Omron CPM1A operation manual Design Precautions, Power Supply Wiring, Interlock and Limit Circuits

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Design Precautions	Section 3-1

3-1 Design Precautions

Observe the following precautions when designing a system incorporating a

CPM1A PC.

3-1-1 Power Supply Wiring

Separate the power supply wiring from the control system, CPM1A system, and

DC I/O system wiring. Separate the control circuits that supply power to the main

Unit from the main circuits using dedicated circuit protectors and fuses.

3-1-2 Interlock and Limit Circuits

!WARNING Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must be provided in external control circuits (i.e., not in the Programmable Controller) to ensure safety in the system if an abnormality occurs due to malfunction of the PC or another external factor affecting the PC operation. Not providing proper safety measures may result in serious accidents.

Construct an external interlock circuit if CPM1A outputs are used to perform reciprocal operations such as controlling the forward and reverse operation of a motor or if incorrect PC operation could cause accidents or mechanical damage. Also, construct an external limit circuit to prevent run-away movement in sys- tems such as position control.

The following diagram shows an example of an interlock circuit.

CPM1A

Interlock Circuit

01005 MC2

MC1 Motor forward

01006 MC1

MC2 Motor reverse

In the interlock circuit above, MC1 and MC2 can’t be ON at the same time even if

CPM1A outputs 01005 and 01006 are both ON (an incorrect PC operation).

3-1-3 Power Supply Voltage

!Caution Use the power supply voltages indicated in Section 2 Unit Specifications and Components. Failure to adhere to the specifications may result in fire. In places where power supply conditions are poor, take steps to ensure that power is sup- plied at the rated voltage. Be sure to adhere to safety precautions, such as pro- viding breakers to prevent short circuits in external wiring. When conducting any of the following operations, turn OFF the power to the PC. Electric shock, prod- uct damage and malfunction may result.

•Connecting or disconnecting Expansion I/O Units and CPU Units.

•Assembling Units

•Connecting cables and wiring.

3-1-4 CPM1A Power Interruptions

Supply Voltage Drop

When the supply voltage falls below 85% of the rated value, the PC will stop and the outputs will go OFF.

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Contents CPM1A CPM1A Programmable Controllers  Omron Omron Product ReferencesTable of Contents Appendices About this Manual Precautions Safety Precautions General PrecautionsIntended Audience Application Precautions Operating Environment PrecautionsXiv Application Precautions Backup method Data Applicable Directives EC DirectivesConcepts Conformance to EC DirectivesXviii Section 1 CPM1A Features CPM1A Features and FunctionsSection NT Link Communications CompoBus/S I/O Link Units Using the PTStandard Peripheral Devices Programming is PossibleCPU Units 2 I/O Terminal and IR Bit AllocationExpansion I/O Units Unit Relay output Transistor output Sink type Source type3 CPM1A Functions Control Corresponding IR word Setting range BCDSet value Word Word 001 or later PC model Input bits Response time PC model Input bits Min. input pulse width Mode FunctionPulse output single-phase output CompoBus/S Slave Functions CPM1A-SRT21 Temperature Sensor Unit FunctionsCPU Unit and Expansion I/O Unit Configuration System ConfigurationCPU Unit and Expansion Unit CPM1A CPU UnitsUnit Max. number Inputs Outputs Model Units Expansion I/O UnitsExpansion Units Host Link CommunicationsProgrammable Terminal Connecting to aAdapters and Cables One-to-one PC Link CommunicationsName Usage Model number One-to-one NT Link Communications Name SpecificationsCompoBus/S I/O Link Connections Peripheral Device ConnectionsName Model number Sysmac Support Software SYSMAC-CPT SupportPrevious specifications New specifications Relevant pages Revised SpecificationsUnit Specifications and Components General Specifications SpecificationsCPM1A-10CDR-j CPM1A-20CDR-j CPM1A-30CDR-j CPM1A-40CDR-j Characteristics Memory Backup CPU Unit Input Specifications 3 I/O SpecificationsIncrement Mode 5 kHz Max SpecificationExpansion I/O Unit Input Specifications Relay Output CPU Unit and Expansion I/O Unit Output SpecificationsTransistor Output Source Type Transistor Output Sink Type20EDT 8ET 10CDT1-D 20CDT1-D 30CDT1-D 40CDT1-D 20EDT1 8ET1RS-232C Adapter Specifications Communications Adapter SpecificationsRS-422 Adapter Specifications CPU Unit Components Unit ComponentsCPM1A-10CDR-j/10CDT-D/10CDT1-D 10 I/O Terminals CPM1A-40CDR-j/40CDT-D/40CDT1-D 40 I/O TerminalsFatal error Input indicators Indicator Status MeaningCPU Unit Component Descriptions Expansion I/O Unit with 20 I/O Terminals Expansion I/O Unit ComponentsExpansion I/O Unit with 8 Input Terminals Expansion I/O Unit with 8 Output TerminalsAnalog I/O Unit Components Temperature Sensor Unit ComponentsCPM1A-TS101/102 CPM1A-TS001/002Set value Thermocouple Range C Range F Set value Platinum resistance Range C Range FCompoBus/S I/O Link Unit Components Pins FunctionRS-232C Adapter Communications Adapter ComponentsRS-422 Adapter Installation and Wiring Power Supply Wiring Design PrecautionsPower Supply Voltage 4 CPM1A Power InterruptionsInstallation Site Conditions Selecting an Installation SiteMomentary Power Failure Detection Automatic RestartOverheating Panel/Cabinet Installation2 CPM1A Installation Installing the CPM1A1 CPM1A Orientation CorrectDIN Track Installation Installation Connecting an Expansion I/O UnitRemoval Section General Precautions for Wiring Wiring and ConnectionsLine Noise Hanging DuctsFloor Ducts Ground WiringConduits GroundingTo 240-VAC Power Supply Crimp ConnectorsVDC Power Supply Input Configuration Input WiringCPM1A-8ED Outputs Input Wiring ExampleInput Devices Device Circuit diagramInductive Loads Relay Output Wiring Output WiringOutput Configurations CPM1A-8ER Transistor Output Wiring Sink Type CPM1A-8ET CPM1A-40CDT1-D Transistor Output Wiring Source TypeOutput Short Protection Polarity of Power Supply for the LoadFuse Insertion Inrush Current ConsiderationsHost Link Connections Peripheral Device ConnectionOne-to-one Host Link Connection One-to-N Host Link Connection RDB SDB RDA SDA One-to-one PC Link Connections One-to-one NT Link Connections C200HX/HG/HE PC Using Peripheral Devices 2 CPM1A Restrictions and Precautions SSS System SetupSupport Software Capabilities Online Editing Offline OperationsCopy Group Name Description Go ToFill PrintPC Setup File Time ChartGroup Name Description Utility Data Area Lists ChangeOnline Operations Offline and Online Operations Compatible Programming Consoles Using a Programming ConsoleCQM1-PRO01-E C200H-PRO27-EBuzzer Volume Mode SwitchDifferent Keys Contrast ControlProgram Mode Changing the CPM1A’s Mode with the Mode SwitchMonitor Mode RUN ModePanel Installation Connecting the Programming ConsolePreparation for Operation Entering the PasswordProgram Password Program BZ Overview Programming Console OperationsAll Clear Clearing MemoryPartial Clear Buzzer Operation Reading/Clearing Error MessagesKey Sequence OFF Entering or Editing Programs Writing a Word Address Writing Hexadecimal, BCD Constant#FFF6 Writing an Unsigned Decimal NumberWriting a Word Address DM Bit Operand Search Instruction SearchInsertion Inserting and Deleting Instructions00207INSERT END Not DeletionDelete END Checking the Program00178CIRCUIT ERR Corrected ProgramBit Monitor 11 Bit, Digit, Word MonitorCont Word MonitorChannel LR Multiple Address MonitoringCLR Channel LR Binary Monitor Differentiation Monitor@OFF OFF OFF CLR OFF OFF OFFThree-word Monitor Unsigned Decimal Monitor Signed Decimal MonitorThree-word Data Modification Changing Timer, Counter SV3CH CHG? Inputting a New SV Constant Hexadecimal, BCD Data ModificationIncrementing and Decrementing a Constant Pres VAL? Binary Data ModificationMontr D0000 Montr Signed Decimal Data ModificationUnsigned Decimal Data Modification Force Set, ResetHex-ASCII Display Change Clear Force Set/ResetOn on 00000FORCE RELE?Programming Example Program PasswordDisplaying the Cycle Time Preparatory Operations00000MEMORY CLR? HR CNT DM Montr END HR CNT DM Example Program Programming ProceduresInputting the One-second Timer Programming ProceduresInputting the Self-holding Bit Write NOPInputting the 10-count Counter Inputting the Two-second TimerInputting the Flicker Output LD notInputting the END001 Instruction Monitor BZ Test Run in Monitor ModeTest Runs and Error Processing 2 CPM1A Test Run Procedure Initial System Checks and Test Run ProcedureInitial System Checks Points to checkFlash Memory Precautions CPM1A Cycle ErrorFatal Errors Non-fatal ErrorsSelf-diagnosis Functions Message FAL No Meaning and appropriate responseUser-defined Errors Identifying ErrorsError Messages Error FlagsProgramming Errors Programming Console Operation ErrorsFALS07 Message MSG46Circuit ERR Type Message Meaning and appropriate responseMain Check Troubleshooting FlowchartsPower Supply Check Follow the Memory Error Fatal Error CheckNon-fatal Error Check 121 122 Environmental Conditions Check Memory Error Check Power supply Allowable voltage fluctuation range Maintenance InspectionsInspection Items Inspection items Details Criteria RemarksNecessary Tools for Inspection Handling PrecautionsStandard Tools Measurement DevicesExpansion Memory Unit Overview PrecautionsMemory Areas ButtonSpecifications Specifications and NomenclatureNomenclature Handling LED IndicatorMounting/Removing Eeprom Mounting EepromPC Connections Peripheral Port Communications SettingsCPM1, CPM1A, CPM2A CQM1, and SRM1 PCsUploading Programs DisconnectingDownloading Programs Operation Procedure134 135 Expansion Units Standard ModelsCPU Units Expansion I/O UnitsDescription Specifications Model number Temperature Sensor UnitsCompoBus/S I/O Link Unit Communications AdaptersPeripheral Devices Name Appearance Model Number SpecificationsCPM1A-10CDR-j/10CDT-D/10CDT1-D CPU Unit DimensionsCPM1A-20CDR-j/20CDT-D/20CDT1-D CPU Unit CPM1A-30CDR-j/30CDT-D/30CDT1-D CPU UnitCPM1A-20EDjExpansion I/O Unit CPM1A-40CDR-j/40CDT-D/40CDT1-D CPU UnitCPM1A-8jjjExpansion I/O Unit CPM1A-MAD01 Analog I/O Unit CPM1A-TSjjjTemperature Sensor UnitCPM1A-SRT21 CompoBus/S I/O Link Unit CPM1-CIF11 RS-422 Adapter CPM1-CIF01 RS-232C AdapterAppendix B Dimensions with Peripheral Devices AttachedAscii ACPAUTOEXEC.BAT BCDBit number Bit designatorBit-control instruction BlockCTS CONFIG.SYSDIP switch DefaultData link Data link areaEprom EepromFCS Initialization error DelayInput signal InstallLED JISLSS OFF NotPCB RAM PromRAS SCP ROMSSS System configuration Syntax errorSystem error System error messageWDT Numbers Index 165 166 167 Revision History Revision code Date Revised content

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