K&R ACD320 Series User manual

ACD320 user manual Preface
Preface
This manual is helpful for type selecting, installation, parameter setting, site commissioning,
rubleshooting, and daily maintenance of the inverter. To guarantee safe operation of the inverter,
please read this manual thoroughly, and keep it handy for referance in the future..
First use this product:
For those users who use this product for the first time, should read this manual thoroughly.
If you have any question in the Function and Functional performance, please feel free to contact
our technical support personnel for assist.
Notice:
Before wiring, please make sure to cut off the power.
The electronic components in the inverter are sensitive to static, so please do not put
anything in the inverter, and do not touch the main circuit board.
After cutting off the AC power supply, if the indicator light still on, please do not
touch the circuit and any part in the inverter, beacause there still be high voltage in the
inverter which is very dangerous.
The terminals of inverter must be connected to the ground correctly.
The Input power line absolutely can not be connected to the Output terminal U/T1、
V/T2 and W/T3.
Application range of this manual:
This manual is applied to ACD320 Series Inverters of our company.

ACD320user manual Catalogue
Chapter 1 Safety information and use notice points................................... 1
1.1 Safety precautions
..........................................................................................
1
1.2 Use range
...........................................................................................................
2
1.3 Use notice points
.............................................................................................
2
1.4 Scrap notice points
.........................................................................................
3
Chapter 2 Type and specification of the inverter.........................................4
2.1 Incoming inverter inspect
.............................................................................
4
2.2 Type explanation
..............................................................................................
4
2.3 Nameplate explanation
..................................................................................
4
2.4 Series type explanation
.................................................................................
5
2.6 Out size
...............................................................................................................
8
2.7 Product technic index and specification
...............................................
11
Chapter 3 Installation and wiring....................................................................16
3.1 Installation ambient
......................................................................................
16
3.2 Electrical Installation
........................................................................................
17
3.3 BasicWiring Diagram
........................................................................................
20
3.4 Main Circuit Terminals andWiring
...................................................................
23
3.5 Control Terminals and Wiring
..........................................................................
24
3.6 EMC Issues
........................................................................................................
30
Chapter 4 Digital Keypad Operation.............................................................. 33
4.1 Description of the DigitalKeypad
.............................................................
33
4.2 Modify and Check the Function Codes
...................................................
34
4.3 How to View Status Parameters
...............................................................
35
4.4 Password Setting
..............................................................................................
35
4.5 Auto Tuning of Motor Parameters(Referto F1.11)
...............................
36
Chapter 5 Function parameters list............................................................... 38

ACD320user manual Catalogue
5.1 Symbol description
......................................................................................
38
5.2 Function parameter schedule graph
.......................................................
38
Chapter 6 Parameter Description................................................................54
6.1 F0 Basic Function Parameters
..................................................................
54
6.2 F1 Motor Parameters
...................................................................................
64
6.3 F2 Input and Output Terminal Function Parameters
..........................
69
6.4 F3 Human Machine Interface Parameters
.............................................
78
6.5 F4Application Function Parameters
........................................................
82
6.6 F5 Protection Parameters
..........................................................................
92
6.7 F6 Communication Parameters
................................................................
95
6.8 F7 Senior Function Parameters
................................................................
98
6.9 F8 Supplementary function Parameters 1
..........................................
103
6.10 F9 Supplementary function Parameters 2
........................................
106
Chapter 7 Fault Diagnosis and Countermeasures...................................109
7.1 Failure and countermeasure
...................................................................
109
7.2Fault and Countermeasures
....................................................................
114
7.3 Failure record lookup
................................................................................
125
7.4 Failure reset
.................................................................................................
125
Chapter 8 Maintenance................................................................................ 126
8.1 Routine maintenance
................................................................................
126
8.2 Inspection and replacement of damageable parts
..........................
126
8.3 Repair guarantee
........................................................................................
127
8.4 Storage
..........................................................................................................
127
Chapter 9 Appendix.......................................................................................... 129
Appendix 1 ACD320 series serial communication protocol
.................
129

ACD320user manual Catalogue
Appendix 2 All BrakingResistors & Braking Units Use in AC Drives
.................................................................................................................................
143
Appendix 3 Parameter illustration of the inverter specially used for
one driving one constant pressure water supply
....................................
144
Appendix 4 Example for one driving two constant pressure water
supply controlling card and water supply mode that one for use and
one for supplement（one driving two circularly running） .................. 147

ACD320 User Manual Safety information and use notice points
- -
1
Chapter 1 Safety information and use notice points
In order to ensure the safety of your personal and equipment, please read this chapter of
content conscientiously before using the inverter .
1.1 Safety precautions
There are three kinds of safety relevant warnings in this service manual.They are as
follows:
This symbol briefs on: if do not operate as request, the body injured or equipment
damaged may occur.
This symbol is briefed on useful information.
This symbol briefs on: if do not operate as request, death, severely injured or serious
property loss may occur.
(1) Forbid to connect U/T1、V/T2、W/T3 output end to AC power supply, otherwise cause the totally
damage of the inverter.
(2) Don’t make DC- and P2 or DC+ short-circuited, otherwise cause the inverter to be damaged.
(3) The inverter is forbidden to install on flammables, otherwise have the danger of fire.
(4) Don’t install it in the environment with explosive gas,otherwise have the risk of explosion.
(5) After connecting main loop, should carry on insulating treatment to bare wiring end , otherwise
have danger of getting an electric shock.
(6) If being connected to the power supply, don’t operate the inverter with moist hands, otherwise
have danger of getting an electric shock.
(7) The ground terminal of the inverter must be grounded well.
(8) Inverter being connected to power supply, please don’t open cover and carry on wiring, Can
connect the wire or the check only after closing power for 10 minutes.
(9) Only qualified personnel may carry on wiring and forbid leaving over any conductive thing in
machine, otherwise have danger of gentting an electric shock or causing damage of the inverter.
(10) inverter stored for 2 years, should be stepped up gradually with voltage regulator first while having
the electricity ,otherwise have danger of getting an electric shockor explosion.
(1) It is prohibited that conncet AC 220V signal to control ends except RA, RB, RC, TA, TB, TC,
otherwise have danger of damaging property.
(2) If the inverter is damaged or without all parts, please don’t install and operate it, otherwise have
danger of fire or cause personnel injury.
(3) In the process of installation, should choose a place where can lay up the inverter, otherwise have
danger of personnel injury or property damage while falling down.
Note
!
!

ACD320 User Manual Safety information and use notice points
- 2-
1.2 Use range
(1) This inverter is only suitable for three phases AC asynchronous motor in general
industrial field.
(2) When apply inverter to such equipments that arerelated much to the life, great
property, safety devices etc., please must handle cautiously and consult producer.
(3) This inverter belongs to the control device of general industrial motor, if used in
dangerous equipments, must consider the security safeguard procedures when the inverter
breaks down.
1.3 Use notice points
(1) ACD280 series inverter is voltage-type inverter, so temperature, noise and vibration
slightly increasing compared to power source running when using, belongs to normal
phenomenon.
(2) If need to run for a long time with constant torque of low-speed, must select motor
of frequency conversion. To use general asynchronous AC motor when running at a low
speed should control temperature of the motor or carry on heat dissipation measure forcedly,
so as not to burn the generator.
(3) Such mechanical devices such as gearbox and gear wheel need lubrication. After
running at a low speed for a long time, may be damaged because the lubrication result
become poor, so please take necessary measures in advance.
(4) When the motor running with frequency above specified, besides considering the
vibration, noise increase of the motor, must also conform speed range of the motor bearing
and the mechanical device.
(5) For hoist and great inertia load, the inverter would shut off frequently due to
over-current or over-voltage failure in order to guarantee normal work. At this time, should
consider to choose the proper brake package.
(6) Should switch on/off the inverter through terminal or other normal order channels. It
is prohibited that switch on/off the inverter frequently by using strong electric switch such as
magnetic control conductor, otherwise will cause the equipment damage.
(7) If need to install such switch as the magnetic control conductor, etc. between
inverter output and the motor, please guarantee the inverter is switched on/off without output,
otherwise may damage the inverter.
(8) The inverter may meet with mechanical resonance of the load within certain range
of frequency output, can set up jumping frequency to evade.
(9) Before using, should conform the voltage of the power is within the working voltage

ACD320 User Manual Safety information and use notice points
- 3-
ACD320
After wiring, short-circuit
U, V, W to measure
insulation resisitance.
range allowed, otherwise should vary voltage or order special inverter.
(10) In the condition of altitude above 1000 meters, should use the inverter in lower
volume, reduce output current by 10% of specified current after each 1500 meters height
increasing.
(11) Should make insulation check to the motor before using it for the first time or after
a long time placement. Please inspect with 500V voltage-type megohm meter according to
method shown as graph 1-1 and insulation resistance should not be smaller than 5MΩ,
otherwise inverter may be damaged.
(12) To forbid assembling capacitor for improving power factor or lightning proof
voltage-sensible resistance etc., otherwise will cause malfunction trip of the inverter or
damage of the parts, show as graph 1-2
Fig.1-1 motor insulation measure Fig.1-2 capacitor at output forbidden
1.4 Scrap notice points
When disposing scrap inverter and its parts, please note:
(1) The unit: please discard as industrial useless.
(2) Electrolytic capacitor: when burning the inverter electrolytic capacitor in it may
explode.
(3) Plastic: when plastic, rubber parts etc. in the inverter are burning, they may bring bad,
poisonous gas, so please be ready to safeguards.
ACD280
U
V
W
M
ACD320
Megohm meter
Grounding part
UVW
Motor

ACD320 User Manual Type and specification of the inverter
- -
4
Chapter 2 Type and specification of the inverter
2.1 Incoming inverter inspect
(1) Check if there is a damage during transportation and inverter itself has damage or
fall-off parts
(2) Check if parts presented in packing list are all ready.
(3) Please confirm rated data of the inverter is in line with your order requirement.
Our product is guaranteed by strict quality system during manufacturing, packing,
transportation etc,. please contact our company or local agent rapidly if some careless omission
or mistake arise, we’ll deal with it as soon as possible.
2.2 Type explanation
Fig.2-1 type explanation
2.3 Nameplate explanation
Nameplate presented as figure 2-2 with type and rating data at the bottom of inverter right
side
Fig. 2-2 Nameplate

ACD320user manual Type and specification of the inverter
- 5-
2.4 Series type explanation
Table 2-1 series type explanation
Inverter type
Input
voltage(V)
Rated power
(KVA)
Rated input
current(A)
Rated output
current(A)
Adapted
motor(KW)
ACD320-2T0.4
Three phase
220V range:
-15%～20%
1.0 5.4 2.3 0.4
ACD320-2S0.4
ACD320-2T0.7 1.5 8.2 4.0 0.75
ACD320-2S0.7
ACD320-2T1.5 3.0 14.0 7.0 1.5
ACD320-2S1.5
ACD320-2T2.2 4.0 23.0 9.6 2.2
ACD320-2S2.2
ACD320-2S3.7 5.7 31.5 15.0 3.7
ACD320-2S4.5 6.9 39 18.0 4.5
ACD320-2S5.5 7.6 44 20.0 5.5
ACD320-2S7.5 11.4 65 30.0 7.5
ACD320-4T0.7
Three phase
380V
range:：
-15%～20%
1.5 3.4 2.1 0.75
ACD320-4T1.5 3.0 5.0 3.8 1.5
ACD320-4T2.2 4.0 5.8 5.1 2.2
ACD320-4T3.0 4.9 8.3 6.8 3.0
ACD320-4T4.0 5.9 10.5 9.0 4.0
ACD320-4T5.5 8.9 14.6 13.0 5.5
ACD320-4T7.5 11.0 20.5 17.0 7.5
ACD320-4T11 17.0 26.0 25.0 11
ACD320-4T15 21.0 35.0 32.0 15
ACD320-4T18.5 24.0 38.5 37.0 18.5
ACD320-4T22 30.0 46.5 45.0 22
ACD320-4T30 40.0 62.0 60.0 30
ACD320-4T37 57.0 76.0 75.0 37
ACD320-4T45 69.0 92.0 91.0 45
ACD320-4T55 85.0 113.0 112.0 55
ACD320-4T75 114.0 157.0 150.0 75
ACD320-4T90 134.0 180.0 176.0 90
ACD320-4T110 160.0 214.0 210.0 110

ACD320user manual Type and specification of the inverter
- 6-
Inverter type
Input
voltage(V)
Rated power
(KVA)
Rated input
current(A)
Rated output
current(A)
Adapted
motor(KW)
ACD320-4T132
Three phase
380V range：
-15%～20%
192.0 256.0 253.0 132
ACD320-4T160 231.0 307.0 304.0 160
ACD320-4T185 237.0 340.0 330.0 185
ACD320-4T200 250.0 385.0 377.0 200
ACD320-4T220 280.0 430.0 426.0 220
ACD320-4T250 355.0 468.0 465.0 250
ACD320-4T280 396.0 525.0 520.0 280
ACD320-4T315 445.0 590.0 585.0 315
ACD320-4T355 500.0 665.0 650.0 355
ACD320-4T400 565.0 785.0 725.0 400
ACD320-4T450 630.0 883.0 820.0 450
ACD320-7T132
Three phase
660V range：
-15%～20%
192.0 170.0 150.0 132
ACD320-7T160 231.0 200.0 175.0 160
ACD320-7T185 240.0 218.0 198.0 185
ACD320-7T200 250.0 235.0 215.0 200
ACD320-7T250 355.0 265.0 260.0 250
ACD320-7T280 396.0 305.0 299.0 280
ACD320-7T315 445.0 350.0 330.0 315
ACD320-7T355 500.0 382.0 374.0 355
ACD320-7T400 565.0 435.0 410.0 400
ACD320-7T450 630.0 490.0 465.0 450
ACD320-7T500 700.0 595.0 550.0 500
ACD320-7T560 730.0 605.0 575.0 560

ACD320user manual Type and specification of the inverter
- 7-
2.5 Appearance and parts name explanation
Fig.2-3 parts name sketch
○
1:Screw hole
○
2:Nameplate
○
3:Motor output terminal
lower-cover
○
4:Operation surface
○
5:Power input terminal
upper-cover
○
6:Heat radiation vent
○
7:Power input terminal
○
8:External input/output
terminal
○
9:Energy consumption
braking resistance terminal
○
10:Motor output end
○
11:Grounding end

ACD320user manual Type and specification of the inverter
- 8-
2.6 Out size
2.6.1 Keypad out size
For example：36.5[1.44] Unit：millimeter [inch]
Fig.2-4 Fig.a Outer dimension Fig.2-4 Fig.b Outer dimension
Fig.2-4 Fig.c Outer dimension

ACD320user manual Type and specification of the inverter
- 9-
Out-pull panel indicator A- using keypad sheath
Out-pull panel indicator B- not using keypad sheath

ACD320user manual Type and specification of the inverter
- 10-
2.6.2 Chassis out size
2.6.2.1 Plastic chassis out size(wall mounted)
2.6.2.2 Metals chassis out size(wall mounted)

ACD320user manual Type and specification of the inverter
- 11-
2.6.2.3 Metals chassis outline dimention drawing (clothes closet)
2.6.2.4 Metals chassis outline dimention drawing (the Cabinet machine and the wall hangs
machine)

ACD320user manual Type and specification of the inverter
- 12-
Size table
Chassis
Specification and type
Size（mm）
Shell
A
B
H
W
D
d
E22
ACD320-2T0.4GB
ACD320-2S0.4GB
118.0
172.5
185.0
105.5
150.0
5.0
Plastic chassis
ACD320-2T0.75GB
ACD320-2S0.75GB
ACD320-2T1.5GB
ACD320-2S1.5GB
ACD320-4T0.75GB
ACD320-4T1.5GB
ACD320-4T2.2GB
ACD320-2T2.2GB
ACD320-2S2.2GB
170.0
ACD320-4T3.0GB/4.0
LB
ACD320-4T4.0GB
E75
ACD320-4T5.5LB
160.0
235.0
247.0
148.0
186.0
5.5
ACD320-4T5.5GB/7.5
LB
ACD320-4T7.5GB
E011
ACD320-4T11LB
210.0
322.0
336.0
150.0
200.0
7.0
Wall mounting Metals chassis
ACD320-4T11GB/15L
B
ACD320-4T15GB/18.5
LB
T030
ACD320-4T18.5G/22L
285.0 457.0 475.0 195.0 240.0 9.0
ACD320-4T22G/30L
ACD320-4T30G/37L
E037
ACD320-4T37G/45L
320.0
536.0
555.0
230.0
229.0
10.0
ACD320-4T45G/55L
E055
ACD320-4T55G/75L
410.0
611.0
634.0
320.0
236.0
12.0
ACD320-4T75G/90L
T090
ACD320-4T55G/75L
375.0
725.0
750.0
290.0
335.0
13.0
ACD320-4T75G/90L
ACD320-4T90G/110L
E132
ACD320-4T110G/132L
500.0 765.0
H1：790.0
400.0 340.0 11.0
H1:th
e wall
hangs
machi
ne
H2:th
e
Cabin
et
machi
ne
ACD320-4T132G/160L
H2：1130.0
K200
ACD320-4T160G/185L
685.0 - 1400.0 - 440.0 -
Clothes closet Metals
chassis
ACD320-4T185G/200L
ACD320-4T200G/220L
K400
ACD320-4T220G/250L
800.0
-
1600.0
-
550.0
-
ACD320-4T250G/280L
ACD320-4T280G/315L
ACD320-4T315G/355L
ACD320-4T355G/400L
ACD320-4T400G/450L

ACD320user manual Type and specification of the inverter
- 13-
K630
ACD320-4T500G/560L
1260.0
-
2290
-
620.0
-
ACD320-4T560G/630L
ACD320-4T630G/700L
Note：H1 is the height of wall mounted inverter, H2 is the height of clothes closet inverter.
2.7 Product technic index and specification
Item Specifications
Individualized
function
Maximum frequency 600.00Hz
Carrier frequency
1kHz～15kHz；the carrier frequency will be automatically adjusted
according to the load characteristics.
Input frequency
resolution
Digital setting: 0.01Hz
Analog setting: maximum frequency ×0.1%
Control mode
Open loop vector control (SVC)
V/F control
Open loop torque control
Startup torque
G model：0.5Hz/150%（SVC）
L model：0.5Hz/100%
Speed adjustment
range 1：100（SVC）
Speed stabilization
precision ±0.5%（SVC）
Torque control
precision ±15%（SVC）
Overload capacity
G model: 150% rated current 60s; 180% rated current 1s.
L model: 120% rated current 60s; 150% rated current 1s.
Torque boost Automatic torque boost; manual torque boost 0.1% to 30.0%
V/F curve Two types: straight line and square type
Acceleration/decel
eration curve
Straight line or S curve acceleration/deceleration mode;
four kinds of acceleration/deceleration time;
acceleration/deceleration time ranges between 0.0s to 3600.0s
DC brake
DC brake frequency: 0.00Hz to maximum frequency;
brake time: 0.0s to 50.0s, and brake current value: 0.0% to 150.0%.
Jog control Jog frequency range: 0.00Hz to 50.00Hz;
Jog acceleration/deceleration time: 0.0s to 3600.0s.
Simple PLC and MS
Speed Running
It can realize a maximum of 8 segments speed running via the
built-in PLC or control terminal.
Built-in PID It is easy to realize process-controlled close loop control system.

ACD320user manual Type and specification of the inverter
- 14-
Auto voltage
regulation (AVR)
It can keep constant output voltage automatically in case of change
of mains voltage.
Torque limit and
control
“Digging machine” feature, which can limit the torque
automatically and prevent frequent over current tripping during the
running process; the close loop vector mode can implement torque
control.
Peripherals
self-detection upon
power-on
It can conduct safety detections on the peripherals upon power-on,
including earth and short circuit detections.
Shared DC Bus
Function It can realize the function that multiple inverters share the DC bus.
M key Programmable key: Select the command channel switching/forward
and reverse rotations/jog operation/up and down.
Ru n
running command
channel
Three types of channels: operation panel reference, control terminal
reference and serial communication port reference. These channels can be
switched in various modes.
Frequency source
There are totally eight types of frequency sources, such as digital
reference, analog voltage reference, analog current reference, and serial
port reference etc.
These frequency sources can be switched in various modes.
Input terminal
There are five digital input terminals, one of which can be used as
high-speed pulse input. (The number of digital input terminals can be
expanded to ten) It can be compatible with active PNP or NPN input
mode.
There are two analog input terminals, one of which can be used only as
voltage input, while the other can be used as voltage or current input. (It
can expand one voltage input terminal)
Output terminal
There is one high-speed pulse output terminal (can be selected as open
collector mode), with square wave output of 0kHz to 50kHz. It can output
such physical parameters as setting frequency and output frequency.
One digital output terminal (can be expanded to two) One relay output
terminal (can be expanded to two) One analog output terminal (can be
expanded to two), with optional 0//4mA to 20mA or 0/2V to 10V. It can
realize the output of such physical parameters as setting frequency and
output frequency.
Display and
Keyboard
Operation
LED display It can display the parameters
protection function
It can implement power-on motor short-circuit detection, input/output
phase loss protection, over current protection, over voltage protection,
under voltage protection, over heat protection and overload protection.

ACD320user manual Type and specification of the inverter
- 15-
Environment
Using Place
Indoor, not bare to sunlight, not dust, no corrosive gas, no flammable gas,
no oil fog, no water drop or salt etc.
altitude Lower than 1,000 meters
ambient temperature -10 ℃Celsius to +40 ℃Celsius (derated when used in the ambient
temperature of 40 ℃Celsius to 50 ℃Celsius)
Humidity Less than 95%RH, without condensing
Vibration Less than 5.9 m/s2(0.6g)
Storage temperature －20℃～＋60℃
Must choose correct type, otherwise may cause abnormal running of the motor or damage
of the inverter.
Note
!
In order to give full play to the interver’s superior performance, please choose correct type
and check relevant content according to Chapter 2, then it can be used after wiring.