Maintenance and Inspection, Daily Inspection | LG Electronics 120S

Chapter 10 Maintenance

Chapter 10 Maintenance

Be sure to perform daily and periodic maintenance and inspection in order to maintain the PLC in the best conditions.

10.1Maintenance and Inspection

The I/O module mainly consist of semiconductor devices and its service life is semi-permanent. However, periodic inspection is requested for ambient environment may cause damage to the devices. When inspecting one or two times per six months, check the following items.

	Check Items					Judgment			Corrective Actions

			Temperature			0 ~ + 55°C			Adjust the operating temperature and humidity with the
	Ambient								defined range.
	Ambient		Humidity			5 ~ 95%RH			defined range.
	environment
	environment		Vibration			No vibration			Use vibration resisting rubber or the vibration prevention
									Use vibration resisting rubber or the vibration prevention
									method.
									method.

	Play of modules					No play allowed			Securely enrage the hook.

	Connecting conditions of					No loose allowed			Retighten terminal screws.
	terminal screws					No loose allowed			Retighten terminal screws.
	terminal screws

	Change rate of input voltage					− 15% to 10%			Hold it with the allowable range.

						Check the number of
	Spare parts					Spare parts and their			Cover the shortage and improve the conditions
						Store conditions

10.2Daily Inspection

The following table shows the inspection and items which are to be checked daily.

Check Items

Check Points

Judgement

Corrective

Actions

Connecting conditions

check for loose mounting screws

Screws should not be loose

Retighten

Screws

of terminal block or

Check the distance between solderless

extension cable

Proper clearance should be provided

Correct

terminals

PWR LED

Check that the LED is ON

ON(OFF indicates an error)

See chapter 11

Run LED

Check that the LED is ON during Run

ON (flickering indicates an error)

See chapter 11

LED

ERR LED

Check that the LED is OFF during Run

OFF(ON indicates an error)

See chapter 11

status

Input LED

Check that the LEO turns ON and OFF

ON when input is ON,

See chapter 11

OFF when input is off

Output LED

Check that the LEO turns ON and OFF

ON when output is ON,

See chapter 11

OFF when output is off

10-1

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LG Electronics 120S user manual Maintenance and Inspection, Daily Inspection, Led Err Led

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 ················· 4 100 Input and Output ModulesUsage of Various Functions 104 Installation and Wiring Communication Function Maintenance Troubleshooting General Guide to Use This Manual Features FAM TerminologyKglwin RTC Output Contact Expansion Overall ConfigurationBasic system G7L-CUEB, G7L-CUEC MASTER-K120S System Configuration Cnet I/F systemCommunications system MASTER-K120SMASTER-K120S RS-232C ⇔ RS-422 Converter 1n Communications systemMASTER-K120S G7L-CUEB G7L-CUEC Main Unit Product Functional ModelProduct Functional Block CPU Main Unit Standard type Main Unit Economic type Expansion Modules General Specifications General Specifications RUN LED Main UnitPWR 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 Economic Type Power Supply SpecificationsStandard Type DR/DRT/DT60U D0000 ~ D4999 Data register Operation modes CPU SpecificationsItems Specifications Remarks 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 Momentary power failure exceeding 10 ms Operation Processing at Momentary Power Failure OccurrenceMomentary power failure within 10 ms Interrupt operation method Setting range of watchdog 10 ~ 6,000msunit 10ms Power Supply / CPU Scan TimeScan Watchdog Timer Expression for scan time Off delay timer Power Supply / CPU Timer ProcessingOn delay timer Integral timer Monostable timer Retriggerable timer Down counter CTD Power Supply / CPU Counter ProcessingUp counter CTU Up-down counter OFF Ring counterMaximum counting speed T1 + T2 Classifications of Program Program Execution ProcedureProgram Interrupt program Interrupt ProgramsScan 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 Operation processing contents RUN ModeProcessing when the operation mode is changed Operation Modes Processing when the operation mode changes Power Supply / CPU Stop modePause mode Debug modeStandard type only Debug operation conditions Operation Mode ChangeOperation mode change methods 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 Special data register for error history Power Supply / CPU Direct I/O Operation functionSystem error history Clear error data Memory Configuration I/O Address Allocation O No. allocation method Structure Built-in Cnet Selection SwitchROM Mode 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 Read RTC data from Kglwin RTC ModuleRead RTC data Following message box will be displayed Number Date Sunday Monday Tuesday Wednesday Thursday Write RTC dataDate expression Saturday Opening/shutting of electric current Input / Output SpecificationsInput and Output Specification Circuit diagram Digital Input SpecificationSpecification Main unit Input wiring DC24VDC24V PNP Example of external devicesCurrent Voltage Model Expansion Module Specification Input and Output Specification Expansion ModuleSpecifications 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 AC110/220V Output wiringDC5V DC24V DC24V DC24V P40,P41 24V Internal Circuit Model Main Unit SpecificationsK7M-DRT/DT20U K7M-DRT/DT30U K7M-DRT/DT40U K7M-DRT/DT60U 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 Built-in Functions Performance SpecificationsInput specification High-speed counter function COM0 Names of wiring terminalsInput pulse Preset input Input Common Input common terminal Wiring instructions External interface circuit Voltage output pulse generator Wiring examplePulse Generator Open collector output pulse generator High speed counter Available device InstructionHSCSTHscast 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 Usage Using methodUsage of Various Functions Pulse Catch Function Minimum input pulse width Remark Usage of Various Functions Input Filter Function Minimum processing time External input signal Scan programUsage of Various Functions External Interrupt Function 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 PID8 Perform the auto tuning operationWhere, h sampling period Perform the PID operation Usage of Various Functions ENP ENI END Usage of Various Functions DigitalOutput = Temp.⋅10 + Tse +1 PID Control Instruction Available device InstructionPID8 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 G7F-ADHA G7F-ADHB Performance specificationUsage of Various Functions 1 A/D·D/A Combination module Voltage DC 0 ∼10V ① RUN LED Names of parts and functionsExplain about names of parts and functions G7F-ADHA Voltage Input Current Input Left voltage input G7F-ADHBRight current 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 Off DC 5V power off or the G7F-AT2A module fault Usage of Various Functions Analog timerName Contents Indicate the operating status the G7F-AT2A On normal operating Usage of Various Functions Name Contents Explain about names of parts and functions BD bC bB BA b9 b8 b7 b6 B5 b4 b3 b2 B1 b0 D4880 Parameter setting Digital conversion value registerError code D4880 ∼D4885 CH1 CH0 4000 2000 Temperature conversion characteristicsDigital conversion value 6000 Burn-out detection function Type WireNo wiring Shield wire Wire resistance ≤10 Ω P0040 ~ P004F RTD input moduleP0000 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 Usage of Various Functions Positioning function Parameter settingSetting Incremental End Single 000 100 Positioning function Speed Control Uniform Speed Operation Please refer to the ‘7.3.4 Instruction’ for details Step No. can be assigned within 1 ~ Items of parameter Operation patternOperation methods are as follows Remark Absolute End Single Example End operation Speed Operation Mode End OperationStart command Posist 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 Dwell Time Origin return parameter② Origin return-Low speed DOG Positioning parameter Operation Mode is divided into following three kinds Usage of Various Functions Posist Usage of Various Functions InstructionsPositioning Indirect startPOSIST Positioning Indirect Start Instruction Available device JOG OperationPOSJOG Positioning Indirect Start Available device Instruction Control instruction designation Positioning Control InstructionPOSCTRPosctr Preset value designation Current position preset PosprsCurrent position preset Instruction Available device Posprs SV1 SV2 PWM output PWMPWM Speed control operation Instruction Available device Speed control operation PosvelPosvel Speed override instruction Instruction Available device Speed override PossorPossor 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 Blockmax blocks ② Continuous reading of device Monitor registerX##RSS 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 Ascii Type Hex Type 05 31 32 33 34 04 30 Type settingKinds Value of sum check Last transmitting frame Ascii Type Hex Type 05 31 32 33 34 04 36 Communication Functions Example of program Communication Functions InstructionUser defined communication instructionSNDCOM Sndcom Example of Usage Communication Functions Communication Functions Communication Functions Setting and program of slave station Communication Functions Communication Functions Communication Functions Communication Functions RTU mode Basic SpecificationAscii mode Modbus Protocol Communication Data area Address areaFunction code area LRC Check/CRC Check area Modbus addressing rules Size of using dataFunction code types and memory mapping 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 No protocol receiveDRCV Error flag turns on, when designating area is overCommunication Functions Instructions 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 Usage of G7L-CUEC Master Slave Wiring Example RS-422 I/FUsage of G7L-CUEB OFF Must be off RDB SDA SDB SG Wiring Example RS-485 I/FUsage of G7L-FUEA/RUEA Master Slave Usage of G7L-PBEA/DBEA Precautions during installing InstallationInstallation Environment Environment requirements Power Input Supply Power consumption block diagram of PLC systemsPower consumption of each part Part Handling Instructions Main unit or Expansion Module handling instructions Output part Mounting instructionsOUT COM OUT 100mm or more Heat generating device Installation and Wiring Connection of expansion module Power Main circuit Device WiringPower Supply Wiring ※ 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 Overflow error flag Operation error flagOperation error flag Latch 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