Mitsubishi Electric MELSEC-L Series User Manual
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Mitsubishi Electric MELSEC-L Series User Manual

Mitsubishi Electric MELSEC-L Series User Manual

Programmable controller
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MELSEC-L I/O Module
User's Manual
-LX10
-LX28
-LX40C6
-LX41C4
-LX42C4
-LY10R2
-LY18R2A
-LY20S6
-LY40NT5P
-LY28S1A
-LY41NT1P
-LY42NT1P
-LY40PT5P
-LY41PT1P
-LY42PT1P
-LH42C4NT1P
-LH42C4PT1P

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Summary of Contents for Mitsubishi Electric MELSEC-L Series

  • Page 1 MELSEC-L I/O Module User's Manual -LX10 -LX28 -LX40C6 -LX41C4 -LX42C4 -LY10R2 -LY18R2A -LY20S6 -LY40NT5P -LY28S1A -LY41NT1P -LY42NT1P -LY40PT5P -LY41PT1P -LY42PT1P -LH42C4NT1P -LH42C4PT1P...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS (Read these precautions before using this product.) Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. The precautions given in this manual are concerned with this product only. For the safety precautions of the programmable controller system, refer to the user's manual for the CPU module used.
  • Page 4 [Design Precautions] WARNING ● Configure safety circuits external to the programmable controller to ensure that the entire system operates safely even when a fault occurs in the external power supply or the programmable controller. Failure to do so may result in an accident due to an incorrect output or malfunction. (1) Emergency stop circuits, protection circuits, and protective interlock circuits for conflicting operations (such as forward/reverse rotations or upper/lower limit positioning) must be configured external to the programmable controller.
  • Page 5 [Design Precautions] CAUTION ● Do not install the control lines or communication cables together with the main circuit lines or power cables. Keep a distance of 100mm or more between them. Failure to do so may result in malfunction due to noise. ●...
  • Page 6 Do not remove the film during wiring. Remove it for heat dissipation before system operation. ● Mitsubishi Electric programmable controllers must be installed in control panels. Connect the main power supply to the power supply module in the control panel through a relay terminal block.
  • Page 7 [Startup and Maintenance Precautions] WARNING ● Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction. ● Correctly connect the battery connector. Do not charge, disassemble, heat, short-circuit, solder, or throw the battery into the fire. Also, do not expose it to liquid or strong shock. Doing so will cause the battery to produce heat, explode, ignite, or leak, resulting in injury and fire.

  • Page 8: Conditions Of Use For The Product

    Notwithstanding the above restrictions, Mitsubishi Electric may in its sole discretion, authorize use of the PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi Electric and provided further that no special quality assurance or fail-safe, redundant or other safety features which exceed the general specifications of the PRODUCTs are required.

  • Page 9: Introduction

    This manual describes safety precautions, specifications, and functions. Before using this product, please read this manual and the relevant manuals carefully and develop familiarity with the functions and performance of the MELSEC-L series programmable controller to handle the product correctly. Remark Operating procedures are explained using GX Works2.

  • Page 10: Compliance With Emc And Low Voltage Directives

    COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES (1) Method of ensuring compliance To ensure that Mitsubishi Electric programmable controllers maintain EMC and Low Voltage Directives when incorporated into other machinery or equipment, certain measures may be necessary. Please refer to one of the following manuals.

  • Page 11: Relevant Manuals

    RELEVANT MANUALS (1) CPU module user's manual Manual name Description manual number (model code) Specifications of the CPU modules, power supply modules, display unit, MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and branch module, extension module, SD memory cards, and batteries, Inspection) information on how to establish a system, maintenance and inspection, and SH-080890ENG, 13JZ36...

  • Page 12: Table Of Contents

    CONTENTS CONTENTS SAFETY PRECAUTIONS ............. 1 CONDITIONS OF USE FOR THE PRODUCT .
  • Page 13 CHAPTER 6 INSTALLATION AND WIRING Installation Environment and Installation Position ........62 Wiring .

  • Page 14: Manual Page Organization

    MANUAL PAGE ORGANIZATION In this manual, pages are organized and the symbols are used as shown below. The following illustration is for explanation purpose only, and should not be referred to as an actual documentation. "" is used for screen names and items. The chapter of the current page is shown.
  • Page 15 Pages describing specifications are organized as shown below. The following illustration is for explanation purpose only, and should not be referred to as an actual documentation. Model name and module name Module specifications Appearance Derating chart (only for input modules) Terminal connections External connections...

  • Page 16: Terms

    Description CPU module Abbreviation for the MELSEC-L series CPU module Power supply module Abbreviation for the MELSEC-L series power supply module Display unit A liquid crystal display to be attached to the CPU module LCPU Another term for the MELSEC-L series CPU module...

  • Page 17: Chapter 1 Product Lineup

    CHAPTER 1 PRODUCT LINEUP CHAPTER 1 PRODUCT LINEUP Product Lineup (1) Input module Number of occupied Current Module name Input specifications Weight Model name Reference I/O points consumption Terminal block Page 30, 16 points 90mA 0.17kg LX10 100 to 120VAC, 16 points Section 4.2.1 AC Input module Terminal block...

  • Page 18: How To Read The Model Name

    How to Read the Model Name • For input module or output module L Y 4 0 N T 5 P • For I/O combined module L H 4 2 C 4 N T 1 P Input type Output type Item Symbol Specifications...
  • Page 19 CHAPTER 1 PRODUCT LINEUP Specifications Item Symbol Input module Output module AC input DC input Contact output Triac output Transistor output 0.1A Current specifications 0.5A 0.6A Item Symbol Specifications With protection function Extended specification Independent common...

  • Page 20: Chapter 2 Part Names

    CHAPTER 2 PART NAMES 18-point screw terminal block type 40-pin connector type Name Description Module joint levers Levers for connecting two modules Indicate the I/O status. I/O operation status indicator LEDs • On (green): I/O signal is on. • Off: I/O signal is off. Terminal block A 18-point terminal block for connecting I/O signal cables to external devices A cover for preventing electric shock...
  • Page 21 CHAPTER 2 PART NAMES Memo...

  • Page 22: Chapter 3 Before Using I/O Module

    CHAPTER 3 BEFORE USING I/O MODULE Input Module (1) Common precautions for all input modules (a) Simultaneous on points The number of simultaneous on points of input module depends on the input voltage and ambient temperature. Refer to the derating chart of the input module specifications. (Page 29, CHAPTER 4) (2) Precautions for using the DC input module (a) Measures against back EMF When an inductive load is connected, connect a diode in parallel with the load.

  • Page 23: Output Module

    CHAPTER 3 BEFORE USING I/O MODULE Output Module (1) Common precautions for all output modules (a) Maximum switching frequency when the module drives an inductive load. The output must be on for one second or longer and off for one second or longer. (b) Load for connection When connecting a counter or timer that has a DC-DC converter as a load, select an output module whose maximum load current is larger than inrush current of the load.
  • Page 24 (2) Precaution for using the transistor output module (a) Action against reverse current If a transistor output module is wired as shown below, reverse current flows in an output element, causing a failure of the element. When wiring a transistor output module, connect a diode as shown below. •...
  • Page 25 CHAPTER 3 BEFORE USING I/O MODULE (3) Precautions for using the contact output module When using the contact output module, consider the following. • Relay life (contact switching life) • Effects to relay life due to connected load • Measures against back EMF (a) Relay life (contact switching life) Applicable module ...
  • Page 26 (b) Effects to relay life due to connected load The actual relay life may be significantly shortened compared to the relay life curve, depending on the type of a load connected and the characteristics of inrush current. (Page 23, Section 3.2 (3) (a)) Also, the inrush current may cause the module contact welding.
  • Page 27 CHAPTER 3 BEFORE USING I/O MODULE (c) Measures against back EMF Configure a contact protection circuit for extending the contact life, preventing noise when the contact is cut off, and suppressing the generation of carbide and nitric acid due to arc discharge. An Incorrect contact protection circuit may cause contact welding.
  • Page 28 (4) Precautions for using the triac output module Because of characteristics of a triac, a sudden change of voltage or current may cause unstable operations of a triac used for the triac output module. Whether the voltage or current change causes a problem differs depending on an individual part (each triac), thus check the following when using the triac output module.
  • Page 29 CHAPTER 3 BEFORE USING I/O MODULE (c) Measures for connecting an inductive load To connect an inductive load, take measures to reduce noise to the side where the load is connected as shown below. Example Method for selecting elements Remarks Output module Select a cut voltage (Vc) for the varistor to meet the following condition.

  • Page 30: I/O Combined Module

    I/O Combined Module This section describes the precautions for using the I/O combined module. The precautions not described below are common to that for the input module and output module. (Page 20, Section 3.1, Page 21, Section 3.2) (1) I/O numbers of the I/O combined module The I/O combined module uses same I/O number for input and output.

  • Page 31: Chapter 4 Specifications

    CHAPTER 4 SPECIFICATIONS CHAPTER 4 SPECIFICATIONS General Specifications For the general specifications of the I/O modules, refer to the following manual. Manual "Safety Guidelines" included in the CPU module or head module...

  • Page 32: Input Module Specifications

    Input Module Specifications 4.2.1 LX10 AC input module Item Specifications Appearance Number of input points 16 points Rated input voltage, frequency 100 to 120VAC (+10%/-15%), 50/60Hz(±3Hz) Input voltage distortion Within 5% Rated input current 8.2mA (100VAC, 60Hz), 6.8mA (100VAC, 50Hz) Inrush current Max.
  • Page 33 CHAPTER 4 SPECIFICATIONS External connections Terminal connections Terminal Signal Signal name number name Internal Photocoupler circuit TB16 Photocoupler TB17 100 to 120VAC Empty 100 to 120VAC Viewed from the front of the module.

  • Page 34: Lx28 Ac Input Module

    4.2.2 LX28 AC input module Item Specifications Appearance Number of input points 8 points Rated input voltage, frequency 100 to 240VAC (+10%/-15%), 50/60Hz(±3Hz) Input voltage distortion Within 5% 16.4mA (200VAC, 60Hz), 13.7mA (200VAC, 50Hz) Rated input current 8.2mA (100VAC, 60Hz), 6.8mA (100VAC, 50Hz) Inrush current Max.

  • Page 35: Lx40C6 Dc Input Module

    CHAPTER 4 SPECIFICATIONS 4.2.3 LX40C6 DC input module Item Specifications Appearance Number of input points 16 points 24VDC (ripple rate: 5% or less) Rated input voltage (Allowable voltage range: 20.4 to 28.8VDC) Rated input current 6.0mA TYP. (at 24VDC) ON voltage/ON current 15V or higher/4mA or higher OFF voltage/OFF current 8V or lower/2mA or lower...
  • Page 36 External connections Terminal connections Signal Terminal Signal name number name Photocoupler Internal circuit TB16 Photocoupler TB17 24VDC 24VDC Empty 24VDC 24VDC Viewed from the front of the module.

  • Page 37: Lx41C4 Dc Input Module

    CHAPTER 4 SPECIFICATIONS 4.2.4 LX41C4 DC input module Item Specifications Appearance Number of input points 32 points 24VDC (ripple rate: 5% or less) Rated input voltage (Allowable voltage range: 20.4 to 28.8VDC) Rated input current 4.0mA TYP. (at 24VDC) ON voltage/ON current 19V or higher/3mA or higher OFF voltage/OFF current 9V or lower/1.7mA or lower...
  • Page 38 External connections Terminal connections Signal Signal name name number Photocoupler Internal circuit Photocoupler B01,B02 24VDC 24VDC Empty Empty Empty Empty Empty Empty 24VDC 24VDC Viewed from the front of the module.

  • Page 39: Lx42C4 Dc Input Module

    CHAPTER 4 SPECIFICATIONS 4.2.5 LX42C4 DC input module Item Specifications Appearance Number of input points 64 points 24VDC (ripple rate: 5% or less) Rated input voltage (Allowable voltage range: 20.4 to 28.8VDC) Rated input current 4.0mA TYP. (at 24VDC) ON voltage/ON current 19V or higher/3mA or higher OFF voltage/OFF current 9V or lower/1.7mA or lower...
  • Page 40 External connections Terminal connections Left side connector Right side connectors Signal Signal Signal Signal name number name name number name 1B20 2B20 2A20 1B20 1A20 Photocoupler Internal 2B19 circuit 1B19 1A19 2A19 1B18 1A18 2B18 2A18 1B17 1A17 2B17 2A17 2B16 2A16 1B16...

  • Page 41: Output Module Specifications

    CHAPTER 4 SPECIFICATIONS Output Module Specifications The following output module equips the overload protection function and the overheat protection function. Applicable model  LY40NT5P, LY41NT1P, LY42NT1P, LY40PT5P, LY41PT1P, LY42PT1P Function Description • If the output module detects overcurrent, it limits output current by the current limiter operation •...

  • Page 42: Ly10R2 Contact Output Module

    4.3.1 LY10R2 contact output module Item Specifications Appearance Number of output points 16 points 24VDC 2A (resistance load)/point, 8A/common Rated switching voltage, current 240VAC 2A (COS = 1)/point, 8A/common Minimum switching load 5VDC 1mA Maximum switching load 264VAC 125VDC OFF to ON 10ms or less Response time ON to OFF...

  • Page 43: Ly18R2A Contact Output Module (All Points Independent)

    CHAPTER 4 SPECIFICATIONS 4.3.2 LY18R2A contact output module (All points independent) Item Specifications Appearance Number of output points 8 points Insulation method Relay 24VDC 2A (resistance load)/point, 8A/module Rated switching voltage, current 240VAC 2A (COS = 1)/point, 8A/module Minimum switching load 5VDC 1mA Maximum switching load 264VAC 125VDC...

  • Page 44: Ly20S6 Triac Output Module

    4.3.3 LY20S6 triac output module Item Specifications Appearance Number of output points 16 points Rated load voltage, 100 to 240VAC (+10%/-15%), 50/60Hz(±3Hz) frequency Maximum load current 0.6A/point, 4.8A/common Load voltage distortion ratio Within 5% Maximum load voltage 264VAC Minimum load 24VAC/100mA, 100VAC/25mA, 240VAC/25mA voltage/current Maximum inrush current...

  • Page 45: Ly28S1A Triac Output Module (All Points Independent)

    CHAPTER 4 SPECIFICATIONS 4.3.4 LY28S1A triac output module (All points independent) Item Specifications Appearance Number of output points 8 points Insulation method Photocoupler isolation Rated load voltage, 100 to 240VAC (+10%/-15%), 50/60Hz(±3Hz) frequency Maximum load current 1A/point, 8A/module Load voltage distortion ratio Within 5% Maximum load voltage 264VAC...
  • Page 46 External connections Terminal connections Signal Terminal Signal name number name Load Load External load power supply Load External load power supply Load External load power supply Load External load power supply Load External load power supply Load 100 to 240VAC External load power supply Load Internal...

  • Page 47: Ly40Nt5P Transistor Output Module (Sink Type)

    CHAPTER 4 SPECIFICATIONS 4.3.5 LY40NT5P transistor output module (Sink type) Item Specifications Appearance Number of output points 16 points Rated load voltage 10.2 to 28.8VDC Maximum load current 0.5A/point, 5A/common Maximum inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON...

  • Page 48: Ly41Nt1P Transistor Output Module (Sink Type)

    4.3.6 LY41NT1P transistor output module (Sink type) Item Specifications Appearance Number of output points 32 points Rated load voltage 10.2 to 28.8VDC Maximum load current 0.1A/point, 2A/common Maximum inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON 0.1VDC (TYP.) 0.1A, 0.2VDC (MAX.) 0.1A...
  • Page 49 CHAPTER 4 SPECIFICATIONS External connections Terminal connections Signal Signal name number name Load Load Load Load Load Load Load Load Load Load Load Load Load Load Load Photocoupler Load Load Internal Load Load circuit Load Load Load Load Load Load Load Load Load...

  • Page 50: Ly42Nt1P Transistor Output Module (Sink Type)

    4.3.7 LY42NT1P transistor output module (Sink type) Item Specifications Appearance Number of output points 64 points Rated load voltage 10.2 to 28.8VDC Maximum load current 0.1A/point, 2A/common Maximum inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON 0.1VDC (TYP.) 0.1A, 0.2VDC (MAX.) 0.1A...
  • Page 51 CHAPTER 4 SPECIFICATIONS External connections Terminal connections Left side connector Right side connectors Signal Signal Signal Signal name name name name number number Load Load Load Load 1B20 1A20 2B20 2A20 Load Load Load Load 1B19 1A19 2B19 2A19 Load 1B20 Load Load...

  • Page 52: Ly40Pt5P Transistor Output Module (Source Type)

    4.3.8 LY40PT5P transistor output module (Source type) Item Specifications Appearance Number of output points 16 points Rated load voltage 10.2 to 28.8VDC Maximum load current 0.5A/point, 5A/common Maximum inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON 0.2VDC (TYP.) 0.5A, 0.3VDC (MAX.) 0.5A...

  • Page 53: Ly41Pt1P Transistor Output Module (Source Type)

    CHAPTER 4 SPECIFICATIONS 4.3.9 LY41PT1P transistor output module (Source type) Item Specifications Appearance Number of output points 32 points Rated load voltage 10.2 to 28.8VDC Max. load current 0.1A/point, 2A/common Max. inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON...
  • Page 54 External connections Terminal connections Signal name Pin number Signal name Load Load Load Load Load Load Load Load Load Load Load Load Load TB20 Load Load Photocoupler Load Load Load Load Internal circuit Load Load Load Load Load Load Load Load Load Load...

  • Page 55: Ly42Pt1P Transistor Output Module (Source Type)

    CHAPTER 4 SPECIFICATIONS 4.3.10 LY42PT1P transistor output module (Source type) Item Specifications Appearance Number of output points 64 points Rated load voltage 10.2 to 28.8VDC Max. load current 0.1A/point, 2A/common Max. inrush current Current is limited by the overload protection function. Leakage current at OFF 0.1mA or less Maximum voltage drop at ON...

  • Page 56: I/O Combined Module Specifications

    I/O Combined Module Specifications The I/O combined module equips the overload protection function and the overheat protection function. Function Description • If the output side detects overcurrent, it limits output current by the current limiter operation • For the overcurrent detection value and the limited current, refer to "Overload protection function" on the Overload protection function module specifications.

  • Page 57: Lh42C4Nt1P Dc Input/Transistor Output Combined Module (Sink Type)

    CHAPTER 4 SPECIFICATIONS 4.4.1 LH42C4NT1P DC input/transistor output combined module (Sink type) Item Specifications Appearance  Input specifications Number of input points 32 points Rated input voltage 24VDC (ripple rate: 5% or less) (Allowable voltage range: 20.4 to 28.8VDC) Rated input current 4.0mA TYP.
  • Page 58 Derating chart 32 points, 25 32 points, 35 32 points, 45 18 points, 55 Simultaneous on input 14 points, 55 points (points) Input voltage 24V DC 12 points, 55 26.4V DC 28.8V DC Ambient temperature( External connections Terminal connections Left side connector Right side connectors Signal Signal...

  • Page 59: Lh42C4Pt1P Dc Input/Transistor Output Combined Module (Source Type)

    CHAPTER 4 SPECIFICATIONS 4.4.2 LH42C4PT1P DC input/transistor output combined module (Source type) Item Specifications Appearance  Input specifications Number of input points 32 points Rated input voltage 24VDC (ripple rate: 5% or less) (Allowable voltage range: 20.4 to 28.8VDC) Rated input current 4.0mA TYP.
  • Page 60 Derating chart 32 points, 50 32 points, 30 32 points, 40 20 points, 55 Simultaneous on input 18 points, 55 points (points) Input voltage 24V DC 16 points, 55 26.4V DC 28.8V DC Ambient temperature( External connections Terminal connections Left side connector Right side connectors Signal Signal...

  • Page 61: Chapter 5 System Configuration

    CHAPTER 5 SYSTEM CONFIGURATION CHAPTER 5 SYSTEM CONFIGURATION (1) System configuration using I/O module An example of overall system configuration using MELSEC-L series I/O modules is shown below. (a) Mounting to a CPU module Display unit (optional) Power supply module...
  • Page 62 (b) Mounting to a head module Power supply module CPU module I/O module END cover Dedicated cable with connector Dedicated cable with connector Connector (relay terminal module) (connector/terminal block converter module) (optional) (optional) Relay terminal module Connector/terminal block converter module (optional) (optional) (2) Optional products...
  • Page 63 CHAPTER 5 SYSTEM CONFIGURATION (3) Connection with the connector/terminal block converter module Dedicated cable with connector Connector/terminal block converter module (4) Connection with the relay terminal module Dedicated cable with connector Relay Relay terminal module terminal module...

  • Page 64: Chapter 6 Installation And Wiring

    CHAPTER 6 INSTALLATION AND WIRING Installation Environment and Installation Position For installation environment and installation position, refer to the following. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) MELSEC-L CC-Link IE Field Network Head Module User's Manual...

  • Page 65: Wiring

    CHAPTER 6 INSTALLATION AND WIRING Wiring 6.2.1 For the 18-point screw terminal block module (1) Precautions • Always use a solderless terminal of 0.8mm or less in thickness. Up to two solderless terminals can be connected to one terminal block. •...
  • Page 66 (3) Removal procedure for the terminal block Open the terminal cover and loosen the terminal block mounting screw. Terminal block mounting screw Press the terminal block fixing holes until the lower part of the terminal block is disengaged from the module, and then remove the terminal block.

  • Page 67: For The 40-Pin Connector Type Module

    CHAPTER 6 INSTALLATION AND WIRING 6.2.2 For the 40-pin connector type module (1) Precautions • Use copper wires having temperature rating of 75°C or more for the connectors. • Tighten the connector screws within the following specified torque range. Screw type Tightening torque range Connector screw (M2.6) 0.20 to 0.29Nm...
  • Page 68 (3) Wiring method for the 40-pin connector For the wiring method, refer to the following. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) (4) Installing procedure for the 40-pin connector. Plugging the connector Plug the wired connector into the slot on the I/O module. Connector screw Tightening the connector screws Tighten the two connector screws (M2.6).

  • Page 69: Input Wiring Examples

    CHAPTER 6 INSTALLATION AND WIRING Input Wiring Examples The following shows wiring examples of the DC input module to connectable DC input equipments (DC output type). (1) Wiring example with relay output type DC input module Contact output type (2) Wiring example with two wire DC type DC input module DC 2-wire type Power supply...
  • Page 70 Avoid wiring shown below when connecting with a voltage output type sensor. This wiring cause current to flow to the DC input module through a pull-up resistor in a sensor. Therefore, input current may not reach ON current of the module and the Input signal does not turn on. DC input module Voltage output type Power supply...

  • Page 71: Chapter 7 Various Settings

    CHAPTER 7 VARIOUS SETTINGS CHAPTER 7 VARIOUS SETTINGS The following settings for I/O module can be made with GX Works2. • I/O response time setting • Error time output mode setting Input Response Time Setting Perform the following procedure. (When using GX Developer Page 90, Appendix 4 (1)) Open "I/O Assignment "...
  • Page 72 The pulse width that the input module takes as input data differs depending on the input response time. The pulse width taken as input data differs depending on the input response time. Therefore, fully consider the operating environment when setting the input response time, Input response time Minimum value of pulse width possibly taken as input date 0.3ms...

  • Page 73: Error Time Output Mode Setting

    CHAPTER 7 VARIOUS SETTINGS Error Time Output Mode Setting Perform the following procedure. (When using GX Developer Page 90, Appendix 4 (2)) Open "I/O Assignment" of "PLC Parameter". Project window  [Parameter]  [PLC Parameter]  [I/O Assignment] Select "Output" or "I/O Mix" in "Type". Click the [Detailed Setting] button.

  • Page 74: Chapter 8 Troubleshooting

    CHAPTER 8 TROUBLESHOOTING Troubleshooting for Input Circuit (1) An input signal does not turn off. (a) Case 1 Case • The leakage current of an input switch occurred. (e.g. drive by a contactless switch) AC input Cause Leakage Input module current Power supply •...
  • Page 75 CHAPTER 8 TROUBLESHOOTING (c) Case 3 Case • A leakage current occurred due to the line capacity of a wiring cable. (The line capacity C of a twisted pair cable is approx. 100pF/m.) AC input Cause Leakage Input module current Power supply •...
  • Page 76 (e) Case 5 Case By using two power supplies, a sneak path has been configured. Cause Lamp Input module E1>E2 • Use one power supply. • To prevent the sneak path, connect a diode as shown below. DC input Diode Action Input Lamp...

  • Page 77: Troubleshooting For Output Circuit

    CHAPTER 8 TROUBLESHOOTING Troubleshooting for Output Circuit (1) When the output is off, excessive voltage is applied to the load (triac output). Case • The load is half-wave rectified internally. (In some cases this is true of solenoids.) TRIAC output module Cause Load •...
  • Page 78 (b) Case 2 Case • When the load current is low (lower than 25mA), the triac does not operate and the load current flows to a phototriac as indicated by the arrows in the figure below. If an inductive load is connected as a load in this situation, the load may not turn off because the surge at the time of off is applied to the phototriac.
  • Page 79 CHAPTER 8 TROUBLESHOOTING (3) A load momentarily turns on when powering on the external power supply. Case An incorrect output occurs due to floating capacitance(C) between collector and emitter of photocoupler. When a high sensitivity load (such as solid state relay) is used, this incorrect output may occur. Output module Photocoupler Output Y0...
  • Page 80 (4) A load momentarily turns on from off when the system is powered off (transistor output). Case When an inductive load is connected, 2) Load may turn on from off due to a diversion of back EMF at 1) Shutoff. Transistor Transistor output module...
  • Page 81 CHAPTER 8 TROUBLESHOOTING (5) The load operates due to powering on the external power supply (transistor output). Case • The polarity of the external power supply is connected in reverse. Transistor output module Load Incorrect Correct External Cause power supply Output element protection diode •...
  • Page 82 (7) When an output is turned on, a load connected to the other output is also turned on (transistor output (source type)). Case If the wire connecting 0V of an external power supply and a common of a load is cut off or disconnected, a current flows to the load that is off due to a parasitic circuit of the output element that is off.

  • Page 83: Appendices

    APPENDICES APPENDICES Appendix 1 Optional Items Appendix 1.1 Connector/terminal block converter modules Model Name Description Weight Applicable wire size Applicable solderless terminal For positive common type input module and 1.25-3.5(JIS) A6TBXY36 0.4kg sink type output module (Standard type) 1.25-YS3A V1.25-M3 For positive common type input module and A6TBXY54 0.5kg...
  • Page 84 (3) Part names A6TBXY36 A6TBXY54 A6TBX70 Name Description Panel mounting holes Used to mount the module to panel (for included screws(M4)). Terminal blocks Used to connect power supply and I/O signal wires. 40-pin connector Used to connect the ACTB. (Page 87, Appendix 1.3 (1)) Module joint levers Used to mount the module to a DIN rail.
  • Page 85 APPENDICES (4) Terminal connections • A6TBXY36 24VDC When connecting an input module Input module 24VDC When connecting an output module Load Sink type Output module 24VDC Load Output Source type module...
  • Page 86 • A6TBXY54 24VDC When connecting an input module 2-wire type sensor Input module 24VDC When connecting an output module Load Sink type Output module 24VDC Load Source type Output module...
  • Page 87 APPENDICES • A6TBX70 24VDC 3-wire type sensor 2-wire type sensor Input module...

  • Page 88: Appendix 1.2 Relay Terminal Module (A6Te2-16Srn)

    Appendix 1.2 Relay terminal module (A6TE2-16SRN) The A6TE2-16SRN is used in place of joint terminal blocks and in-panel relays for saving man-hour for wiring across a programmable controller, a relay terminal block and relays in the control panel. For details on the relay terminal module and dedicated cables with connector, refer to the following. Relay Terminal Module User's Manual (Hardware) A6TE2-16SRN A6TE2-16SRN Item...

  • Page 89: Appendix 1.3 Dedicated Cables With Connector

    5m, for sink type modules AC100TE 10m, for sink type modules Appendix 1.4 Converter modules and interface modules (FA goods) Converter modules and interface modules are offered by Mitsubishi Electric Engineering Co., Ltd. For the details, please consult your local Mitsubishi representative.

  • Page 90: Appendix 2 Checking Serial Number

    Appendix 2 Checking Serial Number For checking serial number, refer to the following. MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) MELSEC-L CC-Link IE Field Network Head Module User's Manual...

  • Page 91: Appendix 3 Compatibility Of L Series And Q Series I/O Module

    APPENDICES Appendix 3 Compatibility of L series and Q series I/O module The following shows compatibility of I/O modules of L series and Q series. (1) 18-point screw terminal block module Item Compatibility with Q series Differences with Q series Terminal block Can not be used.

  • Page 92: Appendix 4 When Using Gx Developer

    Appendix 4 When Using GX Developer This section describes the method of the I/O module settings with GX Developer. (1) Input response time setting Set the input response time in I/O Assignment of PLC Parameter. Project window  [Parameter]  [PLC Parameter]  [I/O Assignment] The setting method is the same as when using GX Works2.

  • Page 93: Appendix 5 External Dimensions

    APPENDICES Appendix 5 External Dimensions Appendix 5.1 I/O modules (1) 18-point screw terminal block DIN rail center 28.5 (Unit: mm)
  • Page 94 (2) 40-pin connector (a) 32-point module DIN rail center 28.5 (Unit: mm) (b) 64-point module DIN rail center 28.5 (Unit: mm)

  • Page 95: Connectors

    APPENDICES Appendix 5.2 Connectors A6CON1 (soldering type 40-pin connector), A6CON2 (crimp-contact type 40-pin connector) Side view A Side view A 72.72 (Unit: mm) A6CON3 (pressure-displacement type 40-pin connector) 69.48 (Unit: mm) A6CON4 (soldering type 40-pin connector) Side view A Side view A Side view A (Unit: mm) The cable may run off from the cable cramp when the size is thinner than that of the cramp.

  • Page 96: Appendix 5.3 Connector/Terminal Block Converter Modules

    Appendix 5.3 Connector/terminal block converter modules A6TBXY36 Screws (M3.5) 2- 4.5 Mounting holes 89.6 (Unit: mm) A6TBXY54 Screws (M3.5) 2- 4.5 Mounting holes (M4 25) 124.6 (Unit: mm) A6TBX70 Screws (M3.5) 2- 4.5 Mounting holes (M4 25) 159.6 (Unit: mm)

  • Page 97: Appendix 5.4 Cable For Connector/Terminal Block Converter Module

    APPENDICES Appendix 5.4 Cable for connector/terminal block converter module 69.48 69.48 (Unit: mm)

  • Page 98: Revisions

    This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.

  • Page 99: Warranty

    WARRANTY Please confirm the following product warranty details before using this product. 1. Gratis Warranty Term and Gratis Warranty Range If any faults or defects (hereinafter "Failure") found to be the responsibility of Mitsubishi occurs during use of the product within the gratis warranty term, the product shall be repaired at no cost via the sales representative or Mitsubishi Service Company.

  • Page 100: Trademarks

    TRADEMARKS The company names, system names and product names mentioned in this manual are either registered trademarks or trademarks of their respective companies.   In some cases, trademark symbols such as ' ' or ' ' are not specified in this manual. SH(NA)-080888ENG-J...
  • Page 102 SH(NA)-080888ENG-J(2403)MEE MODEL: L-IO-U-E MODEL CODE: 13JZ34 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS: 1-14, YADA-MINAMI 5-CHOME, HIGASHI-KU, NAGOYA 461-8670, JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission. Specifications subject to change without notice.

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