Inovance MD320 Series User manual

MD320/MD320N User Manual Preface
1
Preface
Precautions
The drawings presented in this instructions are sometimes shown without

covers or protective guards.Always replace the equipment’s cover or
protective guard as specied rst,and the operate the products in accordance
with the instructions.
The drawings presented in the instructions are typical examples and may not

match the product you received.
These instructions are subject to change due to product improvement,

specication modication, specication modication.
If you want to order the manual due to loss or damage, please contact our

company agents in each region or our company customer service center
directly.
If there is still any problem during using the product, please contact our

company customer service center directly.
Our Service Hotline: [phone].

Thank you for purchasing MD320/MD320N series inverters.
This instruction manual describes how to properly use MD320/MD320N series inverter. Please
read the instruction manual carefully before using(Before installation,operation,maintenance
and inspection).Besides, please use the product after understanding the safety precautions.

Preface MD320/MD320N User Manual
2
The MD series of frequency converters is a new generation of modular, high performance
frequency converters that represent the future of inverters. Compared with traditional inverters,
in meeting the performance and function demands of customers, this series does not use
multiple products (which add external manufacturing, sales, user and maintenance costs),
but instead creates a modular design based on the specic needs of the customer, resulting
in a customized platform that incorporates a single series of products that are a multi-module
assemblies.
MD series inverter creates three new concepts in the future inverter sector:
1) It creates the three-layer modular structure standard of new generation of inverter. Refer to
Figure 1 for the comparison between traditional inverter and MD series modular inverter;
2) It creates the physical standard for dividing the customer requirements according to such
main modules as motor drive module, general functional module and specialized functional
module as well as various sub-modules. Refer to Figure 2 for the schematic diagram for the
modular structure of MD series inverter;
3) It leads the new industry trend of popularizing the vector control technology.
Such concepts will bring about profound influences on the inverter industry. The modular
structure is described as follows:
Traditional
Inverter
MD Series Inverter
Specialized Industrial Module
General-Purpose Module
High-Performance Motor
Control Module
Top-layer Module
Middle-layer Module
Bottom-layer Module
Fig. 1 Comparison between Traditional Inverter and MD Series Modular Inverter
Introduction

MD320/MD320N User Manual Preface
3
1) The bottom-layer module of the MD series inverter is high-performance motor control
module and consists of V/F, speed sensorless vector control (SVC) and vector control. It is
mainly responsible for high performance control and overall protection of the motor, controlling
the motor through sending running commands to multiple channels or performing close loop
vector control through encoder interface.
2) The middle-layer module of MD series inverter is general functional module, which mainly
includes some basic functions of the inverter, such as PID control, MS speed, and swing
frequency and so on. According to the degree of complexity of functions, Inovance Technology
provides two sub-modules for options of the customers, that is, MD320 functional module and
MD300 functional module. Refer to Table 1 for the difference between the two modules.
Table 1 Difference between MD320 and MD300 Functional Modules
MD320 MD300
Input/output terminal
Five DI (bidirectional input
and one high-speed port), two
AI, two DO (one high-speed
port), one AO, and one relay
(expandable I/O)
Four DI (unidirectional input
and one high-speed port), two
AI, one DO, one AO, and one
relay
Control mode SVC、VC、V/F SVC、V/F
Analog setup mode Straight line mode
Multiple-point fold line mode,
which is easy to realize the
functions of the injection
molding machine
MS speed Be able to realize 16S speed Be able to realize 4S speed
PLC Simple PLC Be able to realize 16S timing
operation None
Swing frequency and
xed-length control Available None
Main/auxiliary setup Main/auxiliary reference of
any channel Only A12 can be auxiliary setup
Communication function Via the expansion card Via the specialized card
PID control Available None
Multiple-point V/F Available None

Preface MD320/MD320N User Manual
4
IE Interface Card Water Supply
Control Card
I/O Expansin
Card
Bus Card SCI Card LCD Keyboard Tension Control
Car d
Logic Control
Car d
LED Keyboar d Parameter Copy Wireless Remote
Control Card
Analog Signal
Isolation Card
Zero Function Control Injection Molding Machine Card
WEB
MD320 Control Module MD300 Control Module
Ethernet
Hig-performance Control
Module
Common PG Card
PG Card with
Frequency Division
3) The top-layer module of MD series inverter is a specialized industry module and also a
platform provided to satisfy the specialized industry demands, enabling the customers to
either apply the existing solutions or perform secondary development according to their own
needs. Refer to Figure 2 “MD Series Inverter Modular Structure Diagram” for the top-layer sub-
modules.
Fig. 2 MD Series Inverter Modular Structure Diagram
MD series inverter is particularly unique in respect of easy-to-use performance. The entire
system has independent ventilation, which can be installed outside or inside the radiator
cabinet;directly input DC bus terminal and DC powered fan that enable the standard products
to be compatible with the DC bus running mode, perfect user password protection, shortcut
menu design that makes the complex commission easier, standard RJ45 interface applied in
the operation panel and the communication port that ensures reliability and greatly reduces
the application cost, MOBUS bus protocol and expansion card that can be compatible with
PROFIBUS, DeviceNet, CANopen and other bus controls, and functional expansion card with
automatic identication function. All these features reect that the MD series inverter strictly
complies with the principle “Respect the Customers” during the design process.
This manual is a guide to the operations of MD series inverter and MD320 control module. For
the use of MD300 control module, see the operation manual for details.
This manual provides the user with related precautions and instructions for the prototyping,
installation, parameter setting, on-site commissioning, and routine Repair and Maintenance of
inverter. In order to use this series of inverter correctly, please read this manual carefully prior
to operation and keep it properly for future use. The supporting equipment customers shall
distribute this manual together with the equipment to the nal users.

MD320/MD320N User Manual Preface
5
Unpacking and inspection:
Please conrm carefully when unpacking the box:
1) If the model and inverter rated values on the nameplate are the same as your order. The
box contains the equipment, certicate of conformity, user manual and warranty card.
2) If the product is damaged during the transportation. If there is any omission or damage,
please contact our company or the supplier immediately.
First time use:
The users who use this product for the rst time shall read this manual carefully. For any doubt
on certain functions and performances, please contact the technical support personnel of our
company for help so as to use this product properly.
With commitment to the constant improvement of the inverter products, our company may
change the information provided without additional notice.
MD320 series inverter complies with the following international standards, and some
products have passed the CE certification IEC/EN61800-5-1:2003 “Safety Regulations on
Commissionable Electric Drive System” and IEC/EN 61800-3:2004 Commissionable Electric
Drive System: Third Part: Electromagnetic Compatibility Standard and Specic Testing Method
for the Product (Comply with IEC/EN61800-3 standard under correct installation and use as per
Article 7.3.2 and 7.3.6)
MD320N:
MD320N series is an upgrade of the MD320 series in terms of external appearance and
structural design. Its function is the same as MD320 series inverters.
The difference between MD320N series inverter and MD320 series inverter are as follows:
MD320N series inverter’s enclosure are divided into three parts, it contains top- enclosure, 1)
middle- enclosure, and bottom- enclosure. The appearance color is light gray. MD320
series inverter’s shell are divided into two parts, it contains upper cover plate and down
cover plate. And there is no bottom-shell. The appearance color is blue.
MD320N series has a built-in radiator.There is bottom-enclosure wrapping, MD320 series 2)
radiator is externally installed.
MD320N series cooling fan is in the bottom-shell without screws, and easily installed. 3)
MD320 series cooling fan is in the radiator with screws.
MD320N series keyboard can be removing without screws xed. MD320 series keyboard 4)
panel is installed on the cover plate.
MD320N series has a Fence-type Lead-Out Wires hole. MD320 series has a closed Lead-5)
Out Wires hole with a Rubber Seal Ring.
The installation dimensions are different. See the MD320N series mounting dimension6)
table for details.

Preface ...................................................................................1
Chapter 1 Safety and Precautions..........................................10
1.1 Safety precautions..............................................................................................................10
1.2 Precautions........................................................................................................................13
Chapter 2 Product Information................................................18
2.1 Designation Rules.............................................................................................................. 18
2.2 Nameplate..........................................................................................................................18
2.3 MD320 Inverter Series........................................................................................................19
2.4 Technical Specications.....................................................................................................21
2.5 Physical Appearance and Dimensions of Mounting Hole...................................................23
2.6 Optional Parts....................................................................................................................33
2.7 Routine Repair and Maintenance of inverter.....................................................................35
2.8 Instructions on Warranty of Inverter....................................................................................36
2.9 Prototyping Guide...............................................................................................................37
2.10 Guide to Prototyping of Brake Components.....................................................................37
Chapter 3 Mechanical and Electric Installation........................42
3.1 Mechanical installation ......................................................................................................42
3.2 Electrical Installation...........................................................................................................45
Chapter 4 Operation and Display............................................60
4.1 Introduction to Operation and Display Interface.................................................................60
4.2 Description of Function Code Viewing and Modication Methods .....................................61
4.3 Shortcut Menu Operation Mode........................................................................................62
4.4 Extended Function Menu....................................................................................................64
4.5 Method of Viewing Status Parameter.................................................................................64
4.6 Password Setting...............................................................................................................65
4.7 Automatic Tuning of Motor Parameters..............................................................................65
Chapter 5 Function Parameter Table.......................................68
Chapter 6 Parameter Description............................................94
Group F0 Basic Function.........................................................................................................94
Contents

Group F1 Motor Parameters...................................................................................................102
Group F3 V/F Control Parameters..........................................................................................107
Group F4 Input Terminal..........................................................................................................110
Group F6 Start/Stop Control....................................................................................................124
Group F8 Auxiliary Function....................................................................................................132
Group FA Process Control PID Function.................................................................................142
Group FB Swing Frequency, Fixed Length and Count............................................................145
Group FC MS Speed Function and Simple PLC Function......................................................147
Group FD Communication Parameters...................................................................................153
Group FF Factory Parameters (Reserved)...............................................................................153
Group FP User Password........................................................................................................153
Chapter 7 EMC (Electromagnetic Compatibility)....................156
7.1 Denition............................................................................................................................156
7.2 EMC Standard Description................................................................................................156
7.3 EMC Guide........................................................................................................................156
Chapter 8 Fault Diagnosis and Solution.................................160
8.1 Fault Alarm and Countermeasures....................................................................................160
8.2 Common Fault and Resolution...........................................................................................173
Appendix: Card Description...................................................176
Appendix A: Description of Common PG Card (MD32PG).....................................................176
Appendix B: Description of Long-line Drive PG Card (MD32PG3)..........................................181
Appendix C: Description of IO Expansion Card (MD32IO)......................................................182
Appendix D: Description of Communication Card (MD32MBS)..............................................186
Appendix E: Description of Parameter Copy Card (MDCP)....................................................188
Appendix F: MD320 serial communication protocol................................................................189

Preface MD320/MD320N User Manual
8
Connection to peripheral divices
Do not install the capacitor or surge suppressor at the output side of the inverter, otherwise

it may cause inverter failure or capacitor and surge suppressor damaged.
The Inverter input / output (main circuit) contains harmonic components, it may interfere

with inverter accessories communications equipment. Therefore, install anti-interference
lter, make minimize interference.
The details of peripheral equipments and accessories selection refer to the manual of

peripheral equipments.
Diagram for the connection to peripheral divices
Grounding
Grounding
Motor drive
Output Side
Noise Filter
Inovance Inverter
Input Side
Noise Filter
Electromagnetic Contactor
AC Reactor
Electromagnetic Contactor
Brake Resistors （Optional）
Brake Unit （or Energy Feedback Unit）(Optional)
DC Reactor (standard configuration)
To insure the safety, please use electromagnetic contactor.Please do
not use the electromagnetic contactor to start and stop the inverter,
otherwise,it will reduce the lifetime of the inverter.
Suppress the high order harmonic to improve the power factor.
In order to prevent electric shock, the motor
and inverter must be well grounded.
It can give full play to the regenerative capacity of the inverter, please
use according to needs.
To insure the safety, please use electromagnetic contactor.Please do
not use the electromagnetic contactor to start and stop the inverter,
otherwise,it will reduce the lifetime of the inverter.
Three-phase AC power supply
Please use the power supply which is within the inverter
specification

1
Safety and Precautions

Safety and Precautions MD320/MD320N User Manual
10
Chapter 1 Safety and Precautions
Safety de nition:
In this manual, safety precautions are divided into two types below:
Danger arising due to improper operations may cause severe hurt or even death.
Caution: Danger arising due to improper operations may cause moderate hurt or light hurt
or equipment damage.
During the installtion, commissioning and maintenance of the system, plesase make sure to
follow the safety and precautions of this chapter. In case of a result of illegal operations, caused
any harm and losses is nothing to do with the company.
1.1 Safety precautions
1.1.1 Before Installation:
1.1.2 During the Installation:
Danger
Do not use the damaged inverter or inverter with missing parts. Otherwise,

there may be risk of injury.
Use the motor with Class B or above insulation. Otherwise, there may be

risk of electric shock.
Danger
Carefully handled when loading, otherwise it may damage the inverter.

Please don’t use the damaged driver or missing parts inverter, there may be

risk of injury.
Do not touch the control system, otherwise it will cause static electricity.

Danger
Mount the inverter on incombustible surface like metal, and keep away from

 ammable substances. Otherwise it may cause  re.
Do not loose the set screw of the equitment, especially the screws marked in

RED.
Danger arising due to improper operations may cause severe hurt or even death.
Caution: Danger arising due to improper operations may cause moderate hurt or light hurt

MD320/MD320N User Manual Safety and Precautions
11
1.1.3 During wiring:
Caution
Do not drop the lead wire stub or screw in the inverter. Otherwise it may

damage the inverter.
Please install the driver in the place where there is no direct sunlight or no

vibratory.
When more than two inverters are to be installed in one cabinet, due attention

shall be paid to the installation locations (refer to Chapter 3 Mechanical and
Electrical Installation) to ensure the heat sinking effect.
Danger
Operation shall be performed by the professional engineering technician.

Otherwise there will be danger of electric shock!
There shall be circuit breaker between the inverter and power supply.

Otherwise, there may be  re!
Make sure the power is disconnected prior to the connection. Otherwise

there will be danger of electric shock!
The earth terminal shall be earthed reliably. Otherwise there may be danger

of electric shock.
Danger
Operation shall be performed by the professional engineering technician.

Otherwise there will be danger of electric shock!
There shall be circuit breaker between the inverter and power supply.

Otherwise, there may be  re!
Make sure the power is disconnected prior to the connection. Otherwise

there will be danger of electric shock!
The earth terminal shall be earthed reliably. Otherwise there may be danger

of electric shock.

Safety and Precautions MD320/MD320N User Manual
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1.1.4 Before Power-on:
1.1.5 Upon Power-on
Danger
Do not open the cover of the inverter upon power-on. Otherwise there will

be danger of electric shock!
Do not touch the inverter and its surrounding circuit with wet hand.

Otherwise there will be danger of electric shock!
Do not touch the inverter terminals (including control terminal). Otherwise

there will be danger of electric shock!
At power-on, the inverter will perform the security check of the external

heavy-current circuit automatically. Thus, at this time please do not touch
the terminals U, V and W, or the terminals of motor, otherwise there will be
danger of electric shock.
Danger
If parameter identification is required, due attention shall be paid to the

danger of injury arising from the rotating motor. Otherwise accident may
occur!
Do not change the factory settings at will. Otherwise it may damage the

equipment!
Caution
Please con rm whether the power voltage class is consistent with the rated

voltage of the inverter and whether the I/O cable connecting positions are
correct, and check whether the external circuit is short circuited and whether
the connecting line is  rm. Otherwise it may damage the inverter.The cover
must be well closed prior to the inverter power-on. Otherwise electric shock
may be caused.
The inverter is free from dielectric test because this test is performed prior to

the delivery. Otherwise accident may occur.
Danger
The cover must be well closed prior to the inverter power-on. Otherwise

electric shock may be caused!
Whether all the external  ttings are connected correctly in accordance with

the circuit provided in this manual. Otherwise accident may occur!

MD320/MD320N User Manual Safety and Precautions
13
1.1.7 During Repair
1.2 Precautions
1.2.1 Motor Insulation Inspection
1.2.2 Thermal Protection of the Motor
When the motor is used for the  rst time, or when the motor is reused after being kept, or when
periodical inspection is performed, it shall conduct motor insulation inspection so as to avoid
damaging the inverter because of the insulation failure of the motor windings. The motor wires
must be disconnected from the inverter during the insulation inspection. It is recommended to
use the 500V megameter, and the insulating resistance measured shall be at least 5MΩ.
If the ratings of the motor does not match those of the inverter, especially when the rated
1.1.6 During the operation:
Danger
Do not touch the fan or discharge resistor to sense the temperature.

Otherwise, you may get burnt!
Detection of signals during the operation shall only be conducted by

quali ed technician. Otherwise, personal injury or equipment damage may
be caused!
Caution
During the operation of the inverter, keep items from falling into the

equipment. Otherwise, it may damage the equipment!
Do not start and shut down the inverter by connecting and disconnecting the

contactor. Otherwise, it may damage the equipment!
Danger
Do not repair and maintain the equipment with power connection. Otherwise

there will be danger of electric shock!
be sure to conduct repair and maintenance after the charge LED indictor of

the inverter is OFF. Otherwise, the residual charge on the capacitor may
cause personal injury!
The inverter shall be repaired and maintained only by the quali ed person

who has received professional training. Otherwise, it may cause personal
injury or equipment damage!
Carry out parameter setting after replacing the inverter, all the plug-ins must

be plug and play when power outage.

Safety and Precautions MD320/MD320N User Manual
14
1.2.3 Running with Frequency higher than Standard Frequency
1.2.4 Vibration of Mechanical Device
1.2.5 Motor Heat and Noise
1.2.6 Voltage-sensitive Device or Capacitor Improving Power Factor at the Output Side
1.2.7 Switching Devices like Contactors Used at the Input and Output terminal
This inverter can provide output frequency of 0Hz to 300Hz. If the user needs to run the inverter
with frequency of more than 50Hz, please take the resistant pressure of the mechanical devices
into consideration.
The inverter may encounter the mechanical resonance point at certain output frequencies,
which can be avoided by setting the skip frequency parameters in the inverter.
Since the output voltage of inverter is PWM wave and contains certain harmonics, the
temperature rise, noise and vibration of the motor will be higher than those when it runs at
standard frequency.
Since the inverter output is PWM wave, if the capacitor for improving the power factor or
voltage-sensitive resistor for lightning protection is mounted at the output side, it is easy
to cause instantaneous over current in the inverter, which may damage the inverter. It is
recommended that such devices not be used.
If a contactor is installed between the power supply and the input terminal of the inverter, it
is not allowed to use the contactor to control the startup/stop of the inverter. If use of such
contactor is unavoidable, it shall be used with interval of at least one hour. Frequent charge
and discharge will reduce the service life of the capacitor inside the inverter. If switching
devices like contactor are installed between the output end of the inverter and the motor, it shall
ensure that the on/off operation is conducted when the inverter has no output. Otherwise the
modules in the inverter may be damaged.
1.2.8 Use under voltage rather than rated voltage
If the MD series inverter is used outside the allowable working voltage range as specied in this
manual, it is easy to damage the devices in the inverter.
When necessary, use the corresponding step-up or step-down instruments to change the
voltage.
power of the inverter is higher than the rated power of the motor, the relevant motor protection
parameters in the in the inverter shall be adjusted, or thermal relay shall be mounted to protect
the motor.
1.2.9 Change Three-phase Input to Two-phase Input
It is not allowed to change the MD series three-phase inverter into two-phase one. Otherwise,
it may cause fault or damage to the inverter.

MD320/MD320N User Manual Safety and Precautions
15
1.2.10 Lightning Impulse Protection
The series inverter has lightning over current protection device, and has certain self-protection
capacity against the lightning. In applications where lightning occurs fre quently, the user shall
install additional protection devices at the front-end of the inverter.
1.2.11 Altitude and Derating
1.2.12 Certain Special Use
1.2.13 Note of Inverter Disposal
1.2.14 Adaptable Motor
In areas with altitude of more than 1,000 meters, the heat sinking effect of the inverter may
turn poorer due to rare air. Therefore, it needs to derate the inverter for use. Please contact our
company for technical consulting in case of such condition.
If the user needs to use the inverter with the methods other than the recommended wiring
diagram in this manual, such as shared DC bus, please consult our company.
The electrolytic capacitors on the main circuit and the PCB may explode when they are burnt.
Emission of toxic gas may be generated when the plastic parts are burnt. Please dispose the
inverter as industrial wastes.
1) The standard adaptable motor is four-pole squirrel-cage asynchronous induction motor. If
such motor is not available, be sure to select adaptable motors in according to the rated current
of the motor. In applications where drive permanent magnetic synchronous motor is required,
please consult our company;
2) The cooling fan and the rotor shaft of the non-variable-frequency motor adopt coaxial
connection. When the rotating speed is reduced, the cooling effect will be poorer. Therefore, a
powerful exhaust fan shall be installed, or the motor shall be replaced with variable-frequency
motor to avoid the over heat of the motor.
3) Since the inverter has built-in standard parameters of the adaptable motors, it is necessary
to perform motor parameter identification or modify the default values so as to comply with
the actual values as much as possible, or it may affect the running effect and protection
performance;
4)The short circuit of the cable or motor may cause alarm or explosion of the inverter.
Therefore, please conduct insulation and short circuit test on the newly installed motor and
cable. Such test shall also be conducted during routine maintenance. Please note that the
inverter and the test part shall be completely disconnected during the test.

Safety and Precautions MD320/MD320N User Manual
16

2
Product Information

Product Information MD320/MD320N User Manual
18
Chapter 2 Product Information
2.1 Designation Rules
2.2 Nameplate
Inverter Series
S
Single Phase 220
Voltage Level
Motor Power 0.4 0.75 …… 11 15
Mark 0.4 0.7 …… 11 15
Adaptable Motor Power
Corresponding Relationship
T
Three Phase 380
MD320N T 0.7 G B
Null None
Brake Unit
B Including Brake Unit
G Gerneral Type
Model
P Fan Pump Type
Fig.2-1 Designation Rules
Fig.2-2 Nameplate
Caution: The MD320N series is an upgrade of the MD320 series in terms of external
appearance and structural design. Except for special notes on the MD320N, all the following
information is appropriate for the MD320N series of products.
MODEL：MD 320NT0.7G
POWER：0 .75kW
OUTPUT：3 PH AC0V 2.3A 0Hz～300Hz
Shenzhen Inovance Technology Co.,Ltd.
S/N: Barcode
INPUT：3 PH AC380V 3.4A 50Hz/60Hz

MD320/MD320N User Manual Product Information
19
2.3 MD320 Inverter Series
Table 2-1 MD320 Inverter Model and Technical Data
Inverter model
Power
capacity
(kVA)
Input
current
(A)
Output
current
(A)
Adaptable Motor
(kW)
Single-phase power supply: 200…240V，50/60Hz
MD320NS0.4 1.0 5.4 2.3 0.4 0.5
MD320NS0.7 1.5 8.2 4.0 0.75 1
MD320NS1.5 3.0 14.0 7.0 1.5 2
MD320NS2.2 4.0 23.0 9.6 2.2 3
Three-phase power supply: 380…480V，50/60Hz
MD320NT0.7 1.5 3.4 2.1 0.75 1
MD320NT1.5 3.0 5.0 3.8 1.5 2
MD320NT2.2 4.0 5.8 5.1 2.2 3
MD320NT3.7 5.9 10.5 9.0 3.7 5
MD320NT5.5 8.9 14.6 13.0 5.5 7.5
MD320NT7.5 11.0 20.5 17.0 7.5 10
MD320NT11 17.0 26.0 25.0 11.0 15
MD320NT15 21.0 35.0 32.0 15.0 20
MD320NT18.5 24.0 38.5 37.0 18.5 25
MD320NT22 30.0 46.5 45.0 22 30
MD320NT30 40.0 62.0 60.0 30 40
MD320NT37 57.0 76.0 75.0 37 50
MD320NT45 69.0 92.0 91.0 45 60
MD320NT55 85.0 113.0 112.0 55 70
MD320NT75 114.0 157.0 150.0 75 100
MD320NT90 134.0 180.0 176.0 90 125
MD320NT110 160.0 214.0 210.0 110 150
MD320NT132 192.0 256.0 253.0 132 200