Smartgen GENSET CONTROLLER MGC310 User manual

MGC310/MGC320
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-(0)371-67991553/67992951
0086-(0)371-67981000(overseas)
Fax: [phone]
Web: www.smartgen.com.cn
www.smartgen.cn
Email: [e-mail]
All rights reserved. No part of this publication may be reproduced in any material form (including
photocopying or storing 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.
Table 1 Version Hsitory
Date
Version
Content
2019-10-15
1.0
Original release.
2020-01-04
1.1
Fixed application diagram.

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CONTENT
1 OVERVIEW.......................................................................................................................................4
2 PERFORMANCEAND CHARACTERS............................................................................................5
3 SPECIFICATION...............................................................................................................................6
4 OPERATION......................................................................................................................................7
4.1 CONTROL PANEL......................................................................................................................7
4.2 PUSH BUTTONS........................................................................................................................8
4.3 INDICATOR DESCRIPTION ......................................................................................................9
4.4 DISPLAY DISCRIPTION...........................................................................................................10
4.4.1 LOW POWER CONSUMPTION OPERATION..................................................................11
4.4.2 INSTRUCTION...................................................................................................................11
4.4.3 AUTO START SEQUENCE................................................................................................11
4.4.4 AUTO STOP SEQUENCE .................................................................................................12
4.4.5 MANUAL START/STOP OPERATION...............................................................................12
5 PROTECTION.................................................................................................................................13
6 CONNECTION ................................................................................................................................14
7 DEFINITION AND RANGE OF PARAMETERS..............................................................................16
7.1 PARAMETER SETTING CONTENTS AND RANGE ...............................................................16
7.2 DEFINABLE CONTENTS OF OUTPUT PORTS.....................................................................19
7.3 DEFINABLE CONTENTS OF INPUT PORTS.........................................................................19
7.4 SENSOR SELECTION.............................................................................................................20
8 CONTROLLER PARAMETER SETTINGS.....................................................................................21
9 SENSOR SETTING.........................................................................................................................22
10 COMMISSIONING ........................................................................................................................23
11 TYPICALAPPLICATION ...............................................................................................................24
12 INSTALLATION .............................................................................................................................25
12.1 FIXING CLIPS ........................................................................................................................25
12.2 OVERALLAND CUTOUT DIMENSIONS...............................................................................25
13 FAULT FINDING............................................................................................................................27

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1OVERVIEW
MGC300 Series Genset Controller is applicable for single unit automation control to realize auto start
of single unit and AMF. The controller integrates digitalization with intelligence and applies LCD graphic
display, which is simple for operation and reliable for running.
MGC300 Series Genset Controller applies 32-bit micro-processor technology, realizing precise
measuring for various parameters, set-value adjusting, and timing, and limit value setting functions etc.
A majority of parameters can be adjusted from the front panel, and all parameters can be configured by
RS485 on PC. It has compact structure, simple wiring, high reliability, which can be used for all types of
genset automation system.
MGC300 Series Genset Controller includes true low power consumption (power off) and feign low
power consumption (awakening, but screen light not on, stop indicator flashing, not do any action).

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2PERFORMANCE AND CHARACTERS
——Graphic LCD display (backlight), LED indicators, push-button operation;
——Acrylic material for hard screen protection;
——Wide power supply range DC (8-35)V, which can suits different environments of starter battery
voltages;
——Collect and display mains/gen 3-phase voltage, 3-phase current, frequency, and power
parameters;
Mains Gen
Line voltage (L12, L23, L31) Line voltage (L12, L23, L31)
Phase voltage (L1, L2, L3) Phase voltage (L1, L2, L3)
Frequency (Hz) Frequency (Hz)
Load
Current (Ia, Ib, Ic) Unit: A
Total active power P Unit: kW
——Mains has over volt, under volt, over frequency, under frequency, and loss of phase functions;
Gen has over volt, under volt, over frequency, under frequency, over current, over power, and
loss of phase functions;
——Precisely measure all parameter values of engines:
Temperature °C Fuel level %
Battery voltage V Accumulated running time H (max. 9999 hours)
Speed RPM Accumulated start times (max. 90000000 times, display only on PC software)
——Genset fault protection and display function;
——Controller has 4 working modes: manual, auto, stop, and test mode, and MGC310 has stop,
manual, auto modes, and MGC320 has manual, auto, stop, and test mode;
——Parameter setting function: allows users to change and set the parameters, which won't be lost
on system power off; a majority of parameters can be adjusted from front panel, and all
parameters can be configured by RS485 on PC;
——1 programmable input port, 2 fixed input ports;
——2 fixed relay output ports (fuel output, start output);
——2 programmable relay output ports;
——All parameters are adjusted digitally, improving the whole case's reliability and stability;
——Sealing gasket is designed between the closure and the control window, whose dustproof and
waterproof performance can be reached to IP65;
——Metal fixing clips are used to stable the controller;
——Modular structure design, pluggable wiring terminal, and built-in installation, make it compact in
structure and easy to install.

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3SPECIFICATION
Table 2 Technical Parameters
Items
Contents
Working Voltage
DC (8.0-35.0)V continous
Overall Consumption
≤1.4W (Standby mode: ≤0.35W, 0W=low power consumption);
AC Volt Input:
3 phase 4 wire
3 phase 3 wire
Single phase 2 wire
2 phase 3 wire
30V AC - 360V AC (ph-N)
30V AC - 620V AC (ph-ph)
15V AC - 360V AC (ph-N)
15V AC - 360V AC (ph-N)
Alternator Frequency
50Hz/60Hz
Starter Relay Output
7A 24V DC power supply
Fuel Relay Output
7A 24V DC power supply
Flexible Relay Output 1
7A 250V AC volt free output
Flexible Relay Output 2
7A 250V AC volt free output
Overall Dimensions
126mm x 106mm x 46.5mm
Panel Cutout
111mm x 91mm
CT Secondary Current
Rated: 62.5mA
Working Condition
Temperature:(-25~+70)°C
Humidity:(20~93)%RH
Storage Condition
Temperature:(-30~+80)°C
Protection Level
Front panel IP65
Insulation
Apply AC2.2kV voltage between high voltage terminal and low voltage
terminal and the leakage current is not more than 3mA within 1min.
Weight
0.27kg

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4OPERATION
4.1 CONTROL PANEL
Fig. 1 MGC310 Front Panel
Fig. 2 MGC320 Front Panel

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4.2 PUSH BUTTONS
Table 3 Button Description
Icons
Function
Description
Stop/On
Stop the running genset both in manual mode and in auto mode;
In alarm status, press this button to reset any shutdown alarms.
In stop mode, press this button and Up key to test if LCD icons and LED
indicators are OK.
In stop mode, press this button and Down to set backlight always on;
In stop process, re-press this button to stop generator immediately.
In parameter setting process, press this button to exit the setting quckly;
In stop status, press this button to start;
In start status, press longer for 3s and release to stop the genset;
Auto
Press this key and controller enters to Auto mode; under this mode, genset
can be controlled by remote start input signals;
Start
Press this key and genset will start;
Down/Decrease
LCD page scroll;
In parameter settings, decrease the value where
the cursor is;
Press the two keys
simultaneously to enter
parameter settings
page;
Up/Increase
LCD page scroll;
In parameter settings, increase the value where
the cursor is;
Manual/Confirm
Confirm key for parameter settings page;
Manual key for other pages and press it to make controller in Manual mode;
This key is especially for MGC310;
Test/Confirm
Confirm key for parameter settings page;
Test key for other pages and press it to make controller commissoning;
This key is especially for MGC320;

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4.3 INDICATOR DESCRIPTION
Table 4 LCD Icons
Icon
Definition
Icon
Definition
Generating power indicator
Level sensor indicator
Mains power indicator
AC phase voltage indicator
Start countdown (crank disconnect is
satisfied)
L12
AC line voltage indicator
Over frequency alarm
Battery voltage indicator
Under frequency alarm
Load current unit
Temp high alarm
Accumulated running time unit
Fuel level low
Frequency unit
Outside input alarm
Temperature unit
Engine oil pressure low alarm
Speed unit (r/min)
Crank failure
Active power unit
Stop failure
Voltage unit
Battery voltage abnormal
Percentage
Gen voltage high
I# Mains Close
Gen voltage low
II# Gen Close
Load over current

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4.4 DISPLAY DISCRIPTION
Mains: Phase Voltage L1, Frequency F Mains: Phase Voltage L2, Frequency F
Mains: Phase Voltage L3, Frequency F Gen: Phase Voltage L1, Curent IA
Gen: Phase Voltage L2, Current IB Gen: Phase Voltage L3, Current IC
Mains: Line Voltage L12, Frequency F Mains: Line Voltage L23, Frequency F
Mains: Line Voltage L31, Frequency F Gen: Line Voltage L12, Frequency F
Gen: Line Voltage L23, Frequency F Gen: Line Voltage L31, Frequency F
Battery Voltage, Speed Fuel Level, Temp.
Active Power, Accumulated Running Time
NOTE1: When temp. and level sensor are not displayed, it means they are not used; when OFF is displayed, it means that
sensor is open.

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4.4.1 LOW POWER CONSUMPTION OPERATION
Controller applies low power consumption method at hardware aspect, which reduces the power
consumption greatly in the period of stop. With this battery cost is larged decreased, because it reduces
the battary change times.
Controller has true low consumption (power off) and feign low consumption (awakening, LCD light not on,
only stop indicator flashing, not do any action).
a. Power on the controller, and controller is running as usual;
b. After power on, press and controller enters normal runningl if is not pressed,
controller will judge the status according to the last stop situation; If controller is stopped manually, it
will enter true low consumption as remote start signal is inactive; if it is active, controller enters feign
low consumption; Otherwise, controller will run normally.
c. In standby status, Press for 3s and controller will be powered off.
NOTE 1: When low consumption time is set to 0, controller will not enter it automatically (base pin of power control is
always energized).
NOTE 2: When low consumtion time is not set to 0, if genset is in the standby mode and doesn't have data communication,
controller will enter low consumtion based on the set low consumption time.
4.4.2 INSTRUCTION
Press and the indicator beside will be on, which means genset is in the auto mode.
4.4.3 AUTO START SEQUENCE
a. When remote start signal is active (Terminal No. 6 connects B-), “Start Delay” time is initiated;
b. When start delay is over, preheating relay outputs (if configured), “preheat delay” is initiated;
c. After the above delay, the fuel relay outputs, and one second later, the start relay outputs; During the
starting time if the genset fails to start, fuel relay and start relay stop outputting, enter “Crank Rest
Time” and wait for next start;
d. If the genset fails to start during the set starting attempts, LCD displays and it means start
failure alarm and meanwhile alarm indicator flashes;
e. If the genset starts successfully during the starting attempts, it enters “Safety On” time, during which
low oil pressure, water temperature high alarms are inactive; After “Safety On” time, it enters “Start
Idle Delay” (if configured);
f. During “Start Idle Delay”, under speed, under frequency and under volt alarms are all inactive;When
this delay is over, “Warming Up Delay” is initiated (if configured);
g. After the “warming up delay”, genset will enter into Normal Running status. If genset voltage or
frequency is abnormal, controller will issue shutdown alarm and stop the genset.

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4.4.4 AUTO STOP SEQUENCE
a. When remote start input is invalid, “Stop Delay” time is initiated;
b. Once this “stop delay” has expired, the “Cooling Down Delay” is then initiated;
c. When “Stop Idle Delay” (if configured) starts, idle speed relay is energized and outputs;
d. When “ETS Solenoid Hold” begins, ignition control relay is energized and fuel relay is de-energized;
e. When controller enters "Wait for stop" time, it will judge whether genset has stopped completely;
f. After complete stop, controller will enter standby status; if genset cannot stop controller will issue
alarm (LCD displays ).
NOTE 3: Press stop key in auto start status, generator will stop and enter into stop mode simultaneously.
NOTE 4: In the procedure of crank rest time, when fuel output is disconnected and crank rest countdown is less than 7s,
preheating and ETS stop output; after crank rest time, ETS stop output is disconnected and fuel outputs; Preheating is
stopped before crank.
4.4.5 MANUAL START/STOP OPERATION
Manual Start: press to start genset (Please refer to start procedure b~g of AUTO START
SEQUENCE). If water temp. high, over speed, and abnormal voltage occur during the running process,
controller shall protect it to stop quickly.
Manual Stop: press to stop the running genset (Please refer to stop procedure b~f of AUTO
STOP SEQUENCE).

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5PROTECTION
Table 5 Alarm Types
Icons
Alarm Contents
Type
Trigger
Over Frequency Stop
Shutdown
Gen frequency is above over frequency limit for 2s, it
will issue alarm;
Under Frequency Stop
Shutdown
Detected when genset is running normal; gen freq. is
less than under frequency limit for 10s, and it alarms.
Temp. High
Shutdown
Detected after safety on delay; when temp. high is
above high temp. limit for 3s, it will issue alarm;
Temp. High Input
Shutdown
Detected after safety on delay; when temp. high input is
active, it will issue alarm;
Oil Pressure Low Input
Shutdown
Detected after safety on delay; it alarms when oil
pressure low input is active;
Gen Over Current
Warning
Action is set to Warning; Gen current is over pre-set
value, and lasting time surpasses delay time, it alarms;
Gen Over Current
Shutdown
Action is set to Shutdown; Gen current is over pre-set
value, and lasting time surpasses delay time, it alarms;
Gen Over Current
Cooling Shutdown
Shutdown
Action is set to Cooling Shutdown; gen current is over
pre-set value and lasting time is over delay, it alarms;
Gen Voltage High
Shutdown
Detected after safety on delay; gen voltage is over the
threshold, and this lasts for over delay, and it alarms;
Gen Voltage Low
Shutdown
Detected after genset running; gen voltage is lower
than threshold for over the delay time, and it alarms;
Fail to Crank
Shutdown
It alarms when starter doesn't start the engine in the
range of the pre-set start times;
Outside Shutdown
Alarm Input
Shutdown
When "outside shutdown alarm" is configured for the
input port, and when the input is active, it alarms;
Fuel Level Low
Warning
When fuel level is lower than the threshold for 10s, it
alarms;
Fuel Level Low Input
Warning
When fuel level low input is active, it alarms;
Fail to Stop
Warning
Complete stop time is over but genset still stops
completely and controller will alarm;
Battery Voltage Low
Warning
Battery voltage is lower than the threshold for 20s, it
alarms;
Battery Voltage High
Warning
Battery voltage is higher than the threshold for 20s, it
alarms;
NOTE 1: Shutdown alarms are latched signals and alarms can be removed by using Stop key (in stop status); warning
alarms are not latched.

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6CONNECTION
Fig. 3 Back Panel

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Table 6 Terminal Connection Description
No.
Function
Cable Size
Note
1
B-
1.5mm2
Connected with negative of starter battery.
2
B+
1.5mm2
Connected with positive of starter battery.
3
Fuel Relay Output
1.0mm2
B+ power is supplied by terminal 2, rated 7A.
4
Crank Relay Output
1.0mm2
B+ power is supplied by terminal 2, rated 7A.
5
Digital Input
1.0mm2
Digital input; GND connected is active (B-);
Level sensor; connected with level low signal or level
resistance sensor;
6
Remote Start Input
1.0mm2
GND connected is active (B-);
7
Oil Pressure Input
1.0mm2
Connected with digital signals of oil pressure low;
8
Fuel Level Sensor Input
1.0mm2
Level sensor input;
9
Temp. Sensor Input
1.0mm2
Connected with water/cylinder digital signals or temp.
resistance sensor;
10
RS485-
1.0mm2
11
RS485+
1.0mm2
12
Digital Output 1
1.0mm2
Relay N/O connector, volt free output, rated 7A;
13
14
Digital Output 2
1.0mm2
N/C output, rated 7A;
15
Relay COM
16
N/O output, rated 7A;
17
Mains R Voltage
1.0mm2
Connected to Mains R Phase;
18
Mains S Voltage
1.0mm2
Connected to Mains S Phase;
19
Mains T Voltage
1.0mm2
Connected to Mains T Phase;
20
Mains N1 Input
1.0mm2
Connected to Mains N wire;
21
Gens U Voltage
1.0mm2
Connected to genset output U Phase;
22
Gens V Voltage
1.0mm2
Connected to genset output V Phase;
23
Gens W Voltage
1.0mm2
Connected to genset output W Phase;
24
Gens N2 Input
1.0mm2
Connected to genset output N wire;
25
CT COM
1.0mm2
26
CT IC
1.0mm2
Outside connected with CT secondary coil (rated 62.5mA);
27
AT IB
1.0mm2
Outside connected with CT secondary coil (rated 62.5mA);
28
CT IA
1.0mm2
Outside connected with CT secondary coil (rated 62.5mA);

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7DEFINITION AND RANGE OF PARAMETERS
7.1 PARAMETER SETTING CONTENTS AND RANGE
Table 7 Controller Configuration Parameters
No.
Items
Parameter Range
Default
Description
P00
Mains Normal Delay
(0-3600)s
10
Check time duration for Mains voltage from
abnormal to normal or from normal to
abnormal to be used forATS transfer.
P01
Mains Abnormal
Delay
(0-3600)s
5
P02
Mians Under Volt
Value
(30-6000)V
184
If the voltage sample is lower than it, Mains
under voltage is considered; When it is set
30V, under voltage signal shall not be
detected; return difference is 10V;
P03
Mains Over Volt
Value
(30-6000)V
276
If the voltage sample is higher than it, Mains
over voltage is considered; When it is set
60000V, overvoltage signal shall not be
detected; return difference is 10V;
P04
Mains Options
(0-1)
0
0: AMF 1: Display Only
P05
Start Delay
(0-3600)s
1
Time duration from mains abnormal or
remote start signal is active to genset
startup.
P06
Stop Delay
(0-3600)s
1
Time duration from mains normal or remote
start signal is deactivated to genset stop.
P07
StartAttempts
(1-10) times
3
It is maximum start attempts when starter
fails to start. When it reaches set attempts
controller shall send out start failure signal.
P08
Pre Heating
(0-300)s
0
Pre-heating plug pre-energization time
before starter is powered on;
P09
Cranking Time
(3-60)s
8
Time for starter to be energized every time.
P10
Crank Rest Time
(3-60)s
10
The waiting time before second power up
when engine start fails.
P11
Safety On Delay
(1-60)s
10
Alarms for low oil pressure, temp. high,
under speed, under frequency and under
voltage are deactivated.
P12
Start Idle Delay
(0-3600)s
0
Time for genset idle running at starting;
P13
Warming Up Time
(0-3600)s
10
Warming-up time before breaker close after
high speed running for genset.
P14
Cooling Time
(3-3600)s
10
Radiating time before genset stop after
genset is unloaded.
P15
Stop Idle Delay
(0-3600)s
0
Time for genset idle running at stopping;
P16
ETS Solenoid Hold
(0-120)s
20
The time for Stop electromagnet to be
energized before genset stop.
P17
Wait for Stop
(0-120)s
0
Time from idle delay to complete stop when
ETS stop output is set to 0; when the output
time is not 0s; it's time from ETS stop end to

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No.
Items
Parameter Range
Default
Description
complete stop;
P18
Generator Poles
(2-64)
2
When engine speed is over this value for 2s,
over speed is considered; controller
issuesover speed alarm shutdown signal;
P19
Gen Abnormal
Delay
(0-20.0)s
10.0
Alarm delay for gen under/over voltage.
P20
Gen Over Volt limit
for Shutdown
(30-6000)V
264
When generator voltage is higher than this
threshold and lasts for the set gen abnormal
delay, then it shall consider over voltage and
shutdown alarm will be initiated.
(No detection for over volt signals if it is set
as 60000V)
P21
Gen Under Volt limit
for Shutdown
(30-6000)V
196
When sample voltage falls below this
threshold and lasts for the delay time, it is
considered under voltage and shutdown
alarm shall be initiated.
(No detection for under volt signals if it is set
as 30V)
P22
Level High to
disable Fuel Pump
(0-100)%
80
When fuel level is over the pre-set value for
2s, fuel pump is off;
P23
Level Low to enable
Fuel Pump
(0-100)%
25
When fuel level is under the pre-set value for
2s, fuel pump is on;
P24
Under Frequency
Shutdown
(0-75.0)Hz
45.0
When generator frequency falls below this
threshold (not 0) and lasts for the delay time,
then it is considered under frequecy and
shutdown alarm signal will be initiated.
P25
Over Frequency
Shutdown
(0-75.0)Hz
57.0
When generator frequency is over than this
threshold and lasts for the delay time, then it
is considered over frequecy and shutdown
alarm signal will be initiated.
P26
Under Frequency
Shutdown Delay
(0-60)s
10
When generator frequency falls below this
threshold (not 0) and lasts for the delay time,
then it is considered under frequecy and
shutdown alarm signal will be initiated.
P27
Over Frequency
Shutdown Delay
(0-60)s
2
When generator frequency is over than this
threshold and lasts for the delay time, then it
is considered over frequecy and shutdown
alarm signal will be initiated.
P28
Temp. High
Shutdown Value
(80-140)ºC
98
When outside temp. sensor is above this
value, and Temp. High signal is issued; This
is detected only after safety on delay and
only for externally connected Temp. sensor;
When set value is 140, Temp. High signal is
not issued (only for Temp. sensor, excluded

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No.
Items
Parameter Range
Default
Description
the temp. high alarm signal of input port);
P29
Level Low Warning
Value
(0-200)%
50
When level is under this value for 10s, level
low warning is issued (only warning, not
stop);
P30
Battery Over
Voltage Warning
(12-40)V
33.0
When battery voltage is higher than this
value for 20s, battery voltage abnormal
signal is issued; (only warning, not stop)
P31
Battery Under
Voltage Warning
(4-30)V
8.0
When battery voltage is lower than this value
for 20s, battery voltage abnormal signal is
issued; (only warning, not stop)
P32
CT Ratio
500A/62.5mA
500
CT ratio for externally connected CT;
P33
Full Load Current
(5-6000)A
500
Rated current of genset; used for full load
current calculation;
P34
Over Current %
(50-130)%
120
When full load current is higher than this,
over current delay started;
P35
Over Current Delay
(0-3600)s
60
Finite over current delay; when load current
is over the pre-set value for pre-set time,
over current is considered; when delay is 0s;
it only gives warning, not stop;
P36
Over Current Action
(0-2)
0
0: Warning 1: Shutdown
2: Cooling Shutdown
P37
Digital Output 1 Set
(0-9)
5
See Table 8 for detailed output contents;
P38
Digital Output 2 Set
(0-9)
6
See Table 8 for detailed output contents;
P39
Fuel Output Time
(1-60)s
1
Fuel output time for genset start;
P40
Power On Mode
Selection
(0-2)
0
0: Stop
1：Manual Mode
2：Auto Mode
P41
Module Address
(1-254)
1
Communication address
P42
Password
(0-9999)
318
Controller password.
P43
Disconnection Gen.
Frequency
(0.0-30.0)Hz
14.0
In the starting process when gen frequency
exceeds this value, it is considered that start
is successful and starter will be
disconnected.
P44
AC System
(0-3)
0
0: 3P4W 1: 2P3W
2: 1P2W 3: 3P3W
P45
Temp Sensor Types
(0-12)
8
See Table 10 for Temp. sensor type;
P46
Level Sensor
Selection
(0-5)
3
See Table 10 for level sensor type;
P47
Input 1 Set
(0-8)
4
See Table 9 for input contents;
P48
Digital Input 1 Delay
(0-20.0)s
2.0
Digital input acts when input is delaying;
P49
Low Consumption
(0-180)s
0
Low power consumption time setting

MGC300 Genset Controller User Manual
MGC300 Genset Controller Version 1.12020-01-04 Page 19 of 27
7.2 DEFINABLE CONTENTS OF OUTPUT PORTS
Table 8 Definable Contents of Output Ports
No.
Items
Function Description
0
Not Used
When this is chosen, output port won’t output.
1
Common Alarm
Includes all shutdown alarms and warnings; when there is only warning
alarm input, alarm is not latched; when shutdown alarms occur, alarms are
latched until they are reset;
2
ETS Control
It is used for some gensets with stop electromagnet. Pull-in occurs when
“stop idle speed”ends. Open occurs when “ETS Delay” ends.
3
Idle Speed Control
It is used for engines with idling speed. Pull-in occurs when the engine
starts. Open occurs when it enters “Warming-up”. Pull-in occurs in the
stopping process of idling speed and open occurs when the genset stops
completely.
4
Preheating Control
Close before start, open before energization.
5
Gen Close Output
Generator close outputs when generator is normally running.
6
Mains Close Output
Mains close outputs after mains normal delay ends.
7
High Speed Output
Outputs when enters warming up time; disconnects after cooling;
8
Fuel Pump Output
Outputs when fuel pump works;
9
Reserved
7.3 DEFINABLE CONTENTS OF INPUT PORTS
Table 9 Definable Contents of Input Ports ( GND Connected is active for all)
No.
Items
Remark
0
Not Used
1
Temp. High Alarm Input
After safety on delay is finished, generator shutdown alarm occurs
immediately if this signal is active.
2
Oil Pressure Low Input
3
Reserved
4
Outside Shutdown Input
If this signal is active, genset will immediately shutdown;
5
Cooling Shutdown for
Temp. High
When this signal is active and genset is running normally, if Temp.
high occurs, controller will stop after cooling delay; when this signal
is inactive, if Temp. high occurs, controller will stop immediately;
6
Reserved
7
Reserved
8
Reserved

MGC300 Genset Controller User Manual
MGC300 Genset Controller Version 1.12020-01-04 Page 20 of 27
7.4 SENSOR SELECTION
Table 9 Sensor Selection
No.
Items
Contents
Remark
1
Temp. Sensor
0: Not Used
1: Customized Resistance Curve
2: VDO
3: SGH
4: SGD
5: CURTIS
6: DATCON
7: VOLVO-EC
8: SGX
9: Digital Low Input Active
10: Digital High Input Active
11: Reserved
12: Reserved
Costomized resistance input range:
0Ω-6000Ω; Default: SGX Sensor
2
Fuel Level Sensor
0: Not Used
1: Customized Resistance Curve
2: SGH
3: SGD
4: Digital Low Input Active
5: Digital High Input Active
Costomized resistance input range:
0Ω-6000Ω; Default: SGD Sensor