Mitsubishi Electric A800 User manual

Sequence ControlSequence Control
FR Configurator2 Compatible
INVERTER
A800 PLC Function Quick Start Guide
For Beginners

1
READ BEFORE USING 
Before using this product, read this Quick Start Guide and the related manuals referenced in this guide.
Take all safety precautions and use the product correctly.
[Safety precautions for using the inverter]
WARNING
Do not touch the terminals while power is ON. Otherwise you may get an electric shock.
Before opening the front cover, turn OFF the power or ensure safety.
CAUTION
If a fault occurs, immediately stop using the product.
[Detailed information]
This guide describes the basic procedures for using the PLC function. For further details, refer to the
related manuals.
The related manuals are included in the CD-ROM packed with the product.
The manuals are also available for download at MITSUBISHI ELECTRIC FA Global Website (http://
www.Mitsubishi Electric.co.jp/fa), the Mitsubishi Electric FA network service on the world wide web.
The manuals related to this guide are shown below.
[Supplementary information]
• In this guide, operations are described using FR Configurator2 (Developer) Version 1.01. Depending on the
software version used, different menus or screens may appear.
• For consultation and inquiries concerning the PLC function, please contact your sales representative.
Manual name Manual number
FR-A800 Instruction Manual (Startup) IB-0600493
FR-A800 Instruction Manual (Detailed) IB-0600503ENG
FR-A800 PLC Function Programming Manual IB-0600492ENG
FR Configurator2 Instruction Manual IB-0600516ENG
GX Works2 Version 1 Operating Manual (Common) SH-080779ENG
Microsoft, Windows, Windows NT, and Windows Vista are registered trademarks of Microsoft Corporation in the
United States and/or other countries.
Other company and product names herein are the trademarks and registered trademarks of their respective
owners.

2
3
Introduction
Introduction
How to read this guide ............................................................................2
Benefits of using the Mitsubishi A800 PLC function ...........................3
Before using the PLC function...............................................................4
Wiring of the inverter ..............................................................................6
Checking power-ON ................................................................................8
Programming ...........................................................................................9
Writing a program to the inverter.........................................................17
Checking the operation.........................................................................20
Making a program easy to understand <Comment>..........................22
Monitoring the device value/status <Device monitor> ......................28
Changing the device value <Device test> ...........................................32
Checking errors <Error jump> .............................................................33
1. How to read this guide
The following table shows the symbols used in this guide and their descriptions.
Symbol Description
This symbol indicates the necessary information.
This symbol indicates the reference manual or the page where details
can be found.
This symbol indicates that a technical term is explained.
This symbol indicates precautions mandatory for the operation.
Point
Reference
Terminology
CONTENTS

3
Introduction
2. Benefits of using the Mitsubishi A800 PLC function
Inverter operation sequence customized for the machine
Inverter control such as inverter operations triggered by input signals, signal output according to the inverter
operating status, and monitor output can be freely customized according to the machine specifications, which
enhances the possibilities of the inverter. For example, for opening/closing of a shutter, a signal from a sensor is
used to check the number of opening and closing times. By controlling the opening/closing speed, various
shutter operations can be achieved. Control programs can be created in sequence ladders using FR
Configurator2 (Developer).
Optimum for the decentralized control
The control of the whole system is decentralized to inverters, and each inverter can manage their subordinating
devices.
A group of dedicated sequence programs is created and saved in each inverter. Therefore, the master controller
does not process all the sequence programs, and the decentralized system accepts program changes more
flexibly.
Automatic operation in accordance with the time
With the real-time clock function, automatic operation can be performed at certain times (when the optional FR-
LU08 is used).
User-configurable parameter, protective function, and monitor settings
User parameter
Up to 50 user parameters can be saved. The user parameters are linked with the data registers for the PLC
function. Therefore, changing a user parameter also changes the linked data register.
User initiated fault
Up to five specific fault-initiating conditions can be set to activate a protective function and shut off the inverter
output.
User monitor setting
User-defined data can be displayed on the operation panel.
Useful functions
Inverter parameter read/write
Parameter settings can be changed using sequence programs. The acceleration/deceleration time and patterns
can also be changed according to the operating status. RAM or EEPROM can be selected to save the parameter
settings. When the settings are changed frequently, select RAM.
PID function
Two different loops of PID inverter operations can be preset and controlled using sequence programs.
Inverter operation lock
The inverter operation can be locked against command sources other than the sequence programs.
Outline of the PLC function
Item Description
I/O
General-purpose I/O
Sequence programs enable I/O signal transmission to/from the inverter and its plug-in options.
Analog I/O Sequence programs enable analog I/O transmission to/from the inverter and its plug-in options.
Pulse train I/O Sequence programs enable pulse train inputs (to terminal JOG) and pulse train outputs
(from terminal F/C (FM)).
Inverter parameter
read/write Sequence programs enable inverter parameter read/write.
User parameter Fifty user parameters (Pr.1150 to Pr.1199) are available and are linked with data registers
D206 to D255, which accept direct access by sequence programs.
CC-Link Installing a plug-in option (FR-A8NC) enables data communication between sequence
programs and master modules.
Special
function
PID operation Inverter PID operations can be controlled (up to two loops) using sequence programs.
User initiated fault Up to five fault-initiating conditions can be set to activate a protective function.
Fault clear The protective function occurring in the inverter can be reset.
Inverter operation lock Inverters can start up while the PLC function is running.
User monitor setting User-defined data can be displayed on the operation panel.

4
3
Preparation
Preparation
3. Before using the PLC function
Procedure before using the PLC function
Description Refer to
page
Using FR Configurator2
(Developer), create a PLC
function project data
model (program).
page 9
Write the created project
data model (program) via
a USB cable to the
inverter.
page 17
Check the operation. page 20
Install
Personal computer + FR Configurator2 (Developer)
Project data
USB cable
A800
PLC function indicator
FWD
REV
STOP
RESET
REV
FWD
STOP
RESET
P.RUN
PU
EX T
NET
MON
PRM
IM
PM
FR-DU08
A connector Mini B
connector

5
Preparation
Example system configuration
In this guide, the system configuration below is used as an example.
This system configuration is just an example and various other configurations are available.
Inputs and outputs are configured as switches and lamps respectively.
* The inverter and I/O power supply cables are not shown.
Required system components
The following table shows the minimum system requirements for this guide.
Equipment Description
Personal computer Creates sequence programs and writes them to the inverter.
FR Configurator2 (Developer) (SW1DND-FRC2-E)
USB cable
Connects the personal computer and the inverter.
Recommended USB cable: MR-J3USBCBL3M (cable length 3 m)
Sequence start switch Sequence program execution key.
Switches between RUN and STOP.
Input resistance 4.7 kΩ
Voltage when contacts are open:
21 to 27 VDC
When contacts are short-circuited:
4 to 6 mADC
Switch (input): 3 Connected to the external input terminal of
the inverter.
Lamp (output): 3 Connected to the external output terminal
of the inverter.
Permissible load 24 VDC
(maximum 27 VDC) 0.1 A
(The voltage drop is 2.8 V at
maximum while the signal is ON.)
24 VDC power supply Power supply for the indicator lamps
Switch (input) Lamp (output)Inverter
USB cable
Lamp 1
Lamp 2
Lamp 3
Switch 2
Switch 3
Switch 1
To personal computer
SQ signal
Connector for inverter
Mini B connector (5 pins)
Connector for personal
computer
A connector

3
Preparation
6
Preparation
4. Wiring of the inverter
Perform wiring of the inverter.
Wiring of the power supply
The following shows an example of wiring of the power supply cables and the earthing (grounding)
cable. Earthing (grounding) is performed to prevent electric shocks and malfunctions.
The terminal layout depends on the inverter capacity.
Always switch the inverter power OFF before performing inverter wiring work.
Reference
For the details of wiring, refer to the FR-A800 Instruction Manual (Detailed) (IB-0600503ENG).
Example of 0.4K
R/L1 S/L2 T/L3
P/+
PR
PX
Power
supply Earth
(ground)

7
Preparation
Wiring of the I/O signals
The following shows an example of wiring of the I/O signal cables.
AM
2 5 4 SD SD S1 S2 PC A1 B1 C1 A2 B2 C2SIC SOC
510E 10 FU PC RL RM RT AU CSSTP MRS JOG
Lamp 1
Signal: Y0
Lamp 2
Signal: Y1
Lamp 3
Signal: Y2
Switch
Signal: SQ
Switch 1
Signal: X0
Switch 2
Signal: X1
Switch 3
Signal: X2
24VDC
Output
common
Input
common
SD
F/C +24 SO1
STRSTF
SDRES
RH
OL
SU
SE
L
SE
RUN
LL
IPF

3
Preparation
8
Preparation
5. Checking power-ON
After the wiring is completed, check that the power is properly supplied to the inverter.
1. Checking before power-ON
• Wiring of the power supply
• Power supply voltage
• Check that the connected switches (page 7) are OFF.
2. Turning the power ON
Check that the LED indicator on the operation panel (FR-DU08) is ON.
3. Changing the inverter parameter settings
Perform parameter settings to use the PLC function.
Enable the PLC function.
Set "2" in Pr.414 PLC function operation selection.
Sequence start (SQ) signal input terminal setting (sequence program execution key (STOP/RUN) setting)
Set "50" in Pr.189.
I/O terminal assignment change
Set "9999" in Pr.178, Pr.179, and Pr.182, and Pr.190, Pr.191, and Pr.192.
Setting "9999" for the I/O terminals enable the use of the terminals as general-purpose I/O terminals.
Consequently, the I/O terminals will be changed as follows.
Operating procedure
Pr. Input terminal
name
Device
number Pr. Output terminal name
Device
number
178 STF X0 190 RUN Y0
179 STR X1 191 SU Y1
182 RH X2 192 IPF Y2
Point
The SQ signal can be assigned to the terminals other than the terminal RES. For the SQ signal,
set "50" to any of Pr.178 to Pr.189 (input terminal function selection) to assign the function
to the inverter input terminal. (Refer to the Instruction Manual (Detailed) of the inverter for the
details.)
Terminology
Parameter: Setup information necessary to operate the inverter. By setting parameters, the
PLC function is enabled, or the complicated motor control can be achieved.

9
Creating a sequence program
6. Programming
Create a program (sequence program) for sequence control.
For details, refer to the GX Works2 Version 1 Operating Manual (Common) (SH-080779ENG).
"Devices" and "Instruction symbols" for programming
Combine "Devices" and "Instruction symbols" to create a sequence program.
1. Devices
Devices include two types: bit devices and word devices.
A bit device handles one-bit information such as the ON/OFF of a switch or a lamp.
Examples of bit devices
A word device handles 16-bit information such as numeric values and character strings.
Examples of word devices
Device name Device symbol Description
Input X Receives a signal from an external device such as a switch.
Output Y Outputs a signal to an external device such as a lamp.
Internal relay M Temporarily stores status data in programs.
Timer
(contact) TUsed to measure time. (When the set time comes, the contact turns ON.)
Counter
(contact) CUsed to count the number of times the input condition turns from OFF to ON. (When the number of retries reaches the set number, the contact turns ON.)
Device name Device
symbol Description
Data register D Stores numeric values and character strings.
Timer
(present value) TUsed to measure time.
(Stores the present time value being measured.)
Counter
(present value) CUsed to count the number of times the input condition turns from OFF to
ON. (Stores the present count value being measured.)
Terminology
Device: An area to store data such as ON/OFF status, numeric values, and character strings for the
PLC function.
Internal relay: A device that shuts off/connects the sequence circuit by switching ON/OFF.
Contact: An input used for creating a sequence program.
• ON/OFF of a switch • ON/OFF of a lamp
• Numeric value • Character string