INVT Goodrive270 Series User manual

Goodrive270 series VFD for fan and pump Change history
No. Change description Version Release
date
1 First release. V1.0 May 2021

Goodrive270 series VFD for fan and pump Preface
i
Preface
Thank you for choosing Goodrive270 series variable-frequency drive (VFD).
If not otherwise specified, the VFD in the manual always indicates Goodrive270 series VFD, which is
an optimized VFD special for fan and pump. Simple and easy to use, the VFD can drive the fans and
pumps in wastewater treatment, HVAC, chemical, metallurgical, electric power and other industries.
Using advanced vector control technologies, the VFD can drive both synchronous motors (SMs) and
asynchronous motors (AMs) in various complex work conditions. In addition, the VFD has been
embedded with various fan and pump application macros, such as PID, multi-pump control, constant
pressure water supply, effectively relieving engineers from the difficulty in debugging. The VFD uses
an independent air duct design and thickened circuit board coating, helping to adapt to hostile
environments, ensuring long and reliable run, and reducing maintenance cost. The VFD also
supports communication bus add-on, such as CAN bus and PROFINET bus, providing better
industrial control system compatibility. Furthermore, the VFD supports wireless communication,
allowing users to upload VFD process data to the cloud through GPRS, WiFi, Bluetooth, and other
means so as to achieve remote monitoring and analysis anytime anywhere. The VFD power density
is improved, facilitating the in-cabinet design and reducing customer system cost. The VFD circuit
optimization design has excellent electromagnetic compatibility characteristics to ensure stable run in
complex electromagnetic environments.
This manual instructs you how to install, wire, set parameters for, diagnose and remove faults for, and
maintain the VFD, and also lists related precautions. Before installing the VFD, read through this
manual carefully to ensure the proper installation and running with the excellent performance and
powerful functions into full play.
The manual is subject to change without prior notice.

Goodrive270 series VFD for fan and pump Contents
ii
Contents
Preface ............................................................................................................................................ i
Contents.........................................................................................................................................ii
1 Safety precautions......................................................................................................................1
1.1 What this chapter contains ..................................................................................................1
1.2 Safety definition ..................................................................................................................1
1.3 Warning ..............................................................................................................................1
1.4 Safety guidelines.................................................................................................................2
1.4.1 Delivery and installation.............................................................................................2
1.4.2 Commissioning and running ......................................................................................3
1.4.3 Maintenance and component replacement ................................................................ 4
1.4.4 Disposal....................................................................................................................4
2 Quick startup...............................................................................................................................5
2.1 What this chapter contains ..................................................................................................5
2.2 Unpacking inspection ..........................................................................................................5
2.3 Checking before use ...........................................................................................................5
2.4 Environment checking ......................................................................................................... 5
2.5 Checking after installation ................................................................................................... 6
2.6 Basic commissioning...........................................................................................................6
3 Product overview ........................................................................................................................7
3.1 What this chapter contains ..................................................................................................7
3.2 Basic principles ...................................................................................................................7
3.3 Product specifications .........................................................................................................8
3.4 Product nameplate ............................................................................................................ 10
3.5 Model designation code .................................................................................................... 10
3.6 Product ratings.................................................................................................................. 11
3.7 Structure........................................................................................................................... 11
4 Installation guidelines .............................................................................................................. 13
4.1 What this chapter contains ................................................................................................ 13
4.2 Mechanical installation ...................................................................................................... 13
4.2.1 Installation environment...........................................................................................13
4.2.2 Installation direction................................................................................................. 14
4.2.3 Installation method .................................................................................................. 15
4.2.4 Single-unit installation ............................................................................................. 16
4.2.5 Multiple-VFD installation.......................................................................................... 16
4.2.6 Vertical installation .................................................................................................. 17
4.2.7 Tilted installation...................................................................................................... 18
4.2.8 In-cabinet installation............................................................................................... 18
4.3 Standard wiring of the main circuit.....................................................................................27

Goodrive270 series VFD for fan and pump Contents
iii
4.3.1 Wiring diagram of the main circuit............................................................................ 27
4.3.2 Terminal diagram of the main circuit ........................................................................ 28
4.3.3 Wiring procedure for main circuit terminals .............................................................. 32
4.4 Standard wiring of the control circuit..................................................................................33
4.4.1 Wiring diagram of basic control circuit...................................................................... 33
4.4.2 Input/output signal connection diagram.................................................................... 35
4.5 Wiring protection ............................................................................................................... 36
5 Basic operation guidelines....................................................................................................... 38
5.1 What this chapter contains ................................................................................................ 38
5.2 Keypad introduction .......................................................................................................... 38
5.3 Keypad display.................................................................................................................. 40
5.3.1 Displaying stopped-state parameters....................................................................... 40
5.3.2 Displaying running-state parameters ....................................................................... 41
5.3.3 Displaying fault alarms ............................................................................................41
5.3.4 Editing function codes ............................................................................................. 41
5.4 Operation procedure ......................................................................................................... 42
5.4.1 Modifying function codes .........................................................................................42
5.4.2 Setting a password for the VFD ............................................................................... 42
5.4.3 Viewing VFD status ................................................................................................. 43
5.5 Basic operation description ............................................................................................... 43
5.5.1 What this section describes ..................................................................................... 43
5.5.2 Common commissioning procedure......................................................................... 43
5.5.3 Vector control .......................................................................................................... 47
5.5.4 Space voltage vector control mode.......................................................................... 53
5.5.5 Torque control ......................................................................................................... 62
5.5.6 Motor parameters.................................................................................................... 66
5.5.7 Start/stop control ..................................................................................................... 72
5.5.8 Frequency setting.................................................................................................... 76
5.5.9 Analog input ............................................................................................................ 80
5.5.10 Analog output ........................................................................................................ 82
5.5.11 Digital input ........................................................................................................... 86
5.5.12 Digital output ......................................................................................................... 95
5.5.13 Simple PLC........................................................................................................... 99
5.5.14 Multi-step speed running ..................................................................................... 101
5.5.15 PID control .......................................................................................................... 103
5.5.16 Run at wobbling frequency .................................................................................. 109
5.5.17 HVAC function..................................................................................................... 110
5.5.18 Electric wiring and timing diagram of HVAC function ............................................ 115
5.5.19 Motor reducing .................................................................................................... 119
5.5.20 Fault handling ..................................................................................................... 120

Goodrive270 series VFD for fan and pump Contents
iv
6 Function parameter list........................................................................................................... 124
6.1 What this chapter contains .............................................................................................. 124
6.2 Function parameter list.................................................................................................... 124
P00 group²Basic functions ........................................................................................... 125
P01 group²Start and stop control ................................................................................. 129
P02 group²Parameters of motor 1................................................................................ 136
P03 group²Vector control of motor 1............................................................................. 139
P04 group²V/F control.................................................................................................. 145
P05 group²Input terminals............................................................................................ 153
P06 group²Output terminals......................................................................................... 161
P07 group²Human-machine interface........................................................................... 166
P08 group²Enhanced functions .................................................................................... 173
P09 group²PID control ................................................................................................. 181
P10 group²Simple PLC and multi-step speed control.................................................... 186
P11 group²Protection parameters................................................................................. 189
P12 group²Parameters of motor 2................................................................................ 200
P13 group²SM control.................................................................................................. 202
P14 group²Serial communication ................................................................................. 204
P15 group²Communication expansion card 1 functions ................................................ 206
P16 group²Communication expansion card 2 functions ................................................ 207
P17 group²Status viewing ............................................................................................ 207
P19 group²Expansion card status viewing.................................................................... 212
P23 group²Vector control of motor 2............................................................................. 213
P25 group²I/O card input functions............................................................................... 215
P26 group²I/O card output functions............................................................................. 217
P28 group²Master/slave control ................................................................................... 220
P89 group²HVAC status viewing .................................................................................. 221
P90 group²PID1 control ............................................................................................... 223
P91 group²PID2 control ............................................................................................... 227
P92 group²Real-time clock and timer (available at use of LCD keypad)........................ 230
P93 group²Fire control ................................................................................................. 231
P94 group²HVAC ......................................................................................................... 231
P95 group²Segmented water pressure......................................................................... 236
P96 group²HVAC protection......................................................................................... 236
7 Troubleshooting...................................................................................................................... 240
7.1 What this chapter contains .............................................................................................. 240
7.2 Indications of alarms and faults ....................................................................................... 240
7.3 Fault reset....................................................................................................................... 240
7.4 Fault history .................................................................................................................... 240
7.5 Faults and solutions ........................................................................................................ 240

Goodrive270 series VFD for fan and pump Contents
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7.5.1 Faults and solutions .............................................................................................. 240
7.5.2 Other status .......................................................................................................... 247
7.6 Analysis on common faults.............................................................................................. 248
7.6.1 Motor fails to work ................................................................................................. 248
7.6.2 Motor vibrates ....................................................................................................... 249
7.6.3 Overvoltage........................................................................................................... 250
7.6.4 Undervoltage......................................................................................................... 251
7.6.5 Motor overheating ................................................................................................. 252
7.6.6 VFD overheating ................................................................................................... 253
7.6.7 Motor stalls during ACC......................................................................................... 254
7.6.8 Overcurrent ........................................................................................................... 255
7.7 Countermeasures on common interference ..................................................................... 255
7.7.1 Interference on meter switches and sensors.......................................................... 255
7.7.2 Interference on RS485 communication .................................................................. 257
7.7.3 Failure to stop and indicator shimmering due to motor cable coupling.................... 258
7.7.4 Leakage current and interference on RCD............................................................. 258
7.7.5 Live device chassis ............................................................................................... 259
8 Maintenance............................................................................................................................ 260
8.1 What this chapter contains .............................................................................................. 260
8.2 Periodical inspection ....................................................................................................... 260
8.3 Cooling fan...................................................................................................................... 263
8.4 Capacitor ........................................................................................................................ 264
8.4.1 Capacitor reforming............................................................................................... 264
8.4.2 Electrolytic capacitor replacement ......................................................................... 265
8.5 Power cable .................................................................................................................... 265
9 Communication....................................................................................................................... 266
9.1 What this chapter contains .............................................................................................. 266
9.2 Modbus protocol introduction .......................................................................................... 266
9.3 Application of Modbus ..................................................................................................... 266
9.3.1 RS485................................................................................................................... 266
9.3.2 RTU mode............................................................................................................. 269
9.4 RTU command code and communication data................................................................. 272
9.4.1 Command code 03H, reading N words (continuously up to 16 words).................... 272
9.4.2 Command code 06H, writing a word ...................................................................... 274
9.4.3 Command code 08H, diagnosis............................................................................. 275
9.4.4 Command code 10H, continuous writing................................................................ 276
9.4.5 Data address definition.......................................................................................... 277
9.4.6 Fieldbus scale ....................................................................................................... 281
9.4.7 Error message response ....................................................................................... 282
9.4.8 Read/Write operation examples............................................................................. 283

Goodrive270 series VFD for fan and pump Contents
vi
9.5 Common communication faults ....................................................................................... 288
Appendix A Expansion card ...................................................................................................... 289
A.1 Model definition .............................................................................................................. 289
A.2 Dimensions and installation ............................................................................................ 291
A.3 Wiring............................................................................................................................. 293
A.4 IO expansion card (EC-IO501-00)................................................................................... 294
A.5 Communication cards ..................................................................................................... 296
A.5.1 PROFIBUS-DP communication card (EC-TX503).................................................. 296
A.5.2 Ethernet communication card (EC-TX504) ............................................................ 298
A.5.3 CANopen communication card (EC-TX511) and CAN master/slave control
communication card (EC-TX511).................................................................................................. 299
A.5.4 PROFINET communication card (EC-TX509)........................................................ 300
A.5.5 GPRS IoT card²EC-IC501-2................................................................................ 302
Appendix B Technical data........................................................................................................ 304
B.1 What this chapter contains.............................................................................................. 304
B.2 Derated application......................................................................................................... 304
B.2.1 Capacity ............................................................................................................... 304
B.2.2 Derating................................................................................................................ 304
B.3 Grid specifications .......................................................................................................... 305
B.4 Motor connection data .................................................................................................... 305
B.4.1 EMC compatibility and motor cable length............................................................. 305
B.5 Application standards...................................................................................................... 305
B.5.1 CE marking........................................................................................................... 306
B.5.2 EMC compliance declaration................................................................................. 306
B.6 EMC regulations ............................................................................................................. 306
B.6.1 VFD category of C2 .............................................................................................. 307
B.6.2 VFD category of C3 .............................................................................................. 307
Appendix C Dimension drawings.............................................................................................. 308
C.1 What this chapter contains.............................................................................................. 308
C.2 Keypad structure ............................................................................................................ 308
C.2.1 Structure diagram ................................................................................................. 308
C.2.2 Keypad mounting bracket ..................................................................................... 308
C.3 VFD structure ................................................................................................................. 309
C.4 Dimensions of AC 3PH 380V VFD models ...................................................................... 309
C.4.1 Wall-mounting dimensions .................................................................................... 309
C.4.2 Flange mounting dimensions ................................................................................ 312
C.4.3 Floor mounting dimensions ................................................................................... 313
Appendix D Optional peripheral accessories........................................................................... 315
D.1 What this chapter contains.............................................................................................. 315
D.2 Wiring of peripheral accessories ..................................................................................... 315

Goodrive270 series VFD for fan and pump Contents
vii
D.3 Power supply.................................................................................................................. 316
D.4 Cable ............................................................................................................................. 316
D.4.1 Powe cable........................................................................................................... 316
D.4.2 Control cables ...................................................................................................... 317
D.4.3 Recommended cable size..................................................................................... 318
D.4.4 Cable arrangement............................................................................................... 319
D.4.5 Insulation inspection ............................................................................................. 320
D.5 Breaker and electromagnetic contactor........................................................................... 320
D.6 Reactor .......................................................................................................................... 321
D.7 Filters ............................................................................................................................. 323
D.7.1 Filter model description......................................................................................... 323
D.7.2 Filter model selection............................................................................................ 323
Appendix E Further information................................................................................................ 325
E.1 Product and service queries............................................................................................ 325
E.2 Feedback on INVT VFD manuals.................................................................................... 325
E.3 Documents on the Internet.............................................................................................. 325

Goodrive270 series VFD for fan and pump Safety precautions
-1-
1 Safety precautions
1.1 What this chapter contains
Read this manual carefully and follow all safety precautions before moving, installing, operating and
servicing the product. Otherwise, equipment damage or physical injury or death may be caused.
We shall not be liable or responsible for any equipment damage or physical injury or death caused
due to your or your customers' failure to follow the safety precautions.
1.2 Safety definition
Danger: Severe personal injury or even death can result if related requirements are not followed.
Warning: Personal injury or equipment damage can result if related requirements are not followed.
Note: Actions taken to ensure proper running.
Trained and qualified professionals: People operating the equipment must have received
professional electrical and safety training and obtained the certificates, and must be familiar with all
steps and requirements of equipment installing, commissioning, running and maintaining and capable
to prevent any emergencies.
1.3 Warning
Warnings caution you about conditions that can result in severe injury or death and/or equipment
damage and advice on how to prevent dangers. The following table lists the warning symbols in this
manual.
Symbol
Name
Description
Abbreviation
Danger Danger
Severe personal injury or even death
can result if related requirements are
not followed.
Warning Warning
Personal injury or equipment
damage can result if related
requirements are not followed.
Forbid
Electrostatic
sensitive
The PCBA may be damaged if
related requirements are not
followed.
Hot
Note
Hot sides
Do not touch. The VFD base may
become hot.
Electric
shock
As high voltage still presents in the
bus capacitor after power off, wait for
at least five minutes (or 15 min / 25
min, depending on the warning
symbols on the machine) after power
off to prevent electric shock.

Goodrive270 series VFD for fan and pump Safety precautions
-2-
Symbol
Name
Description
Abbreviation
Read
manual
Read the operation manual before
operating the equipment.
Note Note Actions taken to ensure proper
running.
Note
1.4 Safety guidelines
Only trained and qualified professionals are allowed to carry out related
operations.
Do not perform wiring, inspection or component replacement when power
supply is applied. Ensure all the input power supplies have been disconnected
before wiring or inspection, and wait for at least the time designated on the
VFD or until the DC bus voltage is less than 36V. The minimum waiting time is
listed in the following.
VFD model
Minimum waiting time
380V
1.5kW±110kW
5 minutes
380V
132kW±315kW
15 minutes
380V
355kW
25 minutes
Do not refit the VFD unless authorized; otherwise fire, electric shock or other
injury may result.
The base may become hot when the machine is running. Do not touch.
Otherwise, you may get burnt.
The electrical parts and components inside the VFD are electrostatic sensitive.
Take measurements to prevent electrostatic discharge when performing
related operations.
1.4.1 Delivery and installation
Do not install the VFD on inflammables. In addition, prevent the VFD from
contacting or adhering to inflammables.
Connect the optional braking parts (such as braking resistors, braking units
or feedback units) according to the wiring diagrams.
Do not run the VFD if it is damaged or incomplete.
Do not contact the VFD with damp objects or body parts. Otherwise,
electric shock may result.
Do not push the VFD sidewards during moving.
Prevent the VFD from tipping sidewards.
Note:
Select appropriate tools for VFD delivery and installation to ensure the safe and proper running

Goodrive270 series VFD for fan and pump Safety precautions
-3-
and avoid physical injury or death. To ensure personal safety, take mechanical protective
measures like wearing safety shoes and working uniforms.
Protect the VFD against physical shock or vibration during the delivery and installation.
Do not carry the VFD only by its front cover as the cover may fall off.
The installation site must be away from children and other public places.
When the altitude exceeds 1000m, derate by 1% for every increase of 100m. When the altitude
exceeds 3000m, consult the local INVT dealer or office for details.
Use the VFD in proper environments. (For details, see 4.2.1 Installation environment.)
Prevent the screws, cables and other conductive parts from falling into the VFD.
As leakage current of the VFD during running may exceed 3.5mA, ground properly and ensure
the grounding reVLVWDQFH LV OHVVWKDQ  7KH FRQGXFWLYLW\RI 3( JURXQGLQJ FRQGXFWRU LV WKH
same as that of the phase conductor (with the same cross sectional area).
R, S and T are the power input terminals, and U, V and W are the output motor terminals.
Connect the input power cables and motor cables properly; otherwise, damage to the VFD may
occur.
1.4.2 Commissioning and running
Cut off all power supplies connected to the VFD before terminal wiring, and
wait for at least the time designated on the VFD after disconnecting the power
supplies.
High voltage presents inside the VFD during running. Do not carry out any
operation on the VFD during running except for keypad setup. For products at
voltage levels of 5 or 6, the control terminals form extra-low voltage circuits.
Therefore, you need to prevent the control terminals from connecting to
accessible terminals of other devices.
The VFD may start up by itself when power-off restart is enabled (P01.21=1).
Do not get close to the VFD and motor.
The VFD cannot be used as an "Emergency-stop device".
The VFD cannot act as an emergency brake for the motor; it is a must to install
a mechanical braking device.
During driving a permanent magnet SM, besides above-mentioned items, the
following work must be done before installation and maintenance:
9All input power supplies have been disconnected, including the main power
and control power.
9The permanent-magnet SM has been stopped, and the voltage on output
end of the VFD is lower than 36V.
9After the permanent-magnet SM has stopped, wait for at least the time
designated on the VFD, and ensure the voltage between + and - is lower

Goodrive270 series VFD for fan and pump Safety precautions
-4-
than 36V.
9During operation, it is a must to ensure the permanent-magnet SM cannot
run again by the action of external load; it is recommended to install an
effective external braking device or cut off the direct electrical connection
between the permanent-magnet SM and the VFD.
Note:
Do not switch on or switch off the input power supplies of the VFD frequently.
If the VFD has been stored without use for a long time, perform capacitor reforming (described in
chapter 8 Maintenance), inspection and pilot run for the VFD before the reuse.
Close the VFD front cover before running; otherwise, electric shock may occur.
1.4.3 Maintenance and component replacement
Only trained and qualified professionals are allowed to perform maintenance,
inspection, and component replacement for the VFD.
Cut off all power supplies connected to the VFD before terminal wiring, and
wait for at least the time designated on the VFD after disconnecting the power
supplies.
During maintenance and component replacement, take measures to prevent
screws, cables and other conductive matters from falling into the internal of the
VFD.
Note:
Use proper torque to tighten screws.
During maintenance and component replacement, keep the VFD and its parts and components
away from combustible materials and ensure they have no combustible materials adhered.
Do not carry out insulation voltage-endurance test on the VFD, or measure the control circuits of
the VFD with a megohmmeter.
During maintenance and component replacement, take proper anti-static measures on the VFD
and its internal parts.
1.4.4 Disposal
The VFD contains heavy metals. Dispose of a scrap VFD as industrial waste.
Dispose of a scrap programmable controller separately at an appropriate
collection point but not place it in the normal waste stream.

Goodrive270 series VFD for fan and pump Quick startup
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2 Quick startup
2.1 What this chapter contains
This chapter introduces the basic installation and commissioning rules that you need to follow to
realize quick installation and commissioning.
2.2 Unpacking inspection
Check the following after receiving the product.
1. Whether the packing box is damaged or dampened.
2. Whether the model identifier on the exterior surface of the packing box is consistent with the
purchased model.
3. Whether the interior surface of the packing box is abnormal, for example, in wet condition, or
whether the enclosure of the VFD is damaged or cracked.
4. Whether the VFD nameplate is consistent with the model identifier on the exterior surface of
the packing box.
5. Whether the accessories (including the manual, keypad, and expansion card) inside the
packing box are complete.
If any problems are found, contact the local INVT dealer or office.
2.3 Checking before use
Check the following before using the VFD.
1. Mechanical type of the load to be driven by the VFD to verify whether the VFD will be
overloaded during work and whether the power class of the VFD needs to be increased.
2. Whether the actual running current of the motor is less than the rated current of the VFD.
3. Whether the control accuracy required by the load is the same as that the VFD can provide.
4. Whether the grid voltage is consistent with the rated voltage of the VFD.
5. Check whether expansion cards are needed for selected functions.
2.4 Environment checking
Check the following before installing the VFD:
Note: When the VFD is built in a cabinet, the ambient temperature is the temperature of air in
the cabinet.
1. Whether the actual ambient temperature exceeds 40°C. When the temperature exceeds
40°C, derate 1% for every increase of 1°C. Do not use the VFD when the ambient
temperature exceeds 50°C.
2. Whether the actual ambient temperature is lower than -10°C. If the temperature is lower
than -10°C, use heating devices.
3. Whether the altitude of the application site exceeds 1000m. When the installation site

Goodrive270 series VFD for fan and pump Quick startup
-6-
altitude exceeds 1000 m, derate 1% for every increase of 100m. When the installation site
altitude exceeds 3000m, consult the local INVT dealer or office.
4. Whether the actual environment humidity exceeds 90% or condensation occurs. If yes, take
additional protective measures.
5. Whether there is direct sunlight or biological invasion in the environment where the VFD is
to be used. If yes, take additional protective measures.
6. Whether there is dust or inflammable and explosive gas in the environment where the VFD
is to be used. If yes, take additional protective measures.
2.5 Checking after installation
Check the following after the VFD installation is complete.
1. Whether the input power cables and motor cables meet the current-carrying capacity
requirements of the actual load.
2. Whether correct accessories are selected and installed properly, and the installation cables
meet the capacity carrying requirements of all components (including the reactor, input filter,
output reactor, output filter, DC reactor, braking unit and braking resistor).
3. Whether the VFD is installed on non-flammable materials and the heat-radiating
accessories (such as the reactor and braking resistor) are away from flammable materials.
4. Whether all control cables and power cables are run separately and Whether the routing
complies with EMC requirement.
5. Whether all grounding systems are properly grounded according to VFD requirements.
6. Whether all the installation clearances of the VFD meet the requirements in the manual.
7. Whether the installation mode conforms to the instructions in the operation manual. It is
recommended that the VFD be installed uprightly.
8. Whether the external wiring terminals of the VFD are tightly fastened with proper torque.
9. Whether screws, cables, or other conductive items are left in the VFD. If yes, take them out.
2.6 Basic commissioning
Complete the basic commissioning as follows before the actual use of the VFD:
1. According to the actual motor parameters, select the motor type, set motor parameters, and
select the VFD control mode.
2. Check whether autotuning is required. If possible, de-couple the VFD from the motor load to
start dynamic parameter autotuning. If the VFD cannot be de-coupled from the load, perform
static autotuning.
3. Adjust the ACC/DEC time according to the actual work condition of the load.
4. Perform device commissioning by means of jogging and check whether the motor rotational
direction is correct. If not, change the rotation direction by swapping any two phase wires of
the motor.
5. Set all control parameters and then perform actual run.

Goodrive270 series VFD for fan and pump Product overview
-7-
3 Product overview
3.1 What this chapter contains
This chapter mainly introduces the working principles, product features, layouts, nameplates and
model designation rules.
3.2 Basic principles
The VFD is used to control asynchronous AC induction motors and permanent magnetic synchronous
motors. The following figure shows the main circuit diagram of the VFD. The rectifier converts 3PH
AC voltage into DC voltage, the capacitor bank of intermediate circuit stabilizes the DC voltage, and
then the inverter converts DC voltage into AC voltage that can be used by an AC motor. When the
circuit voltage exceeds the maximum limit value, external braking resistor will be connected to
intermediate DC circuit to consume the feedback energy.
R
S
T
U
V
W
˄+˅
˄-˅
PE PE
Figure 3-1 Simplified main circuit diagram
R
S
T
U
V
W
˄+˅
˄-˅
Optional DC
reactor
PE PE
Figure 3±2 Main circuit diagram for 400±500kW (included) models (with built-in DC reactors)
Note: No DC reactors have been built in standard models.

Goodrive270 series VFD for fan and pump Product overview
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3.3 Product specifications
Description
Specifications
Power input
Input voltage (V)
AC 3PH 380±480V Rated voltage: 380V
Allowed voltage
transient
fluctuation
-15%±+10%
Input current (A)
See section 3.6 Product ratings.
Input frequency
(Hz)
50Hz or 60Hz; Allowed range: 47±63Hz
Power
output
Output voltage (V)
0±Input voltage
Output current (A)
See section 3.6 Product ratings.
Output power (kW)
See section 3.6 Product ratings.
Output frequency
(Hz)
0±400Hz
Technical
control
performance
Control mode Space voltage vector control, and sensorless vector
control (SVC)
Motor type Asynchronous motor (AM) and permanent magnetic
synchronous motor (SM)
Speed ratio For asynchronous motors (AMs): 1:200 (SVC), for
synchronous motors (SMs): 1:20 (SVC)
Speed control
accuracy
± 0.2% (SVC)
Speed fluctuation
± 0.3% (SVC)
Torque response
< 20ms (SVC)
Torque control
accuracy
± 10% (SVC)
Starting torque For AMs: 0.5Hz/150% (SVC)
For SMs: 2.5Hz/150% (SVC)
Overload capacity Able to run at 110% of rated current for 1min, and an
overload allowed for every 5min.
Running
control
performance
Frequency setting
method
Settings can be implemented through digital, analog,
pulse frequency, multi-step speed run, simple PLC, PID,
and communication.
Settings can be combined and the setting channels can
be switched.
Automatic voltage
regulation
The output voltage can be kept constant although the
grid voltage changes.
Fault protection Many protection functions available, such as protection
against overcurrent, overvoltage, undervoltage,

Goodrive270 series VFD for fan and pump Product overview
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Description
Specifications
overtemperature, and phase loss
Speed tracking
restart
Used to implement impact-free smooth startup for
rotating motors
Peripheral
interface
Terminal analog
input resolution
No more than 20mV
Terminal digital
input resolution
No more than 2ms
Analog input
Two inputs. AI1: 0(2)±10V / 0(4)±20mA; AI2: -10 ±+10V
Analog output
Two outputs. AO0/AO1: 0(2)±10V/0(4)±20mA
Digital input
Five regular inputs. Max. frequency: 1kHz; internal
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One high-speed input. Max. frequency: 50kHz
Digital output
One Y terminal open collector output, sharing the
terminal with S4. The function can be selected through a
jumper.
Relay output
One programmable relay output.
RO1A: NO; RO1B: NC; RO1C: common
Contact capacity: 3A/AC250V, 1A/DC30V
Extended
interfaces
Two extended interfaces: SLOT1 and SLOT2
Supporting communication expansion cards, I/O cards
and so on
Other
Installation method Supports wall-mounting, floor-mounting and
flange-mounting.
Temperature of
running
environment
-10°C ±+50°C; Derating is required when the ambient
temperature exceeds 40°C.
IP rating
IP20 for 200kW and lower
IP00 for 200kW and higher, supporting the optional part
IP20 assembly
Pollution degree
Degree 2
Cooling method
Forced air cooling

Goodrive270 series VFD for fan and pump Product overview
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3.4 Product nameplate
Shenzhen INVT Electric Co., Ltd.
Model: GD270-160-4 IP20
Power(Output): 160kW
Input: AC 3PH 380V-480V 310A 47Hz-63Hz
Output: AC 3PH 0V-Uinput 305A 0Hz-400Hz
S/N: Made in China
Figure 3-3 Product nameplate
Note: The preceding shows a standard product nameplate example. The nameplate has
markings such as "CE", "TUV", and "IP20" depending on the actual certification result.
3.5 Model designation code
A model designation code contains product information. You can find the model designation code on
the VFD nameplate and simplified nameplate.
GD270-160-4-L1
ķ ĸ Ĺ ĺ
Figure 3±4 Model description
Field
Sign
Description
Content
Product
series
abbreviation
ķProduct series
abbreviation GD270: Goodrive270 series VFD for fan and pump
Rated power
ĸ
Power range
160: 160kW
Voltage class ĹVoltage class 4: AC 3PH 380V±480V
Rated voltage: 380V
Management
number ĺOptional
Default: Empty
L1: with built-in DC reactor, applicable to 30±355kW
models.
L2: with output AC reactor, applicable to 220kW and
higher models.
L3: with built-in DC reactor and output AC reactor,
applicable to 220kW and higher models.
Note: DC reactors are standard parts for 400±
500kW models.