Vicruns VD300 Series User manual

Preface
Thank you for purchasing VD300 Series Inverters!
VD300 is a high-performance vector control inverter developed by VicRuns. Adopting advanced
vector control algorithm, it is widely used for asynchronous motor speed control. Through its
integrated EMC design and with optimized PWM control technique to meet users’ demand on
environmental requirement such as low-noise in application places and low EMI. It has perfect
anti-tripping control and good adaptive ability to bad power grid, temperature, humidity and dust, in
order to satisfy various sophisticated requirement under high precision drive applications, thus to
satisfy users expectation of higher reliability and stronger adaptability to environment of their
equipment, achieving industry specialization and personalized motor drive and control system
solution.
VD300 series high performance vector control inverter has following outstanding features:
1. Various control method
Supporting control method: SVC control mode 0, SVC control mode 1, linear V/F control, parabola
V/F control, multi-stage V/F control, V/F separation control.
2. Leading vector control algorithm
Optimized no-speed FVC control has better low speed stability, stronger low frequency load capacity,
supporting speed control and torque control.
3. Support multi-function I/O extension and multi-function MFI extension port
Multi-function I/O extension card, multi-function MFI extension port can connect related extension
function unit defined by manufacturer.
This manual provides the related issues: user installing and site wiring, quick debug, parameters
setting, failure diagnose and eliminate and daily maintenance and correlation matters. Please read
this manual to make sure you can install, use and maintain the inverter correctly, then play their
superior performance.
Please send this manual to the user or maintainer of this inverter, and properly kept.
Unpacking and Inspection:
Every inverter has been inspected rigorously before shipping.
Please confirm carefully when unpacking the packing carton:
● Check if any damage signs of the product and its package.
● Check if the model and inverter rated values on the nameplate are the same as stated on your
order and user manual.
● The box contains the inverter, manufacturer certificate, user manual.
If the product is damaged during transportation, or there is any omission or damage, please contact
our company or your local supplier immediately.
First time use suggests:
The users who use this product for the first time shall read this manual carefully. For any doubt on
certain functions and performances, please contact the technical support personnel of our company
for help, so as to use this product properly. With commitment to the constant improvement of the
inverter products, our company may change the information provided without additional notice.
VD300 series inverter is confirmed to below international standard, has passed the CE certification.
IEC/EN 61800-5-1: 2003 adjustable speed electric drive system safety regulation requirements;
IEC/EN 61800-3: 2004 adjustable speed electric drive system: part 3: product EMC standard and its
specific test method;
IEC/EN61000-2-1, 2-2, 3-2, 3-3, 4-2, 4-3, 4-4, 4-5, 4-6; EMC international and EU standard .

Contents
Chapter 1 Safety and Precautions................................................................................................- 1 -
1.1 Safety Definition.....................................................................................................................- 1 -
1.2 Safety Precautions.................................................................................................................- 1 -
1.3 General Precautions ..............................................................................................................- 3 -
Chapter 2 Product Information .....................................................................................................- 6 -
2.1 Designation Rules..................................................................................................................- 6 -
2.2 Nameplate .............................................................................................................................- 6 -
2.3 Inverter Series .......................................................................................................................- 6 -
2.4 Product Specifications............................................................................................................- 8 -
2.5 Physical Appearance and Main Structure Diagram ...............................................................- 10 -
2.6 Product Appearance and Installation Dimension................................................................... - 11 -
2.7 Physical Dimensions Of External Keyboard..........................................................................- 13 -
2.8 Braking Unit Model Selection Guide .....................................................................................- 14 -
2.9 Routine Repair and Maintenance of Inverter.........................................................................- 15 -
2.10 Warranty Introduction.........................................................................................................- 17 -
Chapter 3 Mechanical and Electrical Installation.........................................................................- 18 -
3.1 Installation Environment .......................................................................................................- 18 -
3.2 The Installation Direction and Space.....................................................................................- 18 -
3.3 Removing and Mounting the Cover Plate and Keyboard.......................................................- 19 -
3.4 Inverter and External Electrical Parts Connection .................................................................- 20 -
3.5 Standard Wiring Diagram .....................................................................................................- 25 -
3.6 Main Circuit Terminals..........................................................................................................- 27 -
3.7 Control Circuit Terminal........................................................................................................- 30 -
Chapter 4 Operation and Display ...............................................................................................- 38 -
4.1 Introduction of Operation and Display Interface ....................................................................- 38 -
4.2 Motor Parameter Self-learning..............................................................................................- 40 -
4.3 Password Setting .................................................................................................................- 41 -
4.4 Parameter Lock (authority lower than password) ..................................................................- 41 -
Chapter 5 Function Parameter Table..........................................................................................- 42 -
Chapter 6 Parameter Description...............................................................................................- 85 -
6.1 P00 Basic Function..............................................................................................................- 85 -
6.2 P01 Stop Control Parameter Group ......................................................................................- 90 -
6.3 P02 Motor 1 Parameters ......................................................................................................- 96 -
6.3 P02 Motor 1 Parameters ......................................................................................................- 96 -
6.4 P03 Motor 1 Vector Control Parameters Group.....................................................................- 97 -
6.5 P04 motor 1 V/F Control Parameters Group .......................................................................- 102 -
6.6 P05 Input Terminals Function Parameter Group .................................................................- 105 -
6.7 P06 Output Terminal Function Parameter Group ................................................................ - 117 -
6.8 P07 AIAO Correction Group ...............................................................................................- 123 -
6.9 P08 Process PID Control Parameter Function....................................................................- 125 -
6.10 P09 Special Function Parameter Group............................................................................- 132 -
6.11 P10 Keyboard and Display ...............................................................................................- 141 -
6.12 P11 MS Speed Function and Simple PLC Function ..........................................................- 146 -
6.13 P13 Protection Function Parameters Group .....................................................................- 151 -
6.14 P14 Error Record Parameter Group .................................................................................- 158 -
6.15 P15 Modbus Communication Parameter Group................................................................- 160 -
6.16 P20 Motor 2 Parameter Group .........................................................................................- 161 -
6.17 P21 Motor 2 V/F Control Parameter Group.......................................................................- 161 -
6.18 P28 Status Monitoring Parameter Group ..........................................................................- 162 -
6.19 P29 User Parameter Group..............................................................................................- 164 -
Chapter 7 EMC Guide..............................................................................................................- 165 -
7.1 Definition............................................................................................................................- 165 -

7.2 EMC Standard Introduction ................................................................................................- 165 -
7.3 EMC Guide ........................................................................................................................- 165 -
Chapter 8 Fault Shooting and Solutions ...................................................................................- 167 -
8.1 Fault Alarm and Countermeasures .....................................................................................- 167 -
8.2 Common Faults and Solutions............................................................................................- 171 -
Chapter 9 Communication Protocol..........................................................................................- 172 -
9.1 About Protocol ...................................................................................................................- 172 -
9.2 Application Methods...........................................................................................................- 172 -
9.3 Bus Structure .....................................................................................................................- 172 -
9.4 Protocol Description...........................................................................................................- 172 -
9.5 Communication Frame Structure........................................................................................- 172 -
9.6 Command Code and Communication Data Description ......................................................- 173 -
Appendix A Multi-function I/O Extension Card...........................................................................- 181 -

VD300 Series Inverter User Manual Safety and Precautions
- 1 -
Chapter 1 Safety and Precautions
1.1 Safety Definition
In order to ensure that your personal, equipment and property safety, before the using the frequency
converter, please be sure to read this chapter carefully, and in the subsequent handling, installation,
debugging, operation and maintenance process in accordance with the implementation. The users
must comply with the relevant safety instructions in this manual, if any danger or loss of property
caused by the uses is not related to the company. The security identify definition in this manual is
divided into "danger" and "attention" two types.
● Danger arising due to improper operations may cause severe hurt or even death and major
property damage.
● Danger arising due to improper operations may cause moderate damage or light hurt, and
equipment damage or property damage.
1.2 Safety Precautions
1.2.1 Before Installation
● Do not install the equipment if you find water seepage, component missing or damage upon
unpacking.
● Do not install the equipment if the packing list does not conform to the product you received
● Handle the equipment with care during transportation to prevent damage.
● Do not touch the components with your hands. Failure to comply will result in static electricity
damage.
1.2.2 During Installation
● Install the equipment on incombustible objects such as metal, and keep it away from combustible
materials. Failure to comply may result in a fire.
● Install the equipment according to regulations and tighten the fastening bolts. Failure to comply
may result in equipment falling.
● Do not loosen the fixed screws of the components, especially the screws with red mark.

Safety and Precautions VD300 Series Inverter User Manual
- 2 -
● Do not drop conductive objects as wire ends or screw into inverter. Failure to comply will result in
damages.
● Install inverter in place avoid to vibration, water drops and direct sunlight.
● When two inverters are installed in the same cabinet, arrange the installation positions properly to
ensure normal cooling effect, keep the cabinet with good ventilation.
1.2.3 At Wiring
● Wiring must be performed only by qualified personnel under instructions described in this manual.
Failure to comply may result in unexpected accidents.
● A circuit breaker must be used to isolate the power supply and inverter. Failure to comply may
result in a fire.
● Ensure that the power supply is cut off before wiring. Failure to comply may result in electric shock.
● Connect inverter to ground properly by standard. Failure to comply may result in electric shock.
● Do not connect the input power with output terminals U, V, W, confirm the mark on terminal before
connection to avoid wrong wiring. Failure to comply can damage the inverter!
● Never connect the braking resistor between the DC bus terminals P+ and P-. Failure to comply
may result in a fire.
● The wire size of main circuit should conformed to standard, the wiring should comply with EMC
and local safety standard. Failure to comply may result in accidents.
● Use shielded cable for input output control circuit of analog and rapid speed pulse signal, and
ensure the shielding layer is reliably grounded.
1.2.4 Before Power-on:
● Check that the following requirements are met:
● The voltage class of the power supply is consistent with the rated voltage class of the AC drive.
● The input terminals (R, S, T) and output terminals (U, V, W) are properly connected.
● No short-circuit exists in the peripheral circuit.
● The wiring is secured.
● The external units of inverter and wires are configured under the manual instructed, all matched
circuit and wiring are correctly connected.
● Failure to comply will result in damage to inverter!
1.2.5 After Power-on
● Do not open the cover after inverter power-on to prevent electric shock.
● Do not touch or operate the inverter with wet hands. Failure to comply will result in electric shock.
● Do not touch any terminal of inverter after power-on, or drag connection cable. Failure to comply
will result in equipment damage or electric shock.
● Do not try to check or change the manufacturer parameter. Failure to comply may result in

VD300 Series Inverter User Manual Safety and Precautions
- 3 -
malfunction or damage to inverter!
● Make sure the mechanical equipment is ready to start before inverter run with loading, make sure
related staff is in safety zone. Failure to comply will result in damage or personal hurt!
● Please pay attention to hiding accident which may result in personal hurt or property damage while
motor is run, if it is necessary to identify the motor parameter.
1.2.6 During Operation
● Do not touch the cooling fan or braking resistor etc, otherwise may cause personal injury!
● Do not do inspection while inverter run, except for professional technician, otherwise may cause
inverter damaged or personal injury.
● Do not move inverter or the installed cabinet while it is run, keep external objects falling into the
device. Failure to comply will result in damage.
● Start/Stop inverter via terminal function or other control method, try not to start inverter via directly
power-on control method. Do not use contactor on inverter output terminal to control motor starting or
stop.
1.2.7 During Maintenance
● Do not repair and maintain the equipment if power is connected. Otherwise there will be danger of
electric shock!
● If the LED is still on light on control panel, it is Disabled to disassemble the body in order to avoid
electric shock.
●The inverter shall be repaired and maintained only by the qualified person who has received
professional training. Otherwise, it may cause personal injury or equipment damage.
● For all the standard equipped or optional accessories, must be dismounted or mounted while the
inverter power is disconnected.
1.3 General Precautions
1.3.1 Motor Insulation Inspection
For first time usage, motor is left unused for long time or periodically inspected, insulation inspection
must be done to avoid motor coils insulation failure which may result in inverter damage. Disconnect
motor and inverter before inspection, 500V voltage type Meg-ohmmeter is recommended. It is up to
standard if insulation resist value no less than 5MΩ.
1.3.2 Motor Overheat Protection
If selected motor and inverter rated capacity doesn’t match, especially the inverter rated power larger
than motor rated power, it is necessary to adjust the motor protect parameter of inverter into actual
used motor parameter. Or a thermal relay can be installed to motor to protect motor.
1.3.3 Run with Power Frequency (under or above)
This inverter can provide 0.00Hz~650.00Hz output frequency, so motor is run at low frequency on
long time. Take care of motor cooling or frequency converted motor could be a choice. When motor
run with over-limit rate frequency, consider the bearing capacity of mechanic system with high speed,
to avoid the shortening of lifespan of equipment.

Safety and Precautions VD300 Series Inverter User Manual
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1.3.4 Vibration and Resonance of Mechanic System
Since inherent property of mechanic system, inverter could have mechanic system resonance point
while acceleration or deceleration, by setting inverter jump frequency can avoid mechanic system
resonance point. If customer required run frequency is happened to be the same with mechanic
resonance frequency, it is necessary to change run frequency or change the inherent resonance
frequency of mechanic system.
1.3.5 Regarding Motor Heating and Noise
Inverter output voltage is PWM wave, with some higher harmonic, so motor temperature rising, noise
and vibration should increase a little comparing with power frequency, which is normal.
1.3.6 Pressure Sensing Device on Output Side or Improve Power Factor Capacitor
Inverter output voltage is PWM wave, if output side installed capacitor to improve power factor or
pressure sensing device to anti-thunder, it could easily result in instant over current or damage to
inverter. Disassemble such devices before inverter installation.
1.3.7 Switchover Device as Contactor Installed on Inverter Input Output Side
If there is a contactor between power supply and inverter input terminal, it is Disabled to use it to
start/stop inverter. When it is very necessary to use the contactor to start/stop inverter, the action
interval time should not less than 1hr. Since frequent charge/discharge could easily shorten the
lifespan of electrolytic capacitor inside inverter. If there is a contactor between motor and inverter
output terminal, make sure if motor is static and inverter is without output, then switchover the
contactor, failure to comply may damage the inverter.
1.3.8 Applications with Non-rated Voltage
The application voltage range used on inverter should not exceed the regulated voltage on this
manual, low voltage or higher voltage can easily damage inverter.
If power is not Enable, then use voltage reduction or voltage rising device to deal with voltage
conversion in order to comply with inverter input voltage requirement.
1.3.9 Three-phase Input Change to Two Phase Input
If inverter is 3phase input type, do not use 2phase power supply, otherwise it could result in phase
loss protection error even inverter damage.
1.3.10 Lightening Surge Protection
Although there is lightening overvoltage overcurrent device inside inverter, which has certain
self-protection function for lightening induction. But for user located in lightening frequent zones, it is
necessary to add lightening protection unit in front of inverter, this does good to extend inverter
lifespan.
1.3.11 Altitude Level and Voltage Reduction Usage
Place with altitude exceeding 2000M, inverter cooling effect get worse due to air condense reduced,
so under-rated usage of inverter is necessary.
1.3.12 Common DC Bus Introduction
In condition of several units of inverter run at the same time, then common DC bus can be adopted to
save electricity. This type of inverter support common DC bus, but make sure the power specification
of those inverters are very close in advance, otherwise it could damage inverter.
1.3.13 Precaution of Inverter Abandonment
Inverter belongs to electric electronic device, burning disposal will result lots of harmful gas even
exploding. Please refer to related national laws and regulations to dispose or abandon.
1.3.14 Regarding Adaptable Motor
① This series inverter standard matching motor is quaternary squirrel-cage asynchronous induction
motor or permanent magnet synchronous motor. When the dragging motor is not above type, please
refer to motor rated current to select the suitable inverter.
② The cooling fan and rotor spindle of general motor are coaxial connected. While motor rotating
speed reducing resulted cooling fan Deceleration proportionally and so making heat dissipation worse.
As a conclusion, if motor run at low frequency stage for long time, it is necessary to add a strong

VD300 Series Inverter User Manual Safety and Precautions
- 5 -
exhaust fan or change the motor to variable frequency motor.
③ Inverter default setup has built-in standard parameter for its adaptive motor, but in actual
application, it is necessary to identify motor parameter or change its original default setup of motor
parameter. Otherwise it will affect operation efficiency and protection performance to motor.
④ Due to cable or motor internal short circuit can result in inverter alarm or even exploding. So
insulation and short circuit test on wiring and motor should be done before connecting and installing
motor. If the system has been idled for long time, then a retest should be done to avoid system
damage or performance reduce.

Product Information VD520 Series Inverter User Manual
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Chapter 2 Product Information
2.1 Designation Rules
Fig 2.1-1 Designation Rules
2.2 Nameplate
● The bar code on inverter nameplate is the only code to recognize its identity, so the bar code is the
most important basis for the after sales service.
2.3 Inverter Series
Table 2-1 Product specifications and technical data
Adaptable Motor
Model No.
Power
Capacity
(kVA)
Rated
Input
Current
(A)
Rated
Output
Current
(A) kW HP
Single-phase Power supply: 220V, 50/60Hz
VD300-2S-0.7GB 1.5 8.2 4.0 0.75 1
VD300-2S-1.5GB 3.0 14.0 7.0 1.5 2
VD300-2S-2.2GB 4.0 23.0 9.6 2.2 3
VD300-2S-3.7GB 5.9 35.0 17.0 3.7 5
VD300-2S-5.5GB 8.9 50.0 25.0 5.5 7.5

VD520 Series Inverter User Manual Product Information
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Three-phase Power supply:380V, 50/60Hz
VD300-4T-0.7GB 1.5 3.4 2.5 0.75 1
VD300-4T-1.5GB 3.0 5.0 3.8 1.5 2
VD300-4T-2.2GB 4.0 5.8 5.1 2.2 3
VD300-4T-3.7GB 5.9 10.5 9.0 3.7 5
VD300-4T-5.5GB VD300-4T-5.5PB 8.9 14.6 13.0 5.5 7.5
VD300-4T-7.5GB VD300-4T-7.5PB 11.0 20.5 17.0 7.5 10
VD300-4T-11GB VD300-4T-11PB 17.0 26.0 25.0 11.0 15
VD300-4T-15GB VD300-4T-15PB 21.0 35.0 32.0 15.0 20
VD300-4T-18.5G VD300-4T-18.5PB 24.0 38.5 37.0 18.5 25
VD300-4T-22G VD300-4T-22P 30.0 46.5 45.0 22 30
VD300-4T-30G VD300-4T-30P 40.0 62.0 60.0 30 40
VD300-4T-37G VD300-4T-37P 50.0 76.0 75.0 37 50
VD300-4T-45G VD300-4T-45P 60.0 92.0 91.0 45 60
VD300-4T-55G VD300-4T-55P 72.0 113.0 112.0 55 70
VD300-4T-75G VD300-4T-75P 100.0 157.0 150.0 75 100
VD300-4T-90G VD300-4T-90P 116.0 180.0 176.0 90 110
VD300-4T-110G VD300-4T-110P 138.0 214.0 210.0 110 150
VD300-4T-132G VD300-4T-132P 167.0 256.0 253.0 132 175
VD300-4T-160G VD300-4T-160P 200.0 307.0 304.0 160 210
VD300-4T-185G VD300-4T-185P 231.0 350.0 326.0 185 240
VD300-4T-200G VD300-4T-200P 250.0 385.0 377.0 200 260
VD300-4T-220G VD300-4T-220P 280.0 430.0 426.0 220 300
VD300-4T-250G VD300-4T-250P 315.0 468.0 465.0 250 350
VD300-4T-280G VD300-4T-280P 355.0 525.0 520.0 280 370
VD300-4T-315G VD300-4T-315P 396.0 590.0 585.0 315 500
VD300-4T-355G VD300-4T-355P 445.0 665.0 650.0 355 420
VD300-4T-400G VD300-4T-400P 520.0 785.0 725.0 400 530
VD300-4T-450G VD300-4T-450P 565.0 883.0 820.0 450 600
VD300-4T-500G VD300-4T-500P 630.0 890.0 860.0 500 660
VD300-4T-560P 700.0 990.0 950 560 750

Product Information VD520 Series Inverter User Manual
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2.4 Product Specifications
Table 2-2 Product technical specification
Item Specifications
Rated input
voltage
Grade of rated voltage is 220V or 380V: voltage continued
fluctuation±10%, brief fluctuation:-15~+10%, voltage
imbalance rated<3%, aberration rate meet IEC61800-2
requirements.
Rated input
current Refer to table 2-1
Power input
Rated frequency 50/60Hz, fluctuation range ±5%
Standard adaptive
motor Refer to table 2-1
Rated capacity Refer to table 2-1
Rated current Refer to table 2-1
Power output
Output voltage Output three-phase under the rated input condition,
0V~rated input voltage, error is less than±3%.
Highest frequency 0Hz~650Hz
Carrier frequency 1.0KHz~16KHz, auto-adjust carrier frequency.
Input frequency
resolution 0.01Hz (digit setup mode)
Control mode
SVC control mode 0, SVC control mode 1, linear V/F
control, parabola V/F control, multi-stage V/F, V/F
separation
Start torque 0.25Hz/150% (vector control)
Motor type asynchronous motor
Speed range 1: 100
Speed control
accuracy ±0.2%
Torque control
accuracy 5%
Overload capacity
G type: 150% rated current for 60sec; 200% rated current
for 1sec.
P type: 120% rated current for 60sec; 150% rated current
for 5sec.
Torque boost Auto torque boost, manual torque boost by 0.1%~10.0%.
Acceleration /
deceleration curve
Linear or S curve acceleration/deceleration mode, 4 types
of acceleration/deceleration time, range 0.0s~3600.0s.
Main Control
Functions
DC braking DC braking frequency: 0.00Hz~max output frequency,
braking time: 0.0s~60.0s, braking current: 0.0%~100.0%.

VD520 Series Inverter User Manual Product Information
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Jogging control Jogging frequency range: 0.00Hz~max output frequency,
jog acceleration/deceleration time 0.0s~3600.0s.
Easy PLC,
multi-stage speed
run
Via built-in PLC or control terminal can realize max 16stage
speed run.
Built-in PID Can realize process control conveniently.
Auto-adjustment
of the voltage
Can keep the output voltage constant automatically when
the grid voltage changed.
Current
Suppression
When load changes, it limits output current automatically,
against over-current tripping.
Quick Current
Suppression
Function
Reduce over-current failure on the max extent, and protect
normal operation of inverter.
Dynamic over
voltage
suppression
When operating frequency changes it can suppress energy
feedback automatically, to prevent tripping due to bus
overvoltage.
Oscillation
suppression
Optimize V/F oscillation arithmetic, realize V/F steady
operation.
Power dip ride
through
It ensures that the AC drive continues to run for a short time
when an instantaneous power failure or sudden voltage
reduction occurs.
Timing control Timing control function: setting time range: 0min-65535min.
Multi-motor
switchover
Two motors can be switched over via two groups of motor
parameters.
Individual
Function
Support extension
Support multi-function I/O extension card and MFI port
related expansion function components defined by the
manufacturer.
Running
command source
Operation panel, control terminals, serial communication
port, you can perform switchover between these sources in
various ways.
Frequency source
There are a total of 10 frequency sources, such as digital
setting, analog voltage setting, analog current setting, pulse
setting and serial communication port setting, you can
perform switchover between these sources in various ways.
Auxiliary
frequency source
There are ten auxiliary frequency source, it can implement
fine tuning of auxiliary frequency and frequency synthesis.
Operation
Input terminal
6 digit terminal input, 1 terminal support rapid pulse input on
max 100kHz.
2 analog input terminals, with optional 0/4mA to 20mA
current input or 0V to 10V voltage input.
Extension capacity: 3 digital input terminals and 1 analog
input terminals.

Product Information VD520 Series Inverter User Manual
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Output terminal
2 analog output terminals; with optional 0/4mA to 20mA
current output or 0V to 10V voltage output.
2 digit output terminals; one supporting 0.01KHz~100KHz
square signal rapid pulse output.
2 relay output terminal
Extension capacity: 1 digit output terminal.
LED display Can display 5 parameters
Display and
Keypad
Operation Protection
function
Motor short-circuit detection at power-on, input/output
phase loss protection, overcurrent protection, overvoltage
protection, undervoltage protection, overheat protection and
overload protection etc.
Installation
location
Indoor, without direct sunlight, no dust, corrosive gas,
combustible gas, oil smoke, vapor, drip or salt etc.
Altitude level Lower than 2000m (de-rate if altitude is higher than 2000m).
Ambient
temperature
-10℃-+40℃ (de-rate if the ambient temperature is between
40 and 50 ).℃ ℃
Humidity <95%RH, without condensing.
Vibration <5.9m/s2 (0.6g)
Environment
Storage
temperature -20℃- +60℃
Protection grade IP20
Cooling method Forced air cooling
2.5 Physical Appearance and Main Structure Diagram
Fig 2.5-1 Physical appearance and main structure diagram

VD520 Series Inverter User Manual Product Information
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2.6 Product Appearance and Installation Dimension
W
A D
H
B
Fig 2.6-1 Schematic diagram for physical dimensions and mounting dimensions (below 7.5kW)
W
A D
H
B
H1
Fig 2.6-2 Schematic diagram for physical dimensions and mounting dimensions
(11kW~110kW)
H
B
W
A
D
H1
W
H
D
Fig 2.6-3 Schematic diagram for physical dimensions and mounting dimensions (up 132 kW)

Product Information VD520 Series Inverter User Manual
- 12 -
Table 2-3 Physical dimensions and installation hole (mm)
Mounting Hole
(mm) Physical Dimensions ( mm)
Diameter
of
Mounting
Hole (mm)
Weight
(kg)
Model
A B H H1 W D d kg
Single-phase 220V, 50/60Hz
VD300-2S-0.7GB
VD300-2S-1.5GB
VD300-2S-2.2GB
106.5 175 185 / 118 169 4.5 1.8
VD300-2S-3.7GB
VD300-2S-5.5GB
148 235 247 / 160 191 5.5 3.0
Three-phase 380V, 50/60Hz
VD300-4T-0.7GB
VD300-4T-1.5GB
VD300-4T-2.2GB
VD300-4T-3.7GB/5.5PB
106.5 175 185 / 118 169 4.5 1.8
VD300-4T-5.5GB/7.5PB
VD300-4T-7.5GB/11PB
148 235 247 / 160 191 5.5 3.0
VD300-4T-11GB/15PB
VD300-4T-15GB/18.5PB
120 308 320 284 190 196.5 6.5 7.5
VD300-4T-18.5G/22P
VD300-4T-22G/30P
VD300-4T-30G/37P
VD300-4T-37G/45P
180 396 412 372 260 216.5 8 13.5
VD300-4T-45G/55P
VD300-4T-55G/75P
VD300-4T-75G/90P
260 530 550 510 377 300 8 30
VD300-4T-90G/110P
VD300-4T-110G/132P
350 670 690 640 450 330 9 55
VD300-4T-132G/160P
VD300-4T-160G/185P
350 850 870 810 450 330 9 60
VD300-4T-185G/200P
VD300-4T-200G/220P
400 875 900
1350
840 530 370 11 85
VD300-4T-220G/250P 500 970 1000 940 700 395 13 125

VD520 Series Inverter User Manual Product Information
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VD300-4T-250G/280P
VD300-4T-280G/315P
VD300-4T-315G/355P
1450
VD300-4T-355G/400P
VD300-4T-400G/450P
VD300-4T-450G/500P
VD300-4T-500G/560P
560 1270
1300
1750
1240 800 415 13 200
2.7 Physical Dimensions Of External Keyboard
88
155 148
18
1378
Physical dimensions of keyboard Physical dimensions of keyboard holder
Fig 2.7-1 External keyboard and holder dimension
66.5
109.5
78.5
148.5
The mounting hole size of the card mounted The mounting hole size of the card mounted
when the keyboard does not add the tray when the keyboard add the tray
Fig 2.7-2 External keyboard and holder mounting dimension
● This inverter keyboard can be directly connected.
● A holder can be added to keyboard, but need to order separately.
70
114
66
109
14
40 50
82
17
17.5 25.5
2.5
2-M4

Product Information VD520 Series Inverter User Manual
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2.8 Braking Unit Model Selection Guide
2.8.1 Resistor Value Selection
The regenerative energy of the motor is almost all consumed in the braking resistor when braking.
According to formula U*U/R=Pb
In formula U---braking voltage when system is stability braking (different system with different value,
for AC380V system, it generally take DC700V)
Pb----braking power
2.8.2 Braking Resistor Power Selection
Theoretically, braking resistor power is the same with braking power, but in consideration that the
de-rating is 70%,
According to formula: 0.7Pr=Pb*D
Pr----power of resistor
D----braking frequency (percentage of regenerating process account for the complete process)
Elevator----20%~30%
Uncoiling and recoiling----20%~30%
Centrifuge----50%~60%
Accidental braking loading----5%
General take 10%
Table 2-4 Inverter braking unit selection
Model
Recommend
Power Braking
Resistor
Recommend
Resistance
Braking
Resistor
Braking
Unit Remarks
Single-phase 220V 50/60Hz
VD300-2S-0.7GB 80W ≥150Ω
VD300-2S-1.5GB 100W ≥100Ω
VD300-2S-2.2GB 100W ≥70Ω
VD300-2S-3.7GB 200W ≥40Ω
VD300-2S-5.5GB 300W ≥25Ω
Internal No special
instructions
Three-phase 380V 50/60Hz
VD300-4T-0.7GB 150W ≥300Ω
VD300-4T-1.5GB 150W ≥220Ω
VD300-4T-2.2GB 250W ≥200Ω
VD300-4T-3.7GB/5.5PB 300W ≥130Ω
VD300-4T-5.5GB/7.5PB 400W ≥90Ω
VD300-4T-7.5GB/11PB 500W ≥65Ω
VD300-4T-11GB/15PB 800W ≥43Ω
VD300-4T-15GB/18.5PB 1000W ≥32Ω
Internal No special
instructions
VD300-4T-18.5G/22P 3.7kW ≥31.5Ω External VDBU-4T-70G

VD520 Series Inverter User Manual Product Information
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VD300-4T-22G/30P 4.4kW ≥26.5Ω
VD300-4T-30G/37P 6kW ≥19.4Ω
VD300-4T-37G/45P 7.4kW ≥15.8Ω
VD300-4T-45G/55P 9kW ≥13Ω
VD300-4T-55G/75P 11kW ≥10.6Ω
VD300-4T-75G/90P 15kW ≥7.8Ω
External VDBU-4T-110G
VD300-4T-90G/110P 18kW ≥6.5Ω
VD300-4T-110G/132P 22kW ≥5.3Ω
External VDBU-4T-160G
VD300-4T-132G/160P 26.4kW ≥4.4Ω
VD300-4T-160G/185P 32kW ≥3.6Ω
External VDBU-4T-250G
VD300-4T-185G/200P 37kW ≥3.2Ω
VD300-4T-200G/220P 40kW ≥2.9Ω
VD300-4T-220G/250P 44kW ≥2.7Ω
VD300-4T-250G/280P 50kW ≥2.3Ω
External VDBU-4T-330G
VD300-4T-280G/315P 56kW ≥2.1Ω
VD300-4T-315G/355P 63kW ≥1.9Ω
VD300-4T-355G/400P 70kW ≥1.7Ω
VD300-4T-400G/450P 80kW ≥1.5Ω
External VDBU-4T-600G
VD300-4T-450G/500P 90kW ≥1.3Ω
VD300-4T-500G/560P 100kW ≥1.2Ω
External VDBU-4T-800G
● Table 2-4 is a guiding data, user can select different resistor value and power according to actual
situation.
● Selection of braking resistor is based on the motor generation power in actual application system,
it is related with system inertia, deceleration time, potential load energy, it is decided by user’s actual
situation.
● The greater the inertia of system, the required speed deceleration is shorter, the braking is more
frequent, so the braking resistor require a bigger power small value of resistor.
2.9 Routine Repair and Maintenance of Inverter
The influence of the ambient temperature, humidity, dust and vibration will cause the aging of the
devices in the inverter, which may cause potential fault of the inverter or reduce the service life of the
inverter. Therefore, it is necessary to carry out routine and periodical maintenance on the inverter, it
must be regularly maintenance for every 3~6 months.

Product Information VD520 Series Inverter User Manual
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2.9.1 Daily Round Check
Daily Inspection Projects
● If the heat from motor and the run inverter is higher than normal temperature
● If any abnormal noise or vibration from motor and the run inverter
● If current value of inverter loading current is as normal level
● If inverter cooling fan is run as normal, if it is stained with oil dirt and speed getting low.
● If the color of main control circuit terminal changed or rusted, if any arc discharge between input
and output phases.
● If the enclosure of inverter is overheat, if inverter inside is filled with dirt or metal powder, or oil dirt
on circuit board or conductive copper bar etc.
● If inverter is installed in cabinet, good ventilation is kept, cooling fan is run as normal.
2.9.2 Regular Maintenance
Regular maintenance item
● Clear inverter cooling air duct regularly, once the speed of cooling fan inside cabinet getting low or
stop, then replace it on time.
● Check if the connecting screws in main circuit and control circuit is loosed, any signs of overheat
on connecting copper bar inside inverter.
● Check if the insulation performance of motor and main circuit cable, any insulation damage of main
circuit and control circuit, especially the surface contacting with metal has cut.
● Non-professional staff or untrained operator cannot do maintenance or change device of the
inverter, failure to comply will result in personal hurt or damage the device.
● User is required to do insulation test on inverter. While testing insulation resistor of motor and
cable, make sure to disconnect inverter in advance. Otherwise the inverter can be damaged.
● If user insist to do insulation test on inverter, make sure all the input output terminal of main circuit
(L, N, R, S, T, U, V, W, P1, P+, PB, P-) are reliably grounded, use a 500V Meg Ohm Meter to check.
● Do not use a 500V meg ohm meter to check on control circuit terminal, otherwise it can damage
inverter.
2.9.3 Inverter Wearing Part Replacement
Some device inside inverter can get wearing or aged after using for a certain period, in order to
ensure inverter operate reliably, it is necessary to do preventive maintenance, when necessary some
device need to be replaced.
The wearing part of inverter mainly as cooling fan, filtering big capacity electrolytic capacitor. Those
life is closely related with its applicant environment and maintain condition.
● In general condition the inverter cooling fan need to replace for every 2-3 years.
● In general condition the big capacity electrolytic capacitor of inverter need to replace for every 4-5
years.
2.9.4 Inverter Storage