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?