Mitsubishi Electric MELSEC-Q Insulation Monitoring Module(QE82LG) User Manual

Mitsubishi Programmable Controller

Insulation Monitoring Module

User s Manual (Details)

QE82LG

IB63564H

●

SAFETY PRECAUTIONS

●

(Read these precautions before using this product.)

This manual contains important instructions for MELSEC-Q series QE82LG.

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 of the CPU module used.

In this manual, the safety precautions are classified into two levels: "DANGER" and "CAUTION".

DANGER

CAUTION

Indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury.

Indicates that incorrect handling may cause hazardous conditions, resulting in medium or slight personal injury or physical damage.

Under some circumstances, failure to observe the precautions given under “ CAUTION” may lead to serious consequences

．

Observe the precautions of both levels because they are important for personal and system safety.

Keep this manual in an accessible place for future reference whenever needed, and make sure it is delivered to the end user.

[Precautions for Operating Environment and Conditions]

Caution



Do not use this product in the places listed below. Failure to follow the instruction may cause malfunctions or decrease of product-life.

- Places the Ambient temperature exceeds the range 0 ºC to +55 ºC.

- Places the Relative humidity exceeds the range 5 % to 95 % or condensation is observed.

- Altitude exceeds 2000 m.

- Places exposed to rain or water drop.

- Dust, corrosive gas, saline and oil smoke exist.

- Vibration and impact exceed the specifications.

- Installation on excluding the control board

A - 1

[Design Precautions]

Danger



Do not write data into “System Area” in the buffer memory of the intelligent function module.

Also, do not output (turn ON) the “use prohibited” signal in the output signal sent from the sequencer CPU to the intelligent function module.

Doing so may cause a malfunction to the sequencer system.

Caution



Do not install the input signal wire together with the main circuit lines or power cables. Keep a distance of 300 mm or more between them. (Except for the terminal input part) Failure to do so may result in malfunction due to noise.



This module can not be used as an Electric Leakage Relay.

[Installation Precautions]

Caution



Any person who is involved in the installation and the wiring of this Sequencer should be fully competent to do the work.



Use the programmable controller in an environment that meets the general specifications in the

User’s manual of the CPU module used.

Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.



To mount the module, while pressing the module-mounting lever located in the lower part of the module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the module until it snaps into place.

Incorrect mounting may cause a malfunction, failure or a fall of the module.

When using the Sequencer in an environment of frequent vibrations, fix the module with a screw.



Tighten the screws within the specified torque range.

Fixing-Module screw (arranged by user): M3 x 12 mm

Tightening torque of the fixing-module screws 0.36 N•m to 0.48 N•m

When the screw tightening is loose, it causes a fall, short-circuit, and a malfunction.

Over-tightening can damage the screws and the module, and it may cause a fall, short-circuit, or a malfunction.



Shut off the external power supply for the system in all phases before mounting or removing the module. Failure to do so may result in damage to the product.



Do not touch directly any conductive parts and electronic parts of the module.

Doing so can cause a malfunction or failure of the module.

A - 2

[Wiring Precautions]

Danger



For installation and wiring works, make sure that the power source is shut off for all outside phases.

If all phases are not turned off, it may cause an electric shock or product damages.

Caution



FG terminal must be grounded according to the D-type ground (Type 3) dedicated for sequencer.

Failure to do so may result in electric shock or malfunction.



When using this product, make sure to use it in combination with Mitsubishi’s zero-phase current transformer (ZCT). Please not to exceed the ratings of this product for input of zero phase transformer. For fur

th

er details, please refer to zero phase transformer manual to maintain the functionality and the accuracy of this product .

Split-type ZCT

CZ-22S , CZ-30S , CZ-55S

CZ-77S , CZ-112S

Through-type ZCT

ZT15B, ZT30B , ZT40B , ZT60B , ZT80B , ZT100B ,

ZTA600A , ZTA1200A , ZTA2000A



This module and the zero-phase current transformer are used for less than 600 V circuit only. They are not used with exceeding 600 V circuit.



Do not open the secondary side of the zero-phase current transformer.



Take care not entering any foreign objects such as chips and wire pieces into the module. It may cause a fire, failure or a malfunction.



In order to prevent the module from incoming foreign objects such as wire pieces during wiring work, a foreign-object preventive label is placed on the module. While a wiring work is performed, keep the label on the module. Before operating the system, peel off the label for heat release. If the foreign-object preventive label is not peeled and the system is in use, residual heat inside the module may reduce the product life.



The wires to be connected to the module shall be put in a duct or fixed together by clamp. If not, the loosing and unstable wire or careless stretching results in poor contact of electric wires. That may cause a breakage of the module or wire or a malfunction.



Use appropriate size of electric wires. If inappropriate size of electric wire is used, it may cause a fire due to generated heat. For appropriate size of electric wires, refer to 7.5.2 How to connect wires.



In case using stranded wire, take measures so that the filament should not vary by using a bar terminal or by processing the point twisted. Use the bar terminal appropriated for the size of electric wires. If using inappropriate bar terminals, a wire breakage or a contact failure may cause a device malfunction, failure, a burnout or a fire.



After wiring, confirm whether there is a wiring forgetting or a faulty wiring. They may cause a device malfunction, a fire, or an electric shock.



When removing the wires connected to the module, do not pull wires as holding on their electric wire portions. Push the buttons on the terminal, and then remove the wire.



If the wires connected to the module are strongly pulled off, it may cause a malfunction or a breakage to the module or the wire. (Tensile load: 22 N or less)



Ensure the wiring to the module properly, checking the rated voltage and current of the product and the terminal pin assignment. If the input voltage exceed the rated voltage or the wiring is improper, it may cause a fire or a breakage.



Do not exceed the specified voltage when doing an insulation resistance test and a commercial frequency withstand voltage test.

A - 3

[Start-up Precautions]

Caution



Use the product within the ratings specified in this manual. When using it outside the ratings, it not only causes a malfunction or failure but also there is a fear of igniting and damaging by a fire.



Before operating the product, check that active bare wire and so on does not exist around the product. If any bare wire exists, stop the operation immediately, and take an appropriate action such as isolation protection.



Do not disassemble or modify the module. It may cause failure, a malfunction, an injury or a fire.



Attaching and detaching the module must be performed after the power source is shut off for all outside phases. If not all phases are shut off, it may cause failure or a malfunction of the module.



Do not touch the live terminal. It may cause a malfunction.

[Maintenance Precautions]

Caution



Cleaning and additional tightening of module-fixing screws must be performed after the input power source is shut off for all outside phases. If not all phases are shut off, it may cause failure or a malfunction of the module.



Use a soft dry cloth to clean off dirt of the module surface.



Do not let a chemical cloth remain on the surface for an extended period nor wipe the surface with thinner or benzene.

Check for the following items for using this product properly for long time.

<Daily maintenance>

(1) No damage on this product (2) No abnormality with LED indicators (3) No abnormal noise, smell or heat.

<Periodical maintenance> (Once every 6 months to 1 year)

(4) Confirm there is loosing in installation, wire connection to terminal blocks, and the connection of the connectors. (Check these items under the power failure condition.)

[Storage Precautions]

Caution



To store this product, turn off the power and remove wires, and put it in a plastic bag.

For long-time storage, avoid the following places. Failure to follow the instruction may cause a failure and reduced life of the product.

- Places the Ambient temperature exceeds the range -25 ºC to +75 ºC.

- Places the Relative humidity exceeds the range 5 % to 95 % or condensation is observed.

- Dust, corrosive gas, saline and oil smoke exist, and vibration and frequent physical impact occur.

- Places exposed to rain or water drop.

[Disposal Precautions]

Caution



Dispose of the product as an industrial waste.

A - 4

Revision history

Printed date * Manual number

Jan, 2011 IB-63564

Sep, 2011

Aug. 2012

Jul. 2013

Nov. 2013

IB-63564-A

IB-63564-B

IB-63564-C

IB-63564-D

* Manual number is provided at the bottom of the cover page.

Revision history

First edition

Correction

SAFETY PRECAUTIONS, Section 4.2, Section 8.1, Section 8.3

Addition

SAFETY PRECAUTIONS, Section 2.1, Section 3.2, Section 7.4, Section

9.3

Correction

Section 2.3, Section 7.6, Section 9.1

Correction

Section 2.3, Section 7.6, Section 7.7, Section 8.2, Section 9.3

Addition

Section 1.1, Section 3.1, Section 4.2, Section 6.1, Section 6.3

Correction

Section 4.1, Section 4.2.5, Section 6.1, Section 6.2.2, Section 6.2.3,

Section 6.3.1, Section 6.3.2, Section 6.3.4, Section 6.3.5, Section 6.4.1,

Section 7.6.2, Section 7.6.4, Section 8.2, Section 9.1

Addition

Section 6.1, Section 6.4.3, Appendix 3

Jan. 2016

Jul, 2017

Jan, 2021

Dec, 2021

IB63564E

IB63564F

IB63564G

IB63564H

Correction

Cover, Back cover

Correction

Compliance with the EMC and Low Voltage Directives,

Section 2.1, Section 3.2, Section 6.2, Section 6.3, Section 6.4, Section 7.2,

Section 7.5, Section 7.6, Section 8, Section 9.2, Appendix 2, Appendix 3,

Back cover

Correction


Section 3.2, Back cover

Correction

Precautions for Operating Environment and Conditions,

Installation Precautions, Storage Precautions,


Section 3.1, Section 3.2, Section 4.1, Section 4.2, Section 6.1,

Section 7.1, Section 7.4, Section 7.5, Section 7.6, Section 9.1,

Appendix 2, Back cover

This manual does not guarantee to protect or does not give a permission to any industrial property and any related rights.

Also, our company shall not be held any responsible for any issues related to industrial properties due to product usage described in this manual.

 2011 MITSUBISHI ELECTRIC CORPORATION

A - 5

Table of Content

SAFETY PRECAUTIONS ········································································································· A-1

Revision history ······················································································································· A-5

Table of content ······················································································································ A-6

Compliance with the EMC and Low Voltage Directives ···································································· A-8

Names, abbreviations, terminology ···························································································· A-9

Product configuration ··············································································································· A-9

Chapter 1: Overview 1-1

1.1 Features ··························································································································· 1-1

Chapter 2: System Configuration 2-1 - 2-4

2.1 Applicable system ··············································································································· 2-1

2.2 Precautions for system configuration ······················································································ 2-3

2.3 How to check the function version, serial number, and module version ·········································· 2-3

Chapter 3: Specifications 3-1 - 33

3.1 General specifications ········································································································· 3-1

3.2 Electrical and mechanical specifications ·················································································· 3-2

Chapter 4: Functions 4-1 - 4-11

4.1 List of functions ·················································································································· 4-1

4.2 Functions in detail ············································································································· 4-2

Chapter 5: I/O signal to CPU module 5-1 - 5-7

5.1 List of I/O signals ················································································································ 5-1

5.2 Details of I/O signals ··········································································································· 5-2

Chapter 6: Buffer memory 6-1 - 6-13

6.1 Buffer memory assignment ··································································································· 6-1

6.2 Configurable sections (Un \ G0 to Un \ G1100, Un \ G2000 to Un \ G2100) ·········································· 6-4

6.3 Measurable sections (Un \ G1100 to Un \ G1999, Un \ G2100 to Un \ G2999) ······································ 6-6

6.4 Common sections (Un \ G3000 to Un \ G4999) ·········································································· 6-12

Chapter 7: Setting and procedure for operation 7-1 - 7-2 5

7.1 Precautions for handling ································································································ 7-1

7.2 Procedure for operation ·································································································· 7-2

7.3 Name and function of each part ························································································· 7-3

7.4 Attaching and removing the module ··················································································· 7-5

7.5 Connecting wires, wiring ·································································································· 7-7

7.6 Setting from GX Works2 ································································································ 7-1 5

7.7 Setting from GX Developer ···························································································· 7-2 1

A - 6

Chapter 8: Programming 8-1 - 8-8

8.1 Programming procedure ····································································································· 8-1

8.2 System configuration and usage conditions for sample program ················································· 8-2

8.3 Sample programming ········································································································· 8-4

Chapter 9: Troubleshooting 9-1 - 9-8

9.1 List of error codes ············································································································· 9-1

9.2 Troubleshooting ················································································································· 9-4

9.3 Q&A································································································································· 9-7

Appendix Appendix 1 - 7

Appendix 1: External dimensions ····················································································· Appendix-1

Appendix 2: Optional devices ·························································································· Appendix-2

Appendix 3: Addition or change of functions ····································································· Appendix-7

Index Index 1

A - 7

Compliance with the EMC and Low Voltage Directives

(1) For programmable controller system

To configure a system meeting the requirements of the EMC and Low Voltage Directives when incorporating the Mitsubishi programmable controller (EMC and Low Voltage Directives compliant) into other machinery or equipment, refer to QCPU User's Manual (Hardware Design, Maintenance and Inspection).

The CE mark, indicating compliance with the EMC and Low Voltage Directives, is printed on the rating plate of the programmable controller.

(2) For the product

For the compliance of this product with the EMC and Low Voltage Directives, refer to Section 7.5

Wiring.

In addition, attach ferrite cores to power line of power supply module.

Ferrite cores used in our testing is below.

KITAGAWA INDUSTRIES CO.,LTD.

、 RFC-10

(3) CE marking conformity combination module

This module conforms to CE marking standard in a condition to make combination use with following zero-phase current transformer (ZCT) and cable.

Split-type ZCT

Through-type ZCT cable

Max. cable length

CZ-22S , CZ-30S , CZ-55S

CZ-77S , CZ-112S

ZT15B, ZT30B , ZT40B , ZT60B , ZT80B , ZT100B ,

ZTA600A , ZTA1200A , ZTA2000A

CE marking cable (twisted pair cable )

Single wire:

AWG24 to AWG17 (φ0.5 mm to 1.2 mm)

Stranded wire:

AWG20 to AWG16 (0.3 mm 2 to 1.3 mm 2 )

50m

A - 8

Names, abbreviations, terminology

In this manual, the following names, abbreviations, and terminology are used to explain the insulation monitoring module, unless otherwise specified.

Io1

Ior1

Io2

Ior2

Names, abbreviations, terminology

CH1 Alarm

CH2 Alarm

ZCT

CH1 max. value

CH2 max. value

Date/time of occurrence

CH1 Alarm occurrence count

CH2 Alarm occurrence count

Descriptions of names, abbreviations, terminology

Abbreviation for CH1 leak current.

Abbreviation for CH2 leak current.

Abbreviation for CH1 leak current for resistance.

Abbreviation for CH2 leak current for resistance.

Collective term for Io1 1-step alarm, Io1 2-step alarm, Ior1 1-step alarm, and Ior1 2-step alarm.

Collective term for Io2 1-step alarm, Io2 2-step alarm, Ior2 1-step alarm, and Ior2 2-step alarm.

Collective term for Io1 max. value and its date/time of occurrence, and Ior1 max. value and its date/time of occurrence.

Collective term for Io2 max. value and its date/time of occurrence, and Ior2 max. value and its date/time of occurrence.

Collective term for the year of max. value occurrence, month and day of max. value occurrence, hour and minute of max. value occurrence, and second and day of the week of max. value occurrence.

Collective term for Io1 1-step alarm occurrence count, Io1 2-step alarm occurrence count, Ior1 1-step alarm occurrence count, and Ior1

2-step alarm occurrence count.

Collective term for Io21 1-step alarm occurrence count, Io2 2-step alarm occurrence count, Ior2 1-step alarm occurrence count, and Ior2

2-step alarm occurrence count.

Abbreviation for zero-phase current transformer

Product configuration

The following describes the product configuration.

Model name

QE82LG Insulation monitoring Module

Product name Quantity

1

A - 9

Note

A - 10

1 Overview

QE82LG

Chapter 1: Overview

This manual explains specifications, handling methods, and programming of

Insulation Monitoring Module QE82LG (hereinafter, abbreviated as QE82LG) supporting MELSEC-Q series.

1.1 Features

(1) This enables to measure leak current for safety actions.

By monitoring leak current (Io), risk for electric shock can be detected.

(2) This enables constant monitoring of insulation for equipment.

By monitoring leak current for resistance (Ior), deterioration of equipment insulation can be tracked.

(3) This enables 2-level alarm monitoring during monitoring for each measuring element.

For each leak current (Io) and leak current for resistance (Ior), 2-level alarm monitoring can be performed without a sequence.

(4) This enables to measure two circuits, using one device.

At the power source with the same-phase wire system, a single device can measure two circuits.

(5) This enables to measure sensitive.

By changing setting to high sensitivity mode, this enables to measure from

0.01mA.

1 - 1

2 System Configuration

QE82LG

Chapter 2: System Configuration

2.1 Applicable system

The following describes applicable systems.

(1) Applicable module and the quantity of attachable pieces

(a)When mounted with CPU module

CPU module to which QE82LG can be attached and the number of attachable pieces are shown below.

Depending on the combination of the attached module and the number of attached pieces, lack of power capacity may occur.

When attaching the module, please consider the power capacity.

If the power capacity is insufficient, reconsider the combination of modules to be attached.

Since the number of attachable modules are limited by the power module which used, please refer to the notes on the 2.2 precautions for system configuration.

Attachable CPU Module

CPU Type

Basic model

QCPU

CPU Model

Q00JCPU

Q00CPU

Q01CPU

Attachable quantity.

16

24

Remarks

Q02CPU

Programmable controller

CPU

High performance model QCPU

Process CPU

Redundant CPU

Universal model

QCPU

Q02HCPU

Q06HCPU

Q12HCPU

Q25HCPU

Q02PHCPU

Q06PHCPU

Q12PHCPU

Q25PHCPU

Q12PRHCPU

Q25PRHCPU

Q00UJCPU

Q00UCPU

Q01UCPU

Q02UCPU

Q03UDCPU

Q04UDHCPU

Q06UDHCPU

Q10UDHCPU

Q13UDHCPU

Q20UDHCPU

Q26UDHCPU

Q03UDECPU

Q04UDEHCPU

Q06UDEHCPU

Q10UDEHCPU

Q13UDEHCPU

Q20UDEHCPU

Q26UDEHCPU

Q50UDEHCPU

Q100UDEHCPU

64

64

53

16

24

36

64

2 - 1


QE82LG

Attachable CPU Module

CPU Type CPU Model

Q03UDVCPU

Programmable controller

CPU

High-Speed

Universal model

QCPU

C Controller module

Q04UDVCPU

Q06UDVCPU

Q13UDVCPU

Q26UDVCPU

Q04UDPVCPU

Q06UDPVCPU

Q13UDPVCPU

Q26UDPVCPU

Q06CCPU-V

Q06CCPU-V-B

Q12DCCPU-V

Q24DHCCPU-LS

Q24DHCCPU-V

Q26DHCCPU-LS

Attachable quantity.

64

64

Remarks

(b) When mounted with MELSECNET/H remote I/O station

The table below shows the network modules applicable to the QE82LG and the number of network modules to be mounted.

Depending on the combination with other modules or the number of mounted modules, power supply capacity may be insufficient.

Pay attention to the power supply capacity before mounting modules, and if the power supply capacity is insufficient, change the combination of the modules.

Applicable Network Module

QJ72LP25-25

Number of modules

Remarks

QJ72LP25G

QJ72BR15

64

(c) The base unit can be mounted

QE82LG can be installed to any I/O slot of main base unit and extension base unit.

*1 In case of redundant CPU, can be mounted to the extension base unit only.

Mounted to the main base unit is not allowed.

*2 Limited within the range of I/O points for the CPU module.

(2) For multiple CPU system

The function version of the first released CT input module is C, and the CT input module supports multiple CPU systems.

When using the CT input module in a multiple CPU system, refer to the following.

*QCPU User ’s Manual (Multiple CPU system)

2 - 2


QE82LG

(3) Applicable software package

QE82LG supported software packages are as follows:

(a) Software package for sequencer

Product name Model name

GX Works2 SWnDNC-GXW2

GX Developer SWnD5C-GPPW

Remarks iQ Platform compatible programmable

controller engineering software

MELSEC sequencer programming software.

“n” in the model name is 4 or larger.

2.2 Precautions for system configuration

(1) When attaching it to an expansion base without a power module

If QE82LG is attached to an expansion base without a power module, refer to the user’s manual of the sequencer CPU to be used in order to select the power module and expansion cable.

2.3 How to check the function version, serial number, and module version

(1) How to check the serial number and module version

It can be checked with the serial number label (placed on the right side of

QE82LG).

Module version

19H101

710G1234

Serial No.

2 - 3


(2) How to check the function version and serial number

(a) Checking on the front of the module.

The serial number and function version on the rating plate is shown on the front

(at the bottom) of the module.

QE82LG

Function version

Serial number

(b) Checking on the System monitor dialog box (Product Information List)

To display the system monitor, select [Diagnostics] → [System monitor] and click the Product Information List button of GX Developer.

Point

The serial number displayed on the Product Information List dialog box of GX

Developer may differ from that on the rating plate and on the front of the module.

・ The serial number on the rating plate and front part of the module indicates the management information of the product.

・ The serial number displayed on the Product Information List dialog box of GX

Developer indicates the function information of the product.

The function information of the product is updated when a new function is added.

2 - 4

3 Specifications

QE82LG

Chapter 3: Specifications

3.1 General specifications

Item

Phase-wire system

Ratings Voltage circuit

* 1, * 2 single-phase

2-wire, three-phase

3-wire single-phase

3-wire

Leak current circuit single-phase 2-wire / single-phase 3-wire / three-phase 3-wire

110 V AC , 220 V AC

Specifications

110 V AC (1 - 2 line, 2 - 3 line) 220 V AC (1 - 3 line)

Frequency

Measuring range

Resolution

Allowable tolerance of module

(excluding ZCT)

Measurable circuit count

Data update cycle

Backup for electric blackout

1 A AC

(Zero-phase current transformer (ZCT) is used. It indicates the primary current value of ZCT.)

50Hz to 60 Hz

Low sensitivity mode

High sensitivity mode

: 0 mA to 1000 mA

: 0.00 mA to 100.00 mA



: 1 mA

: 0.01 mA



: Leak current

: ±2.5 % (10 % to 100 % range of Ratings)

: ±2.5 mA (0 % to 10 % range of Ratings)

: Leak current for resistance

: ±2.5 % (10 % to 100 % range of Ratings)

: ±2.5 mA (0 % to 10 % range of Ratings)

: Leak current

: ±2.5 mA

: Leak current for resistance

: ±2.5 mA

2 circuits* 3

Leak current

Leak current for resistance

: 2 seconds or less

: 10 seconds or less

Nonvolatile memory is used.

(Items: Settings, Max. value and date/time of occurrence, Alarm occurrence count )

16 points (I/O assignment: intelligence 16 points) I/O occupation

* 1:110 V, 220 V direct connection is possible. Above 440 V voltage transformer outside (VT) is required.

* 2:In case of measuring leakage current for resistance, it is possible on single-phase 2-wire, single-phase

3-wire, three-phase 3-wire delta circuit.

* 3:The measurement of two circuits is possible at one module in the same system in the same trans.

3 - 1

3 Specifications

QE82LG

3.2 Electrical and mechanical specifications

Item

Consumption

VA

Voltage circuit

Internal current consumption

(5 V DC)

Operating temperature

Operating humidity

Storage temperature

Storage humidity

Operating altitude

Installation area

Operating environment

Vibration resistance

Impact resistance

Over voltage category *1

Pollution degree *2

Equipment category

Applicable wire

(Usable electric wire)

ZCT Input terminal

(Z+, Z terminal) *3

Voltage input terminal

Tightening torque

Commercial frequency withstand voltage

Insulation resistance

Standard

Specifications

Each phase 0.1 VA (at 110 V AC), Each phase 0.2 VA (at 220 V AC)

0.17 A

0 °C to +55 °C (Average daily temperature +35 °C or below)

5 % to 95 % RH (No condensation)

-25 °C to +75 °C

5 % to 95 % RH (No condensation)

2000 m or below

Inside a control panel

No corrosive gas

Conforms to JIS

B 3502,

IEC 61131-2

Intermittent vibration

Frequency

5 Hz to 8.4 Hz

Constant acceleration

-

Half amplitude

3.5 mm

Sweep time

XYZ each

8.4 Hz to

150 Hz

9.8 m/s 2 - direction 10 times

5 Hz to 8.4 Hz - 1.75 mm -

Continuous vibration

8.4 Hz to

150 Hz

4.9 m/s 2 -

Conforms to JIS B 3502, IEC 61131-2 (147 m/s 2 , XYZ each direction 3 times)

II or less

2 or less

Class I

Single wire

Stranded wire *4

AWG24 to AWG17 ( φ0.5 mm to 1.2 mm)

AWG20 to AWG16 (0.5 mm 2 to 1.3 mm 2 )

Single wire

Stranded wire *4

AWG24 to AWG17 ( φ0.5 mm to 1.2 mm)

AWG20 to AWG16 (0.5 mm 2

Module-fixing screws (M3 screw) *5 0.36 N ･ m to 0.48 N ･ m

Between voltage/leak current input terminals – FG terminal

to 1.3 mm 2

2210 V AC

5 sec

)

Between voltage/leak current input terminals – sequencer power source and GND terminal

5 MΩ or more (500 V DC) at locations above

EMC: EN61131-2:2007, EN61326-1:2013

LVD: EN61131-2:2007, EN61010-1:2010

UL Standards: UL508 c-UL Standards: CSA 22.2No.142

KC Marking

2210 V AC

5 sec

External dimensions

Mass

27.4 mm (W) x 98 mm (H) x 90.5 mm (D), excluding protruding portions

0.1 kg

3 - 2

3 Specifications

QE82LG

*1. This indicates the assumed area of electric distribution to which the device is connected, the area ranging from public distribution to factory machinery. The category II applies to the device power-supplied from fixed facility. The surge voltage of this product is 2500 V up to the rated voltage of

300 V.

*2. The index indicates the level of conductive substance at the device’s operating environment.

Contamination level 2 means only non-conductive substance. However, occasional condensation may lead to temporary conduction.

*3. At the connection between ZCT secondary terminal and this module terminal (Z+, Z), each wire has to be twisted for usage.

*4. If stranded wire is used, a bar terminal must be used.

Recommended bar terminal: TGV TC-1.25-11T (Made by Nichifu)

*5. The module can be fixed easily to the base unit, using the hook on top of the module. However, if it is used under a vibrating environment, we strongly recommend that the module be fixed with screws.

3 - 3

4 Functions

QE82LG

Chapter 4: Functions

4.1 List of functions

Functions of QE82LG are provided in Table 4.1-1.

Table 4.1-1 List of functions

No. Function Descriptions

Reference section

It enable measures Io1, Ior1, Io2, and Ior2, and stores the records into a buffer memory as needed.

1 Measurement

2 Hold max. values

3 Alarm monitoring

4

Alarm occurrence count

It changes a low sensitivity mode (0 mA to 1000 mA) and high sensitivity mode (0.00 mA to 100.00

mA) and can measure an leak current. *1

For Io1, Ior1, Io2, and Ior2, each maximum values and date of occurrence are stored in the buffer memory as needed.

Even if the power source reset occurs, maximum values and date of occurrence are retained.

It can monitor the upper limit for Io1 ， Ior1 ， Io2, and Ior2.

In addition, you can set 2 steps of alarm values for each monitored element, and they can be used in such way to release cautious alarm and real alarm. When the value exceeds and continues to be over the monitoring value for alarm delay time, a specified input signal is turned on.

For each alarm monitored element, it counts the frequency of the alarms, which will be stored in the buffer memory as needed.

It can count up to 9999 times of Alarm occurrence count.

If the count exceeds 9999 times, Alarm occurrence count remains 9999 times.

Even if the power source reset occurs, the count of alarm occurrence is retained.

Section

4.2.1

Section

7.6.2

7.7.2

Section

4.2.2

Section

4.2.3

Section

4.2.4

5 Test

The intelligent function module switch enables pseudo-storage of the specified value into the buffer memory, even with non-existence of voltage and current

(sensor) input.

Using this module, you can create a sequence, etc.

Section

4.2.5

*1: High sensitivity mode can be used QE82LG whose serial number (upper six digits, shown on the front (at the bottom) of the module) is 150612 or later.

4 - 1

4 Functions

QE82LG

4.2 Functions in detail

4.2.1 Measuring functions

(1) Measured items

Measured items and measured ranges are described as follows:

Measured items

Details

CH1 leak current Present value (Un \ G1100)

CH1 leak current for resistance

Max. value (Un \ G1101)

Date/time of occurrence (Un \ G1102 to Un \ G1105)

Present value (Un \ G1150)

CH2 leak current





CH2 leak current for resistance





(2) Resolution of measured data

Resolution of measured data is described as follows:

- Leak current, leak current for resistance

Measured items Mode Resolution

Io1

Ior1

Io2

Ior2



Integer

Two decimal places

1 mA

0.01

ｍ A

Measuring range

0 mA to 1000 mA

0.00 mA to 100.00 mA

(3) Restrictions for measuring data

- Measurement cannot be performed immediately after the power loading to the sequencer system (while Module ready (Xn0) is under the OFF condition).

After checking that Module ready (Xn0) is ON, obtain measuring data.

- Measurement cannot be performed immediately after operating conditions are set up to this module. After checking that Operating condition setting completion flag (Xn9) becomes ON, obtain measuring data.

- Behaviors during operation are as follows:

Measured items

Io1

Ior1

Io2

Ior2

Behavior of this module

When the input current is less than 1 mA in low sensitivity mode or 0.01 mA in high sensitivity mode, it becomes 0 mA.

When the input current is less than 80 V, it becomes 0 mA.

In the case of abnormal frequency (when it is less than 44.5 Hz or over 66.5 Hz), it becomes 0 mA.

4 - 2

4 Functions

QE82LG

4.2.2 Max. values hold function

It memorizes the max. value for each measured element, and retains it until the max. value is cleared.

(1) Max. value memory

1) It memorizes the max. value for the following measured element.

- CH1 leak current

- CH1 leak current for resistance

- CH2 leak current

- CH2 leak current for resistance

2) It memorizes the date and time of occurrence (year/month/day/hour/minute/second/day of the week) together with the max. value.

3) The max. value and the date and time of occurrence are stored in the nonvolatile memory, so that these max. values can be retained even at a power source reset.

(2) How to clear the max. value

1) You can use the I/O signal to clear the max. value.

2) The max. value immediately after clearing will be the present value and the date of occurrence will be the present date and time.

3) The following data can be cleared upon CH1 max. value clear request (YnA). However, the following data cannot be cleared individually.

- Io1 max. value (Un \ G1101)

- Io1 date and time of occurrence (Un \ G1102 to Un \ G1105)

- Ior1 max. value (Un \ G1151)

- Ior1 date and time of occurrence (Un \ G1152 to Un \ G1105)

4) The following data can be cleared upon CH2 max. value clear request (YnC). However, the following data cannot be cleared individually.


- Io2 date and time and time of occurrence (Un \ G2102 to Un \ G2105)


- Ior2 date and time of occurrence (Un \ G2152 to Un \ G2105)

5) The following describes how to clear CH1 max. value. (CH2 max. value follows the same procedure using CH2 max. value clear request (YnC).)

(i) Check that CH1 max. value clear request (YnA) is OFF.

(ii) Set CH1 max. value clear request (YnA) to ON.

Max. values and dates and times of occurrence of CH1 leak current and CH1 leak current for resistance are cleared, and then CH1 max. value clear completion flag

(XnA) is turned ON.

(iii) Check that CH1 max. value clear completion flag (XnA) is ON, and then set CH1 max. value clear request (YnA) to OFF.

CH1 max. value clear request (YnA)

CH1 max. value clear completion flag (XnA)

Figure 4.2.2-1 Procedure for clearing max. value

4 - 3

4 Functions

QE82LG

4.2.3 Alarm monitoring function

For monitoring each measured item, you can set max. 2 points of upper limit alarm to perform monitoring. During the alarm monitoring, the module can monitor the input signal to check for the occurrence.

(1) Setting the alarm monitoring

1) Setting items and setting range for the alarm monitoring are described below.

Setting item Setting range Description

Alarm value

Alarm reset method

Alarm delay time


1 to 1000 (mA)

High sensirivity mode

0.01 to 100.00 (mA)

0: No monitoring

0: Self-retention

1: Auto reset

0 to 300 (seconds)

The value is for monitoring the target measured element.

Alarm is released when the present value exceeds alarm value and the situation continues for alarm delay time.

Also, in the case of 2-step monitoring, the 1-step and secondary alarm values can be configured regardless of their size.

You can set whether or not the alarm-occurrence condition should be retained if the value goes back to the alarm value after the alarm is released.

Alarm is released when the present value exceeds the alarm value and the situation continues for alarm delay time.

2) Setting procedures are as follows:

(i) Check that Operating condition setting request (Yn9) is OFF.

(ii) Set alarm value, alarm reset method, and alarm delay time. For the address of buffer memory corresponding to each measured element, refer to Chapter 6.

(iii) Set Operating condition setting request (Yn9) to ON. Operation starts at each set value, and then Operating condition setting completion flag (Xn9) is turned OFF.

(iv) Check that Operating condition setting completion flag (Xn9) becomes OFF, and then set Operating condition setting request (Yn9) to OFF.

Operating condition setting request (Yn9)

Operating condition setting completion flag (Xn9)

Figure 4.2.3-1 Time chart of alarm monitoring setting

3) Each item of the alarm monitoring is stored in the nonvolatile memory, so that set values can be retained even at a power source reset.

4 - 4

4 Functions

QE82LG

(2) Alarm flag (Xn1 to Xn8) and behavior of ALM1 LED and ALM2 LED

1) There are 4 statuses of alarm for each alarm monitoring element.

(a) Alarm non-occurrence status

The present value is under alarm value or the present value exceeds alarm value but the situation continues for less than alarm delay time.

(b) Alarm occurrence status

The present value exceeds alarm value and the situation exceeds alarm delay time.

(c) Self-retention status (Only when the alarm reset method is set to “self-retention”)

The present value has changed from the alarm occurrence status to be under alarm value.

(d) Alarm reset status

Alarm reset request (Yn1, Yn5) is released under the alarm occurrence status, and the present value is still over alarm value.

* In order to state the alarm, alarm monitoring must be less than the value once during the alarm reset state.

Alarm value

Io1 primary alarm flag (Xn1)

Request of CH1 alarm reset (Yn1)

Alarm mask time Alarm mask time

Alarm status

Alarm non-occurrence

Alarm occurrence

Self-retention

Alarm occurrence

Alarm reset

Alarm non-occurrence

Figure 4.2.3-2 Example of alarm status (alarm reset method = “self-retention”)

2) Relationship between the alarm status and Alarm flag (Xn1 to Xn8)

(a) Alarm non-occurrence status

Under the alarm non-occurrence status, Alarm flag (Xn1 to Xn8) is OFF.

(b) Alarm occurrence status

Under the alarm occurrence status, Alarm flag (Xn1 to Xn8) is ON.

(c) Self-retention status

Under the self-retention status, Alarm flag (Xn1 to Xn8) is ON.

(d) Alarm reset status

Under the alarm reset status, Alarm flag (Xn1 to Xn8) is OFF.

Alarm mask time

Alarm occurrence

4 - 5

4 Functions

3) Behaviors of ALM1 LED and ALM2 LED

(a) The indication of ALM1 LED changes according to status of CH1 Alarm.


Io1 secondary alarm flag (Xn2)

Ior1 primary alarm flag (Xn3)

Ior1 secondary alarm flag (Xn4)

(b) The indication of ALM2 LED changes according to status of CH2 Alarm.


Io2 secondary alarm flag (Xn6)

Ior2 primary alarm flag (Xn7)

Ior2 secondary alarm flag (Xn8)

QE82LG

(c) ALM1 LED and ALM2 LED display the following 3 indications according to the alarm status of the alarm occurrence flag.

- Flashing

Of the alarm occurrence flags, one or more flags are in the alarm occurrence status or in the alarm reset status (regardless of the status of the remaining alarm occurrence flags).

- ON

Of the alarm occurrence flags, one or more flags are in the self-retention status and the remaining flags of alarm occurrence are in the alarm non-occurrence status.

- OFF

Flags of alarm occurrence are all in the alarm non-occurrence status.

4 - 6

4 Functions

QE82LG

(3) Behavior of alarms

1) When the alarm reset method is in the “auto reset” setting (Example of Io1 primary alarm monitoring):

(a) If the present value Io1 exceeds alarm value and the situation continues for alarm delay time, Io1 primary alarm flag (Xn1) will be turned ON. At the same time, ALM1

LED flashes.

(b) If the present value goes below the upper limit, Io1 primary alarm flag (Xn1) will be turned OFF. At this time, ALM1 LED is turned off.

(c) Even if the present value Io1 exceeds alarm value, if the value goes under alarm value within alarm delay time, Io1 primary alarm flag (Xn1) will remain OFF.

Alarm value

Alarm mask time Alarm mask time


OFF Flashing OFF

Figure 4.2.3-3 Time chart of the secondary alarm (alarm reset method = “auto-reset”)

2) When alarm reset method is set to “self-retention” (Example of Io1 primary alarm monitoring)

(a) If the present value Io1 exceeds alarm value and the situation continues for alarm delay time, Io1 primary alarm flag (Xn1) will be turned ON. At the same time, ALM1

LED flashes.

(b) If the present value Io1 goes below the upper limit, Io1 primary alarm flag (Xn1) remains ON (self-retention). During the self-retention, ALM1 LED is turned on.

(c) By turning CH1 alarm reset request (Yn1) to ON, Io1 primary alarm flag (Xn1) will be turned OFF. At this time, ALM1 LED is turned off.

(d) Check that Io1 primary alarm flag (Xn1) becomes OFF, and then set CH1 alarm reset request (Yn1) to OFF.

Alarm value

Alarm mask time


CH1 alarm reset request (Yn1)

OFF Flashing ON OFF

Figure 4.2.3-4 Time chart of the secondary alarm (alarm reset method = “self-retention”)

4 - 7

4 Functions

QE82LG

3) An example of Io1 primary alarm monitoring is indicated in 1) and 2) above. Other alarm monitoring will be in accordance with the same behavior.

For the setting items for the buffer memory that corresponds to the alarm monitoring and the I/O signals, refer to Chapters 5 and 6.

(3) How to reset Alarm flag

1) If Alarm flag is ON during the alarm occurrence or the self-retention (in the case of the alarm reset method = “self-retention”), Alarm flag can be reset (turned OFF) using Alarm reset request.

2) CH1 alarm clear request (Yn1) will clear the following data. However, the following data cannot be cleared individually.

- Io1 primary alarm flag (Xn1)

- Io1 secondary alarm flag (Xn2)

- Ior1 primary alarm flag (Xn3)

- Ior1 secondary alarm flag (Xn4)

3) The following data can be cleared upon CH2 alarm reset request (Yn5). However, the following data cannot be cleared individually.





4 - 8

4 Functions

QE82LG

4) How to reset Alarm flag during alarm occurrence (Example of Io1 primary alarm monitoring)

(a) If the present value Io1 exceeds alarm value, Io1 primary alarm flag (Xn1) will be turned ON. At the same time, ALM1 LED flashes.

(b) By turning CH1 alarm reset request (Yn1) to ON, Io1 primary alarm flag (Xn1) will be turned OFF. At this time, ALM1 LED will remain flashing (because ALM1 LED is synchronized with the alarm status, it will not turn off).

(c) Check that Io1 primary alarm flag (Xn1) becomes OFF, and then set CH1 alarm reset request (Yn1) to OFF.

(d) If the present value Io1 goes under alarm value, ALM1 LED will be turned off.

(e) After that, if the present value Io1 exceeds alarm value, Io1 primary alarm flag (Xn1) will be turned ON again. At the same time, ALM1 LED flashes.

Alarm value lo1 primary alarm flag (Xn1)

CH1 alarm reset request (Yn1)

Alarm mask time

Alarm mask time

OFF Flashing OFF Flashing

Figure 4.2.3-5 Procedure for resetting Io1 primary alarm flag

(alarm reset method = “auto-reset”)

5) How to reset Alarm flag during self-retention (in the case the alarm reset method =

“self-retention” only)

Refer to the procedure described in (2) 2).

4 - 9

4 Functions

QE82LG

4.2.4 Alarm occurrence count function

It memorizes the count of alarm occurrence for each alarm monitoring element, and retains it until the count of alarm occurrence is performed.

(1) Memory of Alarm occurrence count

1) It memorizes each alarm occurrence count for the following element.

- Io1 primary alarm

- Io1 secondary alarm

- Ior1 primary alarm

- Ior1 secondary alarm

- Io2 primary alarm

- Io2 secondary alarm

- Ior2 primary alarm

- Ior2 secondary alarm

2) Alarm occurrence count is stored in the nonvolatile memory, so that it can be retained even at a power source reset.

(2) How to clear Alarm occurrence count

1) You can use I/O signal to clear the count of alarm occurrence.

2) The count of alarm occurrence immediately after the clear will be “0”.

3) The following data can be cleared upon CH1 alarm occurrence count clear request (YnB).

However, the following data cannot be cleared individually.

- Io1 primary alarm occurrence count (Un \ G1200)

- Io1 secondary alarm occurrence count (Un \ G1201)

- Ior1 primary alarm occurrence count (Un \ G1250)

- Ior1 secondary alarm occurrence count (Un \ G1251)

4) The following data can be cleared upon CH2 alarm occurrence count clear request (YnD).

However, the following data cannot be cleared individually.





5) The following describes how to clear CH1 alarm occurrence count. (CH2 alarm occurrence count follows the same procedure using CH2 alarm occurrence count clear request (YnD).)

(i) Check that CH1 alarm occurrence count clear request (YnB) is OFF.

(ii) Set CH1 alarm occurrence count clear request (YnB) to ON.

CH1 alarm occurrence count is cleared, and then CH1 alarm occurrence count clear completion flag (XnB) is turned ON.

(iii) Check that CH1 alarm occurrence count clear completion flag (XnB) is ON, and then set CH1 alarm occurrence count clear request (YnB) to OFF.

CH1 alarm occurrence count clear request (YnB)

CH1 alarm occurrence count clear completion flag (XnB)

Figure 4.2.3-6 Procedure for clearing Alarm occurrence count

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4 Functions

QE82LG

4.2.5 Test function

This function is to output pseudo-fixed value to a buffer memory for debugging sequence program. The value can be output to the buffer memory without input of voltage and current.

(1) How to use the test function

1) Using the intelligent function switch settings, you can start the test mode to output the fixed value.

2) For procedure for setting the intelligent function switch, refer to 7.5.2.

3) To finish the test mode, the set value is returned by the intelligent function switch setting, and after that, it starts a measuring mode (low sensitivity mode or high sensitivity mode) by resetting it.

(It resumes with the previous set value and accumulated electric energy as well as periodic electric energy.)

(2) Content of pseudo-output

For the value to be output to the buffer memory, refer to Tables 6.1-1 to 6.1-3 in 6.1 Buffer memory assignment.

(3) Percolations for using the test function

1) Because pseudo-fixed value is output to the buffer memory, isolate the actual device to avoid unexpected operation before running the sequence program.

4 - 11

5 I/O signal to CPU unit

QE82LG

Chapter 5: I/O signal to CPU module

5.1 List of I/O signals

I/O signals of QE82LG are listed in Table 5.1-1.

The “n” that is used in this and later chapters (for example: Xn0, Yn0, Un \ G0, etc.) refers to the number that appears at the beginning of QE82LG.

Table 5.1-1 List of I/O signals

Input signal (signal direction from QE82LG to CPU module)

Device # Signal name

Xn0 Module ready

Xn1

Xn2

Xn3

Xn4

Xn5

Xn6

Xn7

Xn8

Xn9

XnA

XnB

XnC

XnD

XnE

XnF

Io1 primary alarm flag

Io1 secondary alarm flag

Ior1 primary alarm flag

Ior1 secondary alarm flag





Operating condition setting completion flag

CH1 max. value clear completion flag

CH1 alarm occurrence count clear completion flag

CH2 max. value clear completion flag

CH2 alarm occurrence count clear completion flag

Use prohibited *1

Error flag

Output signal(signal direction from CPU module to

QE82LG)

Device # Signal name

Yn0 Use prohibited *1

Yn1

Yn2

Yn3

Yn4

Yn5

Yn6

Yn7

Yn8

CH1 alarm reset request

Use prohibited *1

Use prohibited *1

Use prohibited *1

CH2 alarm reset request

Use prohibited *1

Use prohibited *1

Use prohibited *1

Yn9

YnA

YnB

YnC

YnD

YnE

YnF

Operating condition setting request

CH1 max. value clear request

CH1 alarm occurrence count clear request

CH2 max. value clear request

CH2 alarm occurrence count clear request

Use prohibited *1

Error clear request

Point

*1 These signals cannot be used by the user since they are for system use only. If these are set to on or off by the sequence program, the performance of the QE82LG cannot be guaranteed.

5 - 1


QE82LG

5.2 Details of I/O signals

Detailed explanation about I/O signals of QE82LG is provided as follows:

5.2.1 Input signals

(1) Module ready (Xn0)

(a) When the power of CPU module is turned on or the CPU module reset is performed, it will turn ON as soon as the measurement is ready.

(b) Module ready is turned OFF when the insulation monitoring module displays a hardware error, and RUN LED is turned off.

(2) Io1 primary alarm flag (Xn1)

(a) When the present value Io1 exceeds Io1 primary alarm value (Un \ G1000) and the situation continues for Io1 primary alarm delay time (Un \ G1002), this signal (Xn1) turns

ON.

(b) Operations after this signal (Xn1) is turned ON will be different depending on the setting of

Io1 primary alarm reset method (Un \ G1001) below.

[When Io1 primary alarm reset method (Un \ G1001) is “self-retention”]

Even if the present value Io1 goes under Io1 primary alarm value (Un \ G1000), this signal

(Xn1) remains ON. Then, when CH1 alarm reset request (Yn1) is turned to ON, this signal

(Xn1) turns OFF.

[When Io1 primary alarm reset method (Un \ G1001) is “auto reset”]

If the present value Io1 goes under Io1 primary alarm value (Un \ G1000), this signal (Xn1) turns OFF.

(c) When Io1 primary alarm value (Un \ G1000) is set to “0 (not monitoring)”, this signal (Xn1) is always OFF.

*For the actual behavior of alarm monitoring, refer to 4.2.4.

(3) Io1 secondary alarm flag (Xn2)

The usage procedure is the same as Io1 primary alarm flag (Xn1). Refer to (2).

(4) Ior1 primary alarm flag (Xn3)


(5) Ior1 secondary alarm flag (Xn4)


5 – 2


(6) Io2 primary alarm flag (Xn5)


(7) Io2 secondary alarm flag (Xn6)


(8) Ior2 primary alarm flag (Xn7)


(9) Ior2 secondary alarm flag (Xn8)


(10) Operating condition setting completion flag (Xn9)

QE82LG

(a) When turning Operating condition setting request (Yn9) to ON and changing the following settings, this signal (Xn9) turns ON.

- Phase wire system (Un \ G0)

- Io1 primary alarm value (Un \ G1000)

- Io1 primary alarm reset method (Un \ G1001)

- Io1 primary alarm delay time (Un \ G1002)

- Io1 secondary alarm value (Un \ G1003)

- Io1 secondary alarm reset method (Un \ G1004)

- Io1 secondary alarm delay time (Un \ G1005)

- Ior1 primary alarm value (Un \ G1050)

- Ior1 primary alarm reset method (Un \ G1051)

- Ior1 primary alarm delay time (Un \ G1052)

- Ior1 secondary alarm value (Un \ G1053)

- Ior1 secondary alarm reset method (Un \ G1054)

- Ior1 secondary alarm delay time (Un \ G1055)













(b) When Operating condition setting request (Yn9) is OFF, this signal (Xn9) turns OFF.

5 – 3


QE82LG

(11) CH1 max. value clear completion flag (XnA)

(a) When CH1 max. value clear request (YnA) is turned ON and the following max. value data are cleared, this signal (XnA) turns ON.


- Io1 date/time of occurrence (Un \ G1102 to Un \ G1105)


- Ior1 date/time of occurrence (Un \ G1152 to Un \ G1155)

(b) When CH1 max. value clear request (YnA) is turned OFF, this signal (XnA) turns OFF.

(12) CH1 alarm occurrence count clear completion flag (XnB)

(a) When CH1 alarm occurrence count clear request (YnB) is turned ON and the following alarm occurrence count data are cleared, this signal (XnB) turns ON.





(b) When CH1 alarm occurrence count clear request (YnB) is turned OFF, this signal (XnB) turns OFF.

(13) CH2 max. value clear completion flag (XnC)

The usage procedure is the same as CH1 max. value clear completion flag (XnA). Refer to

(11).

(14) CH2 alarm occurrence count clear completion flag (XnD)

The usage procedure is the same as CH1 alarm occurrence count clear completion flag (XnB).

Refer to (12).

(15) Error flag (XnF)

(a) If an outside-set-value error occurs, and if a hardware error occurs, this signal (XnF) turns

ON.

(b) The description of the error occurred can be checked with latest error code (Un \ G3000).

*For description of error codes, refer to section 9.1.

(c) If an outside-set-value error occurs, this signal (XnF) is turned OFF by setting a value within the range again.

5 – 4


QE82LG

5.2.2 Output signals

(1) CH1 alarm reset request (Yn1)

(a) When resetting the following flags for alarm occurrence, this signal (Yn1) turns ON.





(b) When this signal (Yn1) is switched from the OFF status to the ON status, above alarm flag will forcibly be turned OFF regardless of alarm flag status.

(2) CH2 alarm reset request (Yn5)

(a) When resetting the following flags for alarm occurrence, this signal (Yn5) turns ON.





(b) When this signal (Yn5) is switched from the OFF status to the ON status, above alarm flag will forcibly be turned OFF regardless of alarm flag status.

(3) Operating condition setting request (Yn9)

(a) When switching this signal (Yn9) from the OFF status to the ON status, the following operating conditions will be set.


























5 – 5


QE82LG

(b) When the operating condition setting is completed, Operating condition setting completion flag (Xn9) turns ON.

(c) When this signal (Yn9) is turned OFF, Operating condition setting completion flag (Xn9) turns OFF.

(4) CH1 max. value clear request (YnA)

(a) When switching this signal (YnA) from the OFF status to the ON status, the following max. value date will be cleared.





(b) When clearing the max. data above is completed, CH1 max. value clear completion flag

(XnA) turns ON.

(c) When this signal (YnA) is turned OFF, CH1 max. value clear completion flag (XnA) is turned OFF.

(5) CH1 alarm occurrence count clear request (YnB)

(a) When switching this signal (YnB) from the OFF status to the ON status, the following max. value data will be cleared.





(b) When clearing the max. data above is completed, CH1 alarm occurrence count clear completion flag (XnB) turns ON.

(c) When this signal (YnB) is turned OFF, CH1 alarm occurrence count clear completion flag

(XnB) turns OFF.

(6) CH2 max. value clear request (YnC)

(a) When switching this signal (YnC) from the OFF status to the ON status, the following max. value data will be cleared.





(b) When clearing the max. data above is completed, CH2 max. value clear completion flag

(XnC) turns ON.

(c) When this signal (YnC) is turned OFF, CH2 max. value clear completion flag (XnC) turns

OFF.

5 – 6


QE82LG

(7) CH2 alarm occurrence count clear request (YnD)

(a) When switching this signal (YnD) from the OFF status to the ON status, the following max. value data will be cleared.





(b) When clearing the max. data above is completed, CH2 alarm occurrence count clear completion flag (XnD) turns ON.

(c) When this signal (YnD) is turned OFF, CH2 alarm occurrence count clear completion flag

(XnD) turns OFF.

(8) Error clear request (YnF)

(a) When switching this signal from the OFF status to the ON status while an outside-set-value error occurs, Error flag (XnF) will be turned OFF and latest error code

(Un \ G3000) will be cleared.

(b) At the same time as the clearing error above, the value set in the buffer memory below will be replaced with the previously set value.

[Values that are to be replaced with the previously set value]


























(c) While a hardware error is present (error code: 0000H to 0FFFH), it will not be cleared even if this signal (YnF) turns ON.

5 – 7

6 Buffer memory

Chapter 6: Buffer memory

6.1 Buffer memory assignment

QE82LG

The following describes buffer memory assignment.

Point

Do not write data into the prohibited area in the buffer memory from system area and sequence program. If data are written into these areas, it may cause malfunction.

(1) Configurable sections (Un \ G0 to Un \ G1100, Un \ G2000 to Un \ G2100)

Item

Configur- able section

Table 6.1-1 Configurable sections (Un \ G0 to Un \ G1100, Un \ G2000 to Un \ G2100)

Address

(decimal)

CH1 CH2

Data type *1

Description

Default value

R/W *2

Backup

*3

Value during the test mode *4

CH1 CH2

0 Pr Phase wire system 3 R/W ○ 3

1 to 99

100

1000 2000

1001 2001

1002 2002

1003 2003

1004 2004

1005 2005

-

Md

Pr

Pr

Pr

Pr

Pr

Pr

System area

Leak current, Leak current for resistance multiplying factor

(x 10 n ) primary alarm value

Leak current primary alarm reset method primary alarm delay time secondary alarm value secondary alarm reset method secondary alarm delay time

-

0

0

0

0

0

0

0

-

R

R/W

R/W

R/W

R/W

R/W

R/W

-

○

○

○

○

○

○

○

0

0

0

0

0

0

0

-2

0

0

0

0

0

0

1006 to

1049

2006 to

2049

- System area - - - - -

1050 2050

1051 2051

1052 2052

1053 2053

1054 2054

1055 2055

Pr

Pr

Pr

Pr

Pr

Pr

Leak current for resistance primary alarm value primary alarm reset method primary alarm delay time secondary alarm value secondary alarm reset method secondary alarm delay time

0

0

0

0

0

0

R/W

R/W

R/W

R/W

R/W

R/W

○

○

○

○

○

○

0

0

0

0

0

0

0

0

0

0

0

0

1056 to

1100

2056 to

2100

- System area - - - - -

*1: Pr indicates setting data, and Md indicates monitoring data.

*2: It indicates readable / writable status from the sequence program.

R: Readable

W: Writable

*3: Even if the power failure is restored, data is held because data is backed up by the nonvolatile memory.

*4: For the procedure for using the test mode, refer to section 4.2.5.

6 – 1

6 Buffer memory

QE82LG

(2) Measurable sections (Un \ G1100 to Un \ G1999, Un \ G2100 to Un \ G2999)

Item

Measurable section

Table 6.1-2 Measurable sections (Un \ G1100 to Un \ G1999, Un \ G2100 to Un \ G2999)

Address

(decimal)

Data type *1

Description

Default value

R/W *2

Backup

*3


CH1 CH2

1100 2100

1101 2101

Md Leak

Md current

Present value

Max. value

0

0

R

R

-

○

CH1

1001

1002

CH2

2001

2002

1102 2102

1103 2103

1104 2104

1105 2105

Md

Md

Md

Md

Year of time of max. value

Month and day of time of max. value

Hour and minute of time of max. value

Second and day of the week of time of max. value

0000h

0000h

0000h

0000h

R

R

R

R

○

○

○

○

2010h 2020h

0903h 1004h

0102h 0203h

0304h 0405h

1106 to

1149

2106 to

2149

1150 2150

1151 2151

1152 2152

1153 2153

1154 2154

1155 2155

-

Md Leak

Md current for resistance

Md

Md

Md

Md

System area

Present value

Max. value

Year of time of max. value

Month and day of time of max. value

Hour and minute of time of max. value

Second and day of the week of time of max. value

-

0

0

0000h

0000h

0000h

0000h

-

R

R

R

R

R

R

-

-

○

○

○

○

○

-

1011

1012

-

2011

2012

2011h 2021h

0102h 0203h

0304h 0405h

0506h 0600h

1156 to

1199

2156 to

2199

-

System area

- - - - -

1200 2200

1201 2201

Md

Md

Leak current primary alarm occurrence count secondary alarm occurrence count

0

0

R

R

○

○

1021

1022

2021

2022

1202 to

1249

2202 to

2249

-

System area

- - - - -

1250 2250

1251 2251

Md

Md

Leak current for resistance primary alarm occurrence count secondary alarm occurrence count

0

0

R

R

○

○

1031

1032

2031

2032

1252 to

1999

2252 to

2999

-

System area

- - - - -



R: Readable

W: Writable



6 – 2

6 Buffer memory

(3) Common sections (Un \ G3000 to Un \ G4999)

QE82LG

Item

Address

(decimal)

Table 6.1-3 Latest error sections (Un \ G3000 to Un \ G4999)

Data type *1

Description

Default value

R/W *2

Backup

*3


Common sections

3000

3001

3002

3003

3004

3005 to

3499

3500

3501 to

4999

Md

Md

Md

Md

Md

-

Md

-

Latest error code

Year of time of error

Month and day of time of error

0000h

0000h

0000h

Hour and minute of time of error 0000h

Month and day of time of error 0000h

System area

-

Measuring mode

System area

0000h

-



R: Readable

R

R

R

R

R

-

R

-

-

-

-

-

-

-

-

-

0001h

2019h

0910h

1112h

1301h

-

0001h

-

W: Writable



6 – 3

6 Buffer memory

6.2 Configurable sections (Un \ G0 to Un \ G1100, Un \ G2000 to Un \ G2100)

QE82LG

6.2.1 Phase wire system (Un \ G0)

Phase wire system for target electric circuits is configured.

It is common for both CH1 and CH2.

(1) Setting procedure

(a) Set the phase wire in the buffer memory. Setting range is as follows:

Setting value Description

1

2

3

Single-phase 2-wire

Single-phase 3-wire

Three-phase 3-wire

(b) Turn Operating condition setting request (Yn9) from OFF to ON to enable the setting. (Refer to

5.2.2(5).)

(2) Default value

It is set to 3 (Three-phase 3-wire).

6.2.2 Leak current, Leak current for resistance multiplying factor (Un \ G100)

Stores the measured value of multiplying factor for leak current and leak current for resistance.

(1) Details of stored data

(a) It depends on the measuring mode (low sensitivity mode and high sensitivity mode).

For the setting of Measuring mode, refer to section 7.6.2 or 7.7.2.

(2) Default value

It is set to 0. (Low sensitivity mode: 10 0 )

6.2.3 Io1 primary alarm value (Un \ G1000)

Set the monitoring level of CH1 leak current.

For the buffer memory address of other monitoring value, refer to section 6.1(1).


(a) Set the monitoring value in the buffer memory. Setting range is as follows:

Setting range Description

No monitoring 0

Low sensitivity mode: 1 to 1000 (mA)

High sensitivity mode: 1 to 10000 ( × -2 mA)

Monitors with the set value


5.2.2(5).)

(2) Default value

All monitoring values are set to 0 (no monitoring).

6 – 4

6 Buffer memory

6.2.4 Io1 primary alarm reset method (Un \ G1001)

QE82LG

Set alarm reset method of CH1 leak current.

For differences in behavior of alarm monitoring for different reset methods, refer to 4.2.4(2).

For the buffer memory address of other reset methods, refer to section 6.1(1).


(a) Set the reset method in the buffer memory. Setting range is as follows:

Setting value Description

0

1

Self-retention

Auto reset


5.2.2(5).)

(2) Default value

All reset methods are set to 0 (self-retention).

6.2.5 Io1 primary alarm delay time (Un \ G1002)

Set alarm delay time of CH1 leak current.

Alarm delay time means a grace period of time that starts from the moment when it exceeds the upper limit of monitoring value until the alarm occurrence flag is turned ON. For detailed behavior, refer to

4.2.4(2).

For the buffer memory address of other alarm delay time, refer to section 6.1(1).


(a) Set alarm delay time in the buffer memory.

- Configurable range: 0 to 300 (seconds)

- Set the value in seconds.

(b) Turn Operating condition setting request (Yn9) from OFF to O to enable the setting. (Refer to

5.2.2(5).)

(2) Default value

All alarm delay time is set to 0 (seconds).

6 – 5

6 Buffer memory

6.3 Measurable sections (Un \ G1100 to Un \ G1999, Un \ G2100 to Un \ G2999)

QE82LG

This product divides the measuring data into the Data and Multiplier, and output them to Buffer memory.

Actual measuring data is obtained by the following formula.

Measuring data = Data × 10 n (Multiplier is n).

(Example)

The values output to the Buffer memory are as follows when lo present value is measured 123.45mA.

Data (Un \ G1100): 12345

Multiplier (Un \ G100): -2 (High sensitive mode)

The actual measuring data is obtained from the value of Buffer memory as follows.

Measuring data = 12345 × 10 -2

= 123.45mA

6.3.1 Io1 present value (Un \ G1100)

Stores the measured value of CH1 leak current.

For the buffer memory address of CH2, refer to section 6.1(2).


(a) Storage format

Data are stored as 16-bit unsigned binary in the buffer memory.

- Data range: Low sensitivity mode: 0 to 9999 (mA), High sensitivity mode: 0 to 65535(x 10 -2 mA)

*Restrictions for measured data including resolution and measuring range, refer to section 4.2.1.

(b) Unit

It is decided by leak current, leak current for resistance multiplying factor. (Un¥G100)

Leak current, Leak current for resistance multiplying factor

（ Un¥G100 ）

Unit

-2

0

×10 -2 mA

×10 0 mA

(c) Data update cycle

It will be updated approximately every 2 seconds.

6 – 6

6 Buffer memory

QE82LG

6.3.2 Io1 max. value (Un¥G1101)

Stores the max. value of Io1 present value.



(a) Storage format


- Data range: Low sensitivity mode: 0 to 9999 (mA), High sensitivity mode: 0 to 65535(x 10 -2 mA)


(b) Data update cycle

It will be updated according to the update cycle of Io1 present value (Un \ G1100).

(2) How to clear the stored data

To clear all of CH1 max. values, perform the following operations.

- Change CH1 max. value clear request (YnA) from OFF to ON.

After stored data are cleared, the max. values that have been obtained since all data were cleared will be stored for every CH1 max. value.

*To clear CH2 max. values, follow the same procedure using CH2 max. value clear request (YnC).

6 – 7

6 Buffer memory

QE82LG

6.3.3 Year of time of Io1 max. value (Un \ G1102), Month and day of time of Io1 max. value (Un \ G1103),

Hour and minute of time of Io1 max. value (Un \ G1104),

Second and day of the week of time of Io1 max. value (Un \ G1105)

Stores the occurrence date/time such as year, month, day, hour, minute, second, and day of the week of

Io1 max. value (Un \ G1101).



(a) Storage format

As indicated below, data are stored as BCD code in the buffer memory.

Buffer memory address Storage format

Un \ G1102 b15 ～ b12 b11 ～ b8 b7

Year

～ b4 b3 ～ b0 e.g.) Year 2011

2011h

Un \ G1103 b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0

Month Day e.g.) Jan 21

0121h

Un \ G1104 b15

～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0

Hour Minute e.g.) 10:35

1035h b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0

Second 0 fixed e.g.) 48sec Friday

4805h

Un \ G1105

3

4

5

6

0

1

2

4

5

6

2

3

0

1 月

火

水

Thursday

木

Friday

金

土




To clear all of CH1 max. value occurrence dates, perform the following operations.


After stored data are cleared, the max. value occurrence dates that have been obtained since all data were cleared will be stored for every CH1 max. value occurrence date.


6 – 8

6 Buffer memory

QE82LG

6.3.4 Ior1 present value (Un \ G1150)

Stores the measured value of CH1 leak current for resistance.



(a) Storage format


- Data range: Low sensitivity mode: 0 to 9999 (mA), High sensitivity mode; 0 to 65535 (x10 -2 mA)



It will be updated approximately every 10 seconds.

6.3.5 Ior1 max. value (Un \ G1151)

Stores the max. value of Ior1 present value.



(a) Storage format


- Data range: Low sensitivity mode: 0 to 9999 (mA), High sensitivity mode; 0 to 65535 (x10 -2 mA)



It will be updated according to the update cycle of Ior1 present value (Un \ G1150).


To clear all of CH1 max. values, perform the following operations.


After stored data are cleared, the max. values that have been obtained since all data were cleared will be stored for every CH1 max. value.


6 – 9

6 Buffer memory

QE82LG

6.3.6 Year of time of Ior1 max. value (Un \ G1152), Month and day of time of Ior1 max. value (Un \ G1153),

Hour and minute of time of Ior1 max. value (Un \ G1154),

Second and day of the week of time of Ior1 max. value (Un \ G1155)

Stores the occurrence date/time such as year, month, day, hour, minute, second, and day of the week of

Ior1 max. value (Un \ G1151).



(a) Storage format



Un \ G1152 b15 ～ b12 b11 ～ b8 b7

Year

～ b4 b3 ～ b0 e.g.) Year 2011

2011h

Un \ G1153 b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0 e.g.) Jan 21

0121h b15

～

Mont h b12 b11 ～ b8 b7

Day

～ b4 b3 ～ b0

Un \ G1154 e.g.) 10:35

1035h

Hour Minute

Un \ G1155 b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0

Sec ond

0 fixed

0

1

0

2

1

3

2

4 3

5 4

6 5

6 e.g.) 48sec Friday

4805h

土


It will be updated according to the update cycle of Ior1 present value (Un \ G1150).


To clear all of CH1 max. value occurrence dates, perform the following operations.


After stored data are cleared, the max. value occurrence dates that have been obtained since all data were cleared will be stored for every CH1 max. value occurrence date.


6 – 10

6 Buffer memory

QE82LG

6.3.7 Io1 primary alarm occurrence count (Un \ G1200)

Stores the count of alarms that occurred with Io1 primary alarm (how many times Io1 primary alarm flag

(Xn1) has been turned ON).

For the buffer memory address of other alarm occurrence count, refer to section 6.1(2).


(a) Storage format

Data are stored as 16-bit signed binary in the buffer memory.

- Data range: 0 to 9999 (times)




To clear all of CH1 alarm occurrence count, perform the following operations.

- Change CH1 alarm occurrence count clear request (YnB) from OFF to ON.

After stored data are cleared, “0” will be stored for all CH1 alarm occurrence counts.

*To clear CH2 alarm occurrence count, follow the same procedure using CH2 alarm occurrence count clear request (YnD).

6 – 11

6 Buffer memory

6.4 Common sections (Un \ G3000 to Un \ G4999)

6.4.1 Latest error code (Un \ G3000)

*For the list of error codes, refer to section 9.1.


(a) Storage format


- Data range: 0000h (normal), 0001h to FFFFh (error code)


It will be updated at the time of error occurrence and error recovery.

QE82LG

6 – 12

6 Buffer memory

QE82LG

6.4.2 Year of time of error (Un \ G3001), Month and day of time of error (Un \ G3002),

Hour and minute of time of error (Un \ G3003),

Second and day of the week of time of error (Un \ G3004)

Stores the occurrence date/time such as year, month, day, hour, minute, second, and day of the week of the error.


(a) Storage format



Un \ G3001 b15 ～ b12 b11 ～ b8 b7

Year

～ b4 b3 ～ b0 e.g.) Year 2011

2011h

Un \ G3002 b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0 e.g.) Jan 21

0121h

Un

Un \

\ G3003

G3004

Month Day b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0 e.g.) 10:35

1035h

Hour Minute b15 ～ b12 b11 ～ b8 b7 ～ b4 b3 ～ b0

Second 0 fixed

0

1

2

3

4

5

6 5

6

3

4

0

1

2 e.g.) 48 sec Friday

4805h

土


It will be updated at the time of error occurrence and error recovery.

6.4.3 Measuring mode (Un \ G3500)

The setting content for measuring mode can be checked.

For the setting of Measuring mode, refer to section 7.6.2 or 7.7.2.

Measuring mode



Measuring mode(Un¥G3500)

0

1

6 – 13

7 Setting and procedure for operation

Chapter 7: Setting and procedure for operation

7.1 Precautions for handling

QE82LG

(1) Do not drop the case of this module or give a strong impact.

(2) Do not remove the printed circuit board of the module from the case.

It may cause failure.

(3) Prevent the inside of the module from any foreign objects such as chips and wire pieces.

It may cause fire, failure or malfunction.

(4) In order to prevent the module from incoming foreign objects such as wire pieces during wiring work, a foreign-object preventive label is placed on the module.

While a wiring work is performed, keep the label on the module.

Before operating the system, peel off the label for heat release.

(5) Module fixing screws must be tightened within the specified range as described below.

Loose screws may cause short-circuit, failure, or malfunction.

*1 The module can be fixed easily to the base unit, using the hook on top of the module. However, if it is used under a vibrating environment, we strongly recommend that the module be fixed with screws.

Table 7.1-1 Tightening torque

Locations of screws

Module-fixing screws (M3 screw) *1

Torque range

0.36 N•m to 0.48 N•m

(6) To attach the module to the base unit, firmly insert the protruding portions for fixing the module into the holes on the base unit, and make sure the module is securely attached to the module holes as fulcrum points.

Insecure attachment of the module may case malfunction, failure, and a falling.

(7) Before touching the module, make sure that you need to discharge static electricity on your body by touching a metal that is grounded.

Otherwise, it may cause failure or malfunction to the module.

7 - 1


7.2 Procedure for operation

Start

Attaching the module

Attach QE82LG to the specified base unit.

(Refer to 7.4.)

Wiring

Wire QE82LG for external device. (Refer to 7.5.)

Setting the intelligent function of module switch

Initial setting

Perform settings using GX Works2. (Refer to 7.6.)

Perform settings using GX Developer. (Refer to 7.7.)

Programming, debugging,

Create and check the sequence program.

Figure 7.2-1 Procedure for operation

QE82LG

7 - 2


7.3 Name and function of each part

Names and functions of parts of QE82LG are provided below.

(3) Push button

Use this button to insert a cable to the terminal or to remove them.

(4) Check hole

Use this for continuity check to the terminal.

Use it with a tester contact.

(1)LED

Operation status of this module is displayed.

(Refer to 7-4.)

QE82LG

(2) Input terminals

Voltage wire and leak current wire of the measuring circuit

(dedicated ZCT secondary output) are connected.

Figure 7.3-1 Appearance of the module

(5) Strip gauge

A gauge that is used for checking the length of stripped wire.

7 - 3


(1) Names and functions of LEDs

The following describes names and functions of LEDs.

QE82LG

Name Color

RUN LED Green

Table 7.3-1 Names and functions of LEDs

Role ON/OFF condition

Displays the operation status of this module.

ON:

OFF:

Normal operation

5V power discontinuity, watch dog timer error

ERR. LED Red

Displays errors and conditions of this module.

ON: Hardware error *1

Flashing: Out-of-range error *1

OFF: Normal operation

ALM1 LED Red

Displays alarm occurrence status of CH1.

Refer to 4.2.3 (2) 3).

ALM2 LED Red

Displays alarm occurrence status of CH2.

Refer to 4.2.3 (2) 3).

Note: During the test (debug), all LEDs will be turned ON.

*1 For details, check with the list of error codes. (Refer to section 9.1.)

(2) Names of signals of terminal block

The following describes names of signals of terminal block.

Name of terminal

Table 7.3-2 Names of signals of terminal block

Description

CH1 Z+, Z Leak current input terminal (CH1)

CH1 Z+, Z

P1

P2

P3

FG

Leak current input terminal (CH2)

1-phase voltage input terminal



Frame GND terminal

7 - 4


7.4 Attaching and removing the module

7.4.1 How to attach to the base unit

Insert it securely so that the protruding portion for fixing the module *1 does not come off of the module-fixing hole.

Base unit

Hook for fixing the module (*2)

Push the module toward the arrow direction, as the module-fixing hole being a fulcrum point, until you hear a click sound to firmly attach it to the base unit.

Check that the module is firmly inserted to the base unit.

Module connector

Base unit

Protrusion for fixing the module (*1)

Lever for attaching the module

Module

Base unit

Lever for attaching the module

Protrusion for fixing the module

Hole for fixing the module

QE82LG


Complete

Caution

 Attach to the base of MELSEC-Q series.

 When attaching the module, make sure to insert the protruding portions for fixing the module into the holes on the base unit. In doing so, insert it securely so that the protruding portion of the module does not come off of the holes. Do not force to attach the module; otherwise the module may break.

 When installing the module at a vibrating area with strong impact, tighten the module to the base unit using screws. Module-fixing screws: M3 x 12 (Prepare them yourself.)

Locations of screws

Module-fixing screws (M3 screw) *1

Torque range

0.36 N•m to 0.48 N•m

 Attaching and detaching the module and the base unit should be performed 50 times or less

(to conform to JIS B3502). If the count exceeds 50 times, it may cause a malfunction.

7 - 5


7.4.2 How to detach the base unit

Hold the module with both hand, and push the hook for fixing the module *1 located on top of the module until it stops.

Push

While pushing the hook for fixing the module *1 , pull the module straight toward yourself using the lower part of the module as a fulcrum point.

As lifting the module upward, release the protruding portion for fixing the module *2 from the hole.

Hook for fixing the module (*1)

Module connector

Module

Base unit


Lift it up

Complete

QE82LG

 When module-fixing screws are used, make sure to remove the screws for detaching the module first, and then remove the protruding portion for fixing the module from the holes. Do no force to remove the module; it may break the protruding portions for fixing the module.

7 - 6


7.5 Connecting wires, wiring

QE82LG

7.5.1 Precautions for wiring

(1) Connect cables. For connecting voltage transformer and ZCT, refer to the wiring diagram.

(2) For wiring, check with the wiring diagram and check the phase wire system for the connecting circuit.

(3) For the leak current input, Mitsubishi's ZCT is required. (Refer to section 7.5.3.)

(4) If a current sensor is located in a strong magnetic field such area nearby a transformer or high-current cable bus bar, the voltage circuit input may be influenced, which in turn affects the measured value. Thus, please ensure sufficient distance between devices.

(5) For wiring voltage circuit and ZCT secondary, use separate cables from other external signals in order to prevent from AC surge and induction.

(6) Keep any object off the cables.

(7) Protect cable coating from scratch.

(8) Cable length should be routed in length with a margin, please take care to avoid causing stress to pull the terminal block. (Tensile load: less than 22 N)

(9) Please do not connect two or more cables to one terminal hole of the current input terminal block. The engagement of the terminal becomes weak, and cable may fall out.

(10)For the actual usage, connect the FG terminal to ground. (D-type ground: Type 3)

Connect it directly to the ground terminal.

7 - 7


QE82LG

7.5.2 How to connect wires

(1) Follow the wiring diagram for external connection to QE82LG.

(2) Use appropriate electric wires as described below.

Appropriate wires for voltage input circuit (acceptable electric wires)

Voltage input terminal

P1, P2, P3, FG

Single wire: AWG24 to AWG17

(φ0.5 mm to 1.2 mm)

Stranded wire: AWG20 to AWG16

(0.5 mm 2 to 1.3 mm 2 )

Appropriate wires for leak current input (acceptable electric wires)

Leak current input terminal

Z+, Z

Single wire: AWG24 to AWG17

(φ0.5 mm to 1.2 mm)

Stranded wire: AWG20 to AWG16

(0.5 mm 2 to 1.3 mm 2 )

(3) Stripping length of the wire in use has to be 10 to 11 mm. Check the stripping length using the strip gauge of this module.

Stripping length of the wire

10 mm to 11 mm

(4) When using stranded wire, make sure to use a bar terminal or treat the wire edge by stripping in order to keep thin lines from loosening.

Recommended bar terminal TGV TC-1.25-11T (Made by Nichifu) or equivalent

* Stranded wire

(5) When attaching and detaching cables to/from the terminal, use the push button. Check that the wire is securely inserted.

(6) Insert a wire to the terminal all the way until it touches the end.

7 - 8


QE82LG

7.5.3 Connection diagram

For external connection to QE82LG, follow the phase method and the connection diagram.

Power source side

1

2

3

Load side

Z+

Z

Z+

Z

P1

P2

P3

FG

Zero-phase current

零相変流器

(ZCT)

Power 1(1) source 2(0) side

3(2)

Figure 7.5.3-1 In the case of Three-phase 3-wire

Load side

P1

P2

P3

FG

Z+

Z

Z+

Z

Zero-phase current

(ZCT)

(ZCT)

Figure 7.5.3-2 In the case of Single-phase 3-wire

7 - 9


Power source side

Load side

QE82LG

Zero-phase current transformer

(ZCT)

Power source side

1

2

3

Load 1 Load 2


Load side

C

1

Z+

Z

Z+

Z

P1

P2

P3

FG

Zero-phase current

零相変流器

(ZCT)

(ZCT)


(with the voltage transformer for gauge/current transformer)

7 - 10


Transformer

1 2 3


(ZCT)

QE82LG

Load side

Figure 7.5.3-5 Measuring with the transformer secondary side ground line

- ZCT (CZ, ZT series) do not have a secondary output polarity.

- ZCT( CZ, ZT series) are dedicated for low voltage circuits. It cannot be used for high voltage circuits. Connecting to a high voltage circuit by mistake can cause burning of equipment and fire, which is extremely dangerous.

- In the absence of voltage input, correct measurement cannot be performed, so be sure to connect the voltage input terminal.

- Two circuits can be measured by one module at same line and same phase wire system.

(ex. It cannot be measured when CH1: three-phase 3-wire, CH2: single-phase 3-wire)

- Measuring of the leakage current for resistance can be measured with single-phase 2-wire, single-phase 3-wire, three-phase 3-wire delta circuit.

- Measuring of the leakage current (Io) can be measured with three-phase 3-wire star circuit and special grounding circuit such as high resistance grounding circuit and capacitor grounding circuit..

7 - 11


QE82LG

7.5.3.1 Connection to leak current circuit (Z+, Z terminal)

For wiring the leak current circuit, use Mitsubishi’s zero-phase current transformer (ZCT).

*Using other company’s zero-phase current transformer (ZCT) is not allowed.

(1) Combination of zero-phase current transformers (ZCT)

For ZCT combination, use Mitsubishi’s device as described below.

Mitsubishi ZCT

Split-type ZCT CZ-22S, CZ-30S, CZ-55S, CZ-77S, CZ-112S

Through-type

ZCT

ZT15B, ZT30B, ZT40B, ZT60B, ZT80B, ZT100B

ZCT with primary conductor

ZTA600A, ZTA1200A, ZTA2000A

(2) Length of wire between ZCT and this module is max. 50 m (when used with the appropriate cable in section 7.5.2).

(3) ZCT output wire from Z+ and Z terminal has to be stranded at 40 times/m.

Supplemental: ZCT connection

(1) Precautions for passing a conductor through the ZCT

1. In the case of the

Single-phase 3-wire type, make sure to pass all three wires, including a neutral wire, through ZCT.

Neutral conductor to ZCT

2. If a ground line is connected to the cable run, do not let it go through the ZCT. (If load current flow is not intended, do not use the wire for passing through ZCT. )

Do not pass a dedicated ground line through the module.

3. If an accident such as short circuit occurs, and large current that exceeds the rating flows through the wire, it may cause mechanical stress to the

ZCT. Thus, tie the wires together using a tightening band, etc.

4. Do not bend the passing wire near ZCT. If you use a primary conductor over 300 A, keep one side of the wire at 30 cm or longer.

5. Do not use a ZCT lead wire for ground.

30 cm or longer

7 - 12


QE82LG

(2) Zero phase current transformer (CZ, ZT series) is affected by the external magnetic field generated by current when ZCT is installed in the vicinity of the trunk line where large current flows as a result, an error occurs in the measured value. Please install the distance as shown in the below table with the trunk line.

Split type zero-phase current transformer

Current

CZ-22S CZ-30S CZ-55S CZ-77S CZ － 112 Ｓ

100A 100 mm 100 mm

300A

500A

150 mm

150 mm 250 mm

700A

1000A 250 mm

2000A 250 mm 450 mm 450 mm

100 mm 100 mm

Through type zero-phase current transformer

ZT15B ZT30B ZT40B ZT60B ZT80B ZT100B

Current

100A

300A

500A

700A

1000A

2000A

100 mm

7 - 13


7.5.3.2 Voltage circuit connection

(1) When 220 V or higher is loaded to the voltage circuit, use a transformer for gauge.

QE82LG

(2) For connection to P1 to P3 terminals on QE82LG, connect the specified voltage according to the phase wire system. Make sure that terminal symbols are correct. If phase wires are connected incorrectly, accurate measurement cannot be performed.

(3) In order to perform maintenance work such as changing the wire layout and replacing equipment, we recommend that you connect protective device (breaker) for the voltage input circuit (P1, P2, and P3 terminals).

Breaker

P2

P1

P3

7.5.3.3 FG terminal connection

 For the actual usage, connect the FG terminal to ground. (D-type ground: Type 3)

 Do not connect to FG terminal during the insulation resistance test and pressure test.

7 - 14


QE82LG

7.6 Setting from GX Works2

This section explains setting from GX Works2 necessary to use QE82LG. Before performing this setting, install GX Works2 and connect the Management CPU with the PC using a USB cable. For details, refer to the manual of CPU module.

Point

To addition the unit, enable the switch setting, parameter setting and auto refresh, write the settings to the CPU module, and reset the CPU module or power on the programmable controller again.

7.6.1 Addition the unit

Add the model name of the energy measuring module to use the project.

(1) Addition procedure

Open the “New Module” window.

Project window→[intelligent Function Module]→Right-click→[New Module…]

Title Setting Title

Description

Set [Energy Measuring module].

Set the name of the module to mount.

Set the base No. where the module is mounted.

Set the slot No. where the module is mounted.

Figure 7.6.1-1 Dialog box of “I/O assignment”

Table 7.6.1-1 Setting items on the “I/O assignment” tab

Item

Module Selection Module Type

Mount Position

Module Name

Base No.

Mounted Slot

No.

Specify start XY address

The start I/O number (hexadecimal) of the target module is set, according to the mounted slot No. Any start I/O number can be set.

Set any title.

7 - 15


QE82LG

7.6.2 Setting the intelligent function of the module switch

Set the operation mode.

(1)Setting procedure

Open the “Switch Setting” window.

Project window→[intelligent Function Module]→Module name→[Switch Setting]

Item

Operation mode

Figure 7.6.2-1 Dialog box to set the intelligent function of the module switch

Table 7.6.2-1 Setting the intelligent function of the module switch

Description Setting value

Measurement Mode and test mode are changed.

Measuring mode (default)

Test mode

Measuring mode When set measuring mode above setting, set the kind of measuring mode.

When set test mode above setting, this setting disable.

Regular operating mode(default)

Current measuring mode

7 - 16


7.6.3 Parameter Setting

Set the parameters.

Setting parameters on the screen omits the parameter setting in a program.


Open the “Parameter” window.

Project window→[intelligent Function Module]→Module name→[Parameter]

QE82LG

Figure 7.6.3-1 Dialog box to monitor all buffer memories (a case where the module is attached to the slot 0)

(2)Double-click the item to change the setting, and input the setting value.

 Items to input from the pull-down list

Double-click the item to set to display the pull-down list. Select the item.

 Items to input from the text box

Double-click the item to set, and input the setting value.

(3) Setup of CH2 to CH4 is performed by operation of Procedure (2).

7 - 17


Item

Common setting

Leak current (Io) Primary alarm monitoring function


(Ior) Primary alarm monitoring function


(Ior) Secondary alarm monitoring function

Phase wire system

Primary alarm value

Primary alarm reset method

Primary alarm delay time

Secondary alarm value

Leak current (Io) Secondary alarm monitoring function

Secondary alarm reset method

Secondary alarm delay time

Primary alarm value

Primary alarm reset method

Primary alarm delay time

Secondary alarm value

Secondary alarm reset method

Secondary alarm delay time

QE82LG

Setting value

1:Single-phase 2-wire

2:Single-phase 3-wire

3:Three-phase 3-wire

0 ： No monitoring

【 Low sensitivity mode 】

1 mA to 1000 mA ： Monitors with the set value

【 High sensitivity mode 】

1 to 10000 （ ×10 -2 ） mA ： Monitors with the set value

0:Self-retention

1:Auto reset

0 to 300 seconds

0 ： No monitoring





0:Self-retention

1:Auto reset

0 to 300 seconds

0 ： No monitoring





0:Self-retention

1:Auto reset

0 to 300 seconds

0 ： No monitoring





0:Self-retention

1:Auto reset

0 to 300 seconds

Reference

Section 6.2.1

Section 6.2.3

Section 6.2.4

Section 6.2.5

Section 6.2.3

Section 6.2.4

Section 6.2.5

Section 6.2.3

Section 6.2.4

Section 6.2.5

Section 6.2.3

Section 6.2.4

Section 6.2.5

7 - 18


QE82LG

7.6.4 Auto Refresh

This function transfers data in the buffer memory to specified devices.

Programming of reading/writing data is unnecessary.


1) Start “Auto Refresh” .

Project window→[intelligent Function Module]→Module name→[Auto Refresh]

2) Start “Auto Refresh” .

Click the item to set, and input the destination device for auto refresh.

Point

Available devices are X, Y, M, L, B, T, C, ST, D, W, R, and ZR.

When a bit device X, Y, M, L, or B is used, set a number that is divisible by 16 points (example: X10, Y120, M16).

Data in the buffer memory are stored in 16 points of devices starting from the set device No. (Example: When X10 is set, the data are stored in X10 to X1F).

7 - 19


QE82LG

7.6.5 Debugging program

QE81WH provides a test function so that you can debug a program with no input of voltage or current. Pseudo-value can be stored into the buffer memory. For detailed explanation for the test function, refer to 4.2.5.

Caution

Test function stores pseudo-values for setting value and error information as well as measured value. If you use these data to control the sequence program that controls external devices, there is a chance that erroneous control may occur. For safety of external devices, use this function after disconnecting the device.

(1) Setting intelligent function of the module switch

1) Configure the operation mode in switch setting as shown below. (Refer to 7.6.2)

Test mode transition : Test mode

2) From the “Online” menu, select “Write to PLC” to display the dialog box of Write to PLC, and then execute the writing to PLC parameter. After resetting the CPU module, the value will become effective.

(2) Starting the test function

1) Reset the CPU module.

2) QE84WH starts in the test function mode. All LEDs are turned on. Pseudo-values are stored in the buffer memory.

(3) Finishing the test function (Move back to the measuring mode)

1) Following 1) in step (1), Configure the operation mode in switch setting as shown below.

Test mode transition : Test mode

2) Following 2) in step (1), write the data into PLC.

3) Reset the CPU module, then the operation goes back to the measuring mode.

7 - 20


QE82LG

7.7 Setting from GX Developer

This section explains setting from GX Developer necessary to use QE82LG. Before performing this setting, install the GX Developer and connect the Management CPU with the PC using a USB cable. For details, refer to the manual of CPU module.

7.7.1 I/O assignment setting

(1) Double-click the dialog box of “PLC Parameter in the GX Developer Project.

(2) Click “I/O assignment”.

(3) Set the following item to the slot*1 to which QE82LG has been attached.

Figure 7.7.1-1 Dialog box of “I/O assignment”

Table 7.7.1-1 Setting items on the “I/O assignment” tab

Item Descriptions

Type

Model name

Points

Start XY

Select “Intelli.”.

Enter the model name of the module.

Select 16 points.

Enter the initial I/O number of QE82LG.

*1 is a case where QE82LG is attached to the slot 0.

7 - 21


QE82LG

7.7.2 Setting the intelligent function of the module switch

(1) In the “I/O assignment setting” of 7.7.1, click the Switch setting button to display the dialog box of “I/O module, intelligent function module switch setting”.

(2) The intelligent function module switch setting displays switches 1 to 5; however, only the switch 5 is used for this purpose. Switch setting is configured using 16-bit data.

Settings are as shown in Table 7.7.2-1.

Select “DEC.”.


Table 7.7.2-1 Setting the intelligent function of the module switch

Switch

No.

Switch name

1 Not used

2 Not used

3 Not used

4 Measuring mode

5 Operating mode

*1

-

-

-

Description

0: Low sensitivity mode

1: High sensitivity mode

0: Measuring mode (Even if it is not set, measuring mode is performed.)

1: Test mode *2

*1: When Operating mode (Switch No.5) is set to Test mode(1), the setting of Measuring mode is ignored.

*2: For details of the test mode, refer to 4.2.5.

(3) When the setting is completed, click the Complete setting button.

(4) From the “Online” menu, select “Write to PLC” to display the dialog box of Write to PLC, and then execute the writing to PLC parameter. After resetting the CPU module, the value will become effective.

7 - 22


QE82LG

7.7.3 Initial setting

This section explains the setting of the operating condition for phase wire systems that are required for measurement. Once each value is set, these values will be stored in the nonvolatile memory of this module, so that reconfiguration is not needed. You can also perform the setting using sequence program. In this case, you need to create a program, as referring to Chapter 8.

Follow the procedure below for each setting.

(1) Check the current setting

(2) Set the buffer memory

(1) Check the current setting

1) From the “Online” menu, select “Monitor” – “Buffer memory all”. The dialog box to monitor all buffer memories is displayed. After setting the address as shown below, click the

Start monitoring button to check the current buffer memory status.

Module initial address: Set the initial address of this module.

Buffer memory address: 0

(Display: 16-bit integer, numerical value: check the number in decimal)

2) Check each item. The following shows items for operating condition settings. For specific setting value, see the provided references.

Table 7.7.3-1 List of setting items

Buffer memory address

Item Reference

Un \ G0

Phase wire Section 6.2.1

Figure 7.7.3-1 Dialog box to monitor all buffer memories (a case where the module is attached to the slot 0)

7 - 23


QE82LG

(2) Set the buffer memory

1) In the dialog box to monitor all buffer memories, click the Device test button to display the

Device test dialog box.

2) In the Word device / buffer memory, specify the module initial address and buffer address, and click the Set button to apply the setting.

4), 6) →

2) →

Figure 7.7.3-2 Device test dialog box (a case where the module is attached to the slot 0)

3) Change the setting in 2).

4) In the section of bit device setting in the device test dialog box, select “Y9”* and click the

Force ON button.

5) When the setting is completed without any problem, the Device “X9”* changes to ON.

Check this using the procedure as follows:

(a) From the “Online” menu, select “Monitor” – “Device all”. The dialog box to monitor all devices is displayed.

(b) Set “X0”* to the device, and click “Start monitoring”

(c) Check that Device “X9“* is in the ON status.

Figure 7.7.3-3 Checking the device “X9”* in the dialog box to monitor all devices

6) After checking that the device "X9"* is in the ON status, select “Device: “Y9”* in the dialog box of device test, and then click the Force OFF button. Setting is completed.

7) If the Device “X9”* is not in the ON status, this means an error because the set value is out of range (ERR.LED is flashing). Modify the setting, and change the device “Y9” to the

OFF status, then change it back to the ON status.

* Indicates a number in the case where the initial I/O number (initial XY) is set to 0.

7 - 24


QE82LG

7.7.4 Debugging program (optional)

QE82LG provides a test function so that you can debug a program with no input of voltage or current. Pseudo-value can be stored into the buffer memory. For detailed explanation for the test function, refer to 4.2.5.

Caution

Test function stores pseudo-values for setting value and error information as well as measured value. If you use these data to control the sequence program that controls external devices, there is a chance that erroneous control may occur. For safety of external devices, use this function after disconnecting the device.

(1) Setting intelligent function of the module switch

1) In the “I/O assignment setting” of 7.7.1, click the Switch setting button to display the dialog box of “I/O module, intelligent function module switch setting”. (Refer to 7.7.2)

2) The intelligent function module switch setting displays switches 1 to 5; however, only the switch 5 is used for this purpose. Switch setting is configured using 16-bit data.

Setting is as follows:

Switch 5: “1” (set in decimal)

Enter “1”.


3) When the setting is completed, click the Complete setting button.

4) From the “Online” menu, select “Write to PLC” to display the dialog box of Write to PLC, and then execute the writing to PLC parameter.

5) After resetting the CPU module, the value will become effective.

(2) Starting the test function

1) Reset the CPU module.

2) QE82LG starts in the test function mode. All LEDs are turned on. Pseudo-values are set effective in the buffer memory.

(3) Finishing the test function (Move back to the measuring mode)

1) Following 1) and 2) in step (1), configure the intelligent function switch setting as shown below.

Switch 5: “0” (set in decimal)

Switch 4: “0” or “1” (Low or high sensitivity mode )

2) Following 3) and 4) in step (1), complete the setting and write the data into PLC.

3) Reset the CPU module, then the operation goes back to the measuring mode (Low or high sensitivity mode).

7 - 25

8 Programming

QE82LG

Chapter 8: Programming

This chapter explains programming for QE82LG.

When you apply sample programs introduced in this chapter into the actual system, make sure to verify in advance that there is no problem with the target system control.

Follow the procedure in Figure 8.1-1 to create a sample program using QE82LG.

The default setting allows you to use either GX Works2 (refer to 7.6), GX Developer (refer to 7.7) or the sequence program to make settings; however, if the setting is made for the first time by using GX

Works2 or GX Developer, the program for initial setting can be eliminated, which will reduce time for scanning.

8.1 Programming procedure

Follow the procedure in Figure 8.1-1 to create a program for acquiring the measured data, alarm monitoring using QE82LG.

Start

Do you make the initial setting manually on the GX Works2 or

GX Developer?

No

Measured data acquisition program

(Acquiring CH1 leak current and CH1 leak current for resistance)

Alarm monitoring function program

(Acquiring the alarm status and output in case of alarm occurrence)

Creating a program for the function to be used

Error monitoring program

(Monitoring the error status and output in case of error occurrence)

Finish

Yes

Initial setting program

(Setting the phrase wire system, alarm value, alarm reset method, and alarm delay time)

Creating a program for the function as needed

Figure 8.1-1 Programming chart

8 - 1

8 Programming

8.2 System configuration and usage conditions for sample program

A sample program is shown below based on the following system and the usage condition.

(1) System configuration

QCPU

QY40 (Y10 to Y1F)

QE82LG (X/Y0 to X/YF)

Figure 8.2-1 Sample system configuration using a sample program

(2) Setting conditions for the intelligent function of the module switch

Setting is as follows:

Table 8.2-1 Setting the intelligent function of the module switch

Switch

No.

Switch name Description

1 Not used

2 Not used

3 Not used

4 Measuring mode

5 Operating mode

-

-

-

0 (Low sensitivity mode)

0 (measuring mode)

(3) Programming conditions

(a) Setting the operating conditions

- Phase wire system: Three-phase 3-wire

(b) Alarm monitoring setting

- Io1 primary alarm value

- Io1 primary alarm reset method

- Io1 primary alarm delay time

- Io1 secondary alarm value

- Io1 secondary alarm reset method

- Io1 secondary alarm delay time

- Ior1 primary alarm value

- Ior1 primary alarm reset method

- Ior1 primary alarm delay time

- Ior1 secondary alarm value

- Ior1 secondary alarm reset method

- Ior1 secondary alarm delay time

：

：

：

：

：

：

：

：

：

：

：

：

300 (mA)

Auto reset

10 sec

500 (mA)

Self-retention

0 sec

100 (mA)

Auto reset

30 sec

200 (mA)

Self-retention

15 sec

QE82LG

8 - 2

8 Programming

QE82LG

(4) Before creating a program

Before creating a program, attach QE82LG to the base unit, and connect it to external devices.

Connected device: ZCT Input (+Z, Z, CH1, CH2), voltage input (P1, P2, P3)

Three-phase 3-wire

Power source side

Load 1 Load 2

Figure 8.2-2 Example of wiring using a sample program

Load side


(ZCT)

8 - 3

8 Programming

8.3 Sample programming

(1) List of devices

Device

D5

D6

D7

D8

D9

D0

D1

D2

D3

D4

D10

D11

D20

X0

X1

X2

X3

X4

X9

XF

Y9

Y10

Y11

Y12

Y13

Y14

QE82LG

Table 8.3-1 List of devices

Function

Device that stores Io1 present value

Device that stores Io1 max. value

Device that stores year of time of Io1 max. value

Device that stores month and day of time of Io1 max. value

Device that stores hour and minute of time of Io1 max. value

Device that stores second and day of the week of time of Io1 max. value

Device that stores Ior1 present value

Device that stores Ior1 max. value

Device that stores year of time of Ior1 max. value

Device that stores month and day of time of Ior1 max. value

Device that stores hour and minute of time of Ior1 max. value

Device that stores second and day of the week of time of Ior1 max. value

Device that stores latest error code

Module ready




QE82LG

(X/Y0 to X/YF)


Operating condition setting completion flag

Error flag


Device that turns ON to send an output to the external device in the case that

Io1 primary alarm flag (X1) is observed


Io1 secondary alarm flag (X2) is observed


Ior1 primary alarm flag (X3) is observed


Ior1 secondary alarm flag (X4) is observed

Device that turns ON to send an output to the external device in the case of an error

QY40

(Y10 to Y1F)

8 - 4

8 Programming

QE82LG

(2) List of buffer memories to be used

Table 8.3-2 List of buffer memories to be used

Device Description

Setting value

U0 \ G0

U0 \ G1000

U0 \ G1001

U0 \ G1002

Phase wire system

Io1 primary alarm value

Io1 primary alarm reset method

Io1 primary alarm delay time

3

300

1

10

300 mA

Auto reset

10 sec

Remarks

Three-phase 3-wire

U0 \ G1003

U0 \ G1004

U0 \ G1005

U0 \ G1050

Io1 secondary alarm value

Io1 secondary alarm reset method

Io1 secondary alarm delay time

Ior1 primary alarm value

500

0

0

100

500 mA

Self-retention

0 sec

100 mA

U0 \ G1051

U0 \ G1052

U0 \ G1053

U0 \ G1054

Ior1 primary alarm reset method

Ior1 primary alarm delay time

Ior1 secondary alarm value

Ior1 secondary alarm reset method

1

30

200

0

Auto reset

30 sec

200 mA

Self-retention

U0 \ G1055

U0 \ G1100

U0 \ G1101

Ior1 secondary alarm delay time

Io1 present value

Io1 max. value

15

-

-

15 sec

Stores Io1 present value

U0 \ G1102

U0 \ G1103

U0 \ G1104

U0 \ G1105

Year of time of Io1 max. value

Month and day of time of Io1 max. value

Hour and minute of time of Io1 max. value

Second and day of the week of time of Io1 max. value

-

-

-

-

Stores Io1 max. value

Stores year of time of Io1 max. value

Stores month and day of time of

Io1 max. value

Stores hour and minute of time of

Io1 max. value

Stores second and day of the week of time of Io1 max. value

U0 \ G1150

U0 \ G1151

Ior1 present value

Ior1 max. value

-

-

Stores Ior1 present value

U0 \ G1152

U0 \ G1153

U0 \ G1154

U0 \ G1155

Year of time of Ior1 max. value

Month and day of time of Ior1 max. value

Hour and minute of time of Ior1 max. value

Second and day of the week of time of Ior1 max. value

-

-

-

-

Stores Ior1 max. value

Stores year of time of Ior1 max. value

Stores month and day of time of

Ior1 max. value

Stores hour and minute of time of

Ior1 max. value

Stores second and day of the week of time of Ior1 max. value

U0 \ G3000 Latest error code - Stores latest error code

8 - 5

8 Programming

QE82LG

(3) Sample program

1. Initial setting program for QE82LG

Module

READY

Request of operating condition setting

Module

READY

Request of operating

Flag for complete operating condition condition setting setting

Figure 8.3-1 Example of a sample program

8 - 6

U0 \

Phase wire system

U0 \

Io1 primary alarm value

U0 \

Io1 primary alarm reset method

U0 \

Io1 primary alarm delay time

U0 \


U0

\

Io1 secondary alarm reset method

U0 \

Io1 secondary alarm delay time

U0 \

Ior1 primary alarm

Basic operating condition setting

CH1 leak current alarm monitoring setting

U0 \


U0 \


U0 \


U0 \

Ior1 secondary alarm reset method

U0 \

Ior1 secondary alarm delay time

CH1 leak current for resistance alarm monitoring setting


Set Operating condition setting request (Y9) to ON.


Set Operating condition setting request (Y9) to OFF.

8 Programming

QE82LG

2. Io1 measured data acquisition program

Module

READY

Request of operating condition setting

Figure 8.3-2 Example of a sample program (continued)

U0 \

Io1 present value

U0 \

Io1 max. value

U0 \

Year of time of Io1 max. value

U0

\

Month and day of time of Io1 max. value

U0 \

Hour and minute of time of Io1 max. value

U0 \

Second and day of the week of time of Io1 max. value

U0 \

Ior1 present value

U0 \

Ior1 max. value

U0 \

Year of time of Ior1 max. value

U0 \

Month and day of time of Ior1 max. value

U0 \

Hour and minute of time of Ior1 max. value

U0 \

Second and day of the week of time of Ior1 max. value

Acquire the measured value of CH1 leak current

Acquire the measured value of CH1 leak current for resistance

8 - 7

8 Programming

QE82LG

3. Alarm monitoring program

Module ready




4. Error monitoring program

Error flag

Error flag


U0 \

Latest error code

U0 \

Latest error code

Figure 8.3-3 Example of a sample program (continued)

When Io1 primary alarm occurs, output ON to Y10.

When Io1 secondary alarm occurs, output ON to Y11.

When Ior1 primary alarm occurs, output ON to Y12.

When Ior1 secondary alarm occurs, output ON to Y13.

When an error occurs, latest error code is acquired.

When an error occurs, output

ON to Y14.

When the error recovers, latest error code is acquired.

When the error recovers, output

OFF to Y14.

8 - 8

9 Troubleshooting

QE82LG

Chapter 9: Troubleshooting

9.1 List of error codes

When the data are written to the CPU module from this module or when a reading error occurs, error codes will be stored into the following buffer memory.

Table 9.1-1 Latest error code, storage destination upon error occurrence

Latest error code

Un \ G3000

Time of error occurrence

Un \ G3001 to Un \ G3004

Table below shows error codes.

Error code

(HEX)

Error level

Table 9.1-2 List of error codes

Descriptions Action

0001h

0002h

0003h

1001h

1002h

Mid

Mid

Low

Low

In test mode, “0001h” stores.

Except in test mode, hardware error with the module.

Hardware error with the module.

Phase wire system (Un out of range.

Io1

(Un \ primary

\ G0) is set alarm value

G1000) is set out of range.

It returns from test mode to the measuring mode.

Turn the power OFF/ON.

If the error recurs, the module may have a failure. Consult with a nearest sales agent or our company branch for the symptom of the failure.

Check the setting value, and set it within 1 to 3.

Check the setting value, and set it within following values.

Low sensitivity mode:

0 to 1000mA

High sensitivity mode:

0.00 to 100.00mA

1003h

1004h

Low

Low

Io1 primary alarm reset method value (Un \ G1001) is set out of range.

Io1 primary alarm delay time value (Un \ G1002) is set out of range.



1005h Low


(Un \ G1003) is set out of range.



0 to 1000mA


0.00 to 100.00mA

1006h Low

Io1 secondary alarm reset method (Un \ G1004) is set out of range.

* Also check that it is set in decimal.


Reference

Section

4.2.5

-

Section

6.2.1

Section

6.2.2

Section

6.2.3

Section

6.2.4

Section

6.2.2

Section

6.2.3

9 - 1

9 Troubleshooting

Error code

(HEX)

1007h

1008h

1009h

100Ah

100Bh

100Ch

100Dh

100Eh

100Fh

1010h

1011h

1012h

1013h

Error level

Low

Low

Low

Low

Low

Low

Low

Low

Low

Low

Low

Low

Low

Descriptions

Io1 secondary alarm delay time value (Un \ G1005) is set out of range.

Ior1

(Un

(Un

\ range. range.

\ primary value (Un value (Un \

\

Table 9.1-2 List of error codes alarm value



G1051) is set out of





Ior1 secondary alarm reset method (Un range.

\ G1054) is set out of

Ior1 secondary alarm delay time value (Un \ G1055) is set out of range.

Action




0 mA to 1000 mA


0.00 mA to 100.00 mA





0 mA to 1000 mA


0.00 mA to 100.00 mA


Io2

(Un

Io2

\ primary method value (Un out of range. range. secondary

\

\


* Also check that it is set in decimal. alarm reset

G2004) is set

Io2 secondary alarm delay time value (Un alarm value


Io2 primary alarm reset method value (Un range.

Io2 primary alarm delay time value (Un range.

\

\ G2001) is set out of







0 mA to 1000 mA


0.00 mA to 100.00 mA





0 mA to 1000 mA


0.00 mA to 100.00 mA



QE82LG

Reference

Section

6.2.4

Section

6.2.2

Section

6.2.3

Section

6.2.4

Section

6.2.2

Section

6.2.3

Section

6.2.4

Section

6.2.2

Section

6.2.3

Section

6.2.4

Section

6.2.2

Section

6.2.3

Section

6.2.4

9 - 2

9 Troubleshooting

QE82LG

Error code

(HEX)

Error level

Table 9.1-2 List of error codes

Descriptions Action

1014h

1015h

1016h

1017h

Low

Low

Low

Low

Ior2 primary alarm value




0 mA to 1000 mA


0.00 mA to 100.00 mA

Ior2 primary alarm reset method value (Un \ G2051) is set out of range.

Ior2 primary alarm delay time value (Un \ G2052) is set out of range.







0 mA to 1000 mA


0.00 mA to 100.00 mA

1018h

1019h

Low

Low

Ior2 secondary alarm reset method value (Un \ G2054) is set out of range.

Ior2 secondary alarm delay time value (Un \ G2055) is set out of

0000h ─ range.

Normal

* Also check that it is set in decimal.



-

Reference

Section

6.2.2

Section

6.2.3

Section

6.2.4

Section

6.2.2

Section

6.2.3

Section

6.2.4

-

9 - 3

9 Troubleshooting

QE82LG

9.2 Troubleshooting

9.2.1 When “RUN” LED is turned off

Table 9.2.1-1 When “RUN” LED is turned off

Check item Action

Is power source is supplied?

Is capacity of the power source module sufficient?

Is the watchdog time an error?

Check that supply voltage of the power source is within the rating.

Calculate the consumption current of the CPU module, I/O module, and intelligent function module attached to the base unit, and check that the power capacity is sufficient.

Reset the CPU module, and check whether it is turned on.

If RUN LED is not turned on even after doing the above, the module may have a failure. Consult with a nearest sales agent or our company branch for the symptom of the failure.

Is the module properly attached to the base unit?

Is the slot type set to “empty" in the

I/O assignment setting of the PC parameter at GX Developer?

Check the module attachment status.

Set the slot type to “Intelligent”.

Reference

-

-

-

Section

7.7

Section 3.1

9 - 4

9 Troubleshooting

9.2.2 When “ERR” LED is turned on or flashing

(1) If it is ON

Table 9.2.2-1 When “ERR” LED is turned on

Check item Action

Check the latest error code (Un \ G3000), and take

Did any error occur? a corrective action as described in section 9.1.

After that, reset the CPU module, and check whether it is turned on.

If “ERR." LED is turned on even after doing the above, the module may have a failure. Consult with a nearest sales agent or our company branch for the symptom of the failure.

(2) If it is flashing

Check item

Did any error occur?

Table 9.2.2-2 When “ERR” LED is flashing

Action

The set value may be out of range. Check that the operating condition settings are correct.

Correct configuration or changing Error clear request (YnF) to ON will recover the error. When the error is cleared using Error clear request

(YnF), the operation continues with the previous setting.

QE82LG

Reference

Section 9.1

Reference

Section

5.2.2

Chapter 6

Section

7.6.3

9 - 5

9 Troubleshooting

QE82LG

9.2.3 If the leak current value that is measured using this module does not match with the one measured with other gauge

Table 9.2.3-1 If the leak current value that is measured using this module does not match with the one measured with other gauge

Check item Action Reference

Is phase wire system correct?

Does the compared gauge measure the effective value correctly?

Is the secondary of ZCT short-circuited?

Is the secondary of ZCT open-circuited?

Are you using other ZCT than recommended ones?

Check the value in the buffer memory for checking the phase wire system. When the value in the buffer memory is changed, you need to turn the request for operating condition setting into ON.

Otherwise, it will not be applied to the measurement.

This module stores the effective value into the buffer memory. If the compared device uses the average value instead of the effective value, the resulted value may largely differ when there is current distortion in the measurement circuit.

Make sure that the secondary of ZCT is not short-circuited.

Make sure that the secondary of ZCT is not open-circuited.

ZCTs that can be connected to this module is limited to only Mitsubishi’s ZCT. Check that other company’s ZCT is not being used. (Refer to section 7.5.3.1.)

Section

6.1

Section

7.5.3

-

-

-

-

9 - 6

9 Troubleshooting

QE82LG

9.3 Q&A

9.3.1 General

Q

A

Q

To what degree is the module durable against overvoltage and overcurrent? Is external protective circuit required?

Momentary* : Up to 2 times as high as rated voltage and 20 times as high as rated current.

Continuous : Up to 1.1 times as high as rated voltage and rated current.

* Momentary means: Energizing 9 times for 0.5 seconds at 1-minute intervals, and then 1 time for 5 seconds.

External protective circuit is not required.

Is it OK to open secondary output terminal of zero-phase current transformer (ZCT)?

A

Do not open the secondary output terminals (k, l) of ZCT. Opening the secondary output terminals may affect characteristics of ZCT.

In addition, do not short-circuit or ground the test terminals (kt, lt) of ZCT. Otherwise, the leak current may not be detected correctly.

Q

A

Is measurement of inverter circuit possible?

Measuring the secondary side of the inverter is impossible due to the large fluctuation of frequency.

Make measurement on the primary side of the inverter. However, since a current waveform on the primary side of the inverter has a distortion containing the harmonic components, a slight error occurs.

Q Obtained values may be different from other measuring instruments. Why is it so?

A

There are various possible causes. Check the following first, please:

[1] Check for wiring errors (connections of voltage circuits, in particular).

[2] Check for the short-circuit on the secondary side of ZCT.

[3] ZCT connectable to the module is the dedicated ZCT manufactured by Mitsubishi Electric only. Check that the proper ZCT is connected.

[4] On the split-type ZCT, check for the poor engagement or separation of fitting surfaces.

[5] On the split-type ZCT, check for the pinching of foreign object between fitting surfaces.

[6] Check that the measuring instrument used for comparison indicates the correct RMS value.

[7] If the measuring instrument used for comparison measures an average value instead of rms value, distortion in the current of the circuit to be measured causes a significant difference of values. This module measures an rms value.

9.3.2 Q&A about Specifications

Q What does “the module tolerance” against?

A

Q

A

Q

A

Q

A

It means tolerance against the input leak current.

In case of low sensitivity mode, both of the leak current (Io) and resistance leak current (Ior) have a rated leak current of 1000 mA. Therefore, within the range of the input leak current from 100 to 1000 mA, a tolerance is ±2.5% of input leak current.

On the other hand, within the range of the input leak current below 100 mA, a tolerance is ±2.5 mA.

In case of high sensitivity mode, a tolerance is ±2.5 mA because leak current rating is 100mA.

Is tolerance of zero-phase current transformer (ZCT) included?

Tolerance of the module does not include a tolerance of zero-phase current transformer (ZCT).

A maximum value of tolerance is obtained by summing tolerance of the module and that of zero-phase current transformer (ZCT).

To what degree an area of microcurrent is measured?

A leak current is measured from the area exceeding 1 mA. In an area lower than 1 mA, a measurement result is indicated as “0” (zero).

Is measurement of leak current (Io) possible without applying a voltage?

Measurement of leak current (Io) is impossible without applying a voltage. When an input voltage is lower than 80 V or when a frequency is inappropriate (below 44.5 Hz or over 66.5 Hz), the measurement result is 0 mA.

9 - 7

9 Troubleshooting

Q

A

Q

QE82LG

Is measurement of leak current possible without applying a voltage?

Measurement of leak current is impossible without applying a voltage. Be sure to connect a voltage.

What kind of time is “response time”?

“Response time” is a period of time between a point of sudden change of voltage or current input and a point that an output (computation result) follows up to within ±10% of input.

Response time

100%

90%

A

Actual value

Measured value of the module

Time

Q Hardware error “0001h” occurred.

A

Check whether the module is in the test mode. In the test mode, a pseudo value “0001h” is stored as the latest error code to allow debugging of a ladder program. By returning from test mode to measuring mode, the error code becomes ”0000h.”(Refer to Section 4.2.5.)

If the module is not in the test mode, it means a hardware error. Take actions in Section 9.1.

9.3.3 Q&A about Installing

Q What wire diameter can penetrate zero-phase current transformer (ZCT)?

A Refer to “Appendix 2 Option Device (1) Specifications.”

9.3.4 Q&A about Connection

Q

Does polarity exist in connection between zero-phase current transformer (ZCT) and insulation monitor module?

A No it doesn’t.

Q Are there any key points in avoiding errors in wiring?

A

When making measurement for two circuits, pay attention not to connect zero-phase current transformer

(ZCT) to the incorrect channel (CH1 or CH2). Pay attention not to make errors in connecting voltage inputs among P1, P2, and P3.

9.3.5 Q&A about Setting

Q Is the setting required?

A At least, phase wire setting is required. Specify settings in accordance with a circuit to be connected.

9 - 8

Appendix

Appendix

Appendix 1: External dimensions

QE82LG

MFQ-LG2

Unit: mm

Appendix - 1

Appendix

QE82LG

Appendix 2: Optional devices

(1) Split-type zero-phase current transformer (ZCT)

(a) Specification

Item

Model

Hole diameter(mm)

Primary current

CZ-22S

φ22

50 A AC

CZ-30S

φ30

100 A AC

Specifications

CZ-55S

φ55

300 A AC

CZ-77S

φ77

600 A AC

CZ-112S

φ112

1000 A AC

Maximum operating voltage 600 V AC

Rated frequency

Rated current in short time

(Peak value)

50 Hz to 60 Hz

（

50 kA

100 kA ）

Category of measuring

Pollution degree

Regulatory Compliance

Combined equipment

Ⅲ

2

EN61010-2-032

Using with fit QE82LG

Mass 0.5 kg 0.6 kg 1.8 kg 2.8 kg 6.0 kg

(b) Hole diameter of split-type zero-phase current transformer (ZCT) and Maximum wire radius penetrable and allowable current

Wiring method

Maximum wire radius penetrable （ mm 2 ）

（ Allowable current(A) ）

Wiring

Wire number

Type of wire CZ-22S CZ-30S CZ-55S CZ-77S CZ-112S

600V vinyl wire

（ IV wire ） (

22

115 ) (

60

217 ) (

250

556 ) (

500

842 )

－ *1

Single-phase

2-wire

2 600Vcross polyethylene

Isolation wire

（ CV wire ）

22

( 130 ) (

38

190 ) (

200

545 ) (

500

920 ) (

1000

1470 )

Single-phase

3-wire

Three-phase

3-wire

3

600V vinyl wire

（ IV wire ）

600Vcross polyethylene

Isolation wire

（ CV wire ）

(

(

22

115

14

100 )

)

(

(

38

162

22

135 )

)

(

(

200

496

150

455 )

)

(

(

500

842

325

760 )

)

(

－ *1

800

1285 )

Note:

(1)The thickness of the wire is different from maker.

(2)IV wire shows that an insulator.

(3)CV line is as culvert laying showed deference value and Compressed stranded wire.

(more than 600 mm 2 cable is showed as reference value.)

*1. Use the electric wire of penetrable size. And, satisfy the allowable current of the electric wire which an electric current flowing through the point targeted for a measurement uses.

Appendix - 2

Appendix

(c) External dimensions

(CZ-22S, CZ-30S, CZ-55S, CZ-77S)

Hole for 2-M5 bolt

CZ-55S

Short-circuit plate

Tester terminal

(CZ-112S)

Hole for 4-M6 bolt

QE82LG

Combination

screw

Secondary terminal

Ｅ

Ｆ

Ｇ

Ｈ

Ｊ

K

Ａ

Dimension table Unit[mm]

CZ-22S CZ-30S CZ-55S CZ-77S CZ-112S

φ22 φ30 φ55 φ77 φ112

Ｂ

Ｃ

Ｄ

27

100

112

27

114

130

32

148

160

41

198

210

57

234

246

128

5

30

12

41

77

144

5

30

12

47

89

177

7

36

12

66

124

232

10

45

12

90

171

268

8

62

12

109

207

Appendix - 3

Appendix

QE82LG

(2) Through-type zero-phase current transformer

(a) Specification

Item

Model

Hole diameter(mm)

Maximum operating voltage

Rated frequency


Mass

ZT15B

φ15

0.2 kg

ZT30B

φ30

0.4 kg

Specifications

ZT40B

φ40

ZT60B

600 V AC

50 Hz to 60 Hz

50 kA

（ 100 kA ）

0.6 kg

φ60

2.0 kg

ZT80B

φ80

2.6 kg

ZT100B

φ100

3.3 kg

(b) Hole diameter of through-type zero-phase current transfer (ZCT) and Maximum wire radius penetrable and allowable current

Wiring method

Maximum wire radius penetrable （ mm 2 ）

（ Allowable current(A) ）

Wiring

Wire number

Type of wire ZT15B ZT30B ZT40B ZT60B ZT80B ZT100B

600V vinyl wire

（ IV wire ）

14

（ 88 ）

60

（ 217 ）

150

（ 395 ）

325

（ 650 ）

－ ※ 1 － ※ 1

Single-phase

2-wire

2 600Vcross polyethylene

Isolation wire

（ CV wire ）

2

（ 33 ）（

38

190 ）（

60

260 ）（

250

655 ）（

400

870 ）（

600

1140 ）

Single-phase

3-wire

Three-phase

3-wire

3

600V vinyl wire

（ IV wire ）

600Vcross polyethylene

Isolation wire

（ CV wire ）

8

（ 61 ）

（

2

33 ）

38

（ 162 ）

（

38

190 ）

100

（ 298 ）

（

60

260 ）

250

（ 556 ）

200

(560)

500

（ 842 ）

（

325

760 ）

725

（ 1095 ）

（

600

1140 ）

Note

(1)The thickness of the wire is different from maker.

(2)IV wire shows that an insulator.

(3)CV line is as culvert laying showed deference value and Compressed stranded wire.

（ more than 600 mm 2 cable is showed as reference value.

）

*1. Use the electric wire of penetrable size. And, satisfy the allowable current of the electric wire which an electric current flowing through the point targeted for a measurement uses.

Appendix - 4

Appendix

(c) External dimensions

ZT15B, 30B, 40B models

Hole for attachment

(Fixing screw

M5x0.8x20)

Dimension table for ZT15B, 30B, 40B models ZT60B, 80B, 100B models

QE82LG

M3.5 terminal screw

Dimension table for ZT60B, 80B, 100B models

Hole for attachment

(Fixing screw M6x20)

M3.5 terminal screw

Unit [mm]

Appendix - 5

Appendix

(3) Zero-phase current transformer with primary conductor

(a)Specification

Item

Model

Allowable current

Number of poles

Maximum operating voltage

ZTA600A

600 A

Specification

ZTA1200A

1200 A

3

600 V AC


Mass

100 kA (peak value)

6.5 kg 11 kg

◆ Zero-phase current transformer with primary conductor (ZTA600A, ZTA1200A, ZTA2000A)

QE82LG

ZTA2000A

2000 A

27 kg

Hole for attachment

M10 bolt

M10 bolt

 13

Hole for attachment

Hole for attachment

M12 bolt

Appendix - 6

Appendix

QE82LG

Appendix 3: Addition or change of functions

The following table lists functions added or changed to the QE82LG and GX Works2, serial number of compatible QE82LG, and software version of compatible GX Works2.

Added or changed contents serial number with the QE82LG *1

Software version with the GX Works2

Reference

Support with GX Works2

Upper 6 digits is

120911 or later

1.90U or later -


Upper 6 digits is

150612 or later

1.501X or later

Section 4.2.1

Section 7.6.2

*1: Shown on the front (at the bottom) of the module.

When a serial number is not displayed on the front of module, the module does not support added or changed contents.

Appendix - 7

Index

【 A 】

Alarm delay time ····································· 4-4

Alarm flag (Xn1 - Xn8) ························ 4-5, 5-2

Alarm monitoring function ·························· 4-4

Alarm non-occurrence status ····················· 4-5

Alarm occurrence count clear completion flag (XnB,XnD) ································ 4-10, 5-4

Alarm occurrence count clear request

(YnB,YnD) ···································· 4-10, 5-6

Alarm occurrence count function ··············· 4-10

Alarm occurrence status ··························· 4-5

Alarm reset method·································· 4-7

Alarm reset request (Yn1,Yn5) ·················· 5-5

Alarm reset status ···································· 4-5

Alarm value ············································ 4-4

ALM1 LED, ALM2 LED ····························· 4-5

Appropriate wire ······································ 7-7

Auto reset ·············································· 4-7

【 B 】

Bar terminal ············································ 7-7

【 C 】

CH1 Alarm, CH2 Alarm ·······················A-9, 4-6

CH1 alarm occurrence count,

CH2 alarm occurrence count ············· A-9, 4-10

CH1 max. value, CH2 max. value ·········A-9, 4-3

【 E 】

ERR. LED ·············································· 7-4

Error clear request (YnF)··························· 5-7

Error code ·············································· 9-1

Error flag (XnF) ······································· 5-4

【 G 】

GX Developer ······································· 7-20

GX Works2 ·········································· 7-14

【 I 】

Io1, Ior1, Io2, Ior2 ······························A-9, 4-2

Index - 1

【 L 】

Latest error code ··································· 6-12

【 M 】

Max. value ······································· 4-2, 6-7

Max. value clear completion flag (XnA,XnC) 5-4

Max. value clear request (YnA,YnC) ······ 4-3, 5-6

Max. values hold function ·························· 4-3

Measured value of leak current··················· 6-6

Measuring function ·································· 4-2

Module ready (Xn0) ································· 5-2

【 N 】

Name of each part ··································· 7-3

【 O 】

Operating condition setting completion flag (Xn9) ··············································· 5-3

Operating condition setting request (Yn9) ····· 5-5

【 P 】

Phase wire system ··································· 6-4

【 S 】

Self-retention ·········································· 4-7

Self-retention status ································· 4-5

Serial number ········································· 2-3

【 T 】

Test function ········································· 4-11

Time of error ········································· 6-13

Time of max. value ·························· 6-8, 6-10

【 Z 】

ZCT ········································ A-9, 7-8, 7-11

Zero-phase current transformer ···· A-9, 7-8, 7-11

Warranty

For using this product, please thoroughly read the following product warranty descriptions.

1. Gratis Warranty Period and Gratis Warranty Coverage

If any failure or defect (hereinafter collectively called “failures”) for which our company is held responsible occurs on the product during the gratis warranty period, our company shall replace the product for free through the distributor at which you purchased the product or our service company.

However, if an international travel is required for replacement, or a travel to an isolated island or remote location equivalent is required for replacement, the actual cost incurred to send an engineer(s) shall be charged.

[Gratis Warranty Period]

The gratis warranty term of the product shall be for one year after the date of purchase or delivery to a designated place.

Note that after manufacture and shipment from Mitsubishi, the maximum distribution period shall be six (6) months, and the longest gratis warranty term after manufacturing shall be eighteen (18) months. The gratis warranty term of repair parts shall not exceed the gratis warranty term before repairs.

[Gratis Warranty Coverage]

(1) The gratis warranty shall apply only if the product is being used properly in the conditions, with the methods and under the environments in accordance with the terms and precautions described in the instruction manual, user’s manual, caution label on the product, etc.

(2) Replacement shall be charged for the following cases even during the gratis warranty period.

1) Failures occurring due to your improper storage or handling, carelessness or fault, and failures arising from the design contents of hardware or software you use.

2) Failures arising from modification you performed on the product without prior consent of our company.

3) Failures occurring in the event that the product is assembled into the device you use and that are acknowledged as avoidable if the device is equipped with a safety mechanism that comply with the legal regulations applicable to the device or with functions/architecture which are considered as necessary to be equipped under conventions of the industry.

4) Failures due to accidental force such as a fire, abnormal voltage, etc. and force majeure such as an earthquake, thunderstorm, wind, flood, etc.

5) Failures due to matters unpredictable based on the level of science technology at the time of product

6) Other failures which are beyond responsibility of our company or which you admit that our company is not held responsible for.

2. Fare-Paying Repair Period after Production Discontinued

(1) The period our company may accept product replacement with charge shall be seven (7) years after production of the product is discontinued.

Production stoppage shall be announced in the technical news, etc. of our company.

(2) The product (including spare) cannot be supplied after production is discontinued.

3. Exemption of Compensation Liability for Opportunity Loss, Secondary Loss, etc.

Our company shall not be liable to compensate for any loss arising from events not attributable to our company, opportunity loss and lost earning of the customer due to failure of the product, and loss, secondary loss, accident compensation, damage to other products besides our products and other operations caused by a special reason regardless of our company’s predictability in both within and beyond the gratis warranty period.

4. Change of Product Specifications

Please be advised in advance that the specifications described in catalogs, manuals or technical materials are subject to change without notice.

5. Application of Products

(1) For use of our general-purpose sequencer MELSEC-Q series and Insulation Monitoring Module QE82LG, they shall be used for a purpose which shall not lead to a material accident even when a failure or malfunction of the sequencer occurs, and a backup or fail-safe function shall be implemented systematically at external of the device in the event of a failure or malfunction.

(2) Our general-purpose sequencers are designed and manufactured as general-purpose products which are targeted for general industry applications. Therefore, use of the sequencer for purposes in nuclear power plants and other power plants of each electric power company which greatly affect public, or for purposes in each JR company and the Defense Agency requiring a special quality assurance system shall be excluded from its applications.

However, the sequencer may be used for such purposes if the customer acknowledges that it should be used for limited purpose only and agrees not to require special quality.

Also, if you are considering to use this device for purposes that are expected to greatly affect human life or property and require high reliability especially in safety or control system such as aviation, medical care, railroad, combustion/fuel device, manned carrier device, entertainment machine, safety equipment, please consult with our service representative to exchange necessary specifications.

= End of page =

Energy Measuring Module

■

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