LS Industrial Systems SV-iS7 Series Programming manual

0.75~75kW(200V), 0.75~375kW(400V)
AC Variable Speed Drive
iS7 Troubleshooting Manual
Safety Instructions
Read this manual carefullybefore servicing or inspecting this equipment.
Keepthis manual within easy reach for quick reference.

1
Quick Reference Table
The following table contains situations frequently encountered by users while working with inverters.
Refer to the typical and practical situations in the table to quickly and easily locate answers to your
questions.
Situation
Reference
The motor is too noisy.
P. 35
I want to review recent fault trip and warning histories.
P. 18
The motor runs too hot.
P. 32
The cooling fan does not work.
P. 36
I want to know how can I keep the inverter when I don`t use it.
P. 47
ERR message is displaying on keypad.
P. 21
I want to initialize the parameter.
P. 16
I want to scrap the inverter.
P. 47
I want to review the input/output module.
P. 41
I want to change the FAN when it exceed replacement period
P. 45
I want to change the carrier frequency.
P. 14
I cannot set the parameter.
P. 31
The motor does not work.
P. 35
The motor stop when it accelerate the speed or connect the load.
P. 33

2
Contents
INTRODUCTION 3
Manual Composition 3
PRODUCT IDENTIFICATION 4
ASSOCIATION MANUAL 4
SAFETY INFORMATION 5
REVISION RECORD 7
1BASIC CHECKLIST 8
1.1 Before You Think It Is Failure 8
1.2 Basic Operations 10
1.3 Parameter Change 14
1.3.1 Carrier FrequencyChange 14
1.3.2 InitializingAll Parameters 16
1.3.3 Read and Write Parameters 17
1.4 Fault Trip Monitoring 18
2TROUBLESHOOTING 21
2.1 Trips and Warnings 21
2.1.1 Fault/Warning List 21
2.1.2 Troubleshooting Fault Trips 25
2.2 Troubleshooting Other Fault 31
3MAINTENANCE 37
3.1 Regular Inspection Lists 38
3.1.1 DailyInspections 38
3.1.2 Annual inspections 39
3.1.3 Bi-annual Inspections 40
3.1.4 Checking the Input/Output Modules 41
3.1.5 Replacement of the cooling fan 45
3.2 Storage and disposal 47
3.2.1 Storage 47
3.2.2 Disposal 47

3
Introduction
Manual Composition
1.1 Before You Think It Is Failure
1.2 Basic Operations
1.3 Parameter Change
1.3.1 Carrier Frequency Change
1.3.2 InitializingAll Parameters
1.3.3 Read and Write Parameters
1.4 Fault Trip Monitoring
2.1 Trips and Warnings
2.1.1 Fault/Warning List
2.1.2Troubleshooting FaultTrips
2.2 Troubleshooting Other Fault
3.1 Regular Inspection Lists
3.1.1 Daily Inspections
3.1.2Annual inspections
3.1.3Bi-annual Inspections
3.1.4 Checking the Input/Output Modules
3.1.5 Replacement of the cooling fan
3.2 Storage and disposal
3.2.1Storage
3.2.2 Disposal
There are troubleshooting fault trips &
other faults in these pages.
If problems are not resolved, please
contact your vendor or LSIS.
There are the regular inspection lists
in these pages.
When the problem of inverter occur,
please check the input/output module
that is basic hardware check method.
When the problem of inverter occur,
you can check the basic checklist
before you think it is failure in these
pages.
check the set-up of parameter using
basic operations first and then
check the trip record.
1 Basic Checklist
2 Troubleshooting
3 Maintenance

4
Product Identification
Association Manual
iS7 user manual can be download through the homepage of LSIS.
Link : http://www.lsis.com/support/download/
Motor capacity
Model name
Power source
specifications
Output
specifications
Input voltage
Loader
UL
2-3상200~230[V]
4-3상380~480[V]
N:NoLoader
S: GraphicsLoader
Series name

5
Safety Information
Read and follow all safety instructions in this manual precisely to avoid unsafe operating conditions,
property damage, personal injury, or death.
Safety symbols in this manual
Danger
Indicates an imminently hazardoussituation which, if not avoided, will result in severe injuryor death.
Warning
Indicates a potentiallyhazardous situation which, if notavoided,could result in injuryordeath
Caution
Indicates a potentially hazardous situation that, if not avoided, could result in minor injury or property
damage.
Safety information
위험
Do not open the cover of the equipment while it is on or operating. Likewise, do not operate the
inverter while the cover is open. Exposure of high voltage terminals or charging area to the external
environment may result in an electric shock. Do not remove any covers or touch the internal circuit
boards (PCBs) or electrical contacts on the product when the power is on or during operation.
Doing so mayresult in serious injury, death, or serious property damage.
Do not open the cover of the equipment even when the power supply to the inverter has been
turnedoff unless it is necessaryfor maintenance or regular inspection. Opening the cover may
result in an electric shock even when the powersupply is off.
The equipment may hold charge long after the power supply has been turned off. Use a multi-meter
to make sure that there is no voltage before working on the inverter, motor or motor cable.

6
Warning
This equipment must be grounded for safe and proper operation.
Do not supply power to a faulty inverter. If you find that the inverter is faulty, disconnect the power
supply and have the inverter professionally repaired.
The inverter becomes hot during operation.Avoid touching the inverter until it has cooled to avoid
burns.
Do not allow foreign objects,suchas screws, metalchips, debris, water, oroil to get inside the
inverter.Allowing foreign objects inside the inverter may cause the inverter to malfunction or result in
a fire.
Do not operatethe inverter with wet hands. Doing so mayresult in electric shock.
Caution
Do not modify the interior workingsof the inverter. Doing so willvoid the warranty.
The inverter is designed for 3-phase motor operation. Do not use the inverter to operate a single
phase motor.
Do not place heavy objects on top of electric cables. Doing so may damage the cable and result in
an electric shock.

7
Revision Record
Version
Date
Changed main
contents
Association page
V1.0
2015.07
First edition
-

8
1Basic Checklist
1.1 Before You Think It Is Failure
Items
Check Point
Result
Installation
Location/
Input/Output
voltage
Is the installation location appropriate?
Does the environment meet the inverter’s operating conditions?
Does the power source match the inverter’s rated input?
Is the inverter’s rated output sufficient to supply the equipment?
PowerTerminal
Wiring
Is a circuit breaker installed on the input side of the inverter?
Is the circuit breaker correctly rated?
Are the power source cables correctly connected to the R/S/T
terminals of the inverter?
(Caution: connecting the power source to the U/V/W terminals may
damage the inverter.)
Are the motor output cables connected in the correct phase rotation
(U/V/W)?
(Caution: motors will rotate in reverse direction if three phase cables
are not wired in the correct rotation.)
Are the cables used in the power terminal connections correctly rated?
Is the inverter grounded correctly?
Are the power terminal screws and the ground terminal screws
tightened to their specified torques?
Are the overload protection circuits installed correctly on the motors (if
multiple motors are run using one inverter)?
Is the inverter separated from the power source by a magnetic
contactor (if a braking resistor is in use)?
Are advanced-phase capacitors, surge protection and electromagnetic
interference filters installed correctly?
(These devices MUST not be installed on the output side of the
inverter.)

1. Basic Checklist
9
Items
Check Point
Result
Control
TerminalWiring
Are STP(shielded twisted pair) cables used for control terminal wiring?
Is the shielding of the STP wiring properly grounded?
If 3-wire operation is required, are the multi-function input terminals
defined prior to the installation of the control wiring connections?
Are the control cables properly wired?
Are the control terminal screws tightened to their specified torques?
Is the total cable length of all control wiring < 165ft (50m)?
Is the total length of safety wiring < 100ft (30m)?
Miscellaneous
Are optional cards connected correctly?
Is there any debris left inside the inverter?
Are any cables contacting adjacent terminals, creating a potentialshort
circuit risk?
Are the control terminal connections separated from the power
terminal connections?
Have the capacitors been replaced if they have been in use for > 2
years?
Has afuse been installedfor the powersource?
Are the connections to the motor separated from other connections?

1. Basic Checklist
10
1.2 Basic Operations
Key Functions
Refer to the following illustration to identify part names and functions
Operation Keys
The following table lists the names and functions of the keypad’s operation keys.
Key
Key Name
Function Description
Mode Key
- Change Mode
Program Key
- If the button is pressed once, the parameter can be edited at the
status of editable parameter code. If the button is pressed after
modification, it saves the modified data.
Upkey
- Used when writing data or move codes.
Down Key
Left/Right Key
- Movement among groups.
- Movement of cursor in writing.
Multi-Function
Key
- Register Jog or User codes.
Cancel Key
- In writing to the drive, it is possible to use saved data previously if this
buttonis pressed before the pressing Program Key.
- Move to first code when code moving is required in a group.
- Move to Monitor mode when Mode moving.
Forward Key
- Motor rotates in forward direction.
1. Cancel(ESC)
2. Move to Left
3. Mode Selection
4. Reverse Operation LED
5. Reverse Operation
6. Stop Indication LED
7. STOP/RESET
8. Move Down
9. Forward Operation
10. Forward Operation LED
11. Multi-Function
12. Move to Right
13. Program Set
14. Move Up

1. Basic Checklist
11
Reverse Key
- Motor rotates in reverse direction.
Stop/Reset Key
- Stop during operating.
- Trip release after a trip occurs.

1. Basic Checklist
12
Multi-function Key
Inverter Operating Status
Composition of Display
(1) Monitor Mode
(2) Parameter change display
Display Item List
The following table lists the functions and description of the keypad displays characters.
No.
Function
Display
Description
1
Mode
Display
MON
Monitor Mode
PAR
Parameter Mode
U&M
USR & Macro Mode
TRP
Trip Mode
CNF
Config Mode
2
Operating
Command
K
Keypad operation command
O
FieldBus communication option operation command
A
Application option operation command
R
Built-in 485 operation command
T
Terminal block operation command
2
Frequency
Command
K
Keypad frequency command
V
V1 input frequency command
I
I1 input frequency command
P
Pulse input frequency command
U
Frequency command during UP operation
(Up-Down operation)
D
Frequency command during DOWN operation
(Up-Down operation)
S
Frequency command during STOP operation
(Up-Down operation)
Mode Display
Monitor Mode Cursor
Status Display Item
Monitor Mode Display Item 1
Monitor Mode Display Item 2
2
Monitor Mode Display Item 3
Operating/Frequency command
command
Mode Display
Code No. and Name
Initial Value at the Time
of Product Delivery
Multi-function Key Setting
Status Display Item
Parameter Value
Settable Range
Currently Set Value
Group Display
Inverter Operating Status

1. Basic Checklist
13
O
FBus Option frequency command
X
V2, I2 frequency command of sub-terminal block
J
Jog frequency command
R
Internal 485 frequency command
1~9 A~F
Sequential frequency command
3
Multi
Function
Key Setting
JOG Key
Used for shift to Keypad JOG mode
Local/Remote
Used to select local or remote operation
UserGrp
SelKey
Used to register parameters as a user group in the
parameter mode or delete parameters in the user
group.
4
Inverter
Operating
Status
STP
Motor stopped
FWD
Operating forward
REV
Operating reversely
DC
DC outputting
WAN
Warning
STL
Stalling
SPS
Speed Searching
OSS
Software Over Current controlled
OSH
Hardware OverCurrent controlled
TUN
Auto Tuning

1. Basic Checklist
14
1.3 Parameter Change
1.3.1 Carrier Frequency Change
The following example demonstrates how to configure Carrier Frequency by modifying CON group 04
code(Carrier Frequency) from 5.00(Hz) to 10.00(Hz). You can configure the parameters for different
codes in anyother group inexactly the same way.
Step
Instruction
Keypad Display
1
Monitor Mode is displayed.
2
Shift to CON by using Mode key.
3
Shift to code 04 using Down key.
Press PROG.

1. Basic Checklist
15
4
Change the Carrier Frequency to 10 using Up key.
Press ENT.
5
The display come back to the initialization selection after
finishing Carrier Frequency Change
Adjust motor operational noise by changing carrier frequency settings. Power transistors (IGBT) in the
inverter generate and supply high frequency switching voltage to the motor. The switching speed in this
process refers to the carrier frequency. If the carrier frequency is set high, it reduces operational noise
from the motor, and if the carrier frequency is set low, it increases operational noise from the motor.
Below are advantages and disadvantages according to the sound of the inverter during operation.
Item
Carrier Frequency
LOW
HIGH
Motor noise
↑
↓
Heat generation
↓
↑
Noise generation
↓
↑
Leakage current
↓
↑

1. Basic Checklist
16
1.3.2 InitializingAll Parameters
You can initialize the parameter that has been changed bythe user to the initial state at the time of
delivery. Not only the entireparameter but a group of the parametermode can be selected and initialized.
Step
Instruction
Keypad Display
1
Monitor Mode is displayed.
2
Shift to CNF by using Mode key.
3
Shift to code 40 using Down key.
Press PROG.
4
Amongthe Parameter items to initialize, select All Groups and
press PROG.

1. Basic Checklist
17
Step
Instruction
Keypad Display
5
The display come back to the initialization selection after
finishing Initialization.
Note
Following parameter initialization, all parameters are reset to factory default values. Ensure that
parameters are reconfigured beforerunning the inverter again after an initialization.
1.3.3 Read and Write Parameters
This is the function of copying the parameter saved in the inverter to the keypad and copying the
parameter saved in the keypad to the inverter.
Group
Code
No.
Function Display
Setting Display
Unit
CNF
46
Parameter Read
1
YES
-
47
Parameter Write
1
YES
-
48
Parameter Save
1
YES
-
Read and Write Setting Details
Code
Description
CNF-46 Parameter
Read
Copies the parameter in the inverter to the keypad. The existing parameters
saved in the
keypad are all deleted.
CNF-47 Parameter
Write
Copies the parameter saved in the keypad to the inverter. The existing
parameters in the
inverter are all deleted. In case of an error during parameter writing motion,
the previously saved data can be directly
used. If there is no data saved in the keypad, a message reading “ EEP
Rom Empty “ is displayed.
CNF-48 Parameter
Save
Because the parameters set in communication are saved in the RAM area,
they are all gone
if the inverter power is turned Off/On. If you set parameters in
communication and select Yes in CNF-48 Parameter Save,
the set parameters remain unchanged even if the inverter power is turned
Off/On.
*Available on LCD keypad only.

1. Basic Checklist
18
1.4 Fault Trip Monitoring
Failure during operation
Step
Instruction
Keypad Display
1
In case of a failure during operation, the mode automatically
shifts to Trip Mode and the type of the current failure is displayed.
2
If you press Down key, the output frequency, current and
operating status at the time of the failure occurring are displayed.
3
If the failure status is terminated by Reset, the keypad before the
failure comes back.

1. Basic Checklist
19
Multiple failures at a time
Step
Instruction
Keypad Display
1
In case of multiple failures, the number of failures is displayed
next to the failure type.
Press PROG.
2
The type of failures is displayed.
Press PROG.
3
The display mode before failure checking comes back.