Smartgen MGC120 User manual

MGC120
PETROL 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
Henan Province
P. R. China
Tel: [phone]
0086-371-67991553/67992951
0086-371-67981000(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 inanymedium byelectronic means orother) 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.
Version Hsitory
Date
Version
Content
2017-11-07
1.0
Original release.

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CONTENT
1 OVERVIEW ............................................................................................................................................. 4
2 PERFORMANCEAND CHARACTERS.................................................................................................. 4
3 SPECIFICATION..................................................................................................................................... 5
4 OPERATION............................................................................................................................................ 6
4.1 CONTROL PANEL............................................................................................................................ 6
4.2 INDICATOR DESCRIPTION ............................................................................................................ 6
4.3 PUSH BUTTONS.............................................................................................................................. 7
4.4 AUTO START/STOP OPERATION................................................................................................... 7
4.5 MANUAL START/STOP OPERATION ............................................................................................. 8
4.6 AIR FLAP CONTROL ....................................................................................................................... 8
4.7 ATS SWITCHING CONTROL........................................................................................................... 8
5 PROTECTION......................................................................................................................................... 9
6 CONNECTION ........................................................................................................................................ 9
7 DEFINITION AND RANGE OF PARAMETERS.....................................................................................11
7.1 PARAMETER SETTINGS ...............................................................................................................11
7.2 PROGRAMMABLE OUTPUTS CONTENT DEFINITION.............................................................. 14
7.3 PROGRAMMABLE INPUTS CONTENT DEFINITION .................................................................. 14
8 CONTROLLER FUNCTION SETTINGS............................................................................................... 15
9 COMMISSIONING ................................................................................................................................ 16
10 TYPICALAPPLICATION..................................................................................................................... 16
11 INSTALLATION.................................................................................................................................... 18
11.1 FIXING CLIPS............................................................................................................................... 18
11.2 OVERALLAND CUTOUT DIMENSIONS..................................................................................... 18
12 FAULT FINDING.................................................................................................................................. 19

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1OVERVIEW
MGC120 Petrol Genset Controller belongs to AMF module, which is suit for single petrol genset
automation and monitoring control. According to data measuring, it allows auto start/stop genset, alarm
protection and ATS switching control functions. The controller fits with LED nixie tube display and
button-press operation. Most parameters can be adjusted from the front pannel of controller and all
parameters can be changed from PC sofware via LINK port. It is can be widely used in various petrol
genset with easy operation, reliable work, compact structure and easy mounting.
2PERFORMANCE AND CHARACTERS
——Collecting single phase voltage of mains and generator, which suit for 50Hz/60Hz AC system.
——Switchable displayed parameters:
Mains voltage (V)
Generator voltage (V)
Engine cylinder temperature (℃)
Generator frequency (Hz)
Battery voltage (V)
Accumulated running time(H)
——With mains electricity monitoring and AMF functions;
——Protection function for generator under/over volt, under/over frequency, low oil pressure, and
fail to start protection functions; when in protection, LED indicates alarm, and goes shutdown
protection;
——Using stepper motor and programmable outputs to control air flap (close/open air flap
according to the cylinder temperature);
——Speed signals derive from ignition coil primary (diode need to be in series);
——Three crank disconnect conditions can be optional (generator frequency, speed, and speed +
gen frequency);
——2 discrete inputs, which default set as remote start input and low oil pressure input;
——3 fixed relay outputs (fuel output, start output and ignition control);
——2 programmable transistor outputs, which can be set as common alarm output, ETS control,
idle control , preheat control, close GCB output, close MCB output and air flap blocked output;
——LINK communication port (SmartGen specialized SG72 adapter): via LINK port to realize
controller parameter settings, remote monitoring control and firmware upgrade functions.
——Nixie tube and LED display with button-press operation;
——Silicone panel and buttons with a premium performance to working in the extremely high/low
temperature;
——Screen protection adopt hard screen acrylic material;
—— Modular design, anti-flaming ABS plastic enclosure, embedded installation way; compact
structure with easy mounting;

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3SPECIFICATION
Items
Contents
Working Voltage
DC12V power supply system
Overall Consumption
Regular working:<2W(stepper motor is excluded)
Standby mode:<0.5W
AC Volt Input:
Mains Single Phase
Generator Single Phase
AC 30V - AC 360V (ph-N)
AC 30V - AC 360V (ph-N)
Alternator Frequency
50Hz/60Hz
Starter Relay Output
10ADC30V DC B+ supply output
Fuel Relay Output
10ADC30V DC B+ supply output
Ignition Relay Output
10ADC30V DC B- supply output
Flexible Transistor Output
1A connect to DC B+ supply output
Stepper Motor Recommended
24BYJ48-12V(stepper angle 5.625° reduction ratio 16:1)
Overall Dimensions
95mm x 86mm x 46.5mm
Panel Cutout
78mm x 66mm
Working Condition
Temperature:(-25~+70)°C Humidity:(20~93)%RH
Storage Condition
Temperature:(-25~+70)°C
Protection Level
Front panel IP55
Insulation
Apply AC2.2kV voltage between high voltage terminal and low voltage
terminal; The leakage current is not more than 3mA within 1min.
Weight
0.15kg

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4OPERATION
4.1 CONTROL PANEL
Start indicator: it is always light from genset start to normal running, and in other status, the indicator
will extinguish.
Stop indicator: it is blink when genset enter into stop sequence; always light when stop and in other
status, the indicator will extinguish.
4.2 INDICATOR DESCRIPTION
Icon
Defination
Icon
Defination
Mains voltage indication
Generator under/over frequency alarm
shutdown
Generator voltage indication
Generator under/over voltage alarm shutdown
Engine cylinder temperature
indication
Low oil pressure alarm shutdown
Generator frequency indication
Fail to start
Battery voltage indication
Generator indication
Total running time indication
Mains indication
Note:
1) Generator indicator: light-on when generator is normal running; blink when generator is abnormal;
light-off when generator is unavailable.
2) Mains indicator: light-on when mains is normal; blink when mains is abnormal; light-off when mains is
unavailable.

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4.3 PUSH BUTTONS
Buttons Description
Icons
Function
Description
Stop/Reset
Stop the running genset both in manual mode and in auto mode, and
simultaneously controller switches to the manual mode.
In stop process, re-press this button to stop generator immediately.
In alarm status, press this button to reset any shutdown alarms.
In stop mode, press this button for more than 3s to test if the nixie tube
and panel LED indicators are OK.
In setting menu, press this button to exit this menu.
Auto/Manual Switch
Increased value
Press this key, if auto indicator lights on, controller states in auto mode; if
auto indicator lights off, controller states in manual mode.
In setting menu, press this key to downturn or increase the parameter
value
Start
Decreased value
In manual mode, press this key to start genset.
In setting menu, press this key to upturn or decrease the parameter value
Down
Switch display contents of nixie tube.
Pressing this button for more than 3 seconds to entry the parameter
setting menu;
In setting menu, press this button to modify and save value.
4.4 AUTO START/STOP OPERATION
After pressing key, indicator besides this key lights on, which stands for generator-set states
in auto mode.
Auto Start Sequence
1) When remote start signal is active or mains failure(over/under voltage) delay is expired, “Start
Delay” timer is initiated;
2) When start delay is over, preheat relay energizes (if configured), “Preheat delay” is initiated;
3) After the above delay, the Fuel Relay is energized, and then one second later (if configured), the
Start Relay is engaged and the Preheat Relay switch off. If genset 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.
4) Should this start sequence continue beyond the set number of attempts, the fail to start
indicator will be illuminated.
5) In case of successful crank attempt, the “Safety On” timer is activated, allowing Low Oil
Pressure Input is inhibited. As soon as this delay is over, “start idle” delay is initiated (if
configured).
6) During “start idle” delay, under frequency and under volt alarms are inhibited. When this delay is
over, “warming up” delay is initiated (if configured).
7) After the “warming up” delay, genset will enter into Normal Running status. If genset voltage or
frequency is abnormal, corresponding alarms will be initiated.

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Auto Stop Sequence
1) When remote start signal is invalid or mains normal delay is expired, “Stop Delay” timer is
initiated;
2) Once this “stop delay” has expired, the “Cooling Down Delay” is then initiated;
3) During “Stop Idle” Delay (if configured), idle relay is energized.
4) “ETS Solenoid Hold” begins, ignition control relay is energized while fuel relay is de-energized,
and then genset entry standby status.
Note:
1) Press stop key in auto start status, generator-set will stop and enter into manual mode simultaneously.
2) Total running timer initiate when generator meet crank disconnected conditions, meanwhile, the last
decimal point of the nixie tube flashes to indicate that the generator is running.
4.5 MANUAL START/STOP OPERATION
After pressing key, indicator besides this key lights off, which stands for generator-set states
in manual mode.
a) Manual start: press button to start genset (Please refer to Start Sequence 2-7). With low
oil pressure and voltage abnormal during genset running, controller can protect it to stop quickly.
b) Manual Stop: Press button to stop the running genset (Please refer to Stop Sequence
2-4).
4.6 AIR FLAP CONTROL
a) With engine cylinder temperature sensor
When generator-set starts up, If the engine cylinder temperature is below the set air flap
closing cylinder limit, the air flap is closed.
After entering safety on delay, If the engine cylinder temperature is above the set air flap
opening cylinder limit, the air flap is open;
if engine cylinder temperature is always below the set air flap opening cylinder limit, it will
stay in closed status, and generator-set cannot take load.
b) Without engine cylinder tempoerature sensor or sensor is open circuit
Generator-set starts up, during the first start attempt, the air flap full block, the second start
attempt, the air flap block 2/3, after the third start attempt, the air flap blocked 1/3. After the
crank disconnect, air flap is open after the delay.
4.7 ATS SWITCHING CONTROL
Auto mode: mains is available, ATS switches to mains; if mains failure and generator-set is normal
running, ATS switches to generator. Other status, ATS stays in mains station.
Manual mode: if close generator input is active, then generator closed; if close generator input is
deactivated, then mains closed.
Note: if use ATS control function, the programmable output need to be configured as GCB close output
and MCB close output, meanwhile, input need to be configured as GCB close input.

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5PROTECTION
1) Generator over voltage shutdown: alarm occurs when the controller detects generator voltage
exceeds overvoltage limit and the duration exceeds the generator abnormal delay value.
2) Generator under voltage shutdown: detect after generator-set normal running and alarm occurs
when generator voltage is below under voltage limit and the duration exceeds the generator
abnormal delay value.
3) Generator over frequency shutdown: it will alarm shutdown when generator frequency is above
over frequency limit and duration exceeds over frequency shutdown delay.
4) Generator under frequency shutdown: it will detect after generator-set normal running and
alarm shutdown when generator frequency is below under frequency limit and duration
exceeds under frequency shutdown delay.
5) Low oil pressure input shutdown: detect after safety on delay, alarm shutdown when low oil
pressure input is active and lasts for 2s.
6) Fail to start: alarm occurs when fail to start after pre-set start attempts.
6CONNECTION
No.
Function
Cable Size
Note
1
B-
2.0mm2
Connected with negative of starter battery.
2
B+
2.0mm2
Connected with positive of starter battery.
Max. 20A fuse is recommended.
3
Crank Output
1.5mm2
B+ power is supplied by terminal 2, rated 10A.
Connected with start coil of starter.
4
Fuel Output
1.5mm2
B+ power is supplied by terminal 2, rated 10A.
5
Ignition Control
1.5mm2
B- power is supplied by termainal 1, rated 10A.
6
Remote Start Input
1.0mm2
Aux. input 1, discrete signal input, Ground connected is
active (B-).
7
Oil Pressure Input
1.0mm2
Aux. input 2, discrete signal input, Ground connected is
active (B-).

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No.
Function
Cable Size
Note
8
Temp Sensor
1.0mm2
Connect with resistor type temperature sensor.
9
Aux. Output 1
1.0mm2
B- power is supplied by termainal 1, rated 1A.
10
Aux. Output 2
1.0mm2
B- power is supplied by termainal 1, rated 1A.
11
Speed Signal
1.0mm2
Connect with ignition coil primary, and diode need to be
in series.
12
S22
Use stepper
motor
Comes with
lead
Connect with pink cable of stepper motor.
13
S21
Connect with orange cable of stepper motor.
14
S12
Connect with yellow cable of stepper motor.
15
S11
Connect with blue cable of stepper motor.
16
Mains (L-N) Monitoring
Input
1.0 mm2
Connect with mains output port (2A fuse is
recommended)
17
1.0 mm2
18
Generator (L-N)
Monitoring Input
1.0 mm2
Connect with generator voltage output port (2A fuse is
recommended)
19
1.0 mm2
Note: if 5-wire system stepper motor is used, red cable need hanging in the air.

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7DEFINITION AND RANGE OF PARAMETERS
7.1 PARAMETER SETTINGS
Paramerters which can be configured by the controller are as follows,
No.
Items
Parameter Range
Default
Description
P00
Mains Normal Delay
(0-3600)s
10
Time duration for confirming mains voltage
from abnormal to normal or from normal to
abnormal, it is used to switchATS.
P01
Mains Abnormal
Delay
(0-3600)s
5
P02
Mians Under Volt
Value
(30-360)V
184
it is considered mains under voltage if
sample voltage is lower than the set value.
When 30V is set, there is no under voltage
detection.
P03
Mains Over Volt
Value
(30-360)V
276
it is considered mains over voltage if sample
voltage is higher than the set value. When
360V is set, there is no over voltage
detection.
P04
Transfer Delay
(0-99.9)s
1.0
it is time interval for transferring switch from
mains open to generator close or from
generator open to mains close.
P05
Mains Options
(0-1)
0
0：AMF(mains abnormal start enabled in
auto mode)
1：Display Only (only monitoring mains
voltage)
P06
Start Delay
(0-3600)s
1
Time duration from remote start signal is
active to engine startup.
P07
Stop Delay
(0-3600)s
1
Time duration from remote start signal is
deactivate to engine stop.
P08
StartAttempts
(1-10)
3
It is maximum of start attempts when starter
failed to start. When reaches set attempts
the fail to start alarm will be initiated.
P09
Cranking Time
(3-60)s
8
Time of starter every time power up.
P10
Crank Rest Time
(3-60)s
10
The waiting time before second power up
when engine starts fail.
P11
Safety On Delay
(1-60)
10
Alarms for low oil pressure under frequency
and under voltage are deactivated.
P12
Warming Up Time
(0-3600)s
10
Warming time between genset close and
high speed running.
P13
Cooling Time
(3-3600)s
10
Radiating time before stop genset, after it
unloads.
P14
ETS Solenoid Hold
(0-120)s
20
Stop electromagnet’s power on time when
pump unit is stopping.
P15
Close Time
(0-10.0)s
0
Pulse width of mains close and generator
close. 0s stands for constant output.
P16
Engine Cylinders
(1-2)
1
it is used for judging starter disconnect
conditions and detecting engine speed.

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No.
Items
Parameter Range
Default
Description
P17
Generator Poles
(2-64)
2
Number of engine poles. This value is used
for calculating engine speed if without speed
sensor .
P18
Generator Abnormal
Delay
(0-20.0)s
10.0
Alarm delay of generator under/over voltage.
P19
Generator Over Volt
Shutdown
(30-360)V
264
When generator voltage exceeds this
threshold and last over the delay value,
generator abnormal shutdown alarm signal
will be sent.
(No detection for over volt signals if it is set
as 360V)
P20
Generator Under
Volt Shutdown
(30-360)V
196
When generator voltage falls below this
threshold and last over the delay value,
generator abnormal shutdown alarm signal
will be sent.
(No detection for under volt signals if it is set
as 30V)
P21
Under Frequency
Shutdown
(0-75.0)Hz
45.0
When generator frequency falls below this
threshold and last over the delay value,
generator under frequecy shutdown alarm
signal will be sent.
P22
Over Frequency
Shutdown
(0-75.0)Hz
57.0
When generator frequency exceeds this
threshold and last over the delay value,
generator over frequecy shutdown alarm
signal will be sent.
P23
Under Frequency
Shutdown Delay
(0-60)s
10
Delay value of generator under frequency.
P24
Over Frequency
Shutdown Delay
(0-60)s
2
Delay value of generator over frequency.
P25
Air Flap Choke Time
(0-60)s
5
After generator-set crank disconnected,
time duration for closing air flap if without
engine cylinder temperature sensor.
P26
Air Flap Choke
Temp.
(0-200)℃
30
During generator-set starts up, if cylinder
temperature is lower than this value, air flap
will close.
P27
Air Flap Open
Temp.
(0-200)℃
60
After generator-set crank disconnect, if
cylinder temperature is higher than this
value, air flap will open.
P28
Aux. Output 1
(0-9)
5
Default function: generator close output.
Details to see 7.2 Programmable Outputs
Form as bellow.
P29
Aux. Output 2
(0-9)
6
Default function: mains close output. Details
to see 7.2 Programmable Outputs Form as
bellow.

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No.
Items
Parameter Range
Default
Description
P30
Power On Mode
Selection
(1-2)
1
1：Manual Mode
2：Auto Mode
P31
Module Address
(1-254)
1
Address communication with PC software.
P32
Password
(0-9999)
0318
Controller password.
P33
Crank Disconnect
Conditions
(0-2)
2
0：Generator frequency
1：Engine Speed
2：Generator frequency + engine speed
It is used for judging crank disconnect
condition.
P34
Disconnect Engine
Speed
(0-3000)r/min
840
When engine speed exceeds this value,
generator-set is considered as start
successfully and starter will be
disconnected.
P35
Disconnect Gen.
Frequency
(0-30.0)Hz
14.0
When generator frequency exceeds this
value, generator-set is considered as start
successfully and starter will be
disconnected.
P36
Temp Sensor Types
(0-4)
0
0：Not used
1：PT100
2：NTC-1K
3：Reserved
4：User Configured (Res.)
Parameters which can be configured only by PC software are as follows,
No.
Items
Range
Default
Description
1
Pre-heat Delay
(0-300)s
0
Before starter power up, time for heater plug to
pre-energized.
2
Start Idle Time
(0-3600)s
0
When start up, time for generator-set idle
running.
3
Stop Idle Time
(0-3600)s
0
When top, time for generator-set idle running.
4
Stepper Motor
Pluse Per Second
(100-500)Hz
400
The number of rotation steps of the motor per
second
5
Stepper Motor Run
Steps
(0-2000)
128
Number of steps are needed for motor rotating
90°
calculation formula is 360 * reduction ratio/( step
angle*4)
for example：128 = 360 * 16 / (5.625*2*4)
6
Ignition Output
(0-1)
0
0：Output when stop
1：Output when start
7
Fuel Output
(0-1)
0
0：Fuel Output
1：ETS Output
8
Digital Input 1
(0-6)
1
The function of the controller terminal 6 is
configured.
Default: remote start input, details to see 7.3

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No.
Items
Range
Default
Description
Programmable Inputs Form
9
Digital Input 2
(0-6)
2
The function of the controller terminal 7 is
configured.
Default: low oil pressure input details to see 7.3
Programmable Inputs Form
Note: when set parameters via PC software, users are needn’t to entry the password if default password
(0318)is not been changed; if it is changed via PC software, users need to entry the correct password.
7.2 PROGRAMMABLE OUTPUTS CONTENT DEFINITION
No.
Items
Function Description
0
Not Used
When this is chosen, output port won’t output.
1
Common Alarm
When stop alarm is initiated, this alarm will self-lock untill alarm reset.
2
Energizse to Stop
Used for some genset which has stop electromagnet. Close before stoping
idle ended. Open when “ETS Delay” ended.
3
Idle Control
Used for engine which has idles. Close before starting and open in warming
up delay; Close during stopping idle process and open when stop is
completed.
4
Preheat Control
Close before start, open before energize.
5
Gen Close Output
Generator close output when generator is normal running.
6
Mains Close Output
Mains close output after mains normal delay expired.
7
Air Flap Choke
Output when start engine, disconnect when air flap block delay expired or
cylinder temperature reached air flap open threshold.
8
Reserved
9
Reserved
7.3 PROGRAMMABLE INPUTS CONTENT DEFINITION
No.
Items
Remark
0
Not Used
1
Remote Start
In auto mode, generator-set starts up if this signal is active.
2
Low Oil Pressure Input
After safety on delay expired, generator alarms shutdown
immidiately if this signal is active.
3
Gen Close Input
In manual mode, generator close output when this sigal is active,
otherwise, mains close output.
4
Reserved
5
Reserved
6
Reserved

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8CONTROLLER FUNCTION SETTINGS
When the controller is at rest, press for 3s, it will enter into password entry menu and LED will
display and first digital flashes:
1) Press to plus 1, and press to minus 1. When the number is confirmed, press
to move to the next number.
2) The following numbers settings are the same as step one.
3) After password is confirmed, controller enters into parameter setting menu and LED will
display ,which is the serial number of current setting item. Press to
downturn the items and press to upturn the items.
4) Press to enter into setting status and press or to adjust parameter value.
When finished, re-press to save it, and then press to exit parameter setting status.
Note:
a) Please change controller parameters (like crank disconnect conditions selection, digital inputs, relay
outputs and delay values) in standby status, otherwise alarm shutdown or other fault information may
occurs.
b) Serial number of setting item please reference serial numbers in 7.1 parameter settings.
c) Over volt threshold must greater than under volt threshold, otherwise both under/over volt may occurs
at the same time.
d) Frequency of generator when crank disconnect should be set as low as possible, so as to separate
starter as soon as possible.

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9COMMISSIONING
Please make sure the following checks are made before commissioning,
a) Ensure all the connections are correct and wires diameter is suitable.
b) Ensure that the controller DC power has fuse, controller’s positive and negative connected to start
battery are correct.
c) Take proper action to prevent engine to crank success (e. g. Remove the connection wire of fuel
valve). If checking is OK, make the start battery power on; choose manual mode and controller will
execute routine.
d) Press “start” button, genset will start.After the cranking times as setting, controller will send signal of
Start Failure; then press “stop” to reset controller.
e) Recover the action to prevent engine to crank success (e. g. Connect wire of fuel valve), press start
button again, genset will start. If everything goes well, genset will normal running. During this time,
please watch for engine’s running state and AC generator’s voltage and frequency. If abnormal, stop
genset and check all wires connection according to this manual.
f) Any other questions please contact with SmartGen service personnel.
10 TYPICAL APPLICATION
MGC120 Wiring Connection 1
Note:
1) S11、S12、S21、S22 separately connect with blue wire, yellow wire, orange wire and pink wire of
stepper motor.
2) No.11 terminal must connect in serial with diode.
3) The maximum incoming current for programmable output 1 and output 2 is 1A.

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MGC120 Wiring Connection 2
Note: Programmable output 1 set as “Generator Close Output”.

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11 INSTALLATION
11.1 FIXING CLIPS
Controller is panel built-in design; it is fixed by clips when installed.
Withdraw the fixing clip screw (turn anticlockwise) until it reaches proper position.
Pull the fixing clip backwards (towards theback of the module) ensuring two clips are inside their
allotted slots.
Turn the fixing clip screws clockwise until they are fixed on the panel.
Note: Care should be taken not to over tighten the screws of fixing clips.
11.2 OVERALL AND CUTOUT DIMENSIONS
1) Battery Voltage Input
NOTE: MGC120 controller can suit for widely range of battery voltage DC12V. Negative of
battery must be connected with the engine shell soundly. The diameter of wire which from power
supply to battery must be over 1.5mm2. If floating charge configured, please firstly connect output
wires of charger to battery’s positive and negative directly, then, connect wires from battery’s positive
and negative to controller’s corresponding input ports in order to prevent charger disturbing the
controller’s normal working.
WARNING: In running process, removing start battery is strictly prohibit.
2) Withstand Voltage Test
CAUTION: When controller has been installed in control panel, if the high voltage test is
needed, please disconnect controller’s all terminals in order to prevent high voltage into controller
and damage it.

MGC120 Petrol Genset Controller User Manual
MGC120 Petrol Genset Controller Version 1.0 2017-11-07 Page 19 of 19
12 FAULT FINDING
Symptoms
Possible Solutions
Controller no response with
power.
Check starting batteries;
Check controller connection wirings;
Check DC fuse.
Genset shutdown
Check alternator voltage.
Low oil pressure alarm after
crank disconnected
Check oil pressure sensor and its connections.
Shutdown Alarm in running
Check related switch and its connections according to the information
on LED;
Crank not disconnect
Check fuel oil circuit and its connections;
Check starting batteries;
Check speed sensor and its connections;
Refer to engine manual.
Starter no response
Check starter connections;
Check starting batteries.
Air flap stepper motor
contrarotation
Check order of wiring connection of stepper motor.
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