LSIS H100 Troubleshooting Manual
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LSIS H100 Troubleshooting Manual

Ac variable speed drive
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5.5~18.5kW(200V), 5.5~90kW(400V)
AC Variable Speed Drive
H100 Troubleshooting Manual
Safety Instructions
Read this manual carefully before servicing or inspecting this equipment.
Keep this manual within easy reach for quick reference.

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Summary of Contents for LSIS H100

  • Page 1 5.5~18.5kW(200V), 5.5~90kW(400V) AC Variable Speed Drive H100 Troubleshooting Manual Safety Instructions Read this manual carefully before servicing or inspecting this equipment. Keep this manual within easy reach for quick reference.
  • Page 2 Quick Reference Table The following table listed situations frequently encountered while working with inverters. Refer to the typical situations to quickly and easily locate solutions to your questions. Situation Reference The motor is too noisy. P. 33 I want to review recent fault trip and warning histories. P.
  • Page 3  INTRODUCTION Manual Composition  PRODUCT IDENTIFICATION  ASSOCIATION MANUAL  SAFETY INFORMATION  REVISION RECORD Contents 1 BASIC CHECKLIST Before you think it failed Basic Operations Parameter Change 1.3.1 Carrier Frequency Change 1.3.2 Initializing All Parameters 1.3.3 Read and Write Parameters Fault Trip Monitoring 2 TROUBLESHOOTING Trips and Warning...

  • Page 4: Introduction

    2.1.1 Failure/Warning List This section explains troubleshooting fault trips and other common faults. 2.1.2 Troubleshooting Fault Trips If problems are not solved, please contact your vendor or LSIS. 2.2 Troubleshooting Other Fault 3 Maintenance 3.1 Regular Inspection List 3.1.1 Daily Inspections...

  • Page 5: Product Identification

    Product Identification Note The H100 75/90 kW, 400 V inverters satisfy the EMC standard EN61800-3 without installation of optional EMC filters. Association Manual H100 user manual can be downloaded through LSIS homepage. Link : http://www.lsis.com/support/download/...

  • Page 6: Safety Information

    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 hazardous situation which, if not avoided, will result in severe injury or death.
  • Page 7 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 repaired.  The Inverter becomes hot during operation. Avoid touching the Inverter until it has cooled down to avoid burns.

  • Page 8: Revision Record

    Revision Record Version Date Changed main contents Reference Page V1.0 2016.10 1. First edition...

  • Page 9: Basic Checklist

    Basic Checklist Before you think it failed Items Check Point Result Is the installed location appropriate? Installed Does the environment meet the inverters operating conditions? Environment / Input/Output Does the power source match the inverter’s rated input? voltage Is the rated output of the inverter sufficient to supply the equipment? Is the 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...
  • Page 10 1. Basic Checklist Items Check Point Result 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? Control Terminal Are the control cables properly wired? Wiring...

  • Page 11: Basic Operations

    1. Basic Checklist Basic Operations  Key Functions Refer to the following illustration to identify part names and functions 14. UP Key 13. PROG / Ent Key 1. ESC Key 12. RIGHT Key 2. LEFT Key 11. MULTI Key 3. MODE Key 10.
  • Page 12 1. Basic Checklist keypad display Monitor mode. [HAND] Key Used to switch to HAND (local/manual) operation mode. [OFF] Key Used to switch to OFF (standby) mode or to reset the inverter faults. [AUTO] Key Used to switch to AUTO (remote) operation mode.
  • Page 13 1. Basic Checklist  Composition of Display (1) Monitor Mode Multi-function Key Operating/Frequency Inverter Operating Status Rotational direction command Mode Display Status Display Item Monitor Mode Cursor Monitor Mode Display Item 1 Monitor Mode Display Item 2 Monitor Mode Display Item 3 (2) Parameter change display Group Display Multi-function Key...
  • Page 14 1. Basic Checklist (Up-Down operation) Frequency command during DOWN operation (Up-Down operation) Frequency command during STOP operation (Up-Down operation) FBus Option frequency command Jog frequency command Internal 485 frequency command 1 ~7 Multi-step frequency command Multi UserGrp Used to register parameters as a user group in the parameter Function SelKey mode or delete parameters in the user group.

  • Page 15: Parameter Change

    1. Basic Checklist 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 3.00(Hz) to 10.00(Hz). You can configure the parameters for different codes in any other group in exactly the same way. Step Instruction Keypad Display...
  • Page 16 1. Basic Checklist Change the Carrier Frequency to 10 using Up key. Press ENT. 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.

  • Page 17: Initializing All Parameters

    1. Basic Checklist 1.3.2 Initializing All Parameters You can initialize the parameter that has been changed by the user to the initial state at the time of delivery. Not only the entire parameter but a group of the parameter mode can be selected and initialized. Step Instruction Keypad Display...

  • Page 18: Read And Write Parameters

    1. Basic Checklist Step Instruction Keypad Display In the list of options, select ‘1(All Grp),’ and then press the [PROG/ENT] key to perform parameter initialization. The parameter initialization option is displayed again when the initialization is complete. Note Following parameter initialization, all parameters are reset to factory default values. Ensure that parameters are reconfigured before running the inverter again after an initialization.

  • Page 19: Fault Trip Monitoring

    1. Basic Checklist Fault Trip Monitoring  Failure during operation Step Instruction Keypad Display If a fault trip occurs during inverter operation, the inverter enters Trip mode automatically and displays the type of fault trip that occurred. Press the [Down] key to view the information on the inverter at the time of fault, including the output frequency, output current, and operation type.
  • Page 20 1. Basic Checklist  Multiple failures at a time Step Instruction Keypad Display If multiple fault trips occur at the same time, the number of fault trips occurred is displayed on the right side of the fault trip type. Press the [PROG/ENT] key to view the list of all the fault trips. The list of all the fault trips is displayed.
  • Page 21 1. Basic Checklist  Saving and monitoring of failure history Step Instruction Keypad Display In case of a failure during operation, the mode automatically shifts to Trip Mode with the trip displayed. If you press Reset or the terminal is entered, the failure above Automatically saved and the display goes back to the place before the failure.

  • Page 22: Troubleshooting

    Inverter. If the Inverter still failed, please contact the supplier or LSIS Customer Service Center. 2.1.1 Failure/Warning List The following table shows a list of faults and warning signals that can occur while operating H100. Category LCD Display Details...
  • Page 23 2. Troubleshooting Category LCD Display Details Page Input open-phase fault trip In Phase Open P.28 Ground fault trip Ground Trip P.27 FanTrip Fan fault trip P.29 Motor overheat fault trip E-Thermal P.27 IO Board Trip IO Board connection fault trip No motor fault trip No Motor Trip Low voltage fault trip during...
  • Page 24 2. Troubleshooting Category LCD Display Details Page Low voltage fault trip Low Voltage P.26 Emergency stop fault trip Level Lost Command Command loss trip Lost keypad trip Lost Keypad EEP Err External memory error Analog input error ADC Off Set Fatal IO Board connection fault trip IO Board Trip...
  • Page 25 2. Troubleshooting Category LCD Display Details Page Lost keypad warning Lost Keypad Load curve tunning warning Load Tune Broken Belt Broken belt warning Smart copier error warning ParaWrite Fail Rs Tune Err Auto tunning warning(Rs) Auto tunning warning(Lsigma) Lsig Tune Err Note •...

  • Page 26: Troubleshooting Fault Trips

    Refer to 3.1.4 Check Input/Output Module to identify the fault cause of the output module (IGBT). There is a fault with the output module (IGBT). DO NOT operate the inverter. Contact the retailer or the LSIS Customer Service Center. The mechanical brake of the Check the mechanical brake.
  • Page 27 Refer to 3.1.4 Check Input/Output Module to identify the fault cause of the output module (IGBT). There is a fault with the output module (IGBT). DO NOT operate the inverter. Contact the retailer or the LSIS Customer Service Center. Keypad Display Type...
  • Page 28 2. Troubleshooting Keypad Display Type Description Occurs when the DC circuit voltage is lower than the specified Low Voltage2 Voltage Latch value during inverter operation Trip2 Problem Solution The input voltage has decreased Check whether the input voltage is lower than the specified value. during the operation.
  • Page 29 The input wiring is faulty. Check the input wiring. Replace the DC condenser. The DC condenser needs to be replaced. Contact the retailer or the LSIS Customer Service Center. Keypad Display Type Description Occurs when the overload time equivalent to 60% of the inverter Inverter overheat protection (inverter IOLT) level, is accumulated.
  • Page 30 Problem Solution The ambient temperature is too Keep the ambient temperature above -10 ℃ There is a fault with the internal Contact the retailer or the LSIS customer service center. temperature sensor. Keypad Display Type Description Occurs when there is a problem with the cooling fan.

  • Page 31: Troubleshooting Other Fault

    2. Troubleshooting Troubleshooting Other Fault Refer to the following tables for solutions other than fault trips or warnings Setting parameters is not working. Problem Solution Stop the inverter and change to program mode and set The inverter is operating (inverter mode). the parameters.
  • Page 32 2. Troubleshooting The motor rotates in the opposite direction to the command. Problem Solution The wiring of the motor output cable is Check whether the output side is wired correctly to the incorrect. phase (U/V/W) of the motor. The rotation signal connection between the control circuit terminal (forward/reverse rotation) Check the forward/reverse rotation wiring.
  • Page 33 2. Troubleshooting The motor stopped when accelerated or connected to load. Problem Solution Reduce the load. The load is too high. Replace the motor and inverter appropriate to inverter capacity. The motor does not accelerate. / The acceleration time is too long. Problem Solution The frequency command is too low.
  • Page 34 2. Troubleshooting The deceleration time is too long even with the Dynamic Breaking resistor connected to the motor. Problem Solution The deceleration time is set too long. Change the setting accordingly. If there is no problem with motor parameters, this is due to The motor torque is insufficient.
  • Page 35 2. Troubleshooting Slightly change the command frequency There is resonance between the motor’s natural frequency and the inverter’s output frequency. Use the frequency jump function to avoid resonance. The motor vibrates / hunts. Problem Solution Change the input filter time constant if there are The frequency input demand was externally set interferences in the frequency command due to noise to analog command.

  • Page 36: Maintenance

    3. Maintenance Maintenance This chapter covers regular inspections for different time periods, how to replace the cooling fan, and how to properly store and dispose Inverters. The surrounding environment highly affects the conditions of the inverters. Meaning, improper management will wear down the components and lead to malfunction.

  • Page 37: Annual Inspections

    3. Maintenance Check the Measuring Is the display value Check the rated, Voltmeter, Display display value on device normal? managerial value ammeter, etc. the panel Is there any unusual Visual vibration or noise? inspection Motor All clear Check for Is there any unusual overheat or smell (odor)? damage...

  • Page 38: Bi-Annual Inspections

    3. Maintenance Part Category Check points Method Standard Equipment Remove one Must be within Check disconnection side and ±10% of the rated measure resistance Phase-to-phase Measure Check imbalance of voltage balance: voltage output voltage between output Within 4V for 200V during operation terminal U/V/W Within 8V for 400V...

  • Page 39: Check Input/Output Module

    3. Maintenance 3.1.4 Check Input/Output Module How to check the diode module and IGBT module (5.5~30kW) Testing method 1) Disconnect all power cables (R,S,T) and motor output cables (U,V,W). 2) Before testing, check the discharge of electrolytic capacitor (DCP-DCN). 3) When the circuit is open, DMM will indicate high resistance (several MΩ). In some situations, the DMM may display a closed circuit (low resistance) and then show high resistance due to the capacitors.
  • Page 40 3. Maintenance How to check the diode module and IGBT module (37~90kW) Testing Method 1) Disconnect all power cables (R,S,T) and motor output cables (U,V,W). 2) Before testing, check the discharge of electrolytic capacitor (DCP-DCN). 3) When the circuit is open, DMM will indicate high resistance (several MΩ). In some situations, the DMM may display a closed circuit (low resistance) and then show high resistance due to the capacitors.
  • Page 41 3. Maintenance  Example) Checking diode module and IGBT module Checking Diode D2 1) Measure the resistance of D2 by placing the red lead (positive terminal of DMM) on S phase and the black lead (negative terminal of DMM) on P. ...
  • Page 42 3. Maintenance Checking IGBT Tr6 1) Measure the resistance of Tr6 by placing the red lead (positive terminal of DMM) on N and the black lead (negative terminal of DMM) on V phase.  If the resistance indicated on DMM is several hundred kΩ or less, it is acceptable. 2) Measure the resistance of Tr6 by placing the read lead (positive terminal of DMM) on V phase and the black lead (negative terminal of DMM) on N.

  • Page 43: Replace Cooling Fan

    3. Maintenance 3.1.5 Replace Cooling FAN If the inverter continued to operate after the cooling fan trip took place, a protective function will be activated due to overheat in the cooling fan. Increase in temperature may reduce the lifespan of major components.
  • Page 44 3. Maintenance Replacement of 37~55kW FAN 1) Remove ❶ screws to separate the fan bracket from the inverter. 2) Disconnect the fan wire and remove ❷ screws. Replacement of 75~90kW FAN 1) Remove ❶ screws to separate the fan bracket from the inverter. 2) Disconnect the fan wire and remove ❷...

  • Page 45: Storage And Disposal

    3. Maintenance Caution  Turn off the inverter before replacing the fan. There is a possibility of an electric shock due to the charge voltage. Wait until the inverter is fully discharged to replace the fan. (The time to discharge varies per capacity, in average 1~3 minutes after turning off the inverter). ...

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