller will initiate a warning alarm.
33
Earth Fault
If earth fault detection is enabled, when the controller detects that the
earth fault current has exceeded the pre-set value and the action select
“Warn”, it will initiate a warning alarm.
34
Imbalance Current
When imbalance current detection enabled and controller detects that
unbalanced current value exceeded pre-set value, the action select
“Warn”, it will initiate a warning alarm.
35
Fail to sync
When the controller does not detect synchronization signal within the
pre-set synchronization time, it will initiate a warning alarm.

HGM8151 Genset Parallel Controller User Manual Page 18 of 66
No.
Type
Description
36
MSC Too Few Sets
When the controller detects fewer modules on the MSC link than the
minimum number configured in the unit, it will initiate a warning alarm.
There are 2 possible reasons: a) Communication line between the
controllers disconnects, which interrupts communication.
b) Other parallel gen-sets controllers have not been powered on.
37
Loss of Excitation
When loss of excitation detection is active and the controller detects
that the genset negative reactive power has exceeded the pre-set value,
it will initiate a warning alarm.
5.2 SHUTDOWN ALARMS
When controller detects shutdown alarm, it will send signal to open breaker and shuts down generator.
Table 8 Shutdown Alarms
No.
Type
Description
1
Emergency Stop
When the controller detects an emergency stop alarm signal, it will
initiate a shutdown alarm.
2
Over Speed
When the controller detects that the generator speed has exceeded the
pre-set value, it will initiate a shutdown alarm.
3
Under Speed
When the controller detects that the generator speed has fallen below
the pre-set value, it will initiate a shutdown alarm.
4
Loss of Speed Signal
When the controller detects that the engine speed is 0 and the action
select “Shutdown”, it will initiate a shutdown alarm.
5
Gen Over Frequency
When the controller detects that the genset frequency has exceeded
the pre-set value, it will initiate a shutdown alarm.
6
Gen Under Frequency
When the controller detects that the genset frequency has fallen below
the pre-set value, it will initiate a shutdown alarm.
7
Gen Over Voltage
When the controller detects that the generator voltage has exceeded
the pre-set value, the controller will initiate a shutdown alarm.
8
Genset Under Voltage
When the controller detects that the genset voltage has fallen below the
pre-set value, it will initiate a shutdown alarm.
9
Fail to Start
If the engine does not fire after the pre-set number of attempts, it will
initiate a shutdown alarm.
10
Gen Over Current
When the controller detects that the genset current has exceeded the
pre-set value and the action select “Shutdown”, it will initiate a
shutdown alarm.
11
Maintenance Due
When count down time is 0 and the action select “Shutdown”, it will
initiate a shutdown alarm.
12
ECU Shutdown
If an error message is received from ECU via J1939, it will initiate a
shutdown alarm.
13
ECU Fail
If the module does not detect the ECU data via J1939, it will initiate a
shutdown alarm.

HGM8151 Genset Parallel Controller User Manual Page 19 of 66
No.
Type
Description
14
Reverse Power
If reverse power detection is enabled, when the controller detects that
the reverse power value (power is negative) has exceeded the pre-set
value and the action select “Shutdown”, it will initiate a shutdown alarm.
15
Over Power
If over power detection is enabled, when the controller detects that the
over power value (power is positive) has exceeded the pre-set value
and the action select “Shutdown”, it will initiate a shutdown alarm.
16
Temperature Sensor
Open Circuit
When the controller detects that the temperature sensor is open circuit
and the action select “Shutdown”, it will initiate a shutdown alarm.
17
High Temperature
When the controller detects that engine temperature has exceeded the
pre-set value, it will initiate a shutdown alarm.
18
Oil Pressure Open
Circuit
When the controller detects that the oil pressure sensor is open circuit
and the action select “Shutdown”, it will initiate a shutdown alarm.
19
Low Oil Pressure
When the controller detects that the oil pressure has fallen below the
pre-set value, it will initiate a shutdown alarm.
20
Level Sensor Open
Circuit
When the controller detects that the level sensor is open circuit and the
action select “Shutdown”, it will initiate a shutdown alarm.
21
Flexible Sensor 1 Open
Circuit
When the controller detects that the flexible sensor 1 is open circuit and
the action select “Shutdown”, it will initiate a shutdown alarm.
22
Flexible Sensor 1 High
When the controller detects that the sensor 1 value has exceeded the
pre-set upper limit value, it will initiate a shutdown alarm.
23
Flexible Sensor 1 Low
When the controller detects that the sensor 1 value has fallen below the
pre-set lower limit value, it will initiate a shutdown alarm.
24
Flexible Sensor 2 Open
Circuit
When the controller detects that the flexible sensor 2 is open circuit and
the action select “Shutdown”, it will initiate a shutdown alarm.
25
Flexible Sensor 2 High
When the controller detects that the sensor 2 value has exceeded the
pre-set upper limit value, it will initiate a shutdown alarm.
26
Flexible Sensor 2 Low
When the controller detects that the sensor 2 value has fallen below the
pre-set lower limit value, it will initiate a shutdown alarm.
27
Digital Input
When digit input port is set as shutdown and the alarm is active, it will
initiate a shutdown alarm.
28
Earth Fault
When the controller detects that the earth fault current has exceeded
the pre-set value and the action select “Shutdown”, it will initiate a
shutdown alarm.
29
Imbalance Current
When Imbalance Current detection enabled and the controller detects
the imbalance current has exceeded the pre-set value and the action
select “Shutdown” it will initiate a shutdown alarm.
30
MSC Too Few Sets
When the controller detects fewer modules on the MSC link than the
minimum number configured in the unit, it will initiate a shutdown
alarm. There are 2 possible reasons: a) Communication line between
the controllers disconnects, which interrupts communication.
b) Other parallel gen-sets controllers have not been powered on.

HGM8151 Genset Parallel Controller User Manual Page 20 of 66
No.
Type
Description
31
MSC ID Error
When the controller detects the same ID on the MSC Bus, it will initiate
a shutdown alarm.
32
Gen Phase Sequence
Wrong
When the controller detects a phase sequence wrong, it will initiate a
shutdown alarm.
33
Volt Bus Phase
Sequence Wrong
When the controller detects a bus phase sequence wrong, it will initiate
a shutdown alarm.
34
Volt Bus Error
After synchronized-closing, when the controller detects the voltage
difference between generator and bus, it will initiate a shutdown alarm.
35
Loss of Excitation
When the controller detects that the genset negative reactive power
has exceeded the pre-set value, it will initiate a shutdown alarm.
5.3 TRIP AND STOP ALARMS
Once trip and stop occurred the controller will start the cooling delay and allow the engine to cool
before shutting down the engine.
Table 9 Trip and Stop Alarms
No.
Type
Description
1
Gen Over Current
When the controller detects that the genset current has exceeded the
pre-set value and the action select “Trip and Stop”, it will initiate a trip
and stop alarm.
2
Maintenance Due
When count down time is 0 and the action select “Trip and Stop”, it will
initiate a trip and stop alarm.
3
Reverse Power
If reverse power detection is enabled, when the controller detects that
the reverse power value (power is negative) has exceeded the pre-set
value and the action select “Trip and Stop”, it will initiate a trip and stop
alarm.
4
Over Power
If over power detection is enabled, when the controller detects that the
over power value (power is positive) has exceeded the pre-set value
and the action select “Trip and Stop”, it will initiate a trip and stop
alarm.
5
Digital Input
When digit input port is set as “Trip and Stop” and the alarm is active, it
will initiate a trip and stop alarm.
6
Earth Fault
If earth fault detection is enabled, when the controller detects that the
earth fault current has exceeded the pre-set value and the action select
“Trip and Stop”, it will initiate a trip and stop alarm.
7
Imbalance Current
If earth imbalance current detection is enabled, when the controller
detects the imbalance current has exceeded the pre-set value and the
action select “Trip and Stop”, it will initiate a trip and stop alarm.
8
Loss of Excitation
If loss of excitation fault detection is enabled, when the controller
detects that the genset negative reactive power has exceeded the
pre-set value, it will initiate a trip and stop alarm.