LSIS S100 Series Troubleshooting Manual
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LSIS S100 Series Troubleshooting Manual

Ac variable speed drive 0.4~22kw(200v/400v)
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See also: Operating Manual , Setup Manual
0.4~22kW(200V/400V)
AC Variable Speed Drive
S100 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 S100 Series

  • Page 1 0.4~22kW(200V/400V) AC Variable Speed Drive S100 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. 30 I want to review recent fault trip and warning histories. P.

  • Page 3: Table Of Contents

    INTRODUCTION PRODUCT IDENTIFICATION ASSOCIATION MANUAL SAFETY INFORMATION REVISION RECORD Contents 1 BASIC CHECKLIST 1.1 Before You Think It Failed 1.2 Basic Operations 1.3 Change Parameter 1.3.1 Change Carrier Frequency 1.3.2 Initialize All Parameters 1.3.3 Read and Write Parameters 1.4 Monitor Fault Trip 2 TROUBLESHOOTING 2.1 Trips and Warnings 2.1.1 Failure/Warning List...

  • Page 4: Introduction

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

  • Page 5: Product Identification

    Power source specifications Output spec. Motor Capacity Series Name Input voltage 1 - Single phase 200V 2 - 3 phase 200V 4 - 3 phase 400V Filter Association Manual S100 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 2016.06 1. First edition...

  • Page 9: Basic Checklist

    Basic Checklist Basic Checklist 1.1 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?
  • 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? Are the control cables properly wired? Control Terminal Wiring...

  • Page 11: Basic Operations

    1. Basic Checklist 1.2 Basic Operations  Display keys Refer to the following illustration to identify part names and functions. Key name Function Description ❶ 7-segment display Displays running condition and parameter information. ❷ SET lamp Flickers when setting parameter or the [ESC] key is multi-functioning. Turns on when running and flickers when accelerating or ❸...
  • Page 12 1. Basic Checklist  Operation Keys Key name Function Description [RUN] Run command. STOP: Stops during operation. [STOP/RESET] RESET: Trip release after trip occurs. [▲], [▼] Movement among codes or increases/decreases the parameter value. [◀], [▶] Movement among groups or digits when setting parameter. [ENT] Changes the parameter setting or saves the changed parameter value.

  • Page 13: Change Parameter

    1. Basic Checklist 1.3 Change Parameter 1.3.1 Change Carrier Frequency The following example demonstrates how to configure carrier frequency by modifying CN.4 from 15Hz to 5 Hz. It is possible to configure the parameters for different codes in any other group in the same method.

  • Page 14: Initialize All Parameters

    1. Basic Checklist Adjust motor operational noise by changing the carrier frequency settings. Power transistors (IGBT) in the Inverter generate and supply high frequency switching voltage to the motor. Carrier frequency is the switching speed in this process. If the carrier frequency is set high, it reduces operational noise from the motor.

  • Page 15: Read And Write Parameters

    1. Basic Checklist Step Instructions Keypad Display Press [ENT] once more. dr.93 code is currently set to 0(No-do not initialize). Press [▲] and change to 1(All Grp-initialize all group) then press [ENT]. The set parameter flickers. Press [ENT] again. D r . 9 3 Initializing has started.

  • Page 16: Monitor Fault Trip

    1. Basic Checklist 1.4 Monitor Fault Trip The following shows an example procedure how to monitor trips in Operation group. Accelerating Over Current A C C Trip Current 5 . 0 Frequency 3 0 . 0 3 0 . 0 O C T Step Instructions...
  • Page 17 1. Basic Checklist  Check Trip History The table below is an example how to monitor trip history. Group Code Code Description Set value Set range Initial Value Unit Pr91 Fault History 1 Function Group 2 Pr95 Fault History 5 Pr96 Delete Fault History 0 ~ 1...

  • Page 18: Troubleshooting

    • Fatal: After the fault is corrected, the trip or warning signal disappears when conducted the following procedure. Turn off the Inverter and wait until the charge indicator light goes off. Then, turn on the Inverter. If the Inverter still failed, please contact the supplier or LSIS Customer Service Center.

  • Page 19: Failure/Warning List

    2. Troubleshooting 2.1.1 Failure/Warning List The following table shows a list of faults and warning signals that can occur while operating S100. Category LCD Display Details Page Over Current1 Trip from to overcurrent P. 20 Over Voltage Trip from overvoltage P.
  • Page 20 2. Troubleshooting Category LCD Display Details Page Low Voltage Trip due to low voltage P. 21 Trip from Emergency stop Level Lost Command Trip from lost command Safety A(B) Err Safety contact A(b) trip EEP Err External memory error ADC Off Set Analog input error Fatal Watch Dog-1...

  • Page 21: Troubleshooting Fault Trips

    2. Troubleshooting 2.1.2 Troubleshooting Fault Trips Refer to the following tables for solutions to fault trips or warnings. Keypad Display Type Description Occurs when the motor load exceeds the value that was set O L T Overload Trip Latch for the motor overload trip. Operation will resume after setting Pr.20 at a value other than 0.
  • Page 22 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 23 The actual DC link voltage is different Need to inspect the Hardware. from the value on the display. Contact the retailer or the LSIS Customer Service Center. Acc/Dec time is too short compared Increase Acc/Dec time. to the load inertia (GD2).
  • Page 24 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 Out Phase Occurs when one of the three output phases is phase open.
  • Page 25 2. Troubleshooting Keypad Display Type Description Occurs when the temperature of the heat sink exceeds the O H T Overheat Trip Latch specific value. Problem Solution There is a problem with the cooling Check whether there are any external substances (dust, etc.) in the system.
  • Page 26 - ADC Off Set: Problem with the current detective devices (U/V/W terminal, current sensors, etc.) Occurs when there is a problem with the thermal (detecting) n T C NTC Trip Latch sensors in IGBT. Problem Solution Hardware inspection is needed. Contact the retailer or the LSIS Customer Service Center.

  • Page 27: Troubleshooting Other Faults

    2. Troubleshooting 2.2 Troubleshooting Other Faults 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 28 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 29 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 30 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 31 2. Troubleshooting The motor vibrates intensely and does not rotate normally. Problem Solution Check the input voltage and stabilize the voltage. The phase-to-phase voltage of 3-phase power source is not balance. Check and test the insulation of the motor. The motor makes humming or loud noises. Problem Solution There is resonance between the motor’s natural...
  • Page 32 2. Troubleshooting The stall prevention function is not working due Replace the inverter with a bigger capacity. to high load. The cooling fan does not rotate. Problem Solution The control parameter for the cooling fan is set Check the control parameter settings for the cooling fan. incorrectly.

  • Page 33: 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 34: Annual Inspections

    3. Maintenance turned off 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)?

  • Page 35: Bi-Annual Inspections

    3. Maintenance Part Category Check points Method Standard Equipment Is there any damage Visual All clear on the resistors? inspection Digital multimeter Resistors Remove one Must be within / Analog tester Check disconnection side and ±10% of the rated measure resistance Phase-to-phase Measure...

  • Page 36: Check Input/Output Module

    3. Maintenance 3.1.4 Check Input/Output Module How to check the diode module and IGBT module (0.4~22kW 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 37 3. Maintenance How to check the diode module and IGBT module (30~75kW) 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 38 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 39 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 40: 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 41 3. Maintenance Replacement of 5.5~22kW 1) Remove the fan cover by pressing the hook located by the arrow. 2) Disconnect the fan wire and remove the fan from the inverter. Replacement of 30~75kW 1) Remove ① screws to separate the fan bracket from the inverter. 2) Disconnect the fan wire and remove ②...
  • Page 42 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). ...

  • Page 43: Storage And Disposal

    3. Maintenance 3.2 Storage and Disposal 3.2.1 Storage Store the products in the following conditions listed below (if not used for a long period of time).  Store the product in the same appropriate environmental conditions as in operation.  If the product will be stored more than 3 months, keep the ambient temperature between - 10℃~30℃...

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