11-5 | LG Electronics 120S guide

Chapter 11 Troubleshooting

11.2.4Troubleshooting flowchart used when the I/O part doesn’t operate normally.

The following flowchart explains corrective action procedure used when the I/O module doesn’t operate normally.

When the I/O module doesn’t work normally.

Is the indicator LED of		No
the P40 on?
	Yes

Measure the voltage of power supply in P40

Is the	No
voltage of power supply for load
voltage of power supply for load
applied?
Yes

Correct wiring.

No

Is the output

wiring correct?

Yes

Replace the connector of the terminal board

No

Is the

terminal connector

connector appropriate?

Check the status of P40 by

KGLWIN

No

Yes

Is it normal condition?

Yes

Separate the external wiring than check the condition of output module.

Yes		No
	Is it normal condition?

Continue

Check the status of P40

Replace the Unit

11-5

Image 284

LG Electronics 120S user manual 11-5, Measure the voltage of power supply in P40

Contents

MASTER-K 120S series Safety Instructions Design Precautions Not doing so could cause a malfunction, failure or drop Poor connection could cause an input or output failure Not doing so could result in erroneous operation Such debris could cause fire, damage, or erroneous operation Not doing so could cause poisonous pollution or explosion Doing so could cause electric shock or erroneous operationNot doing so can cause a malfunction Revision History Contents Power Supply / CPU Communication I/F Module ················· 4 Input and Output Modules Usage of Various Functions100 104 Installation and Wiring Communication Function Maintenance Troubleshooting General Guide to Use This Manual Features Terminology KglwinFAM RTC Output Contact Overall Configuration Basic systemExpansion G7L-CUEB, G7L-CUEC System Configuration Cnet I/F system Communications systemMASTER-K120S MASTER-K120SMASTER-K120S 1n Communications system MASTER-K120S G7L-CUEBRS-232C ⇔ RS-422 Converter G7L-CUEC Product Functional Model Product Functional BlockMain Unit CPU Main Unit Standard type Main Unit Economic type Expansion Modules General Specifications General Specifications Main Unit PWR LEDRUN LED LED 1 60-points main unit Standard Name Description 2 40-points main unit Standard 3 30-points main unit Standard 4 20-points main unit Standard 5 30-points main unit Economic 8 10-points main unit Economic Names of Parts 6 20-points main unit Economic7 14-points main unit Economic 2 10points I/O Module Expansion I/O Module1 20points I/O Module Names of Parts 3 8points I/O Module Special Module 1 A/D·D/A Combination Module Names of Parts 2 D/A Conversion Module G7F-DA2I Names of Parts Analog timer Module RTD Input Module Fnet I/F Module Communication I/F ModuleCnet I/F Module DeviceNet I/F Module Option ModuleNames of Parts Pnet I/F Module Power Supply Specifications Standard TypeEconomic Type DR/DRT/DT60U CPU Specifications Items Specifications RemarksD0000 ~ D4999 Data register Operation modes RUN, STOP, PAUSE, Debug Items Specifications JOG RUN, STOP, Pause Power Supply / CPU Economic TypeK7M-DR10UE K7M-DR14UE K7M-DR20UE K7M-DR30UE User defined protocol support RS-485 1 port Remarks Dedicated protocol supportModbus protocol support RS-232C 1port Cnet I/F Function Cyclic operation Operation ProcessingOperation Processing Method Operation Processing at Momentary Power Failure Occurrence Momentary power failure within 10 msMomentary power failure exceeding 10 ms Interrupt operation method Power Supply / CPU Scan Time Scan Watchdog TimerSetting range of watchdog 10 ~ 6,000msunit 10ms Expression for scan time Off delay timer Power Supply / CPU Timer ProcessingOn delay timer Integral timer Monostable timer Retriggerable timer Power Supply / CPU Counter Processing Up counter CTUDown counter CTD Up-down counter Ring counter Maximum counting speedOFF T1 + T2 Classifications of Program Program Execution ProcedureProgram Interrupt Programs Scan programInterrupt program Usage of interrupt program HSC driven interrupt Parameter setting Time driven interruptProcess driven interrupt Operation mode at error occurrence Error HandlingError Classification Power Supply / CPU RUN Mode Processing when the operation mode is changedOperation processing contents Operation Modes Power Supply / CPU Stop mode Pause modeProcessing when the operation mode changes Debug modeStandard type only Operation Mode Change Operation mode change methodsDebug operation conditions Operation method Mode change Remote operation Functions Self-diagnosis Power Supply / CPU 2 I/O Force On/Off function Forced I/O setting method Power Supply / CPU Special data register for forced I/O Force on/ off Processing timing and method Power Supply / CPU Direct I/O Operation function System error historySpecial data register for error history Clear error data Memory Configuration I/O Address Allocation O No. allocation method Built-in Cnet Selection Switch ROM ModeStructure Usage Power Supply / CPU Saving the user’s program on the external memory module Installation connectorExternal Memory Module Run the PLC with a program of external memory module RTC Module Read RTC dataRead RTC data from Kglwin Following message box will be displayed Write RTC data Date expressionNumber Date Sunday Monday Tuesday Wednesday Thursday Saturday Opening/shutting of electric current Input / Output SpecificationsInput and Output Specification Digital Input Specification SpecificationCircuit diagram Main unit Input wiring DC24VDC24V Example of external devices CurrentPNP Voltage Input and Output Specification Expansion Module SpecificationsModel Expansion Module Specification It’s the same with the one for the main unit K7M-DRT40U Digital Output SpecificationMain unit Relay Output Internal Circuit Relay Economic type Model Main Unit SpecificationsCircuit Output wiring DC5V DC24VAC110/220V DC24V DC24V Model Main Unit Specifications K7M-DRT/DT20U K7M-DRT/DT30U K7M-DRT/DT40U K7M-DRT/DT60UP40,P41 24V Internal Circuit P42,P43 Internal Circuit 24V DC12V/24V AC110/220V DC5V/24V AC110/220V It’s the same with the output circuit of the main unit… … Refer to 7.2 ‘Special Functions’ for the special modules Model Expansion Module Specifications G7E-TR10ADC12/24V Performance Specifications Input specificationBuilt-in Functions High-speed counter function Names of wiring terminals Input pulse Preset inputCOM0 Input Common Input common terminal Wiring instructions External interface circuit Wiring example Pulse GeneratorVoltage output pulse generator Open collector output pulse generator InstructionHSCST HscastHigh speed counter Available device Flag Instruction Parameter Setting Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Programming example Remark Using method Usage of Various Functions Pulse Catch FunctionUsage Minimum input pulse width Remark Usage of Various Functions Input Filter Function External input signal Scan program Usage of Various Functions External Interrupt FunctionMinimum processing time Function For the details , refer to Kglwin manual Introduction Manipulation Value Kp is too large MV = KpTi Edt System response when a long integration time given MV = Kp ⋅ Td dEdt Example of integral windup Perform the auto tuning operation Where, h sampling periodPID8 Perform the PID operation Usage of Various Functions ENP ENI END Usage of Various Functions DigitalOutput = Temp.⋅10 + Tse +1 Instruction PID8PID Control Instruction Available device Flag PID Auto Tuning Available device PID8AT TPR Program ExampleKGL-WIN Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Error code list D4980 Performance specification Usage of Various Functions 1 A/D·D/A Combination moduleG7F-ADHA G7F-ADHB Voltage DC 0 ∼10V Names of parts and functions Explain about names of parts and functions G7F-ADHA① RUN LED Voltage Input Current Input G7F-ADHB Right current inputLeft voltage input Analog output terminal Voltage output Current output 4000 Wiring O converstion characteristics Analog input characteristics Voltage input Analog output characteristics Voltage output Program example Usage of Various Functions Usage of Various Functions 2 A/D Conversion module Remark ① RUN LED Be sure to use two-core twisted shield wire Analog/Digital conversion characteristics Program example Program Usage of Various Functions 3 D/A Conversion module G7F-DA2I G7F-DA2V ③ ① Parameter setting Scaling function Digital/Analog conversion characteristics G7F-DA2I ~20mA output Program example Usage of Various Functions Analog timer Name Contents Indicate the operating status the G7F-AT2AOff DC 5V power off or the G7F-AT2A module fault On normal operating Usage of Various Functions Name Contents Explain about names of parts and functions Parameter setting Digital conversion value register Error code D4880 ∼D4885BD bC bB BA b9 b8 b7 b6 B5 b4 b3 b2 B1 b0 D4880 CH1 CH0 Temperature conversion characteristics Digital conversion value4000 2000 6000 Burn-out detection function Type WireNo wiring Shield wire Wire resistance ≤10 Ω RTD input module P0000P0040 ~ P004F Main unit input contact P000 ~ P023 Positioning FunctionDRT/DT type only SpecificationItems Specification Output SpecificationP40, P41 Names of wiring terminal Internal circuit and wiring example COM1 Parameter setting Setting Incremental End Single 000 100Usage of Various Functions Positioning function Positioning function Speed Control Uniform Speed Operation Please refer to the ‘7.3.4 Instruction’ for details Operation pattern Operation methods are as follows RemarkStep No. can be assigned within 1 ~ Items of parameter Absolute End Single Operation Mode End Operation Start command PosistExample End operation Speed Absolute End Single 10,000 50,000 20,000 30,000 40,000 Keep Operation Absolute Keep Single 10,000 50,000 20,000 End 30,000 40,000 Continuous Operation Absolute Continuous Single 10,000 50,000 End 20,000 Operation Method Repeat Operation Positioning start Positioning stop Origin return method Origin Detection when Approximate origin turns offReturn to OriginPOSORG Rising edge ↑ This is the method using the approximate origin signal only Origin Detection by approximate origin Speed Override CommandPOSSOR Rising edge ↑ JOG Operation Posjog Level input External Input Stroke High/Low Limit Point Error and Output Prohibition Positioning parameter Speed Limit Backlash Compensation AmountBias Speed Origin return parameter ② Origin return-Low speedDwell Time DOG Positioning parameter Operation Mode is divided into following three kinds Usage of Various Functions Usage of Various Functions Instructions Positioning Indirect startPOSISTPosist Positioning Indirect Start Instruction Available device JOG OperationPOSJOG Positioning Indirect Start Available device Instruction Control instruction designation Positioning Control InstructionPOSCTRPosctr Current position preset Posprs Current position preset Instruction Available devicePreset value designation Posprs SV1 SV2 PWM output PWMPWM Speed control operation Instruction Available device Speed control operation PosvelPosvel Speed override Possor PossorSpeed override instruction Instruction Available device Ch. for speed override0~1 SV Speed 5 ~ 100,000pps Positioning direct startPOSDST Posdst Return to origin Instruction Available device Return to originPOSORGPosorg Device Function Description Usage of Various Functions Flag list and Error codesFlag list 101 Corrective action Code Error codeError Condition 103 H48 Wiring with stepping motor driverDC Wiring with stepping motor driver DC Wiring with servo motor driverMR-J2/J2S-A K7M-DRT**U Wiring with Servo motor driverFDA-5000 AC Servo Driver SSR Introduction Dedicated Protocol CommunicationCommunication Functions Communication Functions System configuration method Connecting system configuration link between MASTER-K’s Pmulgis PMU Pin assignment and direction Pin no Signal Communication Functions Frame Structure Base Format ETX BCC Sequence of command frameEOT BCC Communication Functions List of commands Communication Functions Data type PX000, %MX000, %LX000, %KX000, %CX000, %TX000, %FX000 Byte Communication Functions Execution of commands Individual reading of deviceRrSS Response format ACK response Response format NAK response Continuous readingRrSB of device Wordw EOT Blocksetting can be repeated up to max blocks Explanation Individual writing of deviceWwSS NAK H00FF EOT BCC Continuous writing of deviceWwSB H10 Format name Header Station Monitor registerX## RSSBlockmax blocks ② Continuous reading of device RSB H06 H3130 H5878 H3039 H03 RSS Monitor executionY## Command Registration Error code Tail Pause Debug Mode Bit Local Remote ConnectionReading PLC StatusRST 3041 5272 5354 31313332 G7E-DR10A Parameter setting Cuec Communication Functions Flag related with operating status Normal RUN Pause Debug Example Protocol Mode ④ Set parameters as the following table Communication Method Communication Functions Communication Functions Communication Functions Error code Error code Error type Error condition and causes Treatment User Defined Protocol Communication Parameter SettingSetting Communications Parameter Setting frame VTH0B Communication Functions FFH0C CRH0D SOH0E MUL SUMXOR Communication Functions Type setting Kinds Value of sum check Last transmitting frameAscii Type Hex Type 05 31 32 33 34 04 30 Ascii Type Hex Type 05 31 32 33 34 04 36 Communication Functions Communication Functions Instruction User defined communication instructionSNDCOMExample of program Sndcom Example of Usage Communication Functions Communication Functions Communication Functions Setting and program of slave station Communication Functions Communication Functions Communication Functions Communication Functions Basic Specification Ascii modeRTU mode Modbus Protocol Communication Address area Function code areaData area LRC Check/CRC Check area Size of using data Function code types and memory mappingModbus addressing rules H5000 Area Areacurrent value area H6000 Setting communication parameter Parameters SettingMap of wiring PLC Modcom Communication Functions Instruction and exampleModbus communication instructionMODCOM Remark Example program Coil Status Input Communication Functions Receiving Data No Protocol CommunicationSending Data Parameter setting Error flag turns on, when designating area is over Communication Functions InstructionsNo protocol receiveDRCV Drcv No protocol sendDSND Dsnd Communication Functions Examples Communication Parameter Setting Program Remote connection by built-in Cnet I/F Remote connection and communication I/F moduleRemote connection Remote connection by modem Remote connection by Fnet I/F module Master Slave Wiring Example RS-422 I/F Usage of G7L-CUEBUsage of G7L-CUEC OFF Must be off Wiring Example RS-485 I/F Usage of G7L-FUEA/RUEARDB SDA SDB SG Master Slave Usage of G7L-PBEA/DBEA Installation Installation EnvironmentPrecautions during installing Environment requirements Power consumption block diagram of PLC systems Power consumption of each partPower Input Supply Part Handling Instructions Main unit or Expansion Module handling instructions Mounting instructions OUTOutput part COM OUT 100mm or more Heat generating device Installation and Wiring Connection of expansion module Wiring Power Supply WiringPower Main circuit Device ※ T1,T2 constant voltage transformer Input and Output Devices Wiring Input Installation and Wiring Grounding Cable Specifications for wiring LED ERR LED Maintenance and InspectionDaily Inspection Periodic Inspection 10-2 Basic Procedures of Troubleshooting Troubleshooting Yes Kglwin 11-4 Turn the power unit off and on Is RUN LED off?Contact the nearest service center Measure the voltage of power supply in P40 11-5 11-6 11-7 Troubleshooting Questionnaire Troubleshooting Examples Input circuit troubles and corrective actions Output circuit troubles and corrective actions 11-10 11-11 Surge current of 10 times or more when turned onTransistor 1/3 to 1/5 rated current flow Destroyed Error code List 11-12 Error CPU state Message Cause Corrective Actions Code 11-13 Appendix 1 System Definitions Option Editor option Appendix 1 System Definitions Basic Parameters Always Off Appendix 2 Flag ListSpecial relay F Operation error flag Operation error flag LatchOverflow error flag Relay Function F0040 to F005F Internal relay M Data relay D App2-4 App2-5 App2-6 App2-7 Clock data Relay Description App2-8 Standard type 95 105 App3-1 Appendix 3 External DimensionsExtension module Appendix 3 External Dimensions