DORNA TECHNOLOGY DLM1-0D40S2G User manual

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Thank you for purchasing and using the DORNA DLM1 series inverters. Please read the operation
manual carefully before putting the inverter to use so as to correctly install and operate the inverter
and ensure safety. Please keep the operation manual handy for future reference, maintenance,
inspection and repair.
The inverter must be installed, tested and commissoned by specialized personnels. The marks of
and other symbols in the manual remind you of the safety precautions
during the handling, installation, running and inspection. Please follow
these instructions to make sure the safe use of the inverter. In case of any doubt please contact our
local agent for consultation. Our professional persons are willing and ready to serve you.
The manual is subject to change without notice.
Danger indicates wrong use may kill or injure people.
！Caution indicates wrong use may damage the inverter or mechanical system.
Danger
！Caution

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Danger
● Be sure to turn off the input power supply before wiring.
●Do not touch any internal electrical circuit or component when the charging lamp is still on
after the AC power supply is disconnected, which means the inverter still has high voltage inside and
it is very dangerous.
● Do not check components and signals on the circuit boards during operations.
● Do not dissemble or modify any internal connecting cord, wiring or component of the inverter
by yourself.
●Be sure to make correct grounding connection of the earth terminal of the inverter.
● Never remodel or replace control boards and components by yourself. It may expose you to an
electrical shock or explosion, etc.
！Caution
● Do not make any voltage-withstanding test with any component inside the inverter. These
semi-conductor parts are subject to the damage of high voltage.
● Never connect the AC main circuit power supply to the output terminals U.V Wof the inverter.
●The main electric circuit boards of CMOS and IC of the inverter are subject to the effect and
damage of static electricity. Don’ t touch the main circuit boards.
● Installation, testing and maintenance must be performed by qualifed professional personnel.
● The inverter should be discarded as industrial waste. It is forbidden to burn it

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Contents
Ⅰ.Safety Precautions............................................................................................................................4
1.1 Introduction...........................................................................................................................4
1.2 Before Power-up....................................................................................................................4
1.3 During Power-up...................................................................................................................6
1.4 JOG operation.......................................................................................................................6
1.5 During Operation..................................................................................................................6
ⅡProduct Introduction and installation..............................................................................................8
2.1 DLM1 Series model description...........................................................................................8
2.2 Particular Specifcations........................................................................................................9
2.3 General Specifications..........................................................................................................9
2.4 Storage and Installation .....................................................................................................11
2.5 Installation Site and Environment.....................................................................................11
2.6 Installation and Direction...................................................................................................12
ⅢWiring...........................................................................................................................................13
3.1 Main Circuit Wiring Schematic Diagram.........................................................................13
3.2 Descriptions of Terminal Blocks........................................................................................14
3.3 Basic Connection Diagram.................................................................................................15
3.4 Precautions on Wiring........................................................................................................16
3.5 Optional parts......................................................................................................................18
ⅣMaintenance and Troubleshooting................................................................................................19
4.1 Maintenance check Notes...................................................................................................19
4.2 Regular inspection program...............................................................................................19
4.3 Fault information and troubleshooting.............................................................................20
ⅤInstruction of the Digital Operator................................................................................................23
5.1 Description of the Digital Operator...................................................................................23
5.2 Description of Indicator Lamp Status...............................................................................23
5.3 Operation Examples ...........................................................................................................24
ⅥParameter Overview......................................................................................................................25
Appendix 1: Function List..................................................................................................................53
Appendix 2: Installation Dimensions..................................................................................................59
Appendix 3: MODBUS Communication Protocol .............................................................................60

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Ⅰ.Safety Precautions
1.1 Introduction
The inverter has been strictly and well packed before ex-work. In consideration of various
factors during the transportation special attention should be paid to the following points before
the assembly and installation. If there is anything abnormal please notify the dealer or the
relevant people of our company.
● Check if the inverter has got any damage or deformation during the transportation and handling.
● Check if there is one piece of DLM1series inverter and one user manual when unpacking it.
●Check the information on the nameplate to see if the specifications meet your order (Operating
voltage and KVA value).
● Check if there is something wrong with the innerparts, wiring and circuit board.
● Check if each terminal is tightly locked and if there is any foreign article inside the inverter.
● Check if the operator buttons are all right.
1.2 Before Power-up
！Caution
Check to be sure that the voltage of the main circuit AC power supply matches the input
voltage of the inverter.
E terminals are grounding terminals. Be sure to make correct grounding connection of the
earth terminals of the motor and the inverter for safety.
No contactor should be installed between the power supply and the inverter to be used for
starting or stopping of the inverter. Otherwise it will affect the service life of the inverter.
Danger
●R(L),S,T(N) terminals are power input terminals, never mixed with U.V.W terminals. Be sure
that the wiring of the main circuit is correct. Otherwise it will cause damages of the inverter when
the power is applied to it.

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！Caution
Do not carry the front cover of the inverter directly when handling. It should be handled with
the base to prevent the fall-off of the front cover and avoid the dropping of theinverter, which
may possibly cause the injuries to people and the damages to the inverter.
Mount the inverter on a metal or other noncombustible material to avoid the risk of fire.
Install the inverter in a safe location avoiding high temperature, direct sunlight, humid air or
water.
Keep the inverter from the reach of children or persons not concerned. The inverter can only
be used at the places accredited by our company. Any unauthorized working environment
may have the risks of fire, gas explosion, electric shock and other incidents.
Install a heat sink or other cooling device when installing more than one inverter in the same
enclosure so that the temperature inside the enclosure is kept below 40℃to avoid overheat
or the risk of fre.
Be sure to turn off the powersupply before dissembling or assembling the operation keypanel
and fxing the front cover to avoid bad contact causing faults or non-display of the operator.
●Do not install the inverter in a space with explosive gas to avoid the risk of explosion.
●If the inverter is used at or above 1000m above seal level, the cooling effciency will be
reduced, so please run it by de-rating.
Do not install any switch component like air circuit breaker or contactor at the output of the
inverter. If any of such components must be installed because of the requirements of process
and others, it must be ensured that the inverter has nooutput when the switch acts. In addition,
it is forbidden to install anycapacitor for improvementof power factor or anyvaristor against
thunder at the output. Otherwise it will cause malfunctions, tripping protection and damages
of components of the inverter. Please remove them as shown in the below diagram.
It will affect the service life of the inverter.If a contact is connected to the front end of input
of the inverter to control its starts and stops. Generally it is required to control it through
Control terminals. Special attention should be paid to its use in the case of frequent starts and
stops.
●Please use an independent power supply for the inverter. Do avoid using the common
power supply with an electrical welder and other equipment with strong disturbance. Otherwise
it will cause the protection or even damage of the inverter.
U
Inverter V
W
M
KM
X
X

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1.3 During Power-up
Danger
●Do not plug the connectors of the inverter during the power up to avoid any surge into the
main control board due to plugging, which might cause damage to the inverter.
●Always have the protective cover in place before power up to avoid electrical shock.
1.4 JOG operation
Procedures
Panel display after
operation
Pilot Lamp
Power-up
F000
FWD、STOP light
00.00
FWD、STOP light
05.00
FWD、STOP light
RUN
F05.0
FWD、RUN light and Fans
operation
STOP
F05.0
FWD、RUN light and Fans
operation
1.5 During Operation
Danger
●Never connect or disconnect the motor set while the inverter is in running. Otherwise it will
cause over-current trip and even burn up the main circuit of the inverter.
●Never remove the front cover of the inverter while the inverter is powered up to avoid any
injury of electric shock.
●Do not come close to the machine when the fault restart function is used to avoid anything
unexpected. The motor may automatically restart after its stop.
●The function of STOP Switch is only valid after setting, which is different with the use of
emergent stop switch. Please pay attention to it when using it.

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！Caution
●Do not touch the heat braking resistor, or other heat elements. These can become very hot.
●Be sure that the motor and machine is within the applicable speed ranges before starting
operation because the inverter is quite easy to run from lower speed to higher speed.
●Do not check the signals on circuit boards while the inverter is running to avoid danger.
●Be careful when changing the inverter settings. The inverter has been adjusted and set before
ex-work. Donot adjust itwantonly. Please make proper adjustmentsaccording to the required
functions.
●Do consider the vibration, noise and the speed limit of the motor bearings and the mechanical
devices when the inverter is running at or above the frequency of 50Hz.

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ⅡProduct Introduction and installation
2.1 DLM1 Series model description
T：Three phase
S：Single phase
Inverter series DLM 1-0D75 T 2 G
Inverter capacity
G: general-purpose
P: Light load
Rated input voltage：
2：220V 4：380V
7：660V/690V
Plant code
【1】
【2】
【3】
【6】
【5】
【4】
【１】Inverter series
【2】Plant code
【3】Inverter capacity
Mark
Specification
Mark
Specification
Mark
Specification
DLM
M series
1
General
purpose
0D40
400W
DLB
B series
0D75
750W
DLH
H series
01D5
1.5KW
02D2
2.2KW
【4】Power phase
【5】Rated input
voltage
【6】Inverter type
Mark
Specification
Mark
Specification
Mark
Specification
S
Single phase
2
220V
G
General-purpose
T
Three phase
4
380V
P
Light load

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2.2 Particular Specifcations
Model
Input Voltage
Power
(KW)
Inverter
capacity(KV
A)
Output
Current
(A)
Suitable
Motor
(KW)
DLM1-0D40S2G
Single phase 220V
50Hz
0.4
1.0
2.5
0.4
DLM1-0D75S2G
Single phase 220V
50Hz
0.75
2.0
5.0
0.75
DLM1-01D5S2G
Single phase 220V
50Hz
1.5
2.8
7.0
1.5
2.3 General Specifications
Inverter Series
DLM1
Control Mode
SPWM
Input Power
330~440V for 380V power; 170~240V for 220V power
5-Digits Display &
Status Indicator
Lamp
Displaying frequency, current, revolution, voltage, counter, temperature,
forward or reserve running, and fault, etc.
Communication
RS-485
Operation
Temperature
-10~40℃
Humidity
0-95% Relative Humidity(without dew)
Vibration
Below 0.5G
Frequency
Control
Range
0.10~600.00Hz
Accuracy
Digital: 0.01%(-10~40℃),Analog: 0.1% (25±10℃)
Set
Resolution
Digital: 0.01Hz, Analog: 1‰ of Max. Operating Frequency
Output
Resolution
0.01Hz
Operator
Setting
Method
Press directly←∧∨to set (or use potentiometer).
Analog
Setting
Method
External Voltage 0-5V，0-10V，4-20mA，0-20mA.
Other
Functions
Frequency lower limit, starting frequency, stopping frequency & three
skip frequencies can be respectively set.
General
Control
Ramp Control
Selectable 4-speed steps ramp-up and -down time (0.1-6500s).
V/F Curve
Set V/F curve at will
Torque
Control
Torque increase is settable by max. 10.0%. The starting torque can reach
150% at 1.0Hz.

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Multi-Inputs
6 multi-function input terminals for 8–speed steps control, program
operation, switching of 4-speed Ramp, UP/DOWN function, counter,
external emergency stop and other functions.
Multi-
Outputs
2 multi-function output terminals for displaying of running, zero speed,
counter, external abnormity, program operation and other information
and warnings.
Other
Functions
AVR (auto voltage regulation), Deceleration stop or free-stop, DC brake,
auto reset and restart, frequency track, PLC control, traverse function,
drawing control, auto energy-savings etc.
Protection
Functions
Overload
Protection
Electronic relay protection motor
Drive (150%/1 min for constant torque; 120%/1min for fans/pumps)
FUSE
Protection
FUSE activates and motor stops.
Over-voltage
DC Voltage ＞400V for 220V class
DC Voltage ＞800V for 380V class
Under-
Voltage
DC Voltage ＜200V for 220V class
DC Voltage ＜400V for 380V class
Instant Stop
and
Restart
Restarted by frequency track after instantaneous stop.
Stall
Prevention
Anti-stall during Acc/Dec run
Output End
Shorts
Electronic circuit protecting
Other
Functions
Heat sink over-heat protection, restriction of reverse running, direct start
after power on, fault reset, parameter lock, etc.

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2.4 Storage and Installation
The invertermust be keptin its originalpackage box before installation. Pay attention to the followings
when keeping it in storage if the inverter is not used for the time being:
●It must be stored in a dry place without rubbish or dust.
●The suitable temperature for storage is between -20℃and +65℃.
●The relative humidity required is 0-95% without condensation.
●There is no corrosive gas or liquid in the storage ambience.
●It’ s better to lay the inverter on a rack and keep it in a proper package.
●It is better not to store the inverter for long time. Long time storage of the inverter will lead
to the deterioration of electrolytic capacity. If it needs to be stored for a long time make sure
to power it up one time within a year and the power-up time should be at least above five
hours. When powered up the voltage must be increased slowly with a voltage regulator to
the rated voltage value.
2.5 Installation Site and Environment
The inverter should be installed at the following location:
●Ambient temperature -5℃to 40℃with good ventilation;
●No water drop and low moisture;
●Free from direct sunshine, high temperature and heavy dust fall;
●Free from corrosive gas or liquid;
●Less dust, oil gas and metallic particles;
●Free from vibration and easy for service and inspection;
●Free from the interference of electromagnetic noise;
Attention: The ambient conditions of the inverter will affect its service life.

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2.6 Installation and Direction
●There must be enough space left around the inverter for easy maintenance and cooling. See
Diagram;
●The inverter must be installed vertically with good ventilation for effective cooling;
●If there is any instability when installing the inverter, please put a flat board under the inverter
bottom base and install it again. If the inverter is installed on a loose surface, stress may cause
damage of parts in the main circuit so as to damage the inverter;
●The inverter should be installed on non-combustible materials, such as iron plate.
●If several inverters are installed, upper and lower, together in one cabinet, please add heat
dissipation plates and leave enough space between the inverters. See Diagram.

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ⅢWiring
3.1 Main Circuit Wiring Schematic Diagram
Power supply:
● Verify that the inverter’s rated voltage coincides with AC power
supply voltage to avoid a damage of the inverter.
No fuse breaker:
● Refer to the related list.
Ground fault circuit interrupter:
● Use one of anti-high harmonic.
Electromagnetic contactor:
● Note: Do not use the electromagnetic contactor as the on/off
button of power supply for the inverter.
AC reactor:
●It is recommended to install an AC reactor for power factor
improvement if the input capacity is more than 1000KVA
Inverter:
●Be sure to make correct connections of the main circuit wires and
control signal wires of the inverter.
●Be sure to make correct setting of parameters for the inverter.

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3.2 Descriptions of Terminal Blocks
1、Arrangement of Main circuit Terminals
T
S
R
E
U
V
W
R
P
PR
2、Arrangement of Control Circuit Terminals
FA
FB
FC
DRV
FWD
REV
RST
SPL
SPM
SPH
GND
AM
VI
AI
+10
3、Function Description of Main circuit Terminals
Symbol
Function Description
R、S、T
Input terminal of AC line power.
U、V、W
Output terminal of the inverter
P+、PR
Connector for braking resistor (optional). Connector for DC reactor
E
Ground terminal
4、Function Description of Control Circuit Terminals
Symbol
Function Description
Default setting
FWD
Multi- Digital Input 1
Forward
REV
Multi- Digital Input 2
Reverse
RST
Multi- Digital Input 3
Reset
SPH
Multi- Digital Input 4
High-speed
SPM
Multi- Digital Input 5
Medium-speed
SPL
Multi- Digital Input 6
Low-speed
GND
Common & Ground
+10
Power Supply for Analog Setting
+10V
VI
Multi-Analog input
Voltage
AI
Multi-Analog input
0~20mA
DRV
Multi-Digital Output 1 (optical-
coupler)
DC24V/100mA
FA/FB/FC
Multi- Digital Output (Relay)
3A/250V
AM
Multi-Analog Output
0~10V
RS+ 、RS-
RS485 Communication port

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3.3 Basic Connection Diagram
The wiring ofthe inverter is divided into two parts,main circuit terminal connections and control
circuit terminal connections. The user can see the main circuit terminals and the control circuit
terminals after removing the cover of enclosure. The terminals must be connected correctly as the
following wiring circuit diagrams.
The following diagram shows the Default setting standard connection of Model DLM1
FWD
Inverter
R
S
T
Single/Three Phase
220V
GND
DRV
W
V
U
E
VI
REV
SPH
SPM
SPL
RST
GND
+10V
GND
E
AI
Ground
terminal FC
FA
FB
Power input
Multi- Digital Output
(Relay)
3A/250VAC
3A/30V DC
M
24V 100mA
AM
GND Analog output
RS-485
Communication
port
1、GND
2、+5V
6、GND
5、GND
4、RS-
3、RS+
Multi-
Digital Input

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3.4 Precautions on Wiring
(1) For the main circuit wiring:
●While wiring the sizes and specifcations of wires should be selected and the wiring should
be executed according to the electrical engineering regulations to ensure the safety.
●It is better to use shielded wire or wire and conduit for power cord and ground the shielded
layer or two ends of wire conduit.
●Be sure to install a Non Fuse Breaker (NFB) between the power supply and the input
terminals (R.S.T). (If using ground fault circuit interrupter, please choose one corresponding
to high frequency)
●Never connectAC power to the output terminal (U.V.W) of the inverter.
●Output wires mustn’t be in touch of the metal part of the inverter enclosure, or it will result
in earth short-circuit.
●Phase-shifting capacitors, LC, RC noise filters, etc, can never be connected to the output
terminals of the inverter.
●The main circuit wire must be enough far away from other control equipments.
●When the wiring between the inverter and the motor exceeds 15 meters (shielded wire) or 50
meters (No shielded wire), much higher dV/dT will be produced inside the coil of the motor,
which will cause the destruction to the interlay or insulation of the motor. Please use a
dedicatedAC motor for the inverter or add a reactor at the inverter.
●Please lower the carrier frequency when there is a longer distance between the inverter and
the motor. Because the higher the carrier frequency is the bigger the leakage current of high-
order harmonics in the cables will be. The leakage current will have unfavorable effect on
the inverter and other equipment.
Specifcations of Non Fuse Breaker and Wire
Model
NFB
(A)
Input wire
(mm2)
Output wire
(mm2)
Control wire
(mm2)
Screw
DLM1-0D40S2G
16
2.5
2.5
1
M4
DLM1-0D75S2G
16
2.5
2.5
1
M4
DLM1-01D5S2G
16
2.5
2.5
1
M4
Attention: The parameters in the list are only for reference and should not be regarded as standard.
(2) For control circuit wiring (signal line)
●The signal line should be separately laid in a different conduit with the main circuit wire to
avoid any possible interference.
●Please use the shielded cable with the size of 0.5-2mm2 for signal lines.
●Use the control terminals on the control panel correctly according to our needs.
(3) Grounding
●Grounding terminal E Be sure to make correct grounding 220V class: The third
grounding method (Grounding resistance should be 100Ω or lower.)
380V class: The special third grounding method (Grounding resistance should be 10Ω or
lower.)
●Choose grounding wires according to the basic length and size of the technical requirements
of the electric equipment.
●Do avoid sharing grounding wire with other large power equipment such as electric welder,

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power machine, etc. The grounding wire should be kept away from the power supply wires
for large power equipment.
●The grounding method for several inverters together should be done as the frst and second
diagrams below. Avoid the third.
(a) Good
(b) Good
(c) Not Good

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3.5 Optional parts
Optional parts
Function
Circuit breaker and CFCI
Wiring protected of the drive should be sure to set the circuit breaker in
the power supply side. Please use a GFCI with anti higher harmonics.
Electromagnetic contactor
In order to avoid burning the brake resistor, please set the
electromagnetic contactor used on the coil to ground surge absorber.
Surge absorbers
Absorption of electromagnetic contactor and control relays switch
inrush current.
Isolation transformer
Output and input of the isolation transformer can reduce interference.
The braking resistor
Renewable energy consumption of the motor and shorten the
deceleration time.
(1)CFCI
Within the inverte, within the motor and the input and output leads all have the capacitance of
the ground. Due to the higher carrier frequency used, the inverter earth leakage current is large,
especiallythe high-capacity models. When using the GFCI, sometimes our malfunction can lead
to protection circuit. So when you use of GFCIshould pay attention to the GFCI selection, while
appropriate to reduce the carrier frequency, shorten lead and so on.
(2)Braking resistor
Model
Braking resistor’ s Metering
Brake torque 10% ED
Special motor
KW
W
Ω
DLM1-0D40S2G
80
200
125
0.4
DLM1-0D75S2G
100
200
125
0.75
DLM1-01D5S2G
300
100
125
1.5
Attention:
①Please select the company developed resistance value and using frequency;
②If you use not our company provided the braking resistor and braking module, which led
to the drive or other equipment damage, our ompany does not bear any responsibility;
③When you install the braking resistor, you should consider the safety of the environment,
the flammable, and the distance is greater than 100mm converter;
④If you want to change the resistance and power numbers, please contactwith us;
⑤If you need a braking resistor or braking resistor,you need order separately;
⑥Such as large mechanical inertia, please increase the capacity of the braking resistor.

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ⅣMaintenance and Troubleshooting
4.1 Maintenance checks Notes
●Before maintenance check, please be sure to cut off the inverter input (RST) power;
●Make sure the power of inverter is cut off, the display disappears, and until the internal high-
voltage light is off, then you can start the implementation of maintenance, inspection;
●During the inspection, the internal power, cables and cable roots must be not pull up and
mismatch, otherwise it will lead to inverters not work;
●Do not leave any parts inside the inverter, when mounting screws and other accessories;
●After installing should keep the inverter clean, avoid dust, oil mist and moisture。
4.2 Regular inspection program
●Please make sure the voltage of supply power conforms to the required voltage of inverter;
(Especially attention to the power cable and the motor if there is damaged.)
●Please check wiring terminals and connectors, if there are loose; (Please make sure power
line terminals are not off shares.)
●Please pay attention to dust inside the inverter, iron and corrosive liquids;
●Please do not measure the insulation resistance of the inverter;
●Please check the inverter output voltage, output current, output frequency; (That can not be
much difference between the results and the rated.)
●Please check the surrounding temperature, if there is between -5 ℃~ 40 ℃and the
installation environment is well ventilated;
●Humidity: maintained at 90% or less; (Can not bear water droplets.)
●Please pay attention to abnormal sound and vibration in operation; (The drive can not be
placed where vibration.)
●Please clean the vent regularly.

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4.3 Fault information and troubleshooting
DLM series inverters have relatively complete protections including overload,phase short circuit,
to-ground short circuit, undervoltage, over temperature and overcurrent protection. When the inverter
protection triggers, please follow the information in the table below to identify the reasons.
Fault Display
Fault content and description
Approach
Acceleration-Overcurrent
1. Please check the motor for short circuit,
especially output lines;
2. Prolong acceleration time;
3. The capacity of inverter is too small, please
increase the capacity;
4. Reduce the torque increase set value.
Constant speed Overcurrent
1. Please check the motor for short circuit, and
output line insulation;
2. Check whether the motor jis jammed or
mechanical load is abruptly changed;
3. The capacity of inverter is too small, please
increase the capacity;
4. Please check if the grid voltage is abruptly
changed.
Deceleration-Overcurrent;
Stop-Overcurrent
1. Please check the motor for short circuit, and
output line insulation;
2. Increase the deceleration time;
3. The capacity of inverter is too small, please
increase the capacity;
4. DC braking is too large, please reduce the
value of DC braking;
5. Inverter failure, contact distributor.
Short circuit to ground
1. Please check the motor for short circuit, and
output line insulation;
2. Inverter failure, contact distributor.
Stop-Overvoltage
Acceleration-Overvoltage
Constant-speed-Overvoltage
Deceleration-Overvoltage
1. Increase the deceleration time, or install
brake resistor;
2. Improve grid voltage.
Blown fuse
Contact distributor