Inovance MD500 Series User manual

User Guide
MD500 AC Drive
A03
Suzhou lnovance Technology Co., Ltd.
Address: No.16, Youxiang Road, Yuexi Town,
Wuzhong District, Suzhou 215104, P.R.China
http: //www.inovance.cn
MD500 AC Drive High Performance Open and Closed Loop User Guide
Data Code: 19010374
High Performance
Open and Closed Loop

Preface
- 1-
Preface
Thank you for purchasing the MD500 Series AC Drive developed by Inovance Technology!
It is a general-purpose and high-performance current vector AC drive technically upgraded from the MD380 se-
ries. It is mainly used for controlling and adjusting the speed and torque of three-phase AC asynchronous mo-
tor. Using high-performance vector control technology, the MD500 Series AC drive features high torque output
at a low speed, excellent dynamic characteristics and superior overload capability. It provides user-program-
mable features and background software monitoring and communication bus functions and supports multiple
encoder types, delivering rich and powerful combined functions and stable performance. It can be used to drive
textile, papermaking, drawing, machine tools, packaging, food, fans, water pump and other automated produc-
tion equipment.
Product appearance
§ First Use
Read this manual carefully if you use the AC drive for the rst time. For any doubt on its function or perfor-
mance, contact our technicians for help.
§ Standards Compliance
Certication marks on the product template indicate compliance with the corresponding certicates and stan-
dards.
Name Mark Directive Name Standard
CE certication
EMC directives 2014/30/EU EN 61800-3
LVD directives 2014/35/EU EN 61800-5-1
RoHS directives 2011/65/EU EN 50581
TUV certication - EN 61800-5-1
UL certication -UL61800-5-1
C22.2 No.14-13
Note
● The IEC/EN 61800-3 standard is complied with only when the AC drive is correctly installed and
used. For details, refer to "2 System Connection" and common EMC problem rectication.

Revision History
- 2-
Revision History
Date Version Change Description
Nov 2015 V0.0 ● Related rmware version: F7-10 = U76.56 and F7-11 = U77.56.
Apr 2016 A01 ● Related rmware version: F7-10 = U76.56 and F7-11 = U77.56.
Nov 2016 A02 ● Modied Approvals, designation rule and nameplate.
Nov 2017A03 ● Add the 0.4 to 15 kW models
● Delete the MDKE7 keyboard and add the MDKE9 keyboard
§ Manual and Acquisition
This Manual is delivered with the product. If you want to purchase another copy, contact your product
distributor.
For more guidance details, MD500 Series General-Purpose AC Drive User Manual is available.
Manual code: 19010374. Visit the ofcial website (http://www.inovance.com) of Inovance Technology to
download the PDF version.

Safety Information
- 3-
Safety Information
§ Safety Precautions
Read and follow the safety precautions when installing, operating and maintaining the product.
To ensure your safety and prevent damage to equipment, follow the marks on the product and safety precau-
tions in this manual when installing, operating and maintaining the product.
1. "CAUTION", "WARNING", and "DANGER" items in the manual do not indicate all safety precautions that
need to be followed; instead, they just supplement the safety precautions.
2. Use this product in environment meeting the design and specication requirements; otherwise, a fault may
occur. Noncompliance-caused malfunction or damage to parts are not covered in product quality warranty.
3. Inovance is not legally responsible for any personal safety accident or property losses caused by improper
operation of this product.
§ Safety Grade and Denition
The
Danger
"DANGER" indicates the improper operation, which, if not avoided, causes death or seri-
ous injury.
The
Warning
"WARNING" indicates the improper operation, which, if not avoided, may cause death or
serious injury.
The
Caution
"CAUTION" indicates the improper operation, which, if not avoided, may cause minor
injury or equipment damage.
§ Safety Information
Unpacking and Checking
Caution
◆Before unpacking, check whether the outer package is intact, damaged, wet, damped, or deformed.
◆Open the package in sequence. Violent beating is prohibited!
◆During unpacking, check whether the product and its accessories have any damage, corrosion or bump
on the surface.
◆Check the quantity of the product and its accessories and data completeness according to the packing
list.
Warning
◆Do not install the product and its accessories when you nd that the product and its accessories have
any damage or corrosion or they have been used.
◆Do not install the product when there is water inside the product or any of its parts is missing or dam-
aged.
◆Do not install the product when the product name is inconsistent with that in the packing list.

Safety Information
- 4-
During Storage and Transportation
Caution
◆Store and transport the product according to its storage and transportation conditions. The storage tem-
perature and humidity shall meet relevant requirements.
◆Do not store or transport the product in places with direct sunlight, strong electric eld, strong magnetic
eld or strong vibration or places that are wet by rain or splashing water.
◆Do not store the product for over three months. Take stricter prevention measures and perform neces-
sary inspection when the storage time is too long.
◆Well pack the product before transportation. The product must be placed in a sealed box for long-dis-
tance transportation.
◆Do not transport the product together with any equipment or articles that may affect or impair the prod-
uct.
Warning
◆Be sure to use professional loading and unloading equipment to move large or heavy equipment and
products!
◆When moving the product by hand, grab the product case tightly to avoid dropping the product parts,
causing injury!
◆Be sure to move the product lightly, pay attention to your step to prevent trip or fall; otherwise, there is
the risk of injury or damage to the product!
◆When the equipment is lifted by a lifting gear, do not stand or stay in the area below the lifting area.
During Installation
Warning
◆Before installation, carefully read the product manual and safety precautions!
◆Do not modify the product!
◆Do not unscrew the xing bolts and bolts with red mark of the product parts and components!
◆Do not install this product in a place with strong electric eld or strong electromagnetic interference!
◆When the product is installed in a cabinet or terminal equipment, the cabinet or terminal equipment shall
be provided with the corresponding protective devices such as reproof enclosure, electrical enclosure
and mechanical enclosure. The protection grade shall comply with relevant IEC standards and local laws
and regulations.
Danger
◆Non-professionals are strictly prohibited from product installation, wiring, maintenance, inspection or
parts replacement!
◆These operations can only be done by professionals trained on electrical equipment and having knowl-
edge of electrical equipment.
◆Installers must be familiar with product installation requirements and related technical data.
◆When you need to install equipment, such as transformers, having strong electromagnetic interference,
install the shield protection device to prevent the product from malfunction!

Safety Information
- 5-
During Wiring
Danger
◆Non-professionals are strictly prohibited from equipment installation, wiring, maintenance, inspection or
parts replacement!
◆Do not perform wiring when the power is turned on. Failure to comply may result in electric shock.
◆Before wiring, cut off the power of all equipment. There is residual voltage in internal capacitor of the
equipment after the power is cut off. Wait for at least 10 minutes before wiring and other operations.
◆Be sure the equipment and product are properly grounded. Failure to comply may result in electric
shock.
◆Follow the ESD precautions and wear EDS wrist strap to avoid damage to the equipment or circuit inside
the product.
Warning
◆It is prohibited to connect the input power to the output terminal of the equipment or product; otherwise,
the equipment may be damaged or re may occur.
◆When connecting a driving equipment to the motor, be sure that the phase sequence of the driver and
the motor terminal are consistent, so as to avoid reverse rotation of the motor.
◆The cables used for wiring must meet relevant diameter and shielding requirements, and the shielding
layer of the shielding cables must be reliably grounded at single terminal!
◆After wiring is nished, be sure there is no screw or bar cables inside the equipment and product.
During Power-on
Danger
◆Before power-on, be sure the equipment and product are installed properly, the wiring is rm and the
motor unit is allowed to restart.
◆Before power-on, be sure the power supply meets the equipment requirements to avoid damage to the
equipment or causing re!
◆During power-on, mechanical devices of the equipment or product may suddenly move. Stay away from
the mechanical devices.
◆After power-on, do not open the equipment cabinet door or product protection cover; otherwise, there is
the danger of electric shock!
◆It is prohibited to touch any terminal of the equipment when power is on; otherwise, there is the danger
of electric shock!
◆It is prohibited to dismantle any device or parts of the equipment and product when the power is on; oth-
erwise, there is the danger of electric shock!

Safety Information
- 6-
During Running
Danger
◆It is prohibited to touch any terminal of the equipment when it is running; otherwise, there is the danger
of electric shock!
◆It is prohibited to dismantle any device or parts of the equipment and product when the equipment is
running; otherwise, there is the danger of electric shock!
◆It is prohibited to touch the equipment closure, fan or resistor to check the temperature; otherwise, there
is the danger of burn!
◆Non-professional technicians are prohibited to detect the signal when the equipment is running; other-
wise, there is the danger of personal injury or damage to the equipment!
Warning
◆When the equipment is running, do not drop other articles or metals into the equipment; otherwise, the
equipment may be damaged!
◆Do not start or stop the equipment by turning on or off the connector; otherwise, the equipment may be
damaged!
During Maintenance
Danger
◆Non-professionals are strictly prohibited from equipment installation, wiring, maintenance, inspection or
parts replacement!
◆It is prohibited to maintain the equipment when power is on; otherwise, there is the danger of electric
shock!
◆After the equipment power is cut off, wait for at least 10 minutes before maintaining the equipment or
performing other operations.
Warning
◆Follow the equipment maintenance and repair requirements for routine and regular inspection and main-
tenance of the product and equipment, and prepare the maintenance records.
During Repair
Danger
◆Non-professionals are strictly prohibited from equipment installation, wiring, maintenance, inspection or
parts replacement!
◆It is prohibited to repair the equipment when power is on; otherwise, there is the danger of electric
shock!
◆After the equipment power is cut off, wait for at least 10 minutes before inspecting or repairing the equip-
ment or performing other operations.

Safety Information
- 7-
Warning
◆Repair the equipment according to the product warranty agreement.
◆When the equipment has fault or is damaged, troubleshoot and repair the equipment and product follow
guidance by professionals, and prepare the repair records.
◆Replace the product wearing parts under guidance.
◆Do not continue to use damaged machines; otherwise, greater damager may be caused.
◆After replacing the equipment, re-check the equipment wiring and parameter settings again.
During Scrapping
Warning
◆Scrap the equipment and product according to national regulations and standards to avoid property loss
or personal injury!
◆Recycle scrapped equipment and product according to industrial waster processing standards to avoid
pollution to the environment.
§ Safety Marks
For safe operation and maintenance of the equipment, be sure to observe the safety marks affixed to the
equipment and product. Do not damage, destroy or peel off the safety marks. Safety marks are described as
follows:
Safety Marks Description
◆Read the user manual before installing and running the equipment; oth-
erwise, there is the danger of electric shock!
◆Do not dismantle the cover within 10 minutes after the power is turned
on or cut off!
◆After cutting off the power at the input and output terminals, wait for 10
minutes until the power indicator turns off before maintaining, inspecting
or wiring the equipment.

Contents
- 8-
Contents
Preface ........................................................................................................................ 1
Revision History........................................................................................................... 2
Safety Information........................................................................................................ 3
1 Product Information...............................................................................................11
1.1 Nameplate and Model ....................................................................................................... 11
1.2 Description of Parts........................................................................................................... 12
2 System Connection................................................................................................17
2.1 MD500 System Connection Diagram ................................................................................ 18
2.2 MD500 Series System Composition .................................................................................. 19
3 Installation and Wiring............................................................................................20
3.1 Installation......................................................................................................................... 20
3.1.1 Installation environment.................................................................................................................. 20
3.1.2 Mounting Clearance and Orientation .............................................................................................. 21
3.1.3 Installation of MD500T0.4GB to MD500T160G.............................................................................. 23
3.1.4 Mounting in Cabinet........................................................................................................................ 27
3.1.5 Remove and Ret the Cover........................................................................................................... 36
3.2 Wiring................................................................................................................................ 39
3.2.1 Standard Wiring Diagram ............................................................................................................... 39
3.2.2 Functions of Main Circuit Terminals and Precautions .................................................................... 40
3.2.3 Control Board ................................................................................................................................. 45
3.2.4 Control Circuit Terminal Arrangement ............................................................................................. 46
4 Panel Operation....................................................................................................48
4.1 Introduction ....................................................................................................................... 48
4.2 LED Operating Panel ........................................................................................................ 48
4.2.1 Indicators on LED Operating Panel ................................................................................................ 49
4.2.2 LED Display.................................................................................................................................... 50
4.2.3 Keys on LED Operating Panel........................................................................................................ 50
4.2.4 View and Modify Function Parameters ........................................................................................... 51
4.2.5 Overall Arrangement of Function Parameters................................................................................. 53
4.2.6 View Function Parameters.............................................................................................................. 54
4.2.7 MF.K Key Function ......................................................................................................................... 58
4.3 External LCD Operating Panel .......................................................................................... 59
5 Basic Operations and Trial Run ..............................................................................60
5.1 Quick Commissioning Guide ............................................................................................. 60
5.2 Commissioning Flowchart ................................................................................................. 61
5.3 Checklist Before Power-on................................................................................................ 64
5.4 Display After Power-on...................................................................................................... 64
5.5 Parameter Initialization...................................................................................................... 64
5.6 Motor Control .................................................................................................................... 65
5.7 Start/Stop running command............................................................................................. 65

Contents
- 9-
5.7.1 Start/Stop Operating Panel............................................................................................................. 65
5.7.2 Start/Stop DI................................................................................................................................... 65
5.7.3 Start/Stop via Communication ........................................................................................................ 68
5.8 Start the AC Drive ............................................................................................................. 68
5.8.1 Start Mode...................................................................................................................................... 68
5.8.2 Start Frequency .............................................................................................................................. 69
5.9 View Running Status ......................................................................................................... 70
5.9.1 Digital Output (DO) ......................................................................................................................... 70
5.9.2 Analog Output (AO) ........................................................................................................................ 70
5.10 Auto-tuning ...................................................................................................................... 71
6 Troubleshooting and Solutions..............................................................................73
6.1 Safety Information ............................................................................................................ 73
6.2 Troubleshooting During Trial Run ..................................................................................... 74
6.3 Fault Display .................................................................................................................... 75
6.4 Resetting Fault ................................................................................................................. 76
6.5 Faults and Diagnostics ..................................................................................................... 77
6.6 Symptoms and Diagnostics .............................................................................................. 82
7 Routine Inspection and Maintenance ......................................................................84
7.1 Routine Inspection............................................................................................................ 84
7.1.1 Routine Inspection Items ................................................................................................................ 85
7.2 Periodic Inspection ........................................................................................................... 85
7.2.1 Periodical Inspection Items............................................................................................................. 85
7.2.2 Insulation Test on Main Circuit........................................................................................................ 86
7.3 Replacement of Wear Parts .............................................................................................. 86
7.3.1 Lifetime of Wear Parts .................................................................................................................... 86
7.3.2 Number of Fans on the Drive.......................................................................................................... 87
7.3.3 Replacement of Fans...................................................................................................................... 88
7.3.4 DC Bus Electrolytic Capacitors....................................................................................................... 92
7.4 Storage............................................................................................................................. 92
7.5 Warranty .......................................................................................................................... 92
8 Specications and Model Selection........................................................................93
8.1 Technical Specications of MD500 Series AC Drive.......................................................... 93
8.2 Appearance and Dimensions of MD500 Series AC Drive .................................................. 98
8.2.1 Overall Dimensions of MD500T0.4GB to MD500T160G................................................................. 98
8.2.2 Overall Dimensions of MD500T0.4GB to MD500T160G with Through Hole Mounting Bracket .... 100
8.2.3 Overall Dimensions of MD500T200G to MD500T450G ................................................................ 109
8.2.4 Overall Dimensions of MD500T200G-L to MD500T450G-L ...........................................................110
8.2.5 Dimensions of Mounting Bracket ...................................................................................................111
8.3 Options.............................................................................................................................112
8.4 Cables, Breakers, and Contactors....................................................................................114
8.5 Braking Unit......................................................................................................................115
8.5.1 Selection of Resistance of Braking Resistor ..................................................................................115
8.5.2 Selection of Power of Braking Resistor..........................................................................................115
8.5.3 Braking Units .................................................................................................................................116

Contents
- 10 -
8.5.4 Appearance and Mounting Dimensions of Braking Units ...............................................................118
8.5.5 Appearance and Mounting Dimensions of the AFE Unit ................................................................119
8.6 AC Output Reactor .......................................................................................................... 121
8.7 Applicable Motor.............................................................................................................. 122
8.8 Mounting Dimensions of External Operating Panels ....................................................... 123
Appendix A Expansion Optional Cards...................................................................... 125
A.1 Installation and Function Guidelines .............................................................................. 125
A.1.1 Installation................................................................................................................................... 125
A.1.2 Functions .................................................................................................................................... 126
A.2 Layout and Function of Terminals of Extension RS485 Card (MD38TX1) ....................... 127
A.3 Layout and Function of Terminals of MD38IO1 ............................................................... 128
A.4 Layout and Function of Terminals of MD38IO2 ............................................................... 130
A.5 Use of Extension Encoder Cards .................................................................................... 131
A.5.1 Specications of Extension Encoder Cards.................................................................................. 131
A.5.2 Multifunctional PG Card (MD38PGMD)........................................................................................ 134
A.5.3 Differential Input PG Card (MD38PG1) ........................................................................................ 136
A.5.4 Resolver PG Card (MD38PG4) .................................................................................................... 137
A.5.5 Extension Open-collector PG Card (MD38PG5 and MD38PG5D)................................................ 138
A.5.6 Extension Differential PG Card with Frequency Dividing (MD38PG6 and MD38PG6D) ............... 140
A.5.7 Shield Grounding of PG Card....................................................................................................... 141
A.5.8 EMC Guidance............................................................................................................................. 141
Appendix B Denition of Communication Data Address and Modbus
Communication Protocol........................................................................................... 142
B.1 Denition of Communication Data Address .................................................................... 142
B.1.1 Parameter Data........................................................................................................................... 142
B.1.2 Non-parameter Data.................................................................................................................... 143
B.2 Modbus Communication Protocol .................................................................................. 145
B.2.1 Application................................................................................................................................... 145
B.2.2 Bus Structure .............................................................................................................................. 145
B.3 Data Format................................................................................................................... 146
B.4 Rules for Parameter Address Marking ........................................................................... 148
B.5 Group FD Communication Parameter Description ......................................................... 151
Appendix C Parameter Table .................................................................................. 152
C.1 Standard Parameter Table ............................................................................................. 152
C.2 Monitoring Parameters .................................................................................................. 181

1 Product Information
- 11 -
1
1 Product Information
Safety Information
Caution
◆Do not lift/carry the drive by carrying the front cover. Failure to comply may result in
personal injury.
◆Follow proper electrostatic discharge (ESD) procedures when operating the drive.
Failure to comply will risk damaging the internal circuit of the drive.
1.1 Nameplate and Model
MODEL: MD500T55GB
INPUT: 3PH AC 380-480V 106.0A 50Hz/60Hz
OUTPUT: 3PH AC 0-480V 112.0A 0-500Hz 55kW
Suzhou Inovance Technology Co., Ltd.
S/N: Serial Number
AC drive mode
Rated input
Rated output
Serial No.
Nameplate
AC drive model
Series Applicable
Motor (kW)
MD500 55
TB
Mark Type of
Applicable Motor Blank None
Mark Braking Unit
.
Mark
TThree-phase
380V~480V
Mark Voltage Class
BInbuilt
Braking Unit
……
22 22
……
450 450
……
GGeneral Type
G
-INT International
Mark Version
-(a)Other variants
-T
Inbuilt output DC reactor,
applicable to
MD500T18.5G~MD500T22G
Blank None
Mark Output Reactor
-L
Inbuilt output AC reactor,
applicable to MD500T200G-
L~MD500T450G-L
Note (a): The model number may
include a suffix "XXXXXXXXXX",
Where "XXXXXXXXXX" can be blank
or combination of any alphanumeric
And/or symbols that represents
customer identity.
-INT
MD500
Figure 1-1 Product naming and nameplate

1 Product Information
- 12 -
1
1.2 Description of Parts
The drive can have either a plastic housing or a sheet metal housing, depending on the voltage and power rat-
ing, as shown in the following gures:
Description
i
10min
CAUTION! Read the user guide of the AC drive
carefully before installation or operation.
Warning label
Live indicator
Do not remove/install the drive
when this indicator is lighting
Housing
Cable support bracket
Main circuit terminals
See section 3.2.2
EMC and VDR screw
Refer to Power Grid System in
Section 3.2.2 and requirement
on current leakage in A.6 in
MD500 Series General-Purpose
AC Drive User Manual
Front cover
For removal of the front
cover, see section 3.1.5 Logo
Control circuit terminals
See section 3.2.4
Ground bar
Ground the PG card and
control board
Fixing pin of extension card
See Appendix A Optional Cards
Fixing pin of extension
encoder card
See Appendix A Optional Cards
Operating panel, See section 4.2
Cabling tray and fixing pin of
ground cable of control board
This ground cable can only be
connected to the ground bar after
the system is grounded reliably.
Barcode (0.4~11kW)
View the serial number and
model of the drive here.
Fan cover
Warning label
Nameplate
See section 1.1
Cooling fan
For replacement,
see section 7.3
Interface of external
operating panel
See section 4.3
Barcode (15kW)
View the serial number and
model of the drive here.
Grounding terminal
See section 3.2.2
DANGER! Do not remove the front cover while the
power is on or within10 minutes after the power is
turned off.
Figure 1-2 Schematic diagram of product parts (three-phase, 380V - 480V, MD500T0.4GB to MD500T15GB)

1 Product Information
- 13 -
1
Live indicator
Do not remove/install the drive
when this indicator is lighting
Cooling fan
For replacement,
see section 7.3
Housing
Cable support bracket
Main circuit terminals and
grounding terminals
See section 3.2.2
EMC and VDR screw
Refer to Power Grid System in
section 3.2.2 and requirement on
current leakage in A.6 in MD500
Series General-Purpose AC
Drive User Manual
Front cover
For removal of the front
cover, see section 3.1.5 Logo
Control circuit terminals
See section 3.2.4
Ground bar
Ground the PG card and control
board
Fixing pin of extension card
See Appendix A:Optional Cards
Fix pin of extension encoder
card
See Appendix A Optional Cards
Operating panel, See section 4.2
Cabling tray and fixing pin of
ground cable of control board
Note:This ground cable can only be
connected to the ground bar after
the system is grounded reliably.
Barcode
View the serial number and
model of the drive here.
Fan cover
Warning label
Nameplate
See section 1.1
Description
i
10min
CAUTION! Read the user guide of the AC drive
carefully before installation or operation.
Warning label
DANGER! Do not remove the front cover while the
power is on or within10 minutes after the power is
turned off.
Interface of external
operating panel
See section 4.3
Figure 1-3 Schematic diagram of product parts (three-phase, 380V - 480V, MD500T18.5G(B) to MD500T-
37G(B))

1 Product Information
- 14 -
1
Front cover
For removal of the front
cover, see section 3.1.5 Logo
Cooling fan
For replacement,
see section 7.3
Nameplate
See section 1.1
Grounding
terminal
See section 3.2.2
Main circuit terminals
See section 3.2.2
Cable gland hole
Cable clamp
Fix signal cables
Housing
Fixing pin of extension card
See Appendix A Optional Cards
Ground bar
Ground the PG card and
control board
Cabling tray and fixing pin of
ground cable of control board
Note:This ground cable can only be
connected to the ground bar after
the system is grounded reliably.
Fix pin of extension
encoder card
See Appendix A Optional Cards
Barcode
View the serial
number and model
of the drive here.
Control circuit
terminals
See section 3.2.4
Operating panel
See section 4.2
Warning label
Description
i
10min
CAUTION! Read the user guide of the AC drive
carefully before installation or operation.
Warning label
Interface of external
operating panel
See section 4.3
EMC and VDR screw
Refer to Power Grid System in
section 3.2.2 and requirement
on current leakage in A.6 in
MD500 Series General-
Purpose AC Drive User
Manual
DANGER! Do not remove the front cover while the
power is on or within10 minutes after the power is
turned off.
Figure 1-4 Schematic diagram of product parts (three-phase, 380V - 480V, MD500T45G(B) to MD500T160G)

1 Product Information
- 15 -
1
LOGO
Warning label
DC bus terminals
Cable clamp
Castor
Housing
Bottom hoist hole
Main circuit input
terminals
See section 3.2.2
Top hoist rings
Protective cover of
DC bus terminals
Nameplate
Handle
Label of main
circuit wiring
Description
i
10min
CAUTION! Read the user guide of the AC drive
carefully before installation or operation.
Warning label
Fan box
For replacement of fan,
see section 7.3
Control circuit
terminals
See section 3.2.4
Grounding terminal
section 3.2.2
Live indicator
Do not remove/install the drive
when this indicator is lighting
EMC and VDR screw
Refer to Power Grid
System in section 3.2.2 and
requirement on current
leakage in A.6 in MD500
Series General-Purpose
AC Drive User Manual
Ground bar
Ground the PG card and
control board
Fixing pin of extension
card
See Appendix A Optional
Cards
Operating panel
See section 4.2
Cabling tray and fixing
pin of ground cable of
control board
This ground cable can only
be connected to the ground
bar after the system is
grounded reliably. Interface of external
operating panel
See section 4.3
Barcode
View the serial
number and model of
the drive here.
Front cover
For replacement,
see 3.1.5
DANGER! Do not remove the front cover while the
power is on or within10 minutes after the power is
turned off.
Main circuit output
terminals
See section 3.2.2
Figure 1-5 Schematic diagram of product parts (three-phase, 380V - 480V, MD500T200G to MD500T450G)

1 Product Information
- 16 -
1
Top hoist rings
Protective cover of DC bus terminals
DC bus terminals
Fixing pin of extension
encoder card
Main circuit input
terminals
Bottom hoist hole
Housing
Warning
label
LOGO
Castor
Fan box
For replacement of fan,
see section 7.3
Cable clamp
Control circuit
terminals
See section 3.2.4
Main circuit output
terminal
See section 3.2.2
Grounding terminal
See section 3.2.2
Output AC Reactor
Front lower
cover
Live indicator
Do not remove/install the drive
when this indicator is lighting
EMC and VDR screw
Refer to Power Grid
System in section 3.2.2
Ground bar
Ground the PG card and
control board
Fixing pin of extension card
See Appendix A Optional Cards
Operating panel
See section 4.2
Cabling tray and fixing
pin of ground cable of
control board
This ground cable can only
be connected to the ground
bar after the system is
grounded reliably.
Interface of external
operating panel
See section 4.3
Barcode
View the serial number and
model of the drive here.
Nameplate
Front upper
cover
For replacement,
see 3.1.5
Description
i
10min
DANGER! Do not remove the front cover while the
power is on or within10 minutes after the power is
turned off.
CAUTION! Read the user guide of the AC drive carefully
before installation or operation.
Warning label
Left side board of base
Label of main
circuit wiring
Figure 1-6 Schematic diagram of product parts (three-phase, 380V - 480V, MD500T200G-L to MD500T450G-L)

2 System Connection
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2
2 System Connection
Safety Information
Danger
◆Do not perform wiring when the power is turned on. Failure to comply may result
in electric shock.
◆Always keep breakers in OFF state.
Warning
◆When installing the drive inside an enclosed cabinet, use cooling fan or air condi-
tioner to keep temperature below 50°C.Failure to comply may result in overheat-
ing or even a re.
Caution
◆Cover the top of the drive with a temporary cloth or paper during installation so
as to prevent foreign matter such as metal shavings, oil and water from falling
into the drive. If any foreign matter falls into the drive, the drive may have a fault.
After the installation is completed, remove the temporary cloth or paper. If leaving
the cloth or paper on the drive, the drive may have abnormal heating due to poor
ventilation.
◆Follow proper electrostatic discharge (ESD) procedures when operating the AC
drive. Failure to comply will damage the drive because of static electricity.
◆Operating the motor at low speed lowers the cooling effect and increases the
motor temperature, which may result in damage to the motor. The motor heat
emission conditions shall be improved.
◆The motor speed range is subject to the lubrication method and manufacturer.
◆If the required motor speed range differs from that of the motor manufacturer,
contact them for advice.
◆If the torque characteristic is different with drive operation compared with opera-
tion from a commercial power supply, check the load torque characteristic of the
connected machine.
◆Pay attention to the load torque characteristic when selecting the drive capacity.
In addition, when there is a long distance between the motor and drive, use a ca-
ble with a large cross sectional area to connect between the motor and the drive
to prevent motor torque reduction.
◆If the rated current of the pole-changing motor is different from that of a standard
motor, check the maximum current of the motor and select an appropriate AC
drive. Be sure to switch the pole after the motor stops.
◆Do not lift the AC drive while the front cover is removed. Failure to comply may
result in damage to PCB and terminal block.

2 System Connection
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2
2.1 MD500 System Connection Diagram
When using the drive to drive asynchronous motor, a variety of electrical devices must be installed on both in-
put and output sides to ensure system safety and stability. How to congure the AC drive (three-phase 380 V to
480 V, 0.4 kW and above) to operate with the peripheral devices is shown as below:
Ground
Electromagnetic
contactor
Breaker
Three-phase AC
power supply
Input reactor
Braking
resistor
EMC filter
R S T
P(+)
W
VU
BR +-
Ground
+
BR -PE
Breaking unit
MDBUN
To prevent electric shock,
AC drive and motor must
be well grounded
Braking
resistor
MD500 External
operating panel
Applicable
motor
Output reactor
MF.K
RUN STOP
RES
QUICK
PRG ENTER
RUN LOCAL/REMOT FED/REV TUNE/TC
RPM %
A VHz
Fuse
MD32NKE1
MDKE9
MDKE9
Figure 2-1 MD500 Series system composition
Note
● The above gure is just a schematic system connection diagram of MD500 Series AC drive. For
peripherals and options, see "Chapter 8 Specications and Model Selection".

2 System Connection
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2
2.2 MD500 Series System Composition
Table 2-1 Description of peripheral electrical devices in MD500 Series AC drive
Device Mounting Location Function Description
Breaker Between power and AC
drive input side
MCCB: Cut off power supply when overcurrent occurs on downstream devices
Leakage breaker: Provide protection against potential leakage current during
drive running to prevent electric shock and even a re.
Fuse Between power and AC
drive input side Provide protection in case of short circuit.
Contactor Between breaker and AC
drive input side
Switch ON/OFF the AC drive. Do not start/stop the AC drive frequently by
switching contactor ON/OFF (time interval is at least one hour) nor use it to
directly start the AC drive.
AC
reactor AC drive input side
Improve power factor of power input side.
Eliminate higher harmonics of the input side effectively and prevent other
devices from being damaged due to distortion of voltage waveform.
Eliminate input current unbalance due to inter-phase unbalance.
EMC lter AC drive input side
Reduce external conduction and radiation interference of the AC drive.
Decrease conduction interference owing from power supply to the AC drive
and improve the anti-interference capacity of the AC drive.
DC
reactor
Between EMC lter and
braking resistor; It is
standard conguration for
the drive of 30 kW and
above and optional for the
drive of 18.5 to 22 kW.
Improve power factor of power input side.
Improve efciency and thermal stability of the AC drive.
Eliminate impact of higher harmonics of the AC drive input side and reduce
external conduction and radiation interference.
Braking
resistor
GB-type model of 75 kW
and below.
Use braking resistor for the GB-type model of 75 kW and below.
Dissipate regenerative energy during motor deceleration.
Braking
unit
Full series except the GB-
type model
Use braking unit MDBUN and MDBU of Inovance and recommended braking
resistor for full series except the GB-type model.
Dissipate regenerative energy during motor deceleration.
Output
reactor
Between AC drive output
side and the motor, close
to the AC drive
Output side of the AC drive generally has much higher harmonics. When the
motor is far from the AC drive, there is much distributed capacitance in the
circuit and certain harmonics may cause resonance in the circuit, which will:
(a) Degrade motor insulation performance and damage the motor in long run.
(b) Generate large leakage current and cause frequent AC drive protection
trips.
If distance between the AC drive and the motor is greater than 100 m, install
an AC output reactor.
dv/dt
reactor
AC drive output side, close
to the AC drive Optional. Protect motor insulation and reduce bearing current.
Output
magnetic
ring
AC drive output side, close
to the AC drive Reduce bearing current.
Motor AC drive output side Select an appropriate motor.
Note
● Do not install a capacitor or surge suppressor on output side of AC drive. Otherwise, it may damage
the AC drive.
● Inputs/Outputs (main circuit) of the AC drive contain harmonics, which may interfere with the
communication device connected to the AC drive. Therefore, install an anti-interference lter to
minimize interference.