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Mitsubishi MELSEC-Q QD77MS User Manual

Mitsubishi MELSEC-Q QD77MS
976 pages
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Table of Contents

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Mitsubishi MELSEC-Q QD77MS Specifications

General IconGeneral
CategoryControl Unit
Power Supply24 VDC
Positioning Command Resolution1 pulse
Current Consumption0.5 A
Control MethodPosition control, speed control, torque control
Positioning Data600 points per axis

Summary

SAFETY PRECAUTIONS

CONDITIONS OF USE FOR THE PRODUCT

(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;

Specifies conditions for using the programmable controller, focusing on safety and fail-safe functions.

(2) The PRODUCT has been designed and manufactured for the purpose of being used in general industries.

Outlines Mitsubishi's liability limitations for unintended applications or misuse of the product.

INTRODUCTION

REVISIONS

COMPLIANCE WITH THE EMC AND LOW VOLTAGE DIRECTIVES

RELEVANT MANUALS

(1) Simple motion module

Lists manual names and descriptions for Simple Motion Modules like MELSEC-Q QD77MS and QD77MS/LD77MH.

(2) CPU module

Lists manual names and descriptions for CPU modules like QCPU and QnUCPU.

(3) Programming tool

Lists manual names and descriptions for programming tools like GX Works2.

(4) Servo amplifier

Lists manual names and descriptions for various SSCNET interface servo amplifiers.

MANUAL PAGE ORGANIZATION

TERMS

PACKING LIST

Chapter 1 Product Specifications and Handling

1. Product Outline

Provides an overview of the QD77MS specifications and functions, and outlines procedures for installation and wiring.

1.1 Positioning control

Explains positioning control concepts, QD77MS features, purpose, mechanism, functions, and system design.

1.2 Flow of system operation

Details the system operation flow, including installation, wiring, preparation, operation, and maintenance steps.

Chapter 2 System Configuration

2.1 General image of system

Provides an overview of the system configuration involving QD77MS, PLC CPU, and peripheral devices.

2.2 Component list

Lists the necessary devices for configuring the QD77MS positioning system.

2.3 Applicable system

Details the compatible CPU modules and base units for system configuration.

2.4 How to check the function version and SERIAL No.

Explains methods to check the function version and serial number of the QD77MS.

Chapter 3 Specifications and Functions

3.1 Performance specifications

Details the performance specifications of QD77MS models including control axes, operation cycle, interpolation functions, and speed command ranges.

3.2 List of functions

Categorizes and explains the main functions of QD77MS, including OPR control, major positioning control, high-level positioning control, manual control, expansion control, and common functions.

3.3 Specifications of input/output signals with PLC CPU

Lists and details the input/output signals used for data exchange between QD77MS and the PLC CPU.

3.4 Specifications of interfaces with external devices

Explains electrical specifications, signal layouts, and internal circuits for external device connections.

3.5 External circuit design

Provides guidance on configuring power supply circuits and main circuits for forced stop upon alarm detection.

Chapter 4 Installation, Wiring and Maintenance of the Product

4.1 Outline of installation, wiring and maintenance

Explains procedures for installation, wiring, and maintenance, including precautions to prevent malfunctions and injuries.

4.2 Installation

Details the precautions for installing the QD77MS, covering handling, mounting, and screw tightening.

4.3 Wiring

Provides precautions for wiring, including terminal layout, connector connections, and cable routing to prevent interference.

4.4 Confirming the installation and wiring

Lists items to confirm after installation and wiring, using GX Works2 positioning test function for verification.

4.5 Maintenance

Covers precautions for servicing the QD77MS, including daily inspections and part replacement.

Chapter 5 Data Used for Positioning Control

5.1 Types of data

Explains the parameters and data used for positioning control, including setting data, monitor data, and control data.

5.2 List of parameters

Details the setting items for positioning parameters, OPR parameters, expansion parameters, and servo parameters.

5.3 List of positioning data

Explains the configuration of positioning data stored in the QD77MS buffer memory.

5.4 List of block start data

Explains the organization of block start data stored in the QD77MS buffer memory for high-level positioning control.

5.5 List of condition data

Explains the condition data setting items such as Condition target, Condition operator, Address, Parameter 1, and Parameter 2, which are used for conditional judgments.

5.6 List of monitor data

Explains the monitor data area storing data related to the operating state of the positioning system.

5.7 List of control data

Explains the setting items of control data used for controlling the positioning system.

Chapter 6 Sequence Program Used for Positioning Control

6.1 Precautions for creating program

Provides common precautions for writing data from PLC CPU to QD77MS buffer memory, including data handling and speed change restrictions.

6.2 List of devices used

Lists the devices used in sequence programs with QD77MS4, including I/O numbers and applications.

6.3 Creating a program

Explains the general configuration of the positioning control operation program and program details.

6.4 Positioning program examples

Provides example programs for positioning operations using QD77MS4, illustrating various controls.

6.5 Program details

Details specific programs like initialization, start details, start, interrupt, restart, and stop programs.

Chapter 7 Memory Configuration and Data Process

7.1 Configuration and roles of QD77MS memory

Explains the configuration and roles of the four memories within the QD77MS.

7.2 Data transmission process

Details the data transmission patterns between QD77MS memories, PLC CPU, and servo amplifiers.

Chapter 8 OPR Control

8.1 Outline of OPR control

Explains the concept of OPR control, including its purpose and the two defined types: Machine OPR and Fast OPR.

8.2 Machine OPR

Details the operation of Machine OPR, including establishing the OP position and methods for its establishment.

8.3 Fast OPR

Explains the outline and operation timing of Fast OPR, which executes positioning to the OP position without using a near-point dog or zero signal.

8.4 Selection of the OPR setting condition

Covers the conditions for selecting OPR settings, emphasizing the importance of the servomotor's home position return and zero point signal.

Chapter 9 Major Positioning Control

9.1 Outline of major positioning controls

Introduces major positioning controls like position control, speed control, and switching controls, and how they use positioning data.

9.2 Setting the positioning data

Explains how to set positioning data for various controls, including linear, circular, and speed controls.

Chapter 10 High-Level Positioning Control

10.1 Outline of high-level positioning control

Explains high-level positioning control, which uses block start data and condition data for applied control.

10.2 High-level positioning control execution procedure

Details the step-by-step procedure for executing high-level positioning control, including preparation, setting, programming, and monitoring.

10.3 Setting the block start data

Covers setting block start data items like Shape, Start data No., Special start instruction, and Parameter, which are essential for high-level positioning control.

10.4 Setting the condition data

Explains setting condition data items such as Condition target, Condition operator, Address, Parameter 1, and Parameter 2, which are used for conditional judgments.

10.5 Multiple axes simultaneous start control

Describes how to start and control multiple axes simultaneously by outputting commands at the same timing.

10.6 Start program for high-level positioning control

Provides example programs for high-level positioning control, explaining procedures and timing charts.

Chapter 11 Manual Control

11.1 Outline of manual control

Introduces manual control methods, including JOG operation, inching operation, and manual pulse generator operation.

11.2 JOG operation

Explains the outline, execution procedure, required parameters, start programs, and examples of JOG operation.

11.3 Inching operation

Details the outline, execution procedure, required parameters, programs for enabling/disabling, and examples of inching operation.

11.4 Manual pulse generator operation

Covers the outline, execution procedure, required parameters, and programs for manual pulse generator operation.

Chapter 12 Expansion Control

12.1 Speed-torque control

Explains the details and usage of speed-torque control, covering its outline, required parameters, data settings, and operation.

Chapter 13 Control Sub Functions

13.1 Outline of sub functions

Introduces sub functions that supplement main functions, including those for OPR, control compensation, and limiting.

13.2 Sub functions specifically for machine OPR

Explains OPR retry and OP shift functions, which are specifically for machine OPR.

13.3 Functions for compensating the control

Details functions for compensating control, such as backlash compensation, electronic gear, and near pass functions.

13.4 Functions to limit the control

Covers functions for limiting control, including speed, torque, software stroke, hardware stroke, and forced stop.

13.5 Functions to change the control details

Explains functions for changing control details like speed, override, acceleration/deceleration time, torque, and target position.

13.6 Absolute position system

Describes how to construct an absolute position system using QD77MS and SSCNET/H, including precautions.

13.7 Other functions

Explains various other functions like Step, Skip, M code output, Teaching, Command in-position, Acceleration/deceleration processing, Pre-reading start, Deceleration start flag, Stop command processing, Speed control 10x multiplier, and Operation setting for incompletion of OPR.

13.8 Servo ON/OFF

Details the procedure for servo ON and servo OFF operations.

Chapter 14 Common Functions

14.1 Outline of common functions

Introduces common functions executed according to the user's requirements, such as parameter initialization and execution data backup.

14.2 Parameter initialization function

Explains the function to return parameters to factory-set initial values.

14.3 Execution data backup function

Details the function to back up execution data to flash ROM/internal memory.

14.4 External signal selection function

Covers selecting external input signals for QD77MS, servo amplifier, or PLC CPU.

14.5 External I/O signal logic switching function

Explains how to switch I/O signal logic according to connected equipment.

14.6 History monitor function

Describes the function to monitor starting history, error history, and warning history.

14.7 Amplifier-less operation function

Explains how to execute positioning control without connecting servo amplifiers, useful for debugging or simulation.

14.8 Virtual servo amplifier function

Covers the function that executes operation as a virtual servo amplifier axis.

14.9 Mark detection function

Explains the function to latch data at the input timing of the mark detection signal.

14.10 Optional data monitor function

Details the function to store and monitor selected data for each axis.

14.11 Module error collection function

Explains how the QD77MS collects errors in the PLC CPU and stores them for history checking.

14.12 Connect/disconnect function of SSCNET communication

Describes the function to temporarily connect/disconnect SSCNET communication.

14.13 QD75MH initial value setting function

Explains how to set the factory-set initial value of QD75MH.

Chapter 15 Dedicated Instructions

15.1 List of dedicated instructions

Lists the dedicated instructions available for facilitating programming of QD77MS functions.

15.2 Interlock during dedicated instruction is executed

Explains interlocks related to the simultaneous execution of positioning start and teaching instructions.

15.3 ZP.PSTRT1, ZP.PSTRT2, ZP.PSTRT3, ZP.PSTRT4

Details the dedicated instructions used to start positioning of a designated axis.

15.4 ZP.TEACH1, ZP.TEACH2, ZP.TEACH3, ZP.TEACH4

Explains the dedicated instructions used to teach the designated axis.

15.5 ZP.PFWRT

Describes the dedicated instruction used to write parameters, positioning data, and block start data to flash ROM.

15.6 ZP.PINIT

Explains the dedicated instruction used to initialize setting data to factory-set values.

Chapter 16 Troubleshooting

16.1 Checking errors using GX Works2

Guides users on how to check errors and their details using the "Module's Detailed Information" and "Error History" screens in GX Works2.

16.2 Checking errors using a display unit

Explains how to check errors in QD77MS without software package by using a display unit.

16.3 Troubleshooting

Provides troubleshooting steps based on LED indicators for power supply, module connection, and system errors.

16.4 Error and warning details

Lists various errors and warnings detected by QD77MS, including their causes and corrective actions.

16.5 List of errors

Details QD77MS detection errors and servo amplifier detection errors, including error codes, names, and operation status.

16.6 List of warnings

Lists system warnings, axis warnings, and servo amplifier warnings detected by QD77MS.

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