Veichi Electric AC70E-S2-R40G, AC70E-S2-1R5G, AC70E-T3-R75G, AC70E-T3-1R5G, AC70E-S2-R75G User Manual

1

FOREWORD

Thank you for using AC70E series inverter produced by Veichi Electric Co.Ltd

AC70E series inverter is a new generation of high-performance mini -frequency inverter independently

developed by Veichi, With advanced control method and rich function design. Users will be satisfied by

the simplified PLC, PID adjustor, programming I/O terminal, RS485 interface, analog I/O terminal, and

other specific control functions for particular industries in the benefit of AC70E

This manual is the supporting data sheet for AC70E

This instruction manual includes save tips, instructions (messages) of installing wiring, keyboard

operation, simple function table, troubleshooting, maintenance only. For parameters setting detail, pls

read AC70 general used series manual or consult us. For the best results and safe operations with the

AC70 series, carefully read and keep this manual. Make sure it is handy for the ultimate user of the

inverters for reference.

To receive technical support related to the inverter, please contact the Veichi sales office or the dealer

from whom you purchased. You can also contact our Customer Service Center, and we will try our

best to help you.

We are sparing no effort to upgrade our products and regret not to issue prior notification if there is any

revision to this instruction manual. Pray for your consideration for the inconveniences

2

Chapter 1: Summarize

1.1 Safety requirements and cautions

To ensure safety of your health, equipment and property, please read this chapter carefully before use

the frequency inverter and act in compliance with the instructions while carrying, installing, debugging,

running and overhauling the frequency inverter.

Warn sign and meaning

Danger: it will cause danger of serious injuries and even death while
operating against the rules

Caution: it will cause danger of light injuries or equipment
destruction while operating against the rules

Qualified operation

Only qualified person after professional train can operate the equipment.The operator must be with
professional train, familiar with installation, wiring, running and maintain of equipment, and can deal
emergency case.

Safe guide

Warn sign is for safe, to prevent operator from hurt and prevent this product and relating equipment
from being damaged. Before operating, be sure to carefully read the manual about safety, installation,
operation and maintenance and obey to the safe rules and warn sign.

●

Right transport, store, installation and careful operation and maintenance is most important for inverter safe run. In

transport and store process, make sure the inverter is free from impact and vibration. It must be stored where is dry,

without corrosive air and conductive dust, temperature lower than 60 .

℃

●

This product carries dangerous voltage and controls driver machine with potential danger. If not abide the

regulations or requirements in this manual, there is danger of body injury even death and machine system damage.

●

Do not wire while the power is conneted. Otherwise there is danger of death for electric shock. Before wiring,
inspection, maintenance, please cut power supply of all related equipments and ensure mains DC voltage in safe

range. And please do operation after 5 mins.

●

Power wire, motor wire and control wire should be all connected firmly. Earth must be reliable and earth resistance
must be lower than 10Ω.

●

Human body electrostatic will seriously damage inner sensitive components. Before operation, please follow ESD

measures. Otherwise there is danger of iverter damage.

●

Inverter output voltage is pulse wave. If components such as capacitor what improves power factor and

pressure-sensitive resistance for anti-thunder and so on are installed at the output side, please dismantle or change

to input side.

●

No switch components such as breaker and contactor at the output side. (If there must be one, please make sure

the output current is 0 while the switch acting).

●

No matter where the fault is, there is danger of serious accident, even human body injury what means dangerous

malfunction possibility. So there must be additional external prevent measures or other safety devices, such as

independent current limiting switch, machinery fense and so on.

●

Only used in application fields as maker stated. No use in equipments related to special fields such as emergency,

succor, ship, medical treatment, avigation, nuclear and etc.

●

Only service department of the maker or its authorized service center or professional person trained and authorized

3

by Veich can maintain the products. They should be very familiar with the safety warning and operation gist in this

manual.

1.2 Before use

Pls check whether any package damage while receiving the product you ordered. If the package is ok, pls open it and check the
inverter. If damage caused in transport, it is not duty of Veich company. But please contact Veich or the transport company
immediately.
After checking the product, please also check if the model is the one you ordered. The model of the product is on the
nameplate “MODEL” column. If any problem, please contact us freely.

Nameplate position and content

Model explaination

Single phase 220V Three phase 380V

4

Model Max motor

Ratted

current

Model Max motor

Ratted

current

AC70E-S2-R40G 0.4kW 2.5A AC70E-T3-R75G 0.75kW 2.3A
AC70E-S2-R75G 0.75kW 4A AC70E-T3-1R5G 1.5kW 3.7A
AC70E-S2-1R5G 1.5kW 7A AC70E-T3-2R2G 2.2kW 5A
AC70E-S2-2R2G 2.2kW 10A AC70E-T3-3R7G 3.7kW 8.5A

1.3

Product technique specifications

Items Specifications

Power

Voltage/frequency

Single phase 220V 50/60Hz

Three phase380V 50/60Hz

Allowable fluctuations voltage:±15%, frequency:±5%

Control

Frequency range 0-400Hz
Frequency ACCuracy ±0.5% of max frequency

Frequency setting
resolution

0.01Hz:Operating“up”and”down”keys on keyboard

0.2Hz:Potentiometers analog input

V

oltage/frequency

characteristics

Voltage 50%

-

100% the rated voltage adjustable,

Motor rated frequency 25-400Hz(2000Hz) adjustable

Carrier frequency 1.0-15.0KHz/Random carrier modulation

Torque upgrade

0--25.0% adjustable

/

auto torque upgrade

/

random V/

F curve

optional
Maximum Capacity 150% for one minute, 180% for 2s, 200% instant jump.
ACC and DECtime 0.1-6500s

Rated output voltage

Take advantage of the power supply voltage compensation

function, if motor rated voltage is 100%,the voltage can be set in

the 50 -100% scope(the voltage output should not exceed the

input voltage )

AVR adjust

When the grid voltage fluctuates, changes in the output voltage is

very small, remained constant V / F

Automatic

energy-saving
operation

ACCording to the load conditions, automatic optimize the V / F

curves to implement energy saving operation

Standard functions

PID control,

ACC

and

DEC

time adjustable,

ACC

and

DEC

mode

variable, Carrier frequency adjustment, Torque upgrade, Current

limiting, Speed tracking and restart, Frequency hopping,

Frequency fluctuation limite control, Program running, Multi-steps

speed, Pendulum frequency operation, RS485, Analog output,

Pulse output frequency
Brake Energy-consuming braking, DC braking

Frequency setting input

Key

board number settings, keyboard potentiometers

/ external

terminal VS: 0 ~ 10V, the external terminal AS : 4-20mA, RS485
and signal composition and terminal options

Signal Feedback input

External terminal VS: 0 ~ 10V external terminal AS: 4

-

20mA,

RS485

Input order signals

Start, stop, positive and negative rotating , jog, multi

-

steps speed,

free parking, reset, ACC and DECtime choice, frequency settings

channels choice, external malfunctions alarm

5

External output signal

Relay output, the collector outp

ut, 0-10V output, 4

-

20mA output,

the frequency pulse output

Protection function

Overvoltage, undervoltage, current limiting, over

-

current,

overload, electric thermal relays, overheat, pressure stall, data

protection

Display

Setting Function number/data

Running

Output frequency, give frequency, output current, input voltage,

output voltage, motor speed, PID feedback, quantitative PID,

module temperature, input and output terminal

Fault

Overvoltage, undervoltage, overcurrent, short circuit, phase

missing, overload, heat, pressure stall, current limiting, data

protection is damaged, current fault operating conditions,

historical fault

Condition

Installation sites

Indoor, elevation of not more than 1000 m, no corrosive gases

Temperature, humidity -10—+40℃, 20%—90%RH(No condensation)
Vibration Below 20Hz less than 0.5g
Storage Temperature -25—+65℃
Installation mode Wall-mounted mode
Protection degree IP20
Cooling Mode Forced air-cooling

1.4 Cautions in utilization

Frequency inverter is designed to be permit to run under industrial surrounding with electromagnetic
interference. Usually, if install quality is good, it ensures frequency inverter safe run without fault. Pls
install according to below rules to ensure reliable run and avoid the impact of electromagnetic
interference.

● Ensure all equipments connected to frequency inverter are connected to star earth or common
earth bus by short and thick cable as well as frequency inverter. Motor earthing should be as
close as possible. Do not connect motor cruster to earth terminal of frequency inverter or
protection earth of control system.

● Conductor should be flat/ multi cores what has lower impedance at high frequency.

● Cut cable neatly to ensure unshield cable as short as possible.

● Control wire should be away from the supply cable and motor cable as far as possible and use

independent wire slot. While it must across to the supply cable and motor cable, should be 90º
vertical acorss.

●Ensure that the contactor in the cabinet has wave surge suppresser.Or‘R-C’damping circuit is
connected to the winding of AC contactor. Voltage dependent resistor corresponding to the
winding voltage is used. And freewheel diode or components such as voltage dependent
resistor corresponding to the winding voltage are connected to DC contactor. It is very important
while contactor, controlled by output relay of inverter, acts frequently.

● Cable connected to motor should be shielded cable or armoured cable. The two barriers are

earthed reliably by cable grounding card.

● Build noise filter at the input side to reduce electromagnetic interference from other equipments

at the power grid side. The noise filter should be as close to the inverter power input terminal as

6

possible. Meantime, the filter must earth reliably as the inverter.

● Build noise filter at the output side to reduce radio interference and inductive disturbance. The

noise filter must be as close to the inverter output terminal as possible. Meantime, the filter must

earth reliably as the inverter.

● Anytime, control circuit wire should be shielded cable.

● Add zero phase reactor in power supply wire near inverter input terminal and add zero phase

reactor in the motor wire near inverter output terminal to reduce electromagnetic interference to

the inverter efficiently.

● Earthing

Right and reliable earthing is the basic condition of safe and reliable running of the product. For

right earthing, please read the following notice carefully.

● In order to avoid electric shock, earthing cable should be the

size as electric equipment technic standard required and
cable length should be as short as possible. Otherwise
inverter leakage current will causes unstable potential of
the earthing terminal which is far from the earthing point.
Electric shock accident will happen frequently.

● Earth terminal must earth. Earth resistance must be below
10Ω. Otherwise there is danger of death.

● Please do not share earth cable with welder or other big

current/pulse power equipment. Otherwise inverter will act
abnormally.

● While multi inverters are using at the same time, please do
not wind the earth wire to loop-type. Otherwise inverter will
act abnormally.

7

Chapter 2: Installation

2.1 Inverter stable running environment

Install environment is very important to the best use of this product for long time. Pls install this product

in the enviorment as the folling chart requirement.

Environment

Requirement

Install place

Indoor without direct sunshine

Install temperature

-10 ～ +40

℃（

hanging type）

-10 ～ +45

℃（

cabinet type）

Store temperature -20 ～ +60℃

Humidity

<95%RH, no condensation

Surrounding

Please install the inverter in place as below：

● Place without oil mist、corrosive gases、flammable gases、 fust or etc.

● Place without metal dust、oil、water or etc into inverter (please do not install
inverter on flammable material such as food and etc).

● Place without radioactive material or flammablematerial.

● Place without poisonous gases or liquid.

● Place with very little salification erosion.

● Place whihout direct sunshine.

Altitude

<1000m

Vibration

<10～20Hz∶9.8m/s2
<20～55Hz∶5.9m/s2

Installation and

cooling

● Inverter can not be installed horizontally, must be installed vertically.

● Please independently install high heating equipments such as braking resistor
and etc which can not be installed in the same cabinet with inverter, stalled at
the air-in port of the inverter is strictly prohibited.

2.2 Installation notice and related requirement

● AC70E inverter components

8

● Installation direction and space

Single machine installation: to ensure enough ventilation and wiring space for inverter cooling, please

follow installation conditions as below.It should adopts hanging style or closet style with upright

installation and keeps enough space with surroundings or the wall.

Multi inverters paratactic installation: while install multi inverters in cabinet, please ensure installation

space as below.

9

2.3 Dimension of inverter and keyboard

W1

H

1

W

H

D

D1

MODEL WW W1 H H1 D D1

INSTALLATION

APERTURE

AC

70E-S2-R40G

88 75 142.5 129.5 142 132 ф5

AC

70E-S2-R75G

AC

70E-S2-1R5G

AC

70E-T3-R75G

AC

70E-T3-1R5G

AC

70E-S2-2R2G

106 90 172 158 142 132 ф6

10

AC

70E-T3-2R2G

AC

70E-T3-3R7G

2.4 Keyboard dimension (unit: mm)

58

7

0

16.5

20.9

4

5

37

1

8

.

5

6

7

.

8

58

2.5 Electric installation

This chapter explains the regulations that users have to obey aimed to ensuring safe use, best

performance and reliable running.

Note:Analog monitor output is special output of meters such as frequcy meter, current meter, voltage

meter and etc. It can not be used for control operations such as feedback control.

●Switch terminals connection function specification

Switch terminal

Selectable

Picture example Function specification

11

J1

0.2--10kHz frequency output

J2

0--20mA current output
4--20mA current output

J3

0--10V voltage output

● Suggested braking resistance

Single-phase 220V Single-phase 220V

Motor

power

Resistance

value

Resistance

power

Braking

moment

Motor

power

Re

sistance

value

Resistance

power

Braking

moment

0.4 kW 400Ω 100W 100%

0.75

kW

750Ω 150W 100%

0.75 kW

200Ω 120W 100%

1.5

kW

400Ω 300W 100%

1.5 kW 100Ω 300W 100%

2.2

kW

250Ω 400W 100%

2.2 kW 75Ω 300W 100%

3.7

kW

150Ω 500W 100%

● Main circuit terminals

Terminal Name Function definition

(+)

Braking resistance
terminal

Used for external braking resistance to realize quick stop.

PB

R/L

AC input terminal

Used to connect AC power supply (R/L,S,T/N for T3 AC

input:R/L,T/N for S2AC input).

S

T/N

U

AC output terminal Used to connect the motor or other sensitive/resistive load.

V

W

Earth Earth terminal, earth resistance<10 OHM

● Control loop terminals

12

Terminal Name Function definition

TA

Normally-open
contact

Can set the action and object by programme.
Max contact capacity: 3A/240VAC

TC

Y

Collector
open output

Can set the action and object by programme.
Max contact capacity:DC30V/50mA

+24V

Auxiliary
power output +

Max output: 24VDC/100mA。

COM

Auxiliary

power output

-

FWD Forward Short connect with (COM) valid.

REV Reverse Short connect with (COM) valid.

X1

Multi function conta

ct

input X1

Short connect with (COM) valid.
Multi function input terminals can be programme set definition. Pls
refer F-01--F-04。

X2

Multi function contact

input

X2

X3

Multi function contact

input X3

X4

Multi function contact

input

X4

AO Analog output

Physical type of output signal

:0--

10V 0--20mA 4

--20mA

frequency pulse output, selectable by function F-61/F-62 or switch
J1 J2 J3.

AS Current analog input

As inverter control signal or feedback signal, can set the act range
and response speed by programme.
VS resistance：89KΩ, AS resistance：250Ω.

VS Voltage analog input

+10V

Signal auxiliary
power terminal

Max output 10VDC/50mA。

GND

Signal auxiliary
power terminal

Common auxiliary power of analog output, analog input signal.

A+

Communication

terminal A+

RS485 communication port

B-

Communication
terminal B-