JACT AT500 Series User manual

AT500 User's Manual
1
Preface
Thank you for purchasing the AT500 series inverter developed by Wuxi JACT
Electric Co., Ltd.
The AT500 series inverter is a general-purpose high-performance current vector
control inverter. It can implement the control of asynchronous motor. It is used to
drive various automation production equipment involving textile, paper-making,
wire drawing, machine tool, packing, food, fan and pump.
This manual describes the correct use of the AT500 series inverter, including
selection, parameter setting, commissioning, maintenance & inspection. Read and
understand the manual before use and forward the manual to the end user.
Note matter
The drawings presented in this instructions are sometimes
shown without covers or protective guards.Always replace the equipment’s
cover or protective guard as specified first,and the operate the products in
accordance with the instructions.
The drawings presented in the instructions are typical examples
and may not match the product you received.
These instructions are subject to change due to product
improvement,specification modification, specification modification.
If you want to order the manual due to loss or damage, please
contact our company agents in each region or our company customer
service center directly.
If there is still any problem during using the product, please
contact our company customer service center directly.
Our Service Hotline:[phone]
Fax:[phone]
24-hour technical service line:13306170378 13306170877

AT500 User's Manual
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Contents
Preface.......................................................................................................... 1
Chapter 1 Safety information and precautions.........................................3
1.1 Security matters............................................................................... 3
1.2 Notes................................................................................................ 5
Chapter 2 Product information..................................................................8
2.1 Naming rules....................................................................................8
2.2 Nameplate........................................................................................ 8
2.3 AT500 series inverter...................................................................... 8
2.4 Product description of each part.................................................... 10
2.5 Technical Specifications................................................................10
2.6 Appearance and installation dimensions....................................... 13
2.7 Appearance and installation size keyboard....................................16
2.8 Appearance and hole size keyboard tray....................................... 16
Chapter 3 Mechanical and electrical installation................................... 17
3.1 Mechanical Installation..................................................................17
3.2 Products cover disassembly...........................................................18
3.3 Electrical Installation..................................................................... 19
3.4 Selection of Braking Unit and Braking Resistor........................... 21
3.5 Wiring of inverter Control Circuit.................................................23
Chapter 4 Operating and display.............................................................29
4.1 Operation and display interface..................................................... 29
4.2 Viewing and Modifying Function Codes...................................... 30
4.3 Selecting menu mode.....................................................................31
Chapter5 Function Parameter List..........................................................32
Chapter6 Parameter Description.......................................................... 66
Group F0: Basic Function....................................................................66
Group F1: Motor parameters............................................................... 72
Group F2: Input Terminal....................................................................73
Group F3: Output Terminals............................................................... 81
Group F4: Auxiliary Functions............................................................85
Group F5: Vector Control Parameters.................................................93
Group F6: V/F Control Parameters......................................................95
Group F7: Start/Stop Control...............................................................97
Group F8: Operation Panel and Display............................................101
Group F9: Fault and Protection......................................................... 103
Group FA: Process Control PID Function.........................................109
Group FB: Swing Frequency, Fixed Length,Count and Torque Control
Parameters........................................................................113
Group FC: Multi-Reference and Simple PLC Function Parameters. 117
Group FD: User-defined Parameters................................................ .119
Group FE: Quick Menu parameters...................................................120
Group P0: Analog four points offset parameters...............................121
Group P1: Analog calibration parameters......................................... 123
Group H0: Monitoring Parameters.................................................... 124
Chapter 7 Maintenance and Troubleshooting...................................... 126
7.1 Routine Repair and Maintenance of the AT500.......................... 126
7.2 Warranty Agreement................................................................... 125
7.3 Faults and Solutions.....................................................................127
7.4 Common Faults and Solutions.....................................................131

AT500 User's Manual
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Chapter 1 Safety information and precautions
Safety definition:
In this manual, Safety cautions are divided into two types:
Danger: since not according to the requirements of the operating cause danger, may
result in serious injury or death.
Note:since not according to the requirements of the operating cause danger, may cause
moderate damage or minor injuries, and equipment damage.
Please users carefully reading this chapter and must according to the requirements of
safety cautions in this chapter to operate when you install, debug and maintain this
system. it is nothing to do with our company If appear any damage and loss due to
violate compasses operation.
1.1 Security matters
1.1.1 Before installation
Danger
●Found control system fill into water when unpacking,lack of
component or component parts damaged, please do not install!
●Packing list with real names do not match, please do not install！
Danger
● Handling should light , or damage the equipment of danger!
● Please don't use damaged or lack of parts inverter . A risk of injury!
● Don't use hand to touch control system’s components, it may cause
electrostatic damage!
1.1.2 During installation
Danger
●Please install in metal flame retardant objects; Away from the fuel. Or
it may cause a fire!
●Shall not turned the standing bolt of equipment components casually,
especially with red marking of bolt!
1.1.3 Wiring
Danger
●Please comply with the guidance of this manual, installing by the
professional electrical engineering staff , otherwise it will appear
unexpected danger！
●The power supply and the inverter should be separated, or it may cause

AT500 User's Manual
4
fire!
●Please confirm the power supply in zero energy state before
connection , or you will get an electric shock risk!
●Please according to the standard of inverter for correct standard
grounding, or you will get an electric shock risk!
Danger
●Don’t connected the power to the output terminals (U, V, W) the
inverter. Note terminals mark, do not take the wrong line! Otherwise it will
cause the damage!
●Ensure that the circuit match with EMC requirements and afety
standards.please reference manual Suggestions the wire line diameter . Or
you could accident!
●Don’t directly connect braking resistance by dc bus (+), (-) between
terminals. Otherwise it will cause fire!
●Encoder must use the shielded wire, and shielding layer must ensure
that the single-ended reliable grounding!
1.1.4 Before energizing
Danger
● Please confirm the input power supply voltage grade; Please confirm
the connection between the power input terminals (R, S, T) and output
terminals (U, V, W) are correct; And Be aware of any short in the outside
circuit connected to the inverter, whether the line is tighten, or it will cause
the damage to the inverter!
● Any part of the inverter need not to carry on pressure test, the factory
has done this before leaving factory . Otherwise it will cause accidents！
Danger
● The inverter must be covered before power on. Or it may cause a
shock!
● All peripheral accessories of wiring must abide by this manual
guidance and connect according to the manual provided circuit connection
method. Otherwise it will cause accident!
1.1.5 After energizing
Danger
● After power up don't open cover plate. Or it can get an electric shock !
● Don't use wet hand to touch inverter and its peripheral circuit. Or it
can get an electric shock !
● Don’t touch any of the inverter’s input and output terminals. Or it can

AT500 User's Manual
5
get an electric shock!
●At the beginning of the power on,the automatic system of the inverter
will check the high voltage outside, at this time,you should never touch the U,
V, W terminals or motor terminals of inverter, or it will get an electric shock!
Danger
● If the motor parameters need to be identified, please pay attention to
the danger when the motor rotating. Or it may cause accident!
● Please don’t change inverter’s manufacturer parameters optionally.
Otherwise it may cause equipment damaged!
1.1.6 Running
Danger
● Please don’t touch the cooling fans and the discharge resistance in
order to test temperature. Or it may cause burns!
●Amateur technicians don’t test signals when inverter running. Or it may
cause a personal injury or damage to the equipment.
Danger
● Avoiding anything fall into the equipment when the inverter running .
Or it will cause the equipment damaged.
● Don’t use contactor to control the inverter. Or it will cause equipment
damaged.
1.1.7 Maintenance
Danger
●Please don’t repair or maintain the equipment. Or it can get an electric
shock!
●Confirm in less than 36V voltage inverter to implementation in the
maintenance and repair, when the power to fifteen minutes shall prevail.
Otherwise the remnants of the charge to the capacitance will cause damage!
●Without professional training personnel don’t repair and maintain
inverter. Otherwise it will cause personal injury or damage to the equipment.
●Please set parameters value after changing the inverter , all the
pluggable must be inserted after power off.
1.2 Notes
1.2.1 Motor insulation inspection
The motor insulation must be inspected when motor for the first time used or unused for a
long time, in case the effectiveness of the winding insulation to damage the inverter. Motor
attachment must separate from inverter when insulated inspection, suggested the 500 V voltage

AT500 User's Manual
6
type megameter,guarantee the insulation resistance not less than 5 MΩ.
1.2.2 Motor of the thermal protection
If choose motor and converter does not match the rated capacity, especially the rated
power greater than motor inverter power rating, be sure to adjust the inverter motor protection
in related parameters value or in motor with thermal relay to before to motor protection.
1.2.3 Power frequency above operation
This inverter can provide 0 Hz ~ 600 Hz output frequency. If the customer needs to be
in frequency 50 Hz above operation, please consider the strength of the mechanical device.
1.2.4 The vibration of mechanical device
inverter may meet load machinery’s mechanical resonance point in some output
frequency place,it can be set hopping frequency and parameters within the inverter to avoid.
1.2.5 Motor fever and noise
Because the inverter’s output voltage is PWM waves, contain certain harmonic ,
therefore, the rise of temperature of the motor, noise and vibration frequency will run little
increase.
1.2.6 When therer are pressure sensitive devices or capacitance to improve the power
factor on the output side
inverter is PWM waves, the output side such as the capacitor with improving electrical
power factor or the lightning protection with pressure sensitive resistance, it easy cause
instantaneous inverter over current even damage inverter, please do not use.
1.2.7 The input and output terminal contactor of switching element etc
If contactor is between the power and inverter input side , it is not allowed to use this
contact device control inverter to the rev. stop. It need to use this contractor to control the
inverter rev. Stopping , interval an hour at least. Frequent charge-discharge is easily reduce
the inverter of the capacito the service lifer. If the output and motor with contact between the
switch device, shall ensure that no output inverter in the hige operation, or it easily cause
inverter module damaged.
1.2.8 Rated voltage value the use of outside
Not suitable for user manual in the provisions of the voltage range allowed outside use
AT series inverter, it easily cause the inverter device damaged.If it necessary, please use the
corresponding or step down device to deal with variable pressure.
1.2.9 Change the three-phase input into the two phase input
Don’t change the three-phase inverter into the two phase in AT series. Otherwise it will
lead to malfunction or damage the inverter.
1.2.10 Lightning shock protection
This series of inverter is equipped with a lightning over current protection device,having
certain ability of self-protection for indirect lightning.In the frequent lightning place,please
install the protective devices at the front end of the inverter.
1.2.11 The altitude and derating using
At an altitude of more than 1000m area, because thin air cause the inverter cooling effect
becoming poor,so it is necessary to derate use. Please consult our company for technique in
this situation.

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1.2.12 Some special usage
If the customer was using when required to book recommendations provided by methods
other than when wiring diagram, such as dc bus, etc, please consult our company.
1.2.13 Converter scrap note
The main loop of the electrolytic capacitor and printed circuit boards electrolytic
capacitors on incineration can explode. Plastic incinerator will produce toxic gases. Please as
industrial waste processing.
1.2.14 Adapter motor
1）Standard adapter electric quadrupole squirrel-cage asynchronous induction motor. If
the motor please press the motor rated current selection of inverter. If you need to drive
permanent magnet synchronous motor of the occasion, please consult our company.
2）A variable frequency motor cooling fan and rotor shaft is coaxially connected, speed is
reduced when the fan cooling effect is reduced, therefore, the motor overheat the occasion
should be equipped with strong exhaust fan or replacement for variable frequency motor.
3）Converter has a built-in adaptation motor standard parameters, according to the actual
situation it is necessary to motor parameter self identification or modify the default values so
as to accord with the actual value, otherwise it will affect the running effect and protection
performance.
4）Because the cable or motor internal short circuit can cause inverter alarm, even frying
machine. Therefore, please first for the initial installation of the motor and cable insulation
short test, routine maintenance is often required for this test. Note, doing this test must be
tested part of inverter and disconnect all.

AT500 User's Manual
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Chapter 2 Product information
2.1 Naming rules
DR300 - T 3 - 011 G / 015 P
Inverter series
Code Voltage level
T
S
Three-Phase
Single-Phase
2
3
6
11
220V
380V
660V
1140V
G
P
Inverter type
Universal type
Fan pump type
7R5
011
015
018
022
030
Adapter motor power (KW)
7.5
11
15
18.5
22
30
Code Voltage level
Code
Code
Figure 2.1 Naming rules
2.2 Nameplate
Figure 2.2 inverter brand of the data
2.3 AT500 series inverter
Table 2-1 AT500 series inverter
inverter types
Power supply
capacity
(KVA)
Input current
(A)
Rated output
current(A) G/P
Adapter motor
（power）(horsepower)
(KW) (HP)
Single-phase power supply: 220 v,50/60Hz
AT500-S2-0R4GB
1
5.4
2.3
0.4
0.5
AT500-S2-0R7GB
1.5
8.2
4
0.75
1
AT500-S2-1R5GB
3
14
7
1.5
2
AT500-S2-2R2GB
4
23
9.6
2.2
3
Three-phase power supply: 380V,50/60Hz
AT500

AT500 User's Manual
9
inverter types
Power supply
capacity
(KVA)
Input current
(A)
Rated output
current(A) G/P
Adapter motor
（power）(horsepower)
(KW) (HP)
AT500-T3-0R7G
1.5
3.4
2.1
0.75
1
AT500-T3-1R5G
3
5
3.8
1.5
2
AT500-T3-2R2G
4
5.8
5.1
2.2
3
AT500-T3-4R0G
5.9
10.5
9
3.7
5
AT500-T3-5R5G
8.9
14.6
13
5.5
7.5
AT500-T3-7R5G
11
20.5
17
7.5
10
AT500-T3-011G
17
26
25
11
15
AT500-T3-015G
21
35
32
15
20
AT500-T3-018G
24
38.5
37
18.5
25
AT500-T3-022G
30
46.5
45
22
30
AT500-T3-030G
40
62
60
30
40
AT500-T3-037G
57
76
75
37
50
AT500-T3-045G
69
92
91
45
60
AT500-T3-055G
85
113
112
55
75
AT500-T3-075G
114
157
150
75
100
AT500-T3-090G
134
180
176
90
125
AT500-T3-110G
160
214
210
110
150
AT500-T3-132G
192
256
253
132
200
AT500-T3-160G
231
307
304
160
210
AT500-T3-200G
250
385
377
200
270
AT500-T3-220G
280
430
426
220
300
AT500-T3-250G
355
468
465
250
335
AT500-T3-280G
396
525
520
280
380
AT500-T3-315G
445
590
585
315
420
AT500-T3-355G
500
665
650
355
470
AT500-T3-400G
565
785
725
400
530
AT500-T3-450G
630
883
820
450
600

AT500 User's Manual
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2.4 Product description of each part
下面盖
导轨卡块
（仅2.2KW 以下有）
外壳
变频器铭牌
功率端子
控制端子
键盘
风扇 风扇罩
公司标签
Figure 2.3 Components of AT500 series inverter(plastic housing)
功率端子
控制端子
变频器铭牌
键盘
风扇
外壳
面壳
公司标签
Figure 2.4 Components of AT500 series inverter(sheet metal housing)
2.5 Technical Specifications
Table 2-2 Technical specifications of the AT500
Project
Specification
Basic
functions
Maximum
frequency
320Hz
Fan
Fan cover
Key board
Company label
Lower cover
Control terminal
Shell
inverter
nameplat
Power
terminal
Rail card block
Limited to the following 2.2kw
Power terminal
Fan
Key board
Company label
Control terminal
inverter
nameplate
Shell
Surface of the shell

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Carrier
frequency
0.5kHz~16.0kHz；Depending on the load characteristics,and
automatically adjust the carrier frequency.
Input frequency
resolution
Digital set:0.01Hz
Simulation set:The highest frequency×0.025%
Control mode
V/F Control,SVC,FVC
Startup torque
150%
Speed range
1:100(SVC)
1:1000(FVC)
Speed stability
accuracy
±0.5%(SVC)
±0.02%(FVC)
Overload
capacity
G type machine: 150%rated current 60s,180%rated current 3s
P type machine: 120% rated current 60s,150%rated current 3s
Torque boost
Automatic torque boost；Manual torque boost 0.1%~30.0%
V/F curve
Straight line V/F,Multi-point V/F,N-th power V/F
Ramp mode
• Straight-line ramp
• S-curve ramp
Four groups of acceleration/deceleration time with the range
of 0.0–6500.0s
DC braking
DC braking frequency: 0.00 Hz to maximum frequency
Braking time: 0.0–100.0s
Braking action current value: 0.0%~100.0%
JOG control
JOG frequency range: 0.00–50.00 Hz
JOG acceleration/deceleration time: 0.0–6500.0s
Onboard
multiple
preset speeds
It implements up to 16 speeds via the simple PLC function or
combination of DI terminal states.
Onboard PID
It realizes process-controlled closed loop control system
easily.
Auto voltage
regulation
(AVR)
It can keep constant output voltage automatically when the
mains voltage changes.
Overvoltage/
Overcurrent stall
control
The current and voltage are limited automatically during
the running process so as to avoid frequent tripping due to
overvoltage/overcurrent.
Fast current
limit function
Minimize the over-current fault,and protect the normal
operation of the inverter.
Torque limit and
control
It can limit the torque automatically and prevent frequent
over current tripping during the running process.
Torque control can be implemented in the CLVC mode.
Individuali-
zed
functions
High
performance
Control of asynchronous motor and synchronous motor are
implemented through the high-performance current vector
control technology.
Power dip ride
through
The load feedback energy compensates the voltage
reduction so that the inverter can continue to run for a short
time.
Timing control
Time range: 0.0–6500.0 minutes

AT500 User's Manual
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RS485 bus
support
Modbus-RTU protocol
Running
Running
command
source
• Operation panel
• Control terminals
• Serial communication port
You can perform switch over between these sources in
various ways.
Frequency
source
There are a total of 13 frequency sources, such as digital
setting, analog voltage setting, analog current setting, pulse
setting and serial communication port setting,variety of
speed PLC, PID.
You can perform switch over between these sources in
various ways.
Auxiliary
frequency
source
There are 13 auxiliary frequency sources. It can implement
fine tuning of auxiliary frequency and frequency synthesis.
Input
terminals
5 digital input (DI) terminals, X5 supports up to 100 kHz
high-speed pulse input;
2 analog input (AI) terminals, A1 only supports 0–10 V
voltage input and A2 supports 0–10 V voltage input or 4–20
mA current input.
Output
terminals
1 high-speed pulse output terminal (open-collector) that
supports 0–100 kHz square wave signal output
1 digital output (DO) terminal
2relay output terminals(One is factory default, the other is
optional)
2 analog output (AO) terminals that supports 0–20 mA
current output or 0–10 V voltage output.
Display and
keyboard
LED display
Display parameters (three display modes: Basic Mode,
Quick Menu mode, non-factory value mode).
Protection
mode
Motor short-circuit detection at power-on, input/output
phase loss protection, over current protection, over voltage
protection, under voltage protection, overheat protection
and overload protection.
Optional parts
Braking unit, I/O extension card, RS485 communication
card, PROFIBUS-DP communication card, differential
input PG card, OC input PG card, sin/cos PG card.
Environme-
nt
Installation
location
Indoor, free from direct sunlight, dust, corrosive gas,
combustible gas, oil smoke, vapour, drip or salt.
Altitude
Lower than 1000 m
Ambient
temperature
-10°C to +40°C (de-rated if the ambient temperature is
between 40°C and 50°C).
Humidity
Less than 95%RH, without condensing
Vibration
Less than 5.9 m/s2 (0.6 g)
Storage
temperature
－20℃~＋60℃

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2.6 Appearance and installation dimensions(mm)
2.6.1 Wall-mounted mounting dimensions
W1
W
HH1
D1
D
Figure2-5 Molded case circuit breaker mounting dimensions
W1
W
H
H1
D1
D
Figure2-6 Sheet metal mounting dimensions
The size of installation holes
Table 2-3 The size of AT500 installation holes（mm）
Model
Mounting
holes locations
Dimensions
Diam
eter
of
moun
ting
hole
W1
H1
H
W
D1
D
AT500-S2-0R4GB
88.4
168.4
180
100
152
159
φ5.5
AT500-S2-0R7GB
AT500-S2-1R5GB
AT500-S2-2R2GB

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14
AT500-T3-0R7G
AT500-T3-1R5G
AT500-T3-2R2G
AT500-T3-4R0G
118.4
224.5
236
130
163.5
170.5
φ5.5
AT500-T3-5R5G
AT500-T3-7R5G
141
243
260
155
175
182
φ7
AT500-T3-011G
AT500-T3-015G
190
273.5
291.
5
197
175
182
φ6
AT500-T3-018G
AT500-T3-022G
AT500-T3-030G
220
392
405
253
180
187
φ7
AT500-T3-037G
AT500-T3-045G
200
530
550
310
259
266
φ10
AT500-T3-055G
AT500-T3-075G
290
576
600
350
236
245
φ12
AT500-T3-090G
380
751
776
495
290
297
φ12
AT500-T3-110G
AT500-T3-132G
AT500-T3-160G
436
1024
1050
550
405
412
φ14
AT500-T3-200G
AT500-T3-220G
550
1147
1180
688
400
407
φ14
AT500-T3-250G
AT500-T3-280G
AT500-T3-315G
700
1272
1305
840
420
427
φ18
AT500-T3-355G
AT500-T3-400G
AT500-T3-450G
2.6.2 Cabinet mounting dimensions
控 制
用底部螺
Figure2-7 Installation diagram
Control cabinet back
In the bottle of the screw

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Figure2-8 Cabinet mounting dimensions
Model
L
L1
W
W1
H
H1
φD
AT500-T3-090G
1050
1005
495
420
290
215
φ10
AT500-T3-110G
AT500-T3-132G
AT500-T3-160G
1370
1340
555
460
402
320
φ12
AT500-T3-200G
AT500-T3-220G
1540
1490
693
580
400
300
φ12
AT500-T3-250G
AT500-T3-280G
AT500-T3-315G
1775
1710
845
730
420
300
φ12
AT500-T3-355G
AT500-T3-400G
AT500-T3-450G

AT500 User's Manual
16
2.7 Appearance and installation size keyboard
60 14.3
21.3
96
60.5
38.85.5
29.3
Figure 2.9Appearance and installation size keyboard
2.8 Appearance and hole size keyboard tray
2-R12
键盘托盘尺寸 托盘开孔尺寸
（也可开方孔 115mm*67mm）
121.2
74.2 15.8
115
67
101.9
R12.5
2-R5
Figure 2.10 Keyboard tray appearance and hole size map

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17
Chapter 3 Mechanical and electrical installation
3.1 Mechanical Installation
3.1.1 Installation Environment
1)Environmental temperature: the ambient temperature has a great influence, should
always keep the environment temperature under the inverter’s allowed temperature range (-10
to 50 Degrees Celsius).
2)When inverter installed in flame retardant surface, it need to have enough space,
because when inverter working, it is easily to produce a lot of heat and screw vertically on the
installation bearings.
3)Please install in the place is not easy to vibration which should be no more than 0.6
g,special attention away from the punch equipment.
4) Avoid installed in direct sunlight, moisture, drops a place.
5) Avoid installed in the air with corrosive;flammable or explosive gas places.
6) Avoid installed in place of greasy dirt, dust, metal dust.
AT500
隔热导流板
AT500
Figure 3.1 AT500 inverter installation diagram
Hot air
Cold air
It should be installed vertically upward
Insulation guide plate
AT500
AT500
AT500

AT500 User's Manual
18
Table 3-1 Installation clearance requirements on the AT500 series inverters of different
power classes
Clearance Requirements
Clearance Requirements
0.75KW-22KW
A>10mm
B>100mm
30KW-37KW
A>50mm
B>200mm
45KW-75KW
A>50mm
B>200mm
90KW-630KW
A>50mm
B>300mm
Description: A Size can not be considered when the inverter power is not more than
22KW. A should be longer than 50 mm when the power is higher than 22KW.
Description: Please install the insulation baffle icon when the inverter is installed
vertically upward.
The AT500 series inverter dissipates heat from the bottom to the top. When multiple
inverters are required to work together, install them side by side.
For application installing multiple inverters, if one row of inverters need to be installed
above another row, install an insulation guide plate to prevent inverters in the lower row from
heating those in the upper row and causing faults.
3.2 Removal of the Front Cover of the AT500
挂钩
1.左右对称向内侧用力
压挂钩使挂钩松脱
2.抓紧盖板下端并
往上旋转抽出
Figure 3.2 Removal of the front cover of the AT500 (plastic housing)
2.抓紧盖板下端并
往上旋转抽出
1.用螺丝刀卸下 2颗
面板上的螺钉
Figure 3.3 Removal of the front cover of the AT500 (sheet metal housing)
2. Catch the edge of
the cover and lift it
1. Press inward symmetrically to
disconnect the hook from the hook
slot
2. Catch the edge of
the cover and lift it
1. Loosen the 2
screws

AT500 User's Manual
19
3.3 Electrical Installation
3.3.1 Peripheral Electrical Devices
Figure 3.4 Peripheral Electrical Devices
●Do not install capacitors or surge suppressor in the output side of the inverter , this will
lead to a breakdown or cause capacitance and the damaged of the surge suppressor.
●Inputs/Outputs (main circuit) of the inverter contain harmonics, which may interfere
with the communication device connected to the inverter. Therefore, install an anti-interference
filter to minimize the interference.
● The details of the peripheral devices and options refer to the selection manual of
peripheral equipment.
3.3.2 Description of Peripheral Electrical Devices
Table 3-2 Description of peripheral electrical devices
Part
Function Description
MCCB
Interrupt the power supply when over current occurs on downstream devices
Start and stop the inverter.
Three-phase AC power supply
Moulded case circuit breaker
(MCCB) or earth leakage circuit
breaker
Electromagnetic contactor
To guarantee safety, use an electromagnetic contactor.
Do not use it to start or stop the inverter because such
operation reduces the service life of the inverter
Select a proper breaker to resist large in-rush current
that flows into the inverter at power-on
Use within the allowable power supply specification
of the inverter
Ground
Noise filter on input side
Reduce the
electromagnetic
interference on
the input side
AC input reactor
Suppress the
high order
harmonic to
improve the
power factor
Motor
Ground
Braking resistor
Braking unit
Reliably ground the motor and the
inverter to prevent electric shock
AC output
reactor
AT500

AT500 User's Manual
20
Contactor
Do not start and stop the inverter frequently by switching the contactor on and
off (less than twice per minute) nor use it to directly start the inverter.
AC input
reactor
• Improve the power factor of the input side.
• Eliminate the higher harmonics of the input side effectively and prevent
other devices from being damaged due to distortion of the voltage waveform.
• Eliminate the input current unbalance due to unbalance between the power
phases.
EMC
Input filter
• Reduce the external conduction and radiation interference of the inverter.
• Decrease the conduction interference flowing from the power end to the
inverter and improve the anti-interference capacity of the inverter.
DC
reactor
• Improve the power factor of the input side.
• Improve the efficiency and thermal stability of the inverter.
• Eliminate the impact of higher harmonics of the inverter input side and
reduce the external conduction and radiation interference.
AC output
reactor
The output side of the inverter generally has much higher harmonics. When
the motor is far from the inverter, there is much distributed capacitance in the
circuit and certain harmonics may cause resonance in the circuit, bringing
about the following two impacts:
• Degrade the motor insulation performance and damage the motor in the long
run.
• Generate large leakage current and cause frequent inverter protection trips.
If the distance between the inverter and the motor is greater than 100 m,
install an AC output reactor.
3.3.3 Peripheral electrical components selection guidance
Table 3-3 AT500 inverter peripheral electrical components selection guidance
Converter model
Open space
(MCCB)
(A)
Recommen
-ded
contactorr
(A)
Recommend-
ed input side
The main
circuit
wires(mm2)
Recommende-
d output side
The main
circuit wires
(mm2)
Recommende-
d control
Return
conductor
(mm2)
AT500-S2-0R4GB
10
9
0.75
0.75
0.5
AT500-S2-0R7GB
16
12
0.75
0.75
0.5
AT500-S2-1R5GB
25
18
1.5
1.5
0.5
AT500-S2-2R2GB
32
25
2.5
2.5
0.5
AT500-T3-0R7G
6
9
0.75
0.75
0.5
AT500-T3-1R5G
10
9
0.75
0.75
0.5
AT500-T3-2R2G
10
9
0.75
0.75
0.5
AT500-T3-4R0G
16
12
1.5
1.5
0.5
AT500-T3-5R5G
20
18
2.5
2.5
0.75
AT500-T3-7R5G
32
25
4.0
4.0
0.75
AT500-T3-011G
40
32
4.0
4.0
0.75
AT500-T3-015G
50
38
6.0
6.0
0.75
AT500-T3-018G
50
40
10
10
1.0
AT500-T3-022G
63
50
10
10
1.0