Wiring to the input terminals DC input AC input | Hitachi NJI-350B

Chapter 10 PLC Installation, Mounting, Wiring

(5) Wiring to the input terminals

DC input

AC input

Current output type

Proximity switch

24 V DC

①

24+

③

④

⑥

C1

1]

3]

4]

6]

C1

0 V

0

②

C0

⑤

⑦

0]

2]

C0

5]

7]

Example of 14-point type

Example of 14-point type

Figure 10.5 Input wiring

(a)DC input

1] When all input terminals (X0, X1, ...) and the common terminal (C) are loaded with 24 VDC, the input becomes ON status, and approximately 7.5 mA of current flows to the external input contacts.

2] For sensors such as a proximity switch or photoelectric switch, current output type (transistor open collector) can be connected directly. For voltage-output-type sensors, connect them to the input terminal after first going through the transistor.

3] Take measures to prevent faulty contact in a strong electric contact.

Strong electric contact

1]

Approx. 50 mA

3 W

24 V DC 560 Ω

C

The current that flows to a contact when external contacts are closed is approximately 7.5 mA. If a strong electric contact must be used, add resistance as shown in the diagram at left and supply sufficient current to the contact to prevent a faulty contact.

DC input module

4] Limit the wiring length within 30 m.

5] Multiple number of common terminals located at each input section are not connected internally. Make the connections externally as needed.

6] There are no RUN and STOP switches for the 10-point type. Connect with the RUN input terminal according to the above connection procedure so that RUN and STOP can be performed. Operation cannot be performed unless this connection is done.

(b)AC input

In case of AC input module, input voltage may exist if input wiring is long although no device drives. This phenomenon is caused from leakage current due to floating capacitance between lines.

External device

AC input

module

The countermeasures are [1] or [2] as follows. This voltage due to electrostatic coupling must be half of max. OFF voltage or less.

[1]To install dummy resistor in parallel so that impedance of input module is lower.

[2]To replace power supply at drive (external device) side.

Dummy resistor

External device

AC input

module

10-5

Image 250

Hitachi NJI-350B manual Wiring to the input terminals DC input AC input, 10-5

Contents

Application Manual Page Limited Warranty and Imitation of Liability Page Safety Precautions Required Prohibited Page Table of Contents High-Speed Counter Two-Phase Counter Input/Output SettingHigh-Speed Counter Single-Phase Memory Size and Memory Assignment Operation Error Codes Connecting to the PortsSyntax and Assembler Error Codes Error Display and Actions Memo Maintaining programs without a battery Remote maintenance through modem connectionEasily adjustable potentiometer Compliant with overseas specifications as standard Memo System Overview 23,28-point type system configuration diagram Device name Description Chapter Function and Performance Specifications General Specifications Device that has been connected Function SpecificationsTimer counter is provided internally WR, DR Off to stop operation Is running, operation stops and the outputs are aborted OFF General purpose port R7EC Interrupt input Performance Specifications Calculation Specifications Specification Input SpecificationsCircuit diagram OFF → on Output Specifications Y100 of EH-*23DRP/A23DRT/*28DRP/*28DRT Output specification Ms max 24 V DC 0.2A Number of output points See Chapter Number of common Load current Common OutputMs max 24 V DC 0.2A Response time Maximum Circuit Load current Common Output Maximum Circuit A 240 V AC Load current Common Externally supplied powerMs max At 1 cycle or less/common Analogue Input Specifications High-Speed Counter SpecificationsPWM Output/Pulse Train Output Specifications Point and 28-point type 10/14/28-point Relay Output Circuit diagram Analog expansion unit Analogue Output SpecificationsCircuit diagram 23 points type Module type Points type module Analog exp. unit Backup Potentiometer Analogue Input SpecificationsInterrupt Input Specifications Expansion Clock Function Power Supply for Sensor Product lineup Others Model Name and function of each part Type 10-Point Basic UnitDetailed explanation Remarks 14-Point Basic Unit EH-*14 EH-*23 EH-*28 23-Point and 28-Point Basic UnitTo the right Expansion Unit Name and function of each part Power supply 24V DC Load power supply 24V DC 100-240V AC Terminal Layout and WiringRUN AC power supply AC power supply 100-240V AC Load power supply 24V DCDC power supply 24V DC Input Power supply 24V DC 12/24V DC Power supply 24V DC Output Load power supply 12/24V DC Power supply 24V DC Output Load power supply 12/24V DC WRF06E Output Power supply 24V DC Output Power supply 100-240V ACPower supply 24V DC Output 100-240V AC Input Output Output Power supply24V DC 12/24V DC Input Output Power supply 100-240V AC Load power supply 24V DC, 100-240V AC Output IO6 OC7 VO7 EH-D6EAN Example of current input and current outputCurrent input ⋅ OC6 VO6 IO7 Type Weight Weights and Power Consumption100V AC 264V AC 24V DC Normal Rush Exterior Dimensions 140 150 Memo List of Instructions Instruction ClassificationsInstruction classification table Description Type TD, SS, CU CTU, CTD, CL TD, SS, CU, CTNand RES Basic instructions timer, counter WX, WY, WR Basic instructions relational boxDX, DY, DR Item number Ladder symbol Instruction symbol DR, DM BCDWR, WM Number Instruction symbol Process descriptions Instruction symbol Process descriptions Name WY, WR, WM BCD → Processing time when n=1WM, TC FUN instructions PWM BOX Instruction Specification Details Remark Item numberLadder format Condition code Bit Word Double word Constant Usable I/O Contact serial connection AND, ANI Basic instructions-3ANI Condition Basic instructions-5Contact parallel connection OR, ORI ORI Instruction format Basic instructions-7Negation not Not DIF n Basic instructions-8Leading edge detection and DIF, or DIF Number To 511 Decimal Trailing edge detection and DFN, or DFN Basic instructions-9DFN n Bit Word Double word Usable I/O Other Word Double word Constant Other Usable I/O BitWX WY WM DX DY TD, SS Remark Set start/reset cancel master control MCS, MCRBasic instructions-13 Upper case MCS MRD Ladder formatMPS MPP Logical block serial connection ANB Basic instructions-18See Function column Basic instructions-19 Logical block parallel connection ORB Bit Word Basic instructions-20Processing box start and end Processing BOX Indicates the start and end of the processing box Relational box start and end Relational BOX Basic instructions-21Function Indicates the start and end of the relational box Basic instructions-22 On delay timer on Delay TimerOUT TD n t s Time chart OUT SS n t s Basic instructions-23Single shot Single Shot TMR, CU Conditions are ignored because it uses edge trigger SS11 turns off when set value ≥ progress valueProgress value is updated SS11 is turned on at the leading edge of X00001 again, OUT CU n s Basic instructions-24Counter Counter Counter number To 255 Decimal Set value To 65535 Decimal Ignored X00005 CL15 CU15 Set value Progress Value CU15 TC15 UP/DOWN Counter CTU17 OUT CL n s Basic instructions-27Counter clear Counter Clear Counter number To 255 Decimal Word Double word Condition Steps Command formatDouble word LD, and s1S==s2 Or s1S==s2 Relational box Relational BOX When WR0000 ≠ WR0002, R003 turns onBasic instructions-30 26.8 Lower case DW BOX Double word LD, and s1Ss2 Or s1Ss2 Word See Notes 37.5 Double word When WR0000 WR0002, R005 turns onBasic instructions-32 S1 s2 Steps SignedRelational box Signed Relational BOX When DR0000 DR0002, R006 turns on signedBasic instructions-33 Off ≤ Relational box ≤ Relational BOX When WR0000 ≤ WR0002, R007 turns onBasic instructions-34 S1 = s2 Double word LD, and s1S=s2 Or s1S=s2 = s Arithmetic instructions-1Substitution statement Assignment Statement See following table Substituted into WR0000 at the leading edge of input X00001Designated by WR0000 + WM000 Word Double word Arithmetic instructions-2Binary addition Binary Addition Substitution destination Augend Addend 115 Lower case DW Arithmetic instructions-3Word 177 Double word Substitution destination Minuend Subtrahend Arithmetic instructions-4Binary subtraction Binary Subtraction Positive Negative 104 Lower case DW Arithmetic instructions-5BCD subtraction BCD Subtraction Word 163 Double word Word 112 Double word Arithmetic instructions-6Binary multiplication Binary Multiplication Substitution destination Multiplicand Multiplier 164 Lower case DW Arithmetic instructions-7BCD multiplication BCD Multiplication Word 447 Double word 143 Signed binary multiplication Signed BinaryMultiplication = s1 / s2 Arithmetic instructions-9Binary division Binary Division = s1 / s2 Word 110 Double word = s1 B/ s2 Arithmetic instructions-10BCD division 152 Lower case DW = s1 S/ s2 Arithmetic instructions-11Signed binary division 101 = s1 or s2 Arithmetic instructions-12Logical or Upper case B = s1 and s2 Arithmetic instructions-13Logical = s1 and s2 Bit, word Double word = s1 XOR s2 Arithmetic instructions-14Exclusive or = s1 XOR s2 Bit, word Double word = s1 == s2 Arithmetic instructions-15= Relational expression = s1 == s2 Is a word Is a double word 108 Signed = Relational expression= s1 S== s2 = s1 S== s2 Is a double word = s1 s2 Arithmetic instructions-17= s1 s2 Is a word Is a double Word Bit Double word = s1 S s2 Signed Relational expression= s1 S s2 Is a double word Arithmetic instructions-19 = s1 s2 Is a word Is a double word Arithmetic instructions-20 = s1 = s2 Arithmetic instructions-21≤ Relational expression = s1 = s2 Is a word Is a double word = s1 S= s2 Signed ≤ Relational expression= s1 S= s2 Is a double word Bset d, n Application instructions-1Bit set Bit location to be set Constant is set Decimal Application instructions-2 Bit resetBres d, n Bit test Application instructions-3BTS d, n Also, the 20th bit of DR0102 is reset to 0 by Bres Also, the 20th bit of DR0104 is checked by BTS SHR d, n Application instructions-4Shift right After execution DIF1 Shift left Application instructions-5SHL d, n Rotate right Application instructions-6ROR d, n Rotate left Application instructions-7ROL d, n B31 DR0002 Logical shift right Application instructions-8LSR d, n LSL d, n Application instructions-9Logical shift left If d is a word BCD shift right Application instructions-10BSR d, n BCD shift left Application instructions-11BSL d, n Below Application instructions-12Block transfer Move If n is a word Words of data are transferred Copy d, s, n Application instructions-13Copy Below Copy d, s, n Default value H2020 is set in the range of WR0100 to WR01FE R7F4 R7F3 R7F2 R7F1 Application instructions-14Block exchange Exchange XCG d1, d2, n Application instructions-15 Reverses the contents of dTo be reversed NEG d Application instructions-16Twos complement Negate To take complement ABS d, s Application instructions-17Absolute value ABS d, s Word Double word Before conversion Application instructions-18Binary → BCD conversion BIN After conversion BIN Before conversion Application instructions-19BCD → Binary conversion BCD Average Application instructions-20Decode 105 115 195 317 481 829 1586 Encode Application instructions-21128 187 126 Bit count Application instructions-22Number of bits set to That counts the bits Set to Swap d Application instructions-23Swap Swaps the upper 8 bits and lower 8 bits contained in d Unit When n=0, it is not executed When n5, it is not executedApplication instructions-24 Unity result write Destination I/O Input Point type Output Application instructions-25 When n=0, it is not executedDistribute X01001 DIF0 Dist WR0000, WX0000 LD X00001 and DIF0 714 Control instructions-1Normal scan end Instruction for use 101 Special internal output Error code Error description 102 CU, CT Control instructions-4Conditional jump Code number To 255 Decimal Jump condition Nesting of JMP instructions is allowed Syntax of JMP, Cjmp104 LBL n Control instructions-5Label WRF001 H0001 Duplicate definition of LBL For the instruction instruction, see Next n Control instructions-6Code number To 49 Decimal 106 Next Control instructions-7107 Syntax of for to Next 108 109 SB n Control instructions-9Start subroutine program WRF001 H0004 Duplicate definition of SB H0013 SB undefined RTS RTS DER ERR111 To 2 , 16 to 19 Control instructions-11Start interrupt scan program Interrupt To 27 Decimal End interrupt scan program Return Interrupt Control instructions-12113 Nesting of subroutines is allowed up to 5 levels Syntax of SB n, RTS, INT n and RTI114 Usable I/O Others Baud rate Value +A Data length Byte +B H80 †† ††=Start code +C H0000 118 WR0 Sample programR7E3 DIF0 TRNS/RECV command return code table Name Description Countermeasure Recv 0 d, s, t Transfer command-2064 122 123 Argument General purpose port switchingFUN instructions-1 124 432 FUN instructions-2Refresh All points Argument dummy 244 FUN instructions-3Refresh Input/output Input type 127 128 147 FUN instructions-5High-speed Counter Operation Control Argument Counter Number, operation Control value 138 FUN instructions-6High-speed Counter Coincidence Output Control Argument Counter Number, output Instruction 131 FUN instructions-8 High-speed Counter Current Value ReplacementArgument counter Number Replacement value Storage area Rewrite the count value of the counter No to 132 FUN instructions-9High-speed counter current value reading Argument counter Number Current value storage Area 134 162 High-speed counter presetFUN instructions-11 135 136 137 173 FUN instructions-13138 139 149 FUN instructions-14Pulse output control Argument Pulse output Number 217 Pulse frequency output setting changesFUN instructions-15 141 142 919 FUN instructions-16Pulse output with acceleration/deceleration 143 144 145 146 Usable I/O classifications and point types I/O Assignment Type Assignment Point Shows a diagram outlining this series of operations External I/O Numbers List of I/O number conventions for external I/O List of external I/O classification and data typeClassification Data type Remarks Data type Numbering convention Example DR0 Internal Output NumbersWR0 WM0 Sram Lists the programming specifications for the MICRO-EHMemory Size and Memory Assignment Flash Programming Devices Following methods are used to create the user programs Ladder Editor System configuration using a personal computerProgramming Methods WVCB02H WPCB02H Modify Test operation, adjustment Out-line of opera-ting procedure Situation PointList of procedures for creating a program On-line On-direct Size of one circuit Example when using loop symbols Example when using a processing box Program Transfer WRF03D WRF01AWRF03C WRF06B Change individual setting Store the settings in the memory Initial Setting for Special Input/Output FunctionInput/Output Function Operation Mode Operation mode list Input/Output Setting Special internal output for setting detailed function „ Outline Y100 Group „ Mode setting Y101 Y102 Group 2 Group„ In/output setting „ Example R7FC toR7FF Pulse / PWM Output adjustmentSpecial Output Operation in CPU Stop Status Counter output Operation of Single-Phase Counter High-Speed Counter Single-PhaseBasic operation Preload input operation Current value clear instruction operation Setting of Single-Phase Counter WRF058 Counter At abnormal settingIndividual counter setting WRF059 Counter Operation of Two-Phase Counters High-Speed Counter Two-Phase CounterPhase counting mode High ↓ Falling edge ↓ Falling edge Low ↑ Rising edge High High ↓ Falling edge Low ↓ Falling edge High↑ Rising edge Low ↑ Rising edge High WRF072 Setting of Two-Phase CounterDiagnostic error WRF076 WRF058 Two-phase counter Bit Description PWM Output Operation of PWM Output Setting the PWM output frequency Setting the PWM OutputSetting the PWM output on-duty value WRF058 PWM output Setting abnormalityIndividual PWM output setting WRF059 PWM output WRF05A PWM output Pulse Train Output Operation of Pulse Output Setting the number of output pulses Setting of Pulse OutputSetting the pulse output frequency Number of output pulses for pulse output WRF058 Pulse output Individual setting of pulse outputsWRF059 Pulse output Interrupt input correspondence table Terminal INT No Interrupt InputDigital Filter Input sampling number Potentiometers Analogue Input Analogue Output Sw1 Sw2 Range Remarks Sw6 Conversion mode RemarksAnalogue Expansion unit Sw3 Sw4 Range Remarks RUN mode when the RUN input is On Switch Stop orSpecification. a 10-point type CPU becomes Input on RUN Start Program classification Description Expression Normal Scan Definition and operation Scan time Congestion check time Causes of congestion errors at normal scanRTI RTI INT0INT0 10 Congestion error at periodical scan 10 ms Periodical Scan Interrupt Scan Continuation of operation after a congestion errorStop Scan Program execution Interrupt contact on Interrupt contact on Congestion check time INT16 INT17 INT18 INT27 Relationship of Each Scan TypeList of interrupt label Interrupt label Cause of startup Conditions for performing program change while running Online Change in RUNCPU Halt time Instantaneous power failure actions Instantaneous Power FailurePowering on RUN OFF Function Description When to use the function Operation Parameter Test Operation Forced Set/ResetForced Output Installing the unit InstallationInstallation location and environment Mounting to a DIN rail 10-2 Separation of the power system Wiring10-3 Unit Screw Clamping Wiring to the power module10-4 Wiring to the input terminals DC input AC input 10-5 EH-*XXDT Wiring to the output terminals Relay outputTransistor output Transistor output Source type Life characteristics 125 V AC 10-7 Wiring to the unit terminals 10-8 Port Communication port specificationPort function Ascii Remarks Off H8000 Transmission procedure 4800 bps11-2 Bit WRF03D Initial value Port 2 specificationsSetting port 11-3 Port 2 hardware General purpose port Port 1,21n station communication on RS-485 11-4 AT Commands ConfigurationModem Control Function Register Set value Function List of commands extractCommand Function overview Example Number format Word format Sequence 11-7 Connecting to the Ports Port Case of RS-422 Connection for 1n station communication by RS-485 11-9 11-10 Error Codes R7CF Error Error name ClassifiCode Detection timing Cation Failure detection For Syntax and Assembler Error CodesLBL INT JMP Operation Error CodesCAL Cjmp R7CB Name Meaning Description Setting Resetting ConditionBit Special Internal Output Area R7CE 12-6 12-7 WRF07B List of special internal outputs that can be storedSpecial internal output Function That can be stored WRF07C WRF07D WRF07E Name Storage data Setting Resetting Condition12.5 12-9 Name Storage data Description Setting 12-10 Name Stored data Description PI/O function Individual setting Request12-11 Name Stored data Description Setting Resetting 12-12 13-1 Error Display and ActionsLadder Editor 13-2 Error code Error name Corrective action Process flow when an error occurred is shown below13-3 13-4 Checklist when Abnormality Occurred 13-5 CPU LED, I/O LED Procedures to Solve Abnormality13-6 Power supply check 13-7 13-8 13-9 13-10 Data cannot be entered Assignment error is generated, but data is read13-11 13-12 13-13 Assignment error occurred, but output is normal CPU operates, but output signals are not detected13-14 13-15 13-16 Detailed operation example Operation verification proceduresPeripheral unit name Form 14-1 E P 1 Starting the Ladder Editor for Windows 14-2 Menu bar Select H-302 for the CPU type settingE P 2 Initialization 14-3 Assign in the Menu bar 14-4 Setting from the I/O Assign List 14-5 Setting from the Slot Setting Status 14-6 Click the OK button. The dialogue closes E P 3 Program Input14-7 Click the OK button in the Processing Box 14-8 M, Y, TD, SS, WDT, MS, TMR, CU, RCU, CTU, CTD, CL Input I/O No., time base, and the first setting value14-9 Click the circuit write icon Tool bar Input comparison expression and comment Click the OK button14-10 E P 4 Checking Program Errors 14-11 E P 5 Saving the Program 14-12 E P 6 Program Transfer to CPU 14-13 Click File → CPU write in the Menu bar 14-14 I/O Monitor dialogue box is displayed E P 7 Monitoring Verifying the Operation14-15 Monitor and display 16 points from Y100 Click the icon in the Symbol barI/O monitor can be specified in the following two ways 14-16 Daily inspection Normal status Main cause of errorLife of the power module Items for daily inspection How to replace the battery Life of the battery15-2 ORI LDIANI Not EH-150 200 250 252 2000 2002 4010 700 1002 300 702 302 Arithmetic instructions Instruction Instruction name Application instructions 2/2 Instruction Instruction name Free FUN instructions 1/5 Instruction Instruction name FUN instructions 2/5 Instruction Instruction name FUN instructions 3/5 Instruction Instruction name FUN instructions 4/5 Instruction Instruction name FUN instructions 5/5 Instruction Instruction name Appendix 2 Standards Standards