Esco invt GD350A Series User manual

Product manual
Frequency inverter
GD350A Series
This operating instruction is to be read carefully and
kept at the place of installation of the device.
INVT - GD350A
INVT - GD350A

GD350A series high-performance multifunction VFD
i
Preface
Thank you for choosing GD350A series variable-frequency drive (VFD).
If not otherwise specified in this manual, the VFD always indicates GD350A series VFD, which is a
high-performance multifunctional VFD that can drive both synchronous motors (SMs) and
asynchronous motors (AMs) and supports torque control, speed control, and position control. The VFD
is armed with advanced vector control technology and the latest digital processor dedicated for motor
control, thus enhancing product reliability and adaptability to the environment. The VFD adopts
customized and industrialized design to realize excellent control performance through optimized
functions and flexible applications.
In order to meet diversified customer demands, the VFD provides abundant expansion cards including
programmable expansion card, PG card, communication card and I/O expansion card to achieve
various functions as needed. Each VFD can be installed with three expansion cards at most.
The programmable expansion card adopts the mainstream development environment for customers
to carry out secondary development easily, fulfilling varied customized needs and reducing customer
cost.
The PG card supports a variety of encoders like incremental encoders and resolver-type encoders. In
addition, it also supports pulse reference and frequency-division output. The PG card adopts digital
filter technology to improve EMC performance and to realize stable transmission of the encoder signal
over a long distance. It is equipped with encoder offline detection function to contain the impact of
system faults.
The VFD supports multiple kinds of popular communication modes to realize complicated system
solutions. It can be connected to the internet with optional wireless communication card, by which you
can monitor the VFD state anywhere any time through mobile App.
The VFD uses high power density design. Some power ranges carry built-in DC reactor and braking
unit to save installation space. Through overall EMC design, it can satisfy the low noise and low
electromagnetic interference requirements to cope with challenging grid, temperature, humidity and
dust conditions, thus greatly improving product reliability.
This operation manual presents installation wiring, parameter setup, fault diagnosis and trouble
shooting, and precautions related to daily maintenance. Read through this manual carefully before
installation to ensure the VFD is installed and operated in a proper manner to give full play to its
excellent performance and powerful functions.
If the product is ultimately used for military affairs or manufacture of weapon, it will be listed on the
export control formulated by Foreign Trade Law of the People's Republic of China. Rigorous review
and necessary export formalities are needed when exported.
We reserve the right to update the manual information without prior notice and have the final
interpretation for the manual content.

GD350A series high-performance multifunction VFD
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 symbols.................................................................................................................1
1.4 Safety guidelines.................................................................................................................2
2 Quick startup...............................................................................................................................5
2.1 What this chapter contains ..................................................................................................5
2.2 Unpacking inspection ..........................................................................................................5
2.3 Checking before applying....................................................................................................5
2.4 Environment........................................................................................................................5
2.5 Installation confirmation.......................................................................................................6
2.6 Basic commissioning...........................................................................................................6
3 Product overview ........................................................................................................................8
3.1 What this chapter contains ..................................................................................................8
3.2 Basic principle.....................................................................................................................8
3.3 Product specifications ....................................................................................................... 10
3.4 Product nameplate............................................................................................................13
3.5 Model designation code ....................................................................................................13
3.6 Product ratings.................................................................................................................. 14
3.7 Structure diagram .............................................................................................................15
4 Installation guidelines ..............................................................................................................17
4.1 What this chapter contains ................................................................................................17
4.2 Mechanical installation ......................................................................................................17
4.3 Main circuit standard wiring...............................................................................................23
4.4 Control circuit standard wiring ........................................................................................... 28
4.5 Wiring protection ...............................................................................................................31
5 Basic operation guidelines.......................................................................................................33
5.1 What this chapter contains ................................................................................................33
5.2 Keypad introduction ..........................................................................................................33
5.3 Keypad display..................................................................................................................37
5.4 Operating the VFD by keypad ...........................................................................................39
5.5 Basic operations ...............................................................................................................52
6 Function parameter list........................................................................................................... 139
6.1 What this chapter contains .............................................................................................. 139
6.2 Function parameter list.................................................................................................... 139
7 Troubleshooting...................................................................................................................... 253

GD350A series high-performance multifunction VFD
iii
7.1 What this chapter contains .............................................................................................. 253
7.2 Indications of alarms and faults ....................................................................................... 253
7.3 Fault reset....................................................................................................................... 253
7.4 Fault history .................................................................................................................... 253
7.5 VFD faults and solutions ................................................................................................. 253
7.6 Analysis on common faults .............................................................................................. 262
7.7 Countermeasures on common interference ..................................................................... 268
8 Maintenance............................................................................................................................ 273
8.1 What this chapter contains .............................................................................................. 273
8.2 Periodical inspection ....................................................................................................... 273
8.3 Cooling fan...................................................................................................................... 275
8.4 Capacitor ........................................................................................................................ 276
8.5 Power cable .................................................................................................................... 278
9 Communication....................................................................................................................... 279
9.1 What this chapter contains .............................................................................................. 279
9.2 Modbus protocol introduction .......................................................................................... 279
9.3 Application ...................................................................................................................... 279
9.4 RTU command code and communication data................................................................. 285
9.5 Common communication faults ....................................................................................... 303
Appendix A Expansion cards .................................................................................................... 304
A.1 Model definition .............................................................................................................. 304
A.2 Dimensions and installation ............................................................................................ 311
A.3 Wiring............................................................................................................................. 314
A.4 IO expansion card——EC-IO501-00 ............................................................................... 314
A.5 Programmable expansion card——EC-PC502-00........................................................... 316
A.6 Communication card function description........................................................................ 319
A.7 PG expansion card function description .......................................................................... 328
Appendix B Technical data........................................................................................................ 344
B.1 What this chapter contains.............................................................................................. 344
B.2 Derated application......................................................................................................... 344
B.3 Grid specifications .......................................................................................................... 345
B.4 Motor connection data .................................................................................................... 345
B.5 Application standards...................................................................................................... 345
B.6 EMC regulations ............................................................................................................. 346
Appendix C Dimension drawings.............................................................................................. 348
C.1 What this chapter contains.............................................................................................. 348
C.2 Keypad structure ............................................................................................................ 348
C.3 VFD structure ................................................................................................................. 349
C.4 VFD structure ................................................................................................................. 349
Appendix D Optional peripheral accessories........................................................................... 356

GD350A series high-performance multifunction VFD
iv
D.1 What this chapter contains.............................................................................................. 356
D.2 Wiring of peripheral accessories ..................................................................................... 356
D.3 Power supply.................................................................................................................. 357
D.4 Cables............................................................................................................................ 358
D.5 Breaker and electromagnetic contactor........................................................................... 362
D.6 Reactors......................................................................................................................... 363
D.7 Filters ............................................................................................................................. 365
D.8 Braking system............................................................................................................... 368
Appendix E STO function description ...................................................................................... 372
E.1 STO function logic .......................................................................................................... 372
E.2 STO channel delay description ....................................................................................... 372
STO function installation checklist ......................................................................................... 373
Appendix F Further information................................................................................................ 374
F.1 Product and service queries ............................................................................................ 374
F.2 Feedback on INVT VFD manuals .................................................................................... 374
F.3 Documents on the Internet .............................................................................................. 374

GD350A series high-performance multifunction VFD
-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 VFD. If these safety precautions are ignored, physical injury or death may occur, or
damage may occur to the equipment.
If any physical injury or death or damage to the equipment occur due to neglect of the safety
precautions in the manual, our company will not be responsible for any damages and we are not legally
bound in any manner.
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 working on the VFD must have received professional
electrical and safety training and obtained the certificates, and must be familiar with all steps and
requirements of VFD installing, commissioning, running and maintaining and capable to prevent any
emergencies.
1.3 Warning symbols
Warnings caution you about conditions which can result in serious injury or death and/or damage to
the equipment, and advice on how to avoid the danger. Following warning symbols are used in this
manual.
Symbols Name Instruction Abbreviation
Danger Danger
Serious physical injury or even death
may occur if related requirements are
not followed
Warning Warning
Physical injury or damage to the
equipment may occur if related
requirements are not followed
Forbid
Electrostatic
discharge
The PCBA may be damaged if
related requirements are not followed
Hot Hot sides The VFD base may become hot. Do
not touch.
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

GD350A series high-performance multifunction VFD
-2-
Symbols Name Instruction Abbreviation
symbols on the machine) after power
off to prevent electric shock
Read
manual
Read the operation manual before
operating on the equipment
Note Note Actions taken to ensure proper
operation
Note
1.4 Safety guidelines
Only trained and qualified electricians 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 are disconnected before
wiring and 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 table below.
VFD model
Minimum waiting time
1R5G/2R2P–110G/132P
5 min
132G/160P–315G/355P
15 min
355G/400P and higher
25 min
Do not refit the VFD unless authorized; otherwise, fire, electric shock or other
injuries may occur.
The base of the radiator may become hot during running. Do not touch to avoid
hurt.
The electrical parts and components inside the VFD are electrostatic. Take
measures to prevent electrostatic discharge during related operation.
1.4.1 Delivery and installation
Install the VFD on fire-
retardant material and keep the VFD away from
combustible materials.
Connect the optional braking parts (braking resistors, braking units or feedback
units) according to the wiring diagram.
Do not operate on a damaged or incomplete VFD.
Do not touch the VFD with wet items or body parts; otherwise, electric shock may
occur.
Note:
Select appropriate tools for delivery and installation to ensure a safe and proper running of the

GD350A series high-performance multifunction VFD
-3-
VFD and avoid physical injury or death. To ensure physical safety, the installation staff should take
mechanical protective measures like wearing safety shoes and working uniforms
Protect the VFD against physical shock or vibration during delivery and installation.
Do not carry the VFD by its front cover only as the cover may fall off.
The installation site must be away from children and other public places.
When the installation site altitude exceeds 1000m, derate by 1% for every increase of 100m; when
the installation site altitude exceeds 3000m, consult local INVT dealer or office.
Use the VFD in proper environment. (For details, see "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 resistance is less than 10Ω. The conductivity of PE grounding conductor is the
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 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
Disconnect all power sources applied to the VFD before terminal wiring, and wait
for at least the time designated on the VFD after disconnecting the power
sources.
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 P01.21=1. Do not get close to the VFD and
motor.
The VFD cannot be used as "Emergency-stop device".
The VFD cannot act as an emergency brake for the motor; it is a must to install
mechanical brake device.
During driving a permanent magnet SM, besides above-mentioned items, the
following work must be done before installation and maintenance:
a) Disconnect all the input power sources including main power and control
power.
b) Ensure the permanent-magnet SM has been stopped, and the voltage on
output end of the VFD is lower than 36V.
c) After the permanent-magnet SM is stopped, wait for at least the time
designated on the VFD, and ensure the voltage between + and - is lower
than 36V.

GD350A series high-performance multifunction VFD
-4-
d) During 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 effective
external brake device or disconnect the direct electrical connection between
permanent-magnet SM and the VFD.
Note:
Do not switch on or switch off input power sources of the VFD frequently.
If the VFD has been stored for a long time without being used, set the capacitance (see
"Maintenance" and carry out inspection and pilot run on the VFD before use.
Close the 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 on the VFD.
Disconnect all the power sources applied to the VFD before terminal wiring, and
wait for at least the time designated on the VFD after disconnecting the power
sources.
Take measures to prevent screws, cables and other conductive matters from
falling into the VFD during maintenance and component replacement.
Note:
Use proper torque to tighten the screws.
Keep the VFD and its parts and components away from combustible materials during maintenance
and component replacement.
Do not carry out insulation voltage-endurance test on the VFD, or measure the control circuits of
the VFD with megameter.
Take proper anti-static measures on the VFD and its internal parts during maintenance and
component replacement.
1.4.4 What to do after scrapping
The heavy metals inside the VFD should be treated as industrial effluent.
When the life cycle ends, the product should enter the recycling system. Dispose
of it separately at an appropriate collection point but not place it in the normal
waste stream.

GD350A series high-performance multifunction VFD
-5-
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.

Whether the packing box is damaged or dampened.
Whether the model identifier on the exterior surface of the packing box is consistent with the
purchased model.
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.
Whether the VFD nameplate is consistent with the model identifier on the exterior surface of
the packing box.
Whether the accessories (including the manual and keypad) inside the packing box are
complete.
If any problems are found, contact the local dealer or INVT office.
2.3 Checking before applying
Check the following before applying the VFD.
Check the load type to verify that there is no overload of the VFD during work and check
whether the power class of the VFD needs to be increased.
Check whether the actual running current of the motor is less than the rated current of the
VFD.
Check whether the control accuracy required by the load is the same of the VFD.
Check whether the grid voltage is consistent with the rated voltage of the VFD.
Check whether expansion card are needed for selected functions.
2.4 Environment
Check the following before the actual installation and use:
Note: For a cabinet-built VFD, the ambient temperature is the air temperature inside the cabinet.
Check whether the ambient temperature of the VFD exceeds 40°C. If it exceeds 40°C, derate
1% for every increase of 1°C. It is not recommended to use the VFD if the ambient
temperature exceeds 50°C.
Check whether the ambient temperature of the VFD in actual use is lower than -10°C. If yes,
use heating facilities.
When the altitude exceeds 1000m, derate by 1% for every increase of 100m. When the
altitude exceeds 2000m, configure an isolation transformer at the VFD input end. It is not