Mebay DC5 D MK3 Series User manual

DC5xD MK3
GENSET CONTROLLER
USER MANUAL
DC50D MK3
DC52D MK3

DC5xD MK3 GENSET CONTROLLER USER MANUAL
1
Software Version
No.
Version
Date
Note
1
V1.0
2020-08-01
Original release.
2
V1.1
2021-02-04
Unify the description of input and output ports.
Chongqing Mebay Technology Co.,Ltd
Add: No6-2,Building 4, Gangan Rd, Jiangbei District, Chongqing.
Tel：[phone]
Fax：[phone]
Web：http://www.mebay.cn
http://www.cqmb.cn
E_mail：[email protected]

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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Symbol Description
Symbol
Description
Note
Remind operators to operate correctly, otherwise it may cause
the equipment not to work correctly.
Be care
It is indicated that potential hazards can damage equipment
without proper precautions.
Warning
It is indicated if appropriate preventive measures are not taken,
potentially dangerous situations may result in death, serious
personal injury or significant property losses.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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Warning
1. The installation of this equipment must be carried out by professionals.
2. When installing and operating the controller, please read the entire instruction
manual first.
3. Any maintenance and commissioning of the equipment must be familiar with all the
equipment.
4. t, safety standards and precautions in advance, otherwise it may cause personal
injury or damage to related equipment.
5. The engine must have an overspeed protection device independent of the
controller system to avoid casualties or other damage caused by engine out of
control.
6. After the installation of the controller is completed, please verify that all protection
functions are valid.
Be Care
1. Please keep the good connection of the power supply of the controller. Do not
share the connection lines of the positive and negative electrodes of the battery
with the floating charger.
2. During the operation of the engine, do not disconnect the battery, otherwise it may
cause damage to the controller.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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CATALOGUE
1. Summary................................................................................................... 5
2. Main Features...........................................................................................5
3. Parameters Display..................................................................................6
4. Protection...................................................................................................6
5. Parameters................................................................................................7
6. Overall Dimension and Wiring Diagram............................................... 8
7. Installation instruction............................................................................15
8. Panel and display...................................................................................16
9. Control and operation instruction.........................................................19
10. Warnings and Shutdown Alarms.......................................................21
11. Parameters setting...............................................................................28
12. Fault finding.......................................................................................... 41
Notes:
1. All rights reserved. No part of this duplication may be reproduced in any material
form (including photocopying or storing in any medium by electronic means or others)
without the written permission of the copyright holder.
2. MEBAY Technology reserves the rights to change the contents of this document
without prior notice.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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1. Summary
This series controller is specialized for Diesel / Gasoline / Gas Genset Start,
Stop, Parameters monitoring, faults-checking as well as data setting.
3.5 inch LCD screen display with brand new UI design is adapted in this
controller that the relative failures can be displayed directly. All the parameters can
be displayed by simulated indicators and words. Besides, LCD screen can display
various faults in the same time that the genset will be stopped once it can’t work
smoothly.
There are Chinese/English interface options, more language can be set
according to user’s request. All the parameters can be configured through the front
face buttons or use programmable interface by RS485 or USB to adjust via PC. It can
be widely applied for all kinds of auto control system of gensets.
2. Main Features
There are four Models under DC5xD MK3 series.
DC50D MK3: used for single machine automation. Start/Stop through remote
start signal.
DC52D MK3: Based on DC50D MK3, it adds Mains monitoring and AMF
(Mains/Generator automatic switching control), especially suitable for the automation
system composed by mains and genset.
DC50DR MK3: Based on DC50D MK3, it adds RS485 port.
DC52DR MK3: Based on DC52D MK3, it adds RS485 port.
Dual core 32bit high performance single chip microcomputer.
3.5 inch 240 * 128 high-resolution LCD screen, Available in 6 languages, user’s
language set if necessary.
Indicator and number display through UI surface.
Acrylic material is adapted to protect the screen.
Silicone panels;
USB Port: parameters can be set even without power through USD port to monitor
in real time.
With RS485 communication port, can achieve “Three Remote” functions via
MODBUS protocol.
Various kinds of parameters display.
Input/output function, status can be shown directly.
Real time clock inside: preset time operate and auto maintenance is available.
Genset working plan can be set as per week or month.
Maintenance countdown function, can set maintenance time or date.
The black box function can save the relevant parameters of the unit when the fault
alarm occurs in real time, and it is convenient to find the cause of the fault.
Totally 6relay’s output, among which 4 relay output can be self-configurable, each
relay can be set as max 20 functions, besides, there are 3 groups as non-contact
terminals.
With 5 switches input, up to 20 functions optional;
3 sensor simulation input connectors, the oil pressure sensor is compatible with
voltage signal input, and various display units can be configured.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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Battery charging control function,which can protect the battery according to battery
voltage status.
Sensor can be self-defined by front face button or PC software.
Adapt to 3P4W,1P2W,2P3W(120V/240V,50/60HZ)
Various of crank conditions (RPM, Frequency, Oil Pressure) can be chosen.
Control Protection: Auto Start/Stop of genset, load transfer (ATS control) and
perfect failure display and protection.
Standard water-proof rubber gasket. The waterproof can reach IP54
Module design: All the connections are adapted with European connectors so that
installation, connection, repair and replacement can be more easily.
3. Parameters Display
Engine RPM
Engine oil pressure
Engine temperature
Engine fuel level
Engine battery voltage
Charging voltage
Mains Frequency (only for DC52D MK3)
Mains phase voltage L-N (only for DC52D MK3)
Mains phase voltage L-L (only for DC52D MK3)
Generator 3 Phase voltage L-N
Generator 3 Phase voltage L-L
Generator 3 phase current A
Generator Frequency Hz
Generator Power Factor COS φ
Generator active power KW
Generator apparent power KVA
Generator reactive power KVar
Real-time load rate %
Current load rate %
Average loading rate %
Current consumption KWH
Total consumption KWH
Total Crank times
Cumulative power on time of controller
Current running time
Total running time
Maintenance notice
Switches input status display
Output status display of relays
Current date and time;
4. Protection
Over speed
Under speed

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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Low oil pressure
High temperature
Low fuel level
External emergency alarm
D+ open
RPM Lost
Sensor Open
Over Frequency
Under Frequency
Over voltage
Under voltage
Over current
Non-balance of current
Over power
Maintenance expire
Low water level alarm
Emergency Stop
Crank failure
Battery over voltage
Battery under voltage
The charger fails to charge
Charger charging failure
Stop Failure
5. Parameters
Options
Parameters
Working voltage
DC8V----36V Continuous
Power consumption
Standby：24V：MAX 1W
Working：24V：MAX5W
AC Voltage Input
1P2W 30VAC-276VAC (ph-N)
2P3W 30VAC-276VAC (ph-N)
3P4W 30VAC-276VAC (ph-N)
Rotate speed sensor
Frequency
50-10000Hz
MAX Accumulating Time
99999.9Hours（Min Store time:6min）
Fuel Relay Output
Max 16Amp DC+VE Supply voltage
Start Relay Output
Max 16Amp DC+VE Supply voltage
AUX. OUTPUT 1
Max 16Amp DC+VE Supply voltage
AUX. OUTPUT 2
Max 16Amp DC+VE Supply voltage

DC5xD MK3 GENSET CONTROLLER USER MANUAL
8
AUX. OUTPUT 3
5AMP Non-contact normal open output
AUX. OUTPUT 4
5AMP Non-contact normal open output
Excitation output
Max 1AMP DC+VE supply voltage
Switch value input
Available if connecting with Battery -
Working condition
-25-65℃
Storage condition
-40-85℃
Protection Level
IP54：when waterproof rubber gasket is added
between controller and its panel
Insulation strength
Apply AC1.5kV voltage between high voltage terminal
and low voltage terminal; The leakage current is not
more than 3mA within 1min.
Overall dimension
210mm*160mm*50mm
Panel cutout
186mm*142mm
Weight
0.85Kg
6. Overall Dimension and Wiring Diagram
Overall Dimension:

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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Descriptions of terminal connection
No.
Function
Description
Cable
cross
sectional
area
1
Battery Negative Input B-
Controller power supply input B-.
2.5mm2
2
Battery Negative Input B+
Controller power supply input B+.
2.5mm2
3
Emergency Stop Input
B+ voltage input is active, and connected to
2.5mm2

DC5xD MK3 GENSET CONTROLLER USER MANUAL
10
emergency stop normal closed button.
4
Fuel Output
+VE output, Max 16Amp
1.5mm2
5
Crank Output
+VE output, Max 16Amp.
1.5mm2
6
Aux. Ouput 1
+VE output, Max 5Amp.
1.5mm2
7
Aux. Ouput 2 Normal close
Passive Output, Max 5Amp.
1.5mm2
8
Aux. Ouput 2 Common
1.5mm2
9
Aux. Ouput 2 Normal open
1.5mm2
10
Aux.Output 3
Passive normally open output, Max 5Amp.
1.5mm2
11
Aux.Output 3
1.5mm2
12
Aux.Output 4
Passive normally open output, Max 5Amp.
1.5mm2
13
Aux.Output 4
1.5mm2
14
Charging excitation output
+VE output, Max 0.9Amp.
1.0mm2
15
Speed sensor -
Use a shielded wire to connect the speed
sensor.
1.0mm2
16
Speed sensor +
1.0mm2
17
Temperature Sensor
Connect sensor input.
1.0mm2
18
Oil pressure sensor
1.0mm2
19
Fuel level sensor
1.0mm2
20
Aux. Input 1
The grounding is valid according to the
function selection switch input.
1.0mm2
21
Aux. Input 2
1.0mm2
22
Aux. Input 3
1.0mm2
23
Load CT Secondary L1
Current Transformer Secondary Rated 5A.
1.5mm2
24
Load CT Secondary L2
1.5mm2
25
Load CT Secondary L3
1.5mm2
26
Load CT Secondary ICOM
Connect to the common.
1.5mm2
27
Generator Voltage U
Connected to the power generation output R
phase.
1.0mm2
28
Generator Voltage V
Connected to the power generation output S
phase.
1.0mm2
29
Generator Voltage W
Connected to the power generation output T
phase.
1.0mm2
30
Generator Voltage N2
Connected to the power generation output N
phase.
1.0mm2
31
Mains Voltage R
Connected to the mains U phase.
1.0mm2
32
Mains Voltage S
Connected to the mains V phase.
1.0mm2
33
Mains Voltage T
Connected to the mains W phase.
1.0mm2
34
Mains Voltage N1
Connected to the mains N phase.
1.0mm2
38
Aux. Input 4
The grounding is valid according to the
function selection switch input.
1.0mm2
39
Aux. Input 5
1.0mm2
40
Sensor common GND
Connect the battery negative or outer.
1.0mm2

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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41
+5V Output
Connect the power supply of the oil
pressure sensor with the output voltage
signal, with a maximum of 50mA.
1.0mm2
F1
RS485 B
A 120 Ω shielded wire and good grounding
are recommended.
1.0mm2
F2
RS485 A
1.0mm2
F3
RS485 SCR
1.0mm2
DC50D MK3 3-phase 4-wire Typical Wiring Diagram
G
P1 P2
S1S2
P1 P2
S1S2
P1 P2
S1S2
U
V
W
N2
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
TO LOAD SWITCHING DEVICE
FUSE 2A
21
20
14 18 17
5
4
3
21 19
+VE
29
W
28
27
V
U
25
CT2
30
N2
MODEL: DC50D MK3
INPUTS
BATTERY NEGATIVE MUST BE GROUNDED
24
23 11
CT1 CT3 CTN
15 16
MPU
33
T
3231
SR
34
N1
F2 F3 F1
RS485 SCR RS485 (B-)
D+
12
26
RS485 (A+)
RS485
10
22
6 7
13
38 39
DEBUG
USB
M.BA
M.D+
M.EM
8 9 40
(DC16A)
(DC16A)
(DC5A)
(DC8-36V)
(DC0.5A)
(AC0-300V)
(AC0-6A)
(DC5A)
GEN CURRENT GEN VOLTS
AUX.OUTPUT 1
AUX.OUTPUT 2
BATTERY FUSE 10 AMPS
FUSE 20 AMPS
EMERGENCY
STOP
SWITCH
ALT
CRANK
REMOTE START
LOW OIL PRESSURE ALARM
HIGH COOLANT TEMP ALARM
LOW COOLANT LEVEL ALARM
LOW FUEL LEVEL WARNING
1.No. 40/E2 common sensor lines must be
securely attached to the vicinity of the sensor body.
2.To ensure reliable operation of the module and
the measuring accuracy, power lines as much as
possible and do not share power cable crude and
other devices.
REMARK:
FUEL
AC
0.5-70Vpp
0-8KHz
AUX INPUT 1 AUX INPUT 2 AUX INPUT 3 AUX INPUT 4 AUX INPUT 5
COOLANT TEMP
OIL PRESSURE
FUEL LEVEL
SENDER COMMON
41
+5VDC OUTPUT MAX 50mA
(AC5A)
AUX.OUTPUT 3
(AC5A) (AC0-300V)
MAIN VOLTS
AUX.OUTPUT 4
Note: Please don’t move battery during running status or it may cause the
controller broken!
WARNING: When generator is on-load, C. T. secondary must not be open
circuit, Otherwise, the high voltage generated will pose a danger to personal safety.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
12
DC52D MK3 3-phase 4-wire Typical Wiring Diagram
P1 P2
S1S2
G M
P1 P2
S1S2
FUSE 2A FUSE 2A
P1 P2
S1S2
U
V
W
N2
R
S
T
N1
L1L2L3 N
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
FROM MAINS
MECHANICAL INTERLOCK
TO LOAD SWITCHING
DEVICE
ELECTRICAL
INTERLOCK
21
20
14 18 17
5
4
3
21 19
+VE
29
W
28
27
V
U
25
CT2
30
N2
MODEL: DC52D MK3
INPUTS
BATTERY NEGATIVE MUST BE GROUNDED
24
23 11
CT1 CT3 CTN
15 16
MPU
33
T
3231
SR
34
N1
F2 F3 F1
RS485 SCR RS485 (B-)
D+
12
26
RS485 (A+)
RS485
10
22
6 7
13
38 39
DEBUG
USB
M.BA
M.D+
M.EM
8 9 40
(DC16A)
(DC16A)
(DC5A)
(DC8-36V)
(DC0.5A)
(AC0-300V)
(AC0-6A)
(DC5A)
GEN CURRENT GEN VOLTS
BATTERY FUSE 10 AMPS
FUSE 20 AMPS
EMERGENCY
STOP
SWITCH
ALT
CRANK
REMOTE START
LOW OIL PRESSURE ALARM
HIGH COOLANT TEMP ALARM
LOW COOLANT LEVEL ALARM
LOW FUEL LEVEL WARNING
1.No. 40/E2 common sensor lines must be
securely attached to the vicinity of the sensor body.
2.To ensure reliable operation of the module and
the measuring accuracy, power lines as much as
possible and do not share power cable crude and
other devices.
REMARK:
FUEL
AC
0.5-70Vpp
0-8KHz
AUX INPUT 1 AUX INPUT 2 AUX INPUT 3 AUX INPUT 4 AUX INPUT 5
COOLANT TEMP
OIL PRESSURE
FUEL LEVEL
SENDER COMMON
41
+5VDC OUTPUT MAX 50mA
(AC5A) (AC5A) (AC0-300V)
MAIN VOLTS
AUX.OUTPUT 1
AUX.OUTPUT 2
AUX.OUTPUT 3 AUX.OUTPUT 4
Note: Please don’t move during running status or it may cause the
controller broken!
WARNING: When generator is on-load, C. T. secondary must not be open
circuit, Otherwise, the high voltage generated will pose a danger to personal safety.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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DC50D MK3 1-phase 2-wire Typical Wiring Diagram
G
P1 P2
S1S2
U
N2
FUSE 2A
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
TO LOAD SWITCHING DEVICE
29
W
28
27
V
U
25
CT2
30
N2
24
23 11
CT1 CT3 CTN
33
T
3231
SR
34
N1
12
26 10 13
(AC0-300V)
(AC0-6A)
GEN CURRENT GEN VOLTS (AC5A) (AC5A) (AC0-300V)
MAIN VOLTS
1 PHASE 2 WIRE
MODEL: DC50D MK3
AUX.OUTPUT 3 AUX.OUTPUT 4
DC50D MK3 2-phase 3-wire Typical Wiring Diagram
G
P1 P2
S1S2
P1 P2
S1S2
U
V
N2
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
TO LOAD SWITCHING DEVICE
29
W
28
27
V
U
25
CT2
30
N2
24
23 11
CT1 CT3 CTN
33
T
3231
SR
34
N1
12
26 10 13
(AC0-300V)
(AC0-6A)
GEN CURRENT GEN VOLTS (AC5A) (AC5A) (AC0-300V)
MAIN VOLTS
2 PHASE 3 WIRE
MODEL: DC50D MK3
FUSE 2A
AUX.OUTPUT 3 AUX.OUTPUT 4

DC5xD MK3 GENSET CONTROLLER USER MANUAL
14
DC52D MK3 1-phase 2-wire Typical Wiring Diagram
P1 P2
S1S2
G M
U
N2
R
N1
L1 N
1 PHASE 2 WIRE
FUSE 2A FUSE 2A
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
FROM MAINS
MECHANICAL INTERLOCK
TO LOAD SWITCHING DEVICE
ELECTRICAL
INTERLOCK
29
W
28
27
V
U
25
CT2
30
N2
MODEL: DC52D MK3
24
23 11
CT1 CT3 CTN
33
T
3231
SR
34
N1
12
26 10 13
(AC0-300V)
(AC0-6A)
GEN CURRENT GEN VOLTS (AC5A) (AC5A) (AC0-300V)
MAIN VOLTS
AUX.OUTPUT 3 AUX.OUTPUT 4
DC50D MK3 2-phase 3-wire Typical Wiring Diagram
P1 P2
S1S2
G M
P1 P2
S1S2
U
V
N2
R
S
N1
L1 L2 N
FUSE 2A FUSE 2A
CTs MUST BE 5 AMP SECONDARY
FROM GENERATOR
FROM MAINS
MECHANICAL INTERLOCK
TO LOAD SWITCHING DEVICE
ELECTRICAL
INTERLOCK
2 PHASE 3 WIRE
29
W
28
27
V
U
25
CT2
30
N2
MODEL: DC52D MK3
24
23 11
CT1 CT3 CTN
33
T
3231
SR
34
N1
12
26 10 13
(AC0-300V)
(AC0-6A)
GEN CURRENT GEN VOLTS (AC5A) (AC5A) (AC0-300V)
MAIN VOLTS
AUX.OUTPUT 3 AUX.OUTPUT 4

DC5xD MK3 GENSET CONTROLLER USER MANUAL
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7. Installation instruction
The controller is fixed by four special fixing members and screws, and the screws
of the metal fasteners cannot be too tight.
Panel Cutout: W220mm*H160mm.
Note: If the controller is installed directly in the genset shell or other fluctuated
equipment, the rubber pad must be installed.
Battery Voltage Input
DC5xD MK3 controller is suitable for 8-36V DC battery voltage. Battery negative
must be reliably connected to the enclosure of the engine. The controller power
supply B+ and B- must be connected to battery positive and negative, and the wire
size must not be less than 2.5mm2.
NOTE:
In case of floating charger connect charger output to battery positive and negative
directly, then, connect battery positive and negative poles to controller positive and
negative power supply.
Output and relay expansion
Note: All outputs of the controller are relay contacts. The maximum current
capacity is described in the "Parameters" in this manual. Please use it in the relay
current capacity. If an extended relay is needed, add a continuous current diode
(when the extended relay coil is DC) or a resistance-capacitance loop (when the
extended relay coil is AC) to both ends of the coil to prevent interference with the
controller or other equipment.
AC current input
Current transformer with rated secondary current 5A must be externally connected
to the controller current input.
WARNING: When generator is on-load, C. T. secondary must not be open
circuit, Otherwise, the high voltage generated will pose a danger to personal safety.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
16
Withstanding voltage test
If withstanding voltage test is conducted after the controller has already been
installed onto the control panel, please unplug all controller terminal connections in
order to prevent high voltage from damaging it.
8. Panel and display
DC50D MK3
DC52D MK3
Running
Warning
Alarm
Alarm record
Load transfer
on MAN mode
On load
Gens status
LCD
Left
Up
Right
OK/HOME
Down
LED Test/MUTE
Stop
Manual Start
Manual
Auto
Running
Warning
Alarm
Close/On
Gens on load
Gens status
Mains Status
Mains on load
Close/On
Test
LED Test/MUTE
Right
Down
Stop
Manual Start
Manual
Auto
Left
Up
OK/HOME
LCD

DC5xD MK3 GENSET CONTROLLER USER MANUAL
17
Key Function Description
KEYS
NAME
Main Function
Stop
Reset
Revert
Can stop generator under manual/auto mode;
Can reset shutdown alarm
During stop procession, pressing this key again can stop
generator immediately.
Pressing this key can cancel the setting and back to
upper class under edition.
Under the setting mode with checking data, the data can
be saved and system will exit after pressing.
Start
Start the genset under manual mode.
Pressing this key can start the genset under manual
testing mode.
Manual
Pressing this key will set the module into manual mode.
Auto
Pressing this key will set the module into auto mode.
DC50D MK3
Records
Pressing this key to check the alarm records under stop
mode.
DC52D MK3
Test
Pressing this key to come into manual testing mode.
Under testing mode, pressing MANUAL can start the
genset and transfer to normal loading after running which
is to test if the auto start is in normal status.
LED Test/
Warning clear
Test if all LED lights are ok, pressing this key to test if all
lighted, all off when loosen it.
Under warning, pressing this key can clear warning and
controller will re-check warning.
Under alarm, pressing this key can clear the buzzer call.
Pressing this key in 3 seconds can clear the buzzer call,
pressing it again in 3 seconds can recover the buzzer call.
Gens/ Mains
Close/On
Under manual mode, pressing this key can transfer load
to genset/mains.
Left
Under display mode, pressing this key to turn left page.
Under edition mode, pressing this key to move the digit.
Right
Under display mode, pressing this key to turn right page.
Under edition mode, pressing this key to move the digit.
Up
Under display mode, parts of the page can move up.
Under edition mode, pressing this key to move the digit
or increase the numbers.
Under records mode, pressing this key to move the digit.

DC5xD MK3 GENSET CONTROLLER USER MANUAL
18
Down
Under display mode, parts of the page can move down.
Under edition mode, pressing this key to move the digit
or decrease the numbers.
Under records mode, pressing this key to move the digit.
OK
UI Change
Confirm the change under edition mode.
Page exited under records checking mode.
Black UI and white UI can be switched when Pressing.
In standby state, press for 3 seconds to enter the
parameter setting mode.
+
Setting mode
Pressing OK and STOP simultaneously to come into
setting mode
+
DC52D MK3
Alarm
Records checking
Pressing STOP and RIGHT to check the records and
any buttons pressed to exit from the page.
Engine flywheel teeth automatic adjustment
1)Crank disconnect must be set to include both "speed" and "frequency" options.
2)When the generator frequency and engine speed are not zero, press
and for more than 0.5 seconds, the controller will automatically calculate
and save the number of flywheel teeth according to the generation frequency and
generator poles.
3)After calculating and saving the number of flywheel teeth successfully, the
controller shows: " Flywheel xxx teeth, saved successfully!"
Alarm records checking
DC5XD MK3 controller can save 14 groups of alarm records which contains time,
gens parameter, engine parameter and so on.How to check the alarm records:
1)Enter alarm record page:
a) DC50D MK3: under stop mode, press to come into alarm records page;
b) DC52D MK3: press and simultaneously to come into alarm records
page;
2)Press to turn upper digit and press to turn lower digit in order to
choose the record you need. Press to confirm the record and come into
history records checking page.
3)Press to turn lower records under records checking page. Press to
turn upper records and press to revert back to alarm history records page.
4)Exit from records page: In the history records page and checking page, press
to exit;

DC5xD MK3 GENSET CONTROLLER USER MANUAL
19
9. Control and operation instruction
Manual test mode: (only DC52D MK3 has this function)
Press and make sure it is in the stop position before starting.
Press “ ” and the test file indicator is on. At this time, it is detected whether the
connection of each sensor is normal. If the sensor is open, the sensor opens an
alarm. If it is normal, the unit start process is executed in the following sequence after
pressing the " ". automatically switch to Generator provide the power when the
unit is running normally. Press “ ” The controller performs the parking process at
the following timing:
0RPM
Idle
Rated speed
Pre-
heat
delay
5S
Long-
est
pre-oil
supply
delay
0S
Start
Crank
delay
2S 8S
Safe
time
8S
Start
idle
time
5S
Longest
speed
increasing
time
120S
Idle
Rated speed
Pre-
heat
delay
Longest
temperature
increasing
time
10S
Longest
voltage
built/
increasing
time
120S 10S
rated
runn-
ing
Cooling
running time
30S
Stop
idle
time
5S
ETS
solen-
oid
hold
10S
Wait
Stop
30S
warming
up time
Crank
test
time
Manual Start Mode
press and make sure it is in the stop position before starting.
Press “ ” and the test file indicator is on. At this time, it is detected whether the
connection of each sensor is normal. If the sensor is open, the sensor opens an
alarm. If it is normal, the unit start process is executed in the following sequence after
pressing the " ". automatically switch to Generator provide the power when the
unit is running normally. Press “ ” The controller performs the parking process at
the following timing:
Manual start and stop process:
0RPM
Idle
Rated speed
Pre-
heat
delay
5S
Long-
est
pre-oil
supply
delay
0S
Start
Crank
delay
2S 8S
Safe
time
8S
Start
idle
time
5S
Longest
speed
increasing
time
120S
Idle
Rated speed
Pre-
heat
delay
Longest
temperature
increasing
time
10S
Longest
voltage
built/
increasing
time
120S 10S
rated
runn-
ing
Cooling
running time
30S
Stop
idle
time
5S
ETS
solen-
oid
hold
10S
Wait
Stop
30S
warming
up time
Crank
test
time
After the manual start is successful, pressing the "automatic key" can be
converted into an automatic file. The specific working time is as follows: