Smartgen APC715 User manual

APC715
PUMP UNIT 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]
[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
Note
2013-08-28
1.0
Original release.
2014-03-06
1.1
1. Add maintenance setting description.
2. Add indication alarm description.
3. Modify some speed adjustment functions.
4. Add miscellaneous screen description.
2019-05-21
1.2
Fixed GOV terminal description and typical application
diagram.
2021-03-08
1.3
Modify the error in table 3 and other translation problems.

This manual is suitable for APC715 pump unit controller only.
Clarification of notation used within this publication.
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.

APC715 Pump Unit Controller User Manual Page 4 of 62
CONTENTS
1 OVERVIEW ........................................................................................................................................ 6
2 PERFORMANCE AND CHARACTERISTICS ..................................................................................... 7
3 SPECIFICATION................................................................................................................................ 9
4 OPERATION .................................................................................................................................... 10
4.1 INDICATOR LIGHT .................................................................................................................. 10
4.2 KEY FUNCTIONS..................................................................................................................... 11
4.3 LCD DISPLAY .......................................................................................................................... 12
4.3.1 MAIN DISPLAY ........................................................................................ 12
4.3.2 USER MENU AND PARAMETERS SETTING MENU.......................................... 14
4.4 AUTO START/STOP OPERATION .......................................................................................... 17
4.5 MANUAL START/STOP OPERATION..................................................................................... 18
4.6 ON-LOAD CONTROL PROCEDURE......................................................................................... 18
4.7 ADJUST SPEED CONTROL PROCEDURE............................................................................... 19
5 PROTECTION .................................................................................................................................. 20
5.1 WARNINGS.............................................................................................................................. 20
5.2 SHUTDOWN ALARM............................................................................................................... 22
5.3 COOLING SHUTDOWN ALARM.............................................................................................. 24
5.4 FAULT IDLE ALARM................................................................................................................ 24
5.5 INDICATION ALARM............................................................................................................... 24
6 WIRING CONNECTION ................................................................................................................... 25
7 DEFINITION AND RANGE OF PARAMETERS ................................................................................ 28
7.1 PARAMETER CONTENTS AND RANGES............................................................................... 28
7.2 DEFINITION OF PROGRAMMABLE OUTPUT 1-5 .................................................................. 36
7.2.1 DEFINED CONTENTS OF PROGRAMMABLE OUTPUT 1-5................................ 36
7.2.2 CUSTOM PERIOD OUTPUT......................................................................... 40
7.2.3 CUSTOM COMBINED OUTPUT.................................................................... 40
7.3 DEFINED CONTENTS OF CONFIGURABLE INPUT PORTS ................................................... 42
7.4 SELECTION OF SENSORS ...................................................................................................... 44
7.5 CONDITIONS OF CRANK DISCONNECT SELECTION ........................................................... 45
7.6 MAINTENANCE SETTING....................................................................................................... 46
8 PARAMETERS SETTING................................................................................................................. 47
9 SENSOR SETTING .......................................................................................................................... 48

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10 TYPICAL APPLICATION ................................................................................................................. 49
11 INSTALLATION ............................................................................................................................... 50
12 CONNECTIONS OF CONTROLLER WITH J1939 ENGINE ............................................................ 51
12.1 CUMMINS ISB/ISBE................................................................................................................ 51
12.2 CUMMINS QSL9...................................................................................................................... 51
12.3 CUMMINS QSM11 (IMPORT)................................................................................................. 52
12.4 CUMMINS QSX15-CM570 ...................................................................................................... 52
12.5 CUMMINS GCS-MODBUS....................................................................................................... 53
12.6 CUMMINS QSM11 .................................................................................................................. 53
12.7 CUMMINS QSZ13 ................................................................................................................... 54
12.8 DETROIT DIESEL DDEC III / IV................................................................................................ 54
12.9 DEUTZ EMR2........................................................................................................................... 55
12.10 JOHN DEERE ......................................................................................................................... 55
12.11 MTU MDEC ............................................................................................................................ 56
12.12 MTU ADEC (SMART MODULE)............................................................................................. 56
12.13 MTU ADEC (SAM MODULE).................................................................................................. 57
12.14 PERKINS................................................................................................................................. 57
12.15 SCANIA .................................................................................................................................. 58
12.16 VOLVO EDC3.......................................................................................................................... 58
12.17 VOLVO EDC4.......................................................................................................................... 59
12.18 VOLVO-EMS2......................................................................................................................... 59
12.19 YUCHAI .................................................................................................................................. 60
12.20 WEICHAI................................................................................................................................. 60
13 USB.................................................................................................................................................. 61
14 FAULT FINDING.............................................................................................................................. 62

APC715 Pump Unit Controller User Manual Page 6 of 62
1OVERVIEW
APC715 Pump Unit Controller is designed for pump systems which controlled by engine. It allows
automatic start/stop, data measurement, alarm protection as well as remote control, remote
measurement and remote communication function. Utilizing the GOV (Engine Speed Governor)
control function, the controller is able to stabilize the outlet/inlet pressure. CANBUS (SAE J1939)
interface enables the controller to communicate with various ECU or non-ECU engine pumps.
APC715 Pump Unit Controller fits with LCD display, optional languages interface (including
English, Chinese or other languages); simultaneously the exact parameters of pump unit and
engine are indicated by the LCD display on the front panel and the controller is reliable and easy to
use.
APC715 Pump Unit Controller adopts powerful 32-bit ARM micro-processor technology with
precision parameters measuring, fixed value adjustment, time setting and threshold setting and
etc. The majority of parameters can be configured from front panel and all the parameters can be
set using PC (via USB port) and can be adjusted and monitored with the help of RS485 port. It can
be widely used in a number of pump control system with compact structure, simple connections
and high reliability

APC715 Pump Unit Controller User Manual Page 7 of 62
2PERFORMANCE AND CHARACTERISTICS
480x272 pixel, 4.3-inche color TFT-LCD with backlight, multilingual interface (including Chinese,
English or other languages) which can be chosen at the site, making commissioning
convenience 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 enabling remote control, remote measuring, remote
communication via ModBus protocol;
Equipped with CANBUS port and can communicate with J1939 engine. Not only can you
monitor frequently-used data (such as water temperature, oil pressure, engine speed, fuel
consumption and so on) of ECU machine, but also control start, stop, raising speed and speed
droop via CANBUS port;
GOV Function; outlet pressure and inlet pressure can be adjusted via GOV function. GOV port:
Relay output; Analog output (for speed control unit); CANBUS port (for engine control unit);
The controller detects not only engine speed but also gearbox speed;
Water pressure curve and flow curve are user-defined;
10 analog sensors; sensors can switch between resistor type and current type using jumper;
More kinds of curves of temperature, oil pressure, fuel level can be used directly and users can
define the sensor curves by themselves;
Precision measure and display parameters about engine and pump unit; e.g. engine high water
temperature, low oil pressure, over speed, high water pressure, low water pressure, over flow
and other kinds of fault indication and protection function;
There are two kinds of speed adjustment ways: manually and automatically; users can adjust
the speed on the panel;
Idle control function; the unit will slow down to idle running automatically when the clutch
releases;
All output ports are relay-out;
PLC programming function; can be applied to complex system;
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 or RS485 port;
Multiple crank disconnect conditions (speed sensor, oil pressure) are optional;
Widely power supply range DC(8~35)V, suitable for different starting battery voltage
environment;
Event log, real-time clock, scheduled start & stop pump unit (can be set as start pump unit once
a day/week/month whether with load or not);
Accumulative total run time A and B. Users can reset it as 0 and re-accumulate the value which
make convenience to users to count the total value as their wish;
Can control engine heater, cooler and fuel pump;
With maintenance function. Actions can be set when maintenance time out;
All parameters used digital adjustment, instead of conventional analog modulation with normal
potentiometer, improving reliability and stability;

APC715 Pump Unit Controller User Manual Page 8 of 62
Waterproof security level IP55 due to rubber seal installed between the controller enclosure
and panel fascia;
Metal fixing clips enable perfect performance in high temperature environment;
Modular design, anti-flaming ABS plastic enclosure, pluggable connection terminals and
embedded installation way; compact structure with easy mounting.

APC715 Pump Unit Controller User Manual Page 9 of 62
3SPECIFICATION
Table 3 Technical Parameters
Item
Contents
Working Voltage
DC8. 0V to 35. 0V, Continuous Power Supply
Overall Consumption
<4W (Standby mode: ≤2W)
Speed Sensor Voltage
1.0V to 24V (RMS)
Speed Sensor Frequency
10,000 Hz (max)
Start Relay Output
16Amp DC28V power supply
Fuel Relay Output
16Amp DC28V power supply
Programmable Relay Output 1-6
7Amp DC28V power supply
Programmable Relay Output 7-10
7Amp AC250V volts free
Analog Sensor
4 fixed sensors, 6 configurable sensors
Overall Dimensions
266mm x 182mm x 45mm
Panel Cutout
214mm x 160mm
Working Conditions
Temperature: (-25~+70)°C Humidity: (20~93)%RH
Storage Condition
Temperature: (-25~+70)°C
Protection Level
IP55 Gasket
Weight
0.95kg

APC715 Pump Unit Controller User Manual Page 10 of 62
4OPERATION
4.1 INDICATOR LIGHT
Fig.1 Front Panel Indication
NOTE: Selected indicators description:
Table 4 Warning and Alarm Indicators
Alarm Type
Warning Indicator
Alarm Indicator
Warning Alarm
Slow flashing
Slow flashing
Shutdown Alarm
Off
Fast flashing
Running indicator: illuminated from crank success to ETS while off during other periods.

APC715 Pump Unit Controller User Manual Page 11 of 62
4.2 KEY FUNCTIONS
Table 5 Key Descriptions
Icon
Keys
Description
Stop
Stop running pump unit in Auto/Manual mode; Reset
alarm in stop mode; Lamp test (press at least 3 seconds);
During stopping process, press this button again to stop
pump unit immediately.
Start
Start pump unit in Manual/Test mode.
Manual Mode
Press this key and controller enters in Manual mode.
Auto Mode
Press this key and controller enters in Auto mode.
Mute
Alarming sound off; If there is alarm, pressing the button
at least 3 seconds can reset this alarm.
Load
Can control the clutch to switch on or off in manual
mode.
Adjust Speed
Enter/Exit the speed adjust menu.
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.
Right
1) Screen scroll; 2) Right move cursor in setting menu.
Set/Confirm
1. Enter into “help” interface;
2. Pressing and holding for more than 3 seconds can
enter parameter configuration menu;
3. In settings menu confirms the set value.
Exit
1. Returns to the main menu;
2. In settings menu returns to the previous menu.
NOTE: In manual mode, pressing and simultaneously will force generator to crank.
Successful start will not be judged according to crank disconnect conditions, operator will have to crank the
starter motor manually; when operator decides that the engine has fired, he/she should release the button and
start relay will be deactivated, safety on delay will start.

APC715 Pump Unit Controller User Manual Page 12 of 62
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 PD information in the controller page of “ABOUT” to us.
4.3 LCD DISPLAY
4.3.1 MAIN DISPLAY
Main screen is divided into left and right separate viewing areas, use to select a viewing
area; the selected area is marked with in its upper right corner. Both viewing areas show
pages; use to scroll the pages and to scroll the screen.
★Engine, including as below,
Engine status, engine temperature, engine oil pressure, fuel level, configurable sensor 1, battery
voltage, charger voltage, accumulated run time, accumulated start times.
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, fuel consumption,
total fuel consumption and so on. (Different engine with different parameters).
★Pump Unit, including as below,
Outlet pressure, pump flow, pump head, config. sensor 2~6 (can be set as temperature sensor,
pressure sensor or level sensor).
Formula: Pump Head = (Outlet pressure - Static Pressure)/0.0098.
Pump flow is calculated according to relation curve of outlet pressure and flow; the relation curve
should be set by users according to the actual usage.
★Alarm:
Display all warnings, shutdown alarms, cooling shutdown alarms and the corresponding information.
NOTE: For ECU warnings and shutdown alarms, if the alarm information is displayed, check engine according to it,
otherwise, please check the manual of engine according to SPN alarm code.
★Event log
Records all start/stop events (shutdown, cooling shutdown, manual/auto start or stop) and the real
time when event occurs.
★Others, including,
Time and date, maintenance due time, input/output ports status.
★About, including,
Issue time of software and hardware version, product PD number.
★Miscellaneous, including:
Working mode, engine status, engine temperature, engine oil pressure, fuel level, outlet pressure,
config. sensor 2 (inlet pressure), accumulated run time, real-time clock.
Press in main screen can jump to miscellaneous screen.

APC715 Pump Unit Controller User Manual Page 13 of 62
★Status, including as below,
Engine speed, battery 1 voltage, engine status.
Table 6 Status Indicator
Indicator
Status
Green
Normal status; No alarm
Yellow
Warning or fault idle alarm occurs.
Red
Shutdown alarm occurs.
Example:
Engine
Pump
On load
Manual Mode
Normal Running
Outlet Pressure
1.0MPa 10bar 145psi
Config Sensor 2
45°C 113°F
Engine Temp.
85°C 185°F
Config Sensor 3
465kPa 4.65bar 67.4psi
Oil Pressure
465kPa 4.65bar
67.4psi
Config Sensor 4
100%
1500rpm
27.6V
Normal Running
Engine
Pump
Fuel Level
100%
Config Sensor 5
55°C 131°F
Config Sensor 1
85°C 185°F
Config Sensor 6
60°C 140°F
Battery Voltage 1
27.6V
Pump Flow
200m³/h
Battery Voltage 2
27.6V
Pump Head
102m
1500rpm
27.6V
Emergency Stop Alarm

APC715 Pump Unit Controller User Manual Page 14 of 62
4.3.2 USER MENU AND PARAMETERS SETTING MENU
Press and hold for more than 3 seconds to enter into user menu;
★Parameter
After entering the correct password (factory default password is 00318), you can enter into
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 User Accumulated Run A, User Accumulated Run B, Engine Accumulated Run time and
Accumulated Start times.
Parameter setting including as following,
★Timer settings
★Engine settings
★Analog sensor settings (Engine temperature, engine oil pressure, fuel level, config. 1~6, outlet
pressure)
★Input port settings
★output port settings
★GOV settings
★Pump settings
★Module settings
★Scheduling and maintenance settings
Example,
Return
>Start Delay
>Stop Delay
>Preheat Delay
>Cranking Time
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
Table 1: Use to scroll settings,
to enter settings (table 2), to exit
settings menu.
Timers >
Engine
Temp. Sensor
OP Sensor
Level Sensor
Config Sensor 1
Config Sensor 2
Config Sensor 3
Config Sensor 4
Config Sensor 5
Return
>Start Delay
Table 2: Use to scroll settings
Timers >
>Stop Delay

APC715 Pump Unit Controller User Manual Page 15 of 62
Engine
Temp. Sensor
OP Sensor
Level Sensor
Config Sensor 1
Config Sensor 2
Config Sensor 3
Config Sensor 4
Config Sensor 5
>Preheat Delay
>Cranking Time
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
(table 3), to enter settings (table 4),
to return to previous menu (table 1).
Return
>Start Delay
>Stop Delay
>Preheat Delay
Table 3: Use to scroll settings,
to enter settings (table 4), to return
to previous menu (table 1).
Timers >
Engine
Temp. Sensor
OP Sensor
Level Sensor
Config Sensor 1
Config Sensor 2
Config Sensor 3
Config Sensor 4
Config Sensor 5
>Cranking Time
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
>Start Delay
>Stop Delay
>Preheat Delay
Table 4: Press to enter settings (table
5), to return to previous menu (table
6).
00008
>Cranking Time
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
>Start Delay
>Stop Delay
>Preheat Delay
00008
Table 5: Press to change cursor
position, are used for changing
>Cranking Time

APC715 Pump Unit Controller User Manual Page 16 of 62
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
cursor value, Confirm setting (table 4),
exit setting (table 4).
>Start Delay
>Stop Delay
>Preheat Delay
00008
Table 6: are used for changing
the setting contents. Confirm setting
(table 4), to return to previous menu
(table 1).
>Cranking Time
>Crank Rest Time
>Safety On Time
>Start Idle Time
>Warming Up Time
>Cooling Time
>Stop Idle Time
>ETS Hold Time
>Wait Stop Time
NOTE: Pressing can exit setting directly during setting.

APC715 Pump Unit Controller User Manual Page 17 of 62
4.4 AUTO START/STOP OPERATION
Auto mode is selected by pressing the button; a LED besides the button will illuminate to
confirm the operation.
Auto Start Sequence:
1. When “Remote Start (On Load)” is active, “Start Delay” timer is initiated;
2. When start delay is over, preheat relay energizes (if configured), “Preheat Delay XX s” information
will be displayed on LCD;
3. After the above delay, the Fuel Relay is energized, and then one second later, the Start Relay is
engaged. If the pump unit fails to fire during the “Cranking Time”, 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 start sequence
will be terminated, the Fail to Start fault will be displayed on LCD.
5. In case of successful crank attempt, the “Safety On” timer is activated, during this period, Low Oil
Pressure, High Temperature, Under speed and Charge Alternator Failure alarms are inactive. As
soon as this delay is over, “Start Idle” delay is initiated (if configured).
6. During “Start Idle” delay, under speed alarm is inhibited. When this delay is over, “Warming up”
delay is initiated (if configured).
7. After the “Warming up” delay, if engine speed has reached on-load requirements, then the pump
close relay will be energized; pump unit will take load; pump unit will enter into Normal Running
status.
NOTE: In case of “Remote Start (off Load)”, the procedure is the same, except for step No. 7: the pump close relay
will NOT be energized, generator will NOT accept load.
Auto Stop Sequence,
1) When the “Remote Start” signal is deactivated while the “Remote Stop” signal is active, the “Stop
Delay”is initiated.
2) Once this stop delay has expired, the Pump Unit Breaker will open and the “Cooling Delay” is then
initiated. Should the Remote Start signal be re-activated during the cooling down period, the unit
will return running status. Once the “Cooling Delay” expires, the “Stop Idle” delay is initiated.
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 and
complete stop is detected automatically
5) "Fail to Stop Delay" begins, complete stop is detected automatically.
6) Pump unit is placed into “After Stop Time” after its complete stop. Otherwise, fail to stop
alarm is initiated and the corresponding alarm information is displayed on LCD (If pump unit
stopped successfully after “Failed to Stop” alarm, it will enter “After stop time” and remove
alarm).
7) Pump unit is placed into its standby mode after its “After Stop Time”.

APC715 Pump Unit Controller User Manual Page 18 of 62
4.5 MANUAL START/STOP OPERATION
1Manual Start: Manual mode is selected by pressing the button; a LED besides the
button will illuminate to confirm the operation; then press button to start the unit; can
automatically detect crank successful, and unit accelerates to high-speed running
automatically.
When “Idle Run without Load” is enabled, the unit is idle running when crank succeed; unit
accelerates to high-speed running automatically and takes load after pressing key by
manual.
With high temperature, low oil pressure and over speed during pump unit running, controller
can protect it to stop quickly (please refer to No.2~7 of Auto start operation for detail
procedures).
2MANUAL STOP: Press can stop the running pump unit. (please refer to No.2~7 of
Auto stop operation for detail procedures).
NOTE: In “manual mode”, users can control the pump unit on load or off load via “Load” key.
4.6 ON-LOAD CONTROL PROCEDURE
When controller is in Manual mode, manual control will be executed. Users can control the pump unit
on load or off load by pressing key. The pump unit will unload automatically when it stops.
If “Idle Run without Load”is selected “Disable”,
Start the pump unit in manual mode and press key during the pump unit normal running, then
the engine will take load; press key again, the engine will unload and pump unit enters high
speed running.
If “Idle Run without Load” is selected “Enable”,
Start the pump unit in manual mode and it enters into idle running process. The pump unit will not
enter into normal running status until key is pressed and it will take load as soon as the
on-load requirements have reached. When the pump unit is normally running with load, press
key once again will lead to the unit’s offload (i.e. load relay deactivated); then the “cooling delay”
will be initiated. Once this has expired, the unit will enter into idle running status.
When controller is in Auto mode, auto control will be executed. The pump unit will take load
automatically when it is normally running and the on-load requirements have reached while unload
automatically when it stops.

APC715 Pump Unit Controller User Manual Page 19 of 62
4.7 ADJUST SPEED CONTROL PROCEDURE
Users can set the outlet pressure as the rated value simply by adjusting the engine speed. The
“Adjust Speed Control” was divided into auto control and manual control.
Manual Adjust Speed: Adjust Speed mode is selected by pressing the button; In this interface,
users can adjust speed using navigational button: , manual adjust speed; , auto adjust speed;
, manual raise speed; , manual drop speed. “ , manual raise speed” and “, manual
drop speed” buttons are active only when pump unit is normal running under “Manual Adjust
Speed” mode.
Auto Adjust Speed: Under this mode, during the unit is normal running, the controller will
automatically adjust the outlet pressure/inlet pressure according to the pre-set value to rated
speed and maintain it steadily.
The “Auto Adjust Speed” was divided into relay adjust speed, GOV adjust speed and CAN adjust
speed.
Relay Adjust Speed: Control the engine servo motor simply by using speed raise relay and speed
drop relay.
GOV Adjust Speed: Control the electronic speed regulator simply by using GOV analog signal.
Users should set parameters according to the actual situation as different GOVs have different
parameters.
CAN Adjust Speed: Control the ECU engine speed simply by using CAN interface. Parameters
setting and speed adjustment method are same as GOV. SW1 should set as 5.0 and SW2 as 2.0
while adjusting.

APC715 Pump Unit Controller User Manual Page 20 of 62
5PROTECTION
5.1 WARNINGS
When controller detects warnings, it only sends warning signal but not shut down the unit.
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 selects “Warn”, it will initiate a warning alarm.
4
Fail To Stop
After “fail to stop” delay, if unit is not stop completely, it will
initiate a warning alarm.
5
Charge Alt Fail
When the controller detects that charger voltage has fallen
below the pre-set value, it will initiate a warning alarm.
6
Battery 1 Over Voltage
When the controller detects that battery 1 voltage has
exceeded the pre-set value, it will initiate a warning alarm.
7
Battery 1 Under
Voltage
When the controller detects that battery 1 voltage has fallen
below the pre-set value, it will initiate a warning alarm.
8
Maintenance Due
When maintenance countdown time is 0 and the action selects
“Warn”, it will initiate a warning alarm.
9
ECU Warn
If an error message is received from ECU via J1939, it will
initiate a warning alarm.
10
Temperature Sensor
Open Circuit
When the controller detects that the temperature sensor is
open circuit and the action selects “Warn”, it will initiate a
warning alarm.
11
High Temperature
When the controller detects that engine temperature has
exceeded the pre-set value, it will initiate a warning alarm.
12
Low Temperature
When the controller detects that engine temperature has fallen
below the pre-set value, it will initiate a warning alarm.
13
Oil Pressure 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.
14
Low Oil Pressure
When the controller detects that the oil pressure has fallen
below the pre-set value, it will initiate a warning alarm.
15
Level Sensor Open
When the controller detects that the level sensor is open
circuit and the action selects “Warn”, it will initiate a warning
alarm.
16
Low Fuel Level
When the controller detects that the fuel level has fallen below
the pre-set value, it will initiate a warning alarm.