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HV390 Series Frequency Inverter. User Manual (Version: 3.1.14) - page 5

Failur

Failure

Failure description

Potential causes

Solutions

e No

code

loop feedback

failure

Improper setting of motor

Re-set the motor’s rated

parameters;

parameters;

Significant

deviation

of

28

ER07

Tuning error

Excute mtor aut-tuning

parameters obtained after

again under zero load

tuning comparing with the

condition.

standard parameters;

Current sensor failure and

Check the current sensor

Current detection

30

ER09

failure

bad contact

Contact your supplier

Trial period is

Contact your supplier

32

END

outdated

External fault

Act trigger by external fault

Check external device

33

ER12

according external fault

signal

Overload

1. Refer to OL1 and OL2;

1. Refer to OL1 and OL2;

34

OL

pre-alarm

2.

Improper setting of

2.

Modify setting of

Pd.04~Pd.06

Pd.04~Pd.06

106

7.3 Troubleshooting Procedures

START

Please shut down the power

supply immediately to avoid

further expansion of the fault

Serious fault occurs, such as abnormal sound

upon power up and no display

NO

Seek for technical help

Identify the fault code per 4.4.4" Common

NO

Characters Displayed by LED" AND whether

the fault code can be Identified

YES

Seek for technical help

Find out the possible reasons and

countermeasures for the failure as per the

NO

above table, and whether this failure is

removed

YES

Seek for technical help

Fault reset

END

107

Chapter 8 Routine Repair and Maintenance

The application environment (such as temperature, humidity, dust and powder, wool, smoke and

oscillation), burning and wearing of internal devices and other factors may increase the possibilities of

inverter failure. To reduce the failures and prolong the service life the inverter, it needs to conduct routine

repair and periodic maintenance.

Note

1. Only the personnel receiving professional training can dismantle and replace the inverter components.

2. Prior to inspection and maintenance, please make sure that the power supply to the inverter has been

shut down for at least ten minutes or the CHARGER indictor is OFF, or there may be risks of electric

shock

3. Do not leave metal components and parts in the inverter, or it may damage the equipment.

8.1 Routine Maintenance

The inverter shall be used under the allowable conditions as recommended in this manual and its routine

maintenance shall be conducted as per the table below.

Item

Inspection Contents

Inspection Means

Criteria

-10 ~ +40ºC

Derated at 40 to 50ºC, and the rated

Temperature

Thermometer

output current shall be decreased by

1% for every temperature rise of 1ºC.

Humidity

Humidiometer

5 ~ 95%, no condensing

There are no dust, oil, water and

Operating

Dust, oil, water and drop

Visual check

drop.

Environment

3.5mm, 2~ 9Hz;

Vibration

Special test instrument

10m/s²,9~ 200Hz; 15m/s²,200~

500Hz

Special test instrument,

There are no abnormal smell and

Gas

smell check and visual

smoke.

check

Overheat

Special test instrument

Exhaust normal

Sound

Listen

There is no abnormal sound.

There are no abnormal smell and

Gas

Smell and visual check

smoke.

The physical appearance is kept

Physical appearance

Visual check

intact.

There are no fouling and wool that

Heatsink fan ventilation

Visual check

Inverter

block the air duct.

In the allowable operating range.

Input current

Amperemeter

Refer to the nameplate.

In the allowable operating range.

Input voltage

Voltmeter

Refer to the nameplate.

In the rated value range. It can be

Output current

Amperemeter

overloaded for a short while.

Output voltage

Voltmeter

In the rated value range.

Special test instrument

There are no overheat fault and

Overheat

and smell.

burning smell.

Motor

Sound

Listen

There is no abnormal sound.

Vibration

Special test instrument

There is no abnormal oscillation.

108

8.2 Periodic Maintenance

It needs to perform periodic inspection on the inverter once every three to six months according to the

application environment and work conditions.

Item

Inspection Contents

Inspection Means

Criteria

The screws are tightened and the

Main circuit terminal

Screwdriver/sleeve

cables are kept well.

The screws are tightened and the

PE terminal

Screwdriver/sleeve

cables are kept well.

The screws are tightened and the

Control circuit terminal

Screwdriver

cables are kept well.

Reliability of internal

Screwdriver and

connections and

Connection is firm and reliable.

hands

Inverter

connectors

Expansion card

Screwdriver and

Connection is firm and reliable.

connector

hands

Mounting screws

Screwdriver/sleeve

The screws are tightened.

Cleaning the dusts

Cleaner

There are no dusts and wools.

and powders

Internal foreign

Visual check

There are no foreign objects.

objects

Motor

Insulation test

500VDC megameter

Normal

8.3 Component Replacement

Different types of components have different service lives. The service lives of the components are

subject to the environment and application conditions. Better working environment may prolong the

service lives of the components. The cooling fan and electrolytic capacitor are vulnerable components

and shall be conducted routine inspection as per the table below. If any fault occurs, please conduct

immediate replacement.

Vulnerable

Damage Causes

Solutions

Items for Routine Inspection

Components

Bearing wear, blade

The fan blade has no cracks and rotates

Fan

Change

aging

normally. The screws are tightened.

There are no electrolyte leakage, color

Ambient temperature

change, crack and shell inflation. The

Electrolytic

is relatively high and

Change

safety valve is normal.

capacitor

electrolyte volatilizes.

Static capacity is equal to or higher than

the initial value times 0.85.

Note

When the inverter is stored for a long period of time, power connection test shall be conducted once

within two years and last at least five hours. It can use voltage regulator to gradually increase the

value to the rated value when power connection is performed.

8.4 Insulation Test

Since the inverter has undergone insulation test upon its ex-factory, the user shall not perform such test

as much as possible under general condition. If the test is unavoidable, please perform the test strictly

according to the following procedures, or it may damage the inverter.

109

It shall perform dielectric test strictly, or it may damage the inverter. If the dielectric test is unavoidable,

please contact our company.

„ Main Circuit Insulation Test

‹ Utilize 500VDC megameter to perform test under condition of main power shutdown;

‹ Disconnect all the control board circuits to prevent the control circuits from connecting with the

test voltage. For the inverter with power level of HV390-4T11G/15L and HV390-4T15G/18.5L, it

must disconnect the terminal J1 on the drive board and the PE. For the inverter with power level

of HV390-4T18.5G/22L or above, it must disconnect three pieces of cables entry to the surge

absorption circuit. Pack the disconnected cable heads with insulating tapes properly;

‹ The main circuit terminal shall be connected with public conducting wires:

‹

PE

R

S

T

1

B

U

V

W

500 VDC

-

+

Fig:8−1 Main Circuit Insulation Test for HV390−0R4G1-2～HV390−2R2G1-2 、HV390−0R7G3～

HV390−015G3

PE

1

2

R

S

T

U

V

W

500 VDCLeading board

-

+

Fig:8−2 Main Circuit Insulation Test for HV390−018G3～HV390−400G3

‹

Megameter voltage can only be imposed between the public conducting wire of the main circuit

and the PE terminal;

‹

The normal indication value of the megameter is 20MΩ or above.

110

a. Operation control:

Run, Stop, Jog start, Jog stop, free run to stop, Dec to Stop, fault reset, etc.

b. Operation monitor:

Running frequency, frequency setting, output voltage, output current, close loop feedback, close

loop reference, etc.

c. Operation of function code:

Read and write value of function code, which includes:

Present running frequency, present frequency setting, output voltage, current, close loop feedback,

close loop reference, etc.

3.Free communication Protocol

3．1 Data：

Character format:8，N， 1，8 bit data，one bit stop, no parity

8，E， 1，8 bit data，one bit stop, Even parity

8，O， 1，8 bit data，one bit stop, Odd parity

1.

A message from computer to inverter

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

E10

HD

AD

CD

OP

DT

CON

ED

SUM

Item

Byte Name

Detail

HD

Start byte

02H，one byte

AD

address

Inverter address，one byte，0 is broadcast address

CD

Parameter

R/W

One byte

command

0h：no operation

1h：read parameter from the inverter

10h：write parameter from the inverter，not store into

eerom

11h：write parameter from the inverter， store into

eerom

OP

Parameter number

Parameter number，two bytes，BYTE3 is lower byte，

BYTE4 is higher byte

DT

Parameter value

Parameter value，two bytes，BYTE5 is lower byte，

BYTE6 is higher byte

CON

Control word

Command word，two bytes，

BYTE7 is lower byte，BYTE8 is higher byte

112

Bits of BYTE7 are defined as following:

bit0

=1，run command

=0，no command

bit1

=1，forward

=0，reverse

bit2

=1，forward jog start

=0，forward jog stop

bit3

=1，reverse jog start

=0，reverse jog stop

bit4

0-》1，Fault reset command

bit5 reserved

bit6

=1，free stop command

=0，no command

bit7

=1，decrease stop command

=0，no command

BYTE8 reserved

ED

End byte

A0H，one byte

SUM

Xor check

Xor form BYTE1 to BYTE9

2.

A message from the inverter to the computer

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

BYT

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

E10

HD

AD

CT

OP

DT

ST

ED

SUM

Item

Byte name

Detail

HD

Start byte

02H，one byte

IN

address

Inverter address，one byte，0 is broadcast address

CT

Parameter

operation

One bye

status

0：success

1：data received is exceed the range

2：address is exceed the range

3：data can not be modified while inverter is running

4：data is read only, can not be modified

OP

Parameter number

Parameter number，two bytes，BYTE3 is lower byte，

BYTE4 is higher byte

DT

Parameter value

Parameter value，two bytes，BYTE5 is lower byte，

113

BYTE6 is higher byte

ST

Status word

Status word of the inverter，two bytes，BYTE7 is lower

byte，BYTE8 is higher byte.

Bits of BYTE7 are defined as following:

bit0

=1，forward run

=0，reserse run

bit1

=1，inverter fault

=0，inverter no fault

bit2

=1，inverter running

=0，inverter stop

bit3

=1，data valid

=0，data invalid

bit4

=1，RS485 frequency setting

=0，loacl frequency setting

BYTE8 is the error code

ED

End byte

A0H，one byte

SUM

Xor check

Xor form BYTE1 to BYTE9

3．2 Application note

1．The OP,DT,ST,CON in communication protocol are two bytes. The address calculation of

OP is

converting the parameter address of the parameter list to HEX value. For example, 270 parameter, convert

to 10E in hex format; the lower byte of OP is 0eh;the higher byte of OP is 01h. Other parameters that are

not listed in parameter table are as following table.

1000H

Status word

1001H

Errorcode

1002 H

Control word

1003H

Frequency setting

1004H

Running

1005H

Output current

frequency

1006H

Output voltage

1007H

DC bus voltage

1008H

Overload rate

1009H

Preset line speed

100AH

Running line

100BH

Output torque

speed

100CH

PI reference

100DH

PI feedback

100EH

reserved

100FH

Analog input AI1

1010H

Analog input

1011H

I/O status

AI2

1012H

External counting

1013H

PID Set

value

2．For example, the computer set the set frequency of the inverter to 50.00Hz and send the run command to

the inverter. The address of the inverter is 01h. The OP of the setting frequency is 1003h in hex format. The

Setting frequency 50.00(5000) is convertedto 1388h in hex format.

A message from computer to the inverter:

02H

01H

10H

03H

10H

88H

13H

03H

00H

A0H

3AH

The inverter response:

114

02H

01H

00H

03H

10H

88H

13H

1DH

00H

A0H

34H

3．3 Fault and troubleshooting

1. The protocol provide Start byte, end byte , xor check means to essure the correctness of the

communication.

2. There must be two bytes interval between two meaasge.

3. After the host issue a message, if the inverter does not response in seven bytes interval, the over

time fault of communication takes place.

4. MODBUS Protocol

4.1 Character format

1. ASCII

Communication adopts hexadecimal system, and the valid ASCII characters are: “0”…“9”，“A”…“F”,

which is expressed in hexadecimal format. Such as:

ASCII character: ‘0’‘1’‘2’‘3’‘4’‘5’‘6’‘7’‘8’‘9’‘A’‘B’‘C’‘D’‘E’‘F’

ASCII code (Hex):30H 31H 32H 33H 34H 35H 36H 37H 38H 39H

41H 42H 43H 44H 45H 46H

7,N,2

start

0

1

2

3

4

5

6

stop

stop

7,E,1

start

0

1

2

3

4

5

6

even

stop

7,O,1

start

0

1

2

3

4

5

6

odd

stop

2. RTU

8,N,2

start

0

1

2

3

4

5

6

7

stop

stop

8,E,1

start

0

1

2

3

4

5

6

7

even

stop

8,O,1

start

0

1

2

3

4

5

6

7

odd

stop

115

4.2 Function code

Function code

Description

03H

Read data

06H

Modify data

08H

Loop detection

2．Function code description

RTU

（1）Read data

Frame head and frame tail are used to ensure input time (without any information) larger than 10ms.

Each time, reading data should be less than 30 bytes.

Message format of master request:

Slave

Function

Start address of data

Data quantity

Redundancy

address

code

(Unit: word)

check

1 byte

03H

MSB

LSB

MSB

LSB

LSB

MSB

Message format of slave response:

Slave

Function

Data

Data 1

…

Data n

Redundancy

address

code

quantity

check

1 byte

03H

1 byte

MSB

LSB

…

MSB

LSB

LSB

MSB

MSB: high byte of double byte number; LSB: low byte of double byte number.

（2）Modify data

Message format of master request:

Slave address

Function code

Start address of data

Modified value

Redundancy check

1 byte

06H

MSB

LSB

MSB

LSB

LSB

MSB

Message format of slave response:

116

Slave address

Function code

Start address of data

Modified value

Redundancy check

1 byte

06H

MSB

LSB

MSB

LSB

LSB

MSB

(3) Loop detection

The command is used to test whether communication between main control equipment (usually PC

or PLC) and the drive is normal. After receiving data content, the drive will return it to main control

equipment without any modifying.

ASCII:

(1)

Read data:

Reading data should be less than 30 bytes at a time.

Message format of master request:

Frame

Function

Slave address

Data address

Data quantity

LRC

Frame tail

head

code

‘:’

MSB

LSB

‘0’

‘3’

4

3

2

1

4

3

2

1

MSB

LSB

CR

LF

Message format of slave response:

Frame

Function

Slave address

Data address

Data quantity

LRC

Frame tail

head

code

‘:’

MSB

LSB

‘0’

‘3’

4

3

2

1

4

3

2

1

MSB

LSB

CR

LF

(2) Modify data:

Message format of master request:

Frame

Function

Slave address

Data address

Modified value

LRC

Frame tail

head

code

‘:’

MSB

LSB

‘0’

‘6’

4

3

2

1

4

3

2

1

MSB

LSB

CR

LF

Message format of slave response:

Frame

Function

Slave address

Data address

Modified value

LRC

Frame tail

head

code

117

‘:’

MSB

LSB

‘0’

‘6’

4

3

2

1

4

3

2

1

MSB

LSB

CR

LF

3．Examples

(1) Function code 03H: Read parameter data

ASCII mode:

Format of query message:

Format of response message:

Starting character

‘:’

Starting character

‘:’

Slave address

‘0’

Slave address

‘0’

‘1’

‘1’

Function code

‘0’

Function code

‘0’

‘3’

‘3’

Data address

‘0’

Data address

‘0’

‘2’

‘0’

‘0’

‘0’

‘0’

‘2’

Data

quantity

‘0’

Data content

‘1’

(word)

‘0’

‘5’

‘0’

‘5’

‘1’

‘9’

LRC

‘F’

LRC

‘8’

‘9’

‘C’

END

CR

END

CR

LF

LF

RTU mode:

Format of query message:

Format of response message:

Slave address

01H

Slave address

01H

Function code

03H

Function code

03H

118

Data address

02H

Data address

00H

00H

02H

Data quantity

00H

Data content

15H

(Word)

01H

59H

Low byte CRC

85H

Low byte CRC

2AH

High byte CRC

B2H

High byte CRC

A0H

(2) Function code 06H: Write parameter data

ASCII mode:

Format of query message:

Format of response message:

Starting character

‘:’

Starting character

‘:’

Slave address

‘0’

Slave address

‘0’

‘1’

‘1’

Function code

‘0’

Function code

‘0’

‘6’

‘6’

Data address

‘0’

Data address

‘0’

‘1’

‘1’

‘0’

‘0’

‘0’

‘0’

Modified value

‘1’

Modified value

‘1’

‘7’

‘7’

‘7’

‘7’

‘0’

‘0’

LRC

‘7’

LRC

‘7’

‘1’

‘1’

END

CR

END

CR

LF

LF

RTU mode:

Format of query message:

Format of response message:

119

Slave address

01H

Slave address

01H

Function code

06H

Function code

06H

Data address

01H

Data address

01H

00H

00H

Modified value

17H

Modified value

17H

70H

70H

Low byte CRC

86H

Low byte CRC

86H

High byte CRC

22H

High byte CRC

22H

(3) Function code 08H: loop detection

ASCII mode:

Format of query message:

Format of response message:

Starting character

‘:’

Starting character

‘:’

Slave address

‘0’

Slave address

‘0’

‘1’

‘1’

Function code

‘0’

Function code

‘0’

‘8’

‘8’

Sub-function code

‘0’

Sub-function code

‘0’

‘0’

‘0’

‘0’

‘0’

‘0’

‘0’

Data content

‘1’

Data content

‘1’

‘2’

‘2’

‘A’

‘A’

‘B’

‘B’

LRC

‘3’

LRC

‘3’

‘A’

‘A’

END

CR

END

CR

LF

LF

120

RTU mode:

Format of query message:

Format of response message:

Slave address

01H

Slave address

01H

Function code

08H

Function code

08H

Sub-function code

00H

Sub-function code

00H

00H

00H

Data content

12H

Data content

12H

ABH

ABH

Low byte CRC

ADH

Low byte CRC

ADH

High byte CRC

14H

High byte CRC

14H

4.4 Control word and status word

1. Information of status word (2 bytes)(1000H)

Bit0

=1, FWD

=0, REV

Bit1

=1, Drive failure

=0, No drive failure

Bit2

=1, Running state

=0, Stopping state

Bit3

=1, Modifying parameter valid

=0, Modifying parameter invalid

Bit4

=1, Frequency setting via RS485

=0, Local frequency setting

Bit5

=1, RS485 running control

=0, Local running control

2. Information of status word (2 bytes) (1002H)

Bit0

=1, Running command

=0, No running command

121

Bit1

=1, FWD

=0, REV

Bit2

=1, Jog FWD

=0, Jog FWD and stop

Bit3

=1, Jog REV

=0, Jog REV and stop

Bit4

=1, Fault reset command

=0, No fault reset command

Bit5

=1, Dec to stop command

=0, No Dec to stop command

Bit6

=1, Free run to stop

=0, No free run to stop

Bit7—bit15

Reserved

3. Parameter address

Addres

Name

Addres

Name

Addres

Name

1000H

Status word

1001H

Errorcode

1002 H

Control word

1003H

Frequency setting

1004H

Running

1005H

Output current

frequency

1006H

Output voltage

1007H

DC bus voltage

1008H

Overload rate

1009H

Preset line speed

100AH

Running line

100BH

Output torque

speed

100CH

PI reference

100DH

PI feedback

100EH

reserved

100FH

Analog input AI1

1010H

Analog input

1011H

I/O status

AI2

1012H

External counting

1013H

PID closed loop

value

setpoint

4.5 Fault and troubleshooting

If communication fault occurs, the drive will response fault code, and report function code or 80H to the

main control equipment.

For example:

ASCII mode:

RTU mode:

Starting character

‘:’

Slave address

01H

122

Slave address

‘0’

Function code

86H

‘1’

Fault code

02H

Function code

‘8’

Low byte CRC

C3H

‘6’

High byte CRC

A1H

Fault code

‘0’

‘2’

LRC

‘7’

‘7’

End character

CR

LF

Fault code:

01

Function code error:

Function code is invalid. In the protocol, valid function codes are: 03H, 06H or 08H.

02

Invalid data address:

Dataaddress is invalid

03

Invalid data setting

Data value is invalid.

04

Invalid command:

In current state, the drive can not execute this command.

09

Wrong CRC check

11 Reserved

12 Message characters of the command string is too short

13 Command string is too long, and reading string should be less than 72 characters.

14 Contains non-ASCII character, non-starting character or non-CR, LF end character.

Additional information

1. Function code conversion

If preset data is n, then sending data n = n×(1/increment) (Refer to function parameters table)

Convert data “n” into HEX number, which is 2 bytes.

123

Appendix B Control Mode Setting Process

‹ A inverter connected to a computer

Twisted pair with shielded

Converter

RS232-485

GND 485+ 485-

RS232 cable

Maximum 15

GND

meters

Computer

Site No.1

Appendix Fig.1A inverter connected to a computer

‹ Several inverters connected to a computer

With shielded twisted pair

converter

RS232-485

GND 485+ 485-

GND 485+ 485-

GND 485+ 485-

RS232

cable

GND

Maximum

15 meters

······

Computer

Site No. 1

Site No. 2

Site No. n

The switch of terminal resistor of

the inverter at the most distant

place id turn to ON, start, the

internal 100Ω terminal compatible

resistance

Appendix Fig.2Several inverters connected to a computer

125

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