Mitsubishi Electric QE82LG User manual

Insulation Monitoring Module
User’
QE82LG
Mitsubishi Programmable Controller
s Manual (Details)

IB63564F
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●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".
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 - 55ºC.
- Places the Relative humidity exceeds the range 5 - 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
CAUTION
DANGER

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[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 12mm
Tightening torque of the fixing-module screws 0.36 - 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.

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[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 further 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 600V circuit only. They
are not used with exceeding 600V 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: 22N 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.

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[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 to +75ºC.
- Places the Relative humidity exceeds the range 5 - 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.

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Revision history * Manual number is provided at the bottom of the cover page.
Printed date
* Manual number
Revision history
Jan, 2011IB-63564 First edition
Sep, 2011IB-63564-A
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
Aug. 2012 IB-63564-B Correction
Section 2.3, Section 7.6, Section 9.1
Jul. 2013 IB-63564-C 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
Nov. 2013 IB-63564-D 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 IB63564E Correction
Cover, Back cover
Jul, 2017 IB63564F 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
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

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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 - 3-2
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 - 7-24
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 ····································································································7-14
7.7 Setting from GX Developer ·································································································7-20

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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

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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.
(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
CZ-22S , CZ-30S , CZ-55S
CZ-77S , CZ-112S
Through-type ZCT
ZT15B, ZT30B , ZT40B , ZT60B ,
ZT80B , ZT100B ,
ZTA600A , ZTA1200A , ZTA2000A
cable
CE marking cable (twisted pair cable )
Single wire:
AWG24 – AWG18 (φ0.5 - 1.0mm)
Stranded wire:
AWG22 – AWG18 (0.3 – 0.8 mm
2
)
Max. cable length
50m

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Names, abbreviations, terminology
In this manual, the following names, abbreviations, and terminology are used to explain the insulation
monitoring module, unless otherwise specified.
Names, abbreviations,
terminology
Descriptions of names, abbreviations, terminology
Io1
Abbreviation for CH1 leak current.
Ior1
Abbreviation for CH1 leak current for resistance.
Io2
Abbreviation for CH2 leak current.
Ior2
Abbreviation for CH2 leak current for resistance.
CH1 Alarm
Collective term for Io1 1-step alarm, Io1 2-step alarm, Ior1 1-step
alarm, and Ior1 2-step alarm.
CH2 Alarm
Collective term for Io2 1-step alarm, Io2 2-step alarm, Ior2 1-step
alarm, and Ior2 2-step alarm.
CH1 max. value
Collective term for Io1 max. value and its date/time of occurrence, and
Ior1 max. value and its date/time of occurrence.
CH2 max. value
Collective term for Io2 max. value and its date/time of occurrence, and
Ior2 max. value and its date/time of occurrence.
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.
CH1 Alarm occurrence count
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.
CH2 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.
ZCT
Abbreviation for zero-phase current transformer
Product configuration
The following describes the product configuration.
Model name
Product name
Quantity
QE82LG
Insulation monitoring Module
1

A - 10
Note

1 - 1
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.

2 - 1
QE82LG
2 System Configuration
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
Attachable
quantity.
Remarks
CPU Type
CPU Model
Programmable
controller
CPU
Basic model
QCPU
Q00JCPU
16
Q00CPU
24
Q01CPU
High performance
model QCPU
Q02CPU
64
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU
Process CPU
Q02PHCPU
64
Q06PHCPU
Q12PHCPU
Q25PHCPU
Redundant CPU
Q12PRHCPU
53
Q25PRHCPU
Universal model
QCPU
Q00UJCPU
16
Q00UCPU
24
Q01UCPU
Q02UCPU
36
Q03UDCPU
64
Q04UDHCPU
Q06UDHCPU
Q10UDHCPU
Q13UDHCPU
Q20UDHCPU
Q26UDHCPU
Q03UDECPU
Q04UDEHCPU
Q06UDEHCPU
Q10UDEHCPU
Q13UDEHCPU
Q20UDEHCPU
Q26UDEHCPU
Q50UDEHCPU
Q100UDEHCPU

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QE82LG
2 System Configuration
Attachable CPU Module
Attachable
quantity.
Remarks
CPU Type
CPU Model
Programmable
controller
CPU
High-Speed
Universal model
QCPU
Q03UDVCPU
64
Q04UDVCPU
Q06UDVCPU
Q13UDVCPU
Q26UDVCPU
Q04UDPVCPU
Q06UDPVCPU
Q13UDPVCPU
Q26UDPVCPU
C Controller module
Q06CCPU-V
64
Q06CCPU-V-B
Q12DCCPU-V
Q24DHCCPU-LS
Q24DHCCPU-V
Q26DHCCPU-LS
(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
Number of modules
Remarks
QJ72LP25-25
64
QJ72LP25G
QJ72BR15
(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 - 3
QE82LG
2 System Configuration
(3) Applicable software package
QE82LG supported software packages are as follows:
(a) Software package for sequencer
Product name
Model name
Remarks
GX Works2 SWnDNC-GXW2
iQ Platform compatible programmable
controller engineering software
GX Developer SWnD5C-GPPW
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).
19H101
710G1234
Module version
Serial No.

2 - 4
QE82LG
2 System Configuration
(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.
(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.
Function version
Serial number

3 - 1
QE82LG
3 Specifications
Chapter 3: Specifications
3.1 General specifications
Item
Specifications
Phase-wire system
single-phase 2-wire / single-phase 3-wire / three-phase 3-wire
Ratings
Voltage
circuit
*1,*2
single-phase
2-wire,
three-phase
3-wire
110 V , 220 V AC
single-phase
3-wire
110V AC (1 - 2 line, 2 - 3 line) 220 V (1 - 3 line)
Leak current circuit
1 A AC
(Zero-phase current transformer (ZCT) is used. It indicates the primary current
value of ZCT.)
Frequency
50-60 Hz
Measuring range
Low sensitivity mode : 0-1000mA
High sensitivity mode : 0.00-100.00mA
Resolution
Low sensitivity mode : 1mA
High sensitivity mode : 0.01mA
Allowable tolerance of module
(excluding ZCT)
Low sensitivity mode : Leak current
: ±2.5% (10 – 100% range of Ratings)
: ±2.5mA (0 – 10% range of Ratings)
: Leak current for resistance
: ±2.5% (10 – 100% range of Ratings)
: ±2.5mA (0 – 10% range of Ratings)
High sensitivity mode : Leak current
: ±2.5mA
: Leak current for resistance
: ±2.5mA
Measurable circuit count
2 circuits*3
Data update cycle
Leak current : 2 seconds or less
Leak current for resistance : 10 seconds or less
Backup for electric blackout
Nonvolatile memory is used.
(Items: Settings, Max. value and date/time of occurrence,
Alarm occurrence
count)
I/O occupation
16 points (I/O assignment: intelligence 16 points)
* 1:110 V, 220V direct connection is possible. Above 440V 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 - 2
QE82LG
3 Specifications
3.2 Electrical and mechanical specifications
Item
Specifications
Consumption
VA
Voltage
circuit
Each phase 0.1 VA (at 110 V AC), Each phase 0.2 VA (at 220 V AC)
Internal current consumption
(5 V DC)
0.17 A
Operating temperature
0 – 55°C (Average daily temperature 35°C or below)
Operating humidity
5 – 95% RH (No condensation)
Storage temperature
-25° – +75°C
Storage humidity
5 – 95% RH (No condensation)
Operating altitude
2000m or below
Installation area
Inside a control panel
Operating environment
No corrosive gas
Vibration resistance
Conforms to JIS
B 3502,
IEC 61131-2
Frequency
Constant
acceleration
Half
amplitude
Sweep
time
Intermittent
vibration
5 – 8.4 Hz - 3.5 mm XYZ
each
direction
10 times
8.4 –150 Hz 9.8 m/s2-
Continuous
vibration
5 –8.4 Hz
-
1.75 mm
-
8.4
–
150 Hz
4.9 m/s
2
-
Impact resistance
Conforms to JIS B 3502, IEC 61131-2 (147 m/s2, XYZ each direction 3 times)
Over voltage category *1
II or less
Pollution degree *2
2 or less
Equipment category
Class I
Applicable
wire
(Usable
electric
wire)
ZCT Input
terminal
(Z+, Z terminal)
*3
Single wire
AWG24 – AWG18 (φ0.5 - 1.0mm)
Stranded wire*4
AWG22 – AWG18 (0.3 – 0.8 mm2)
Voltage input
terminal
Single wire
AWG24 – AWG18 (φ0.5 - 1.0mm)
Stranded wire *4
AWG22 – AWG18 (0.3 – 0.8 mm2)
Tightening torque
Module-fixing screws (M3 screw) *5
0.36 – 0.48 N
･
m
Commercial frequency
withstand voltage
Between voltage/leak current input terminals – FG terminal
2210 V AC
5 sec
Between voltage/leak current input terminals – sequencer
power source and GND terminal
2210 V AC
5 sec
Insulation resistance
5 MΩ or more (500 V DC) at locations above
External dimensions
27.4 mm (W) x 98 mm (H) x 90 mm (D), excluding protruding portions
Mass
0.1 kg
Product life expectancy
10 years (used under the average daily temperature 35°C or less)
*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.

4 - 1
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
1 Measurement
It enable measures Io1, Ior1, Io2,
and Ior2, and stores
the records into a buffer memory as needed. Section 4.2.1
It changes a low sensitivity mode (0-1000mA) and high
sensitivity mode (0.00-100.00mA)
and can measure an
leak current.
*1
Section
7.6.2
7.7.2
2 Hold max. values
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.
Section
4.2.2
3 Alarm monitoring
It can monitor the upper limit for Io1，Ior1，Io2, and Ior2.
In a
ddition, 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.
Section
4.2.3
4
Alarm occurrence
count
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
4.2.4
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 - 2
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)
Max. value (Un\G1101)
Date/time of occurrence (Un\G1102 to Un\G1105)
CH1 leak current for
resistance Present value (Un\G1150)
Max. value (Un\G1151)
Date/time of occurrence (Un\G1152 to Un\G1155)
CH2 leak current Present value (Un\G2100)
Max. value (Un\G2101)
Date/time of occurrence (Un\G2102 to Un\G2105)
CH2 leak current for
resistance Present value (Un\G2150)
Max. value (Un\G2151)
Date/time of occurrence (Un\G2152 to Un\G2155)
(2) Resolution of measured data
Resolution of measured data is described as follows:
- Leak current, leak current for resistance
Measured items
Mode
Resolution
Measuring range
Io1
Ior1
Io2
Ior2
Low sensitivity
mode
Integer 1 mA 0-1000mA
High sensitivity
mode
Two
decimal
places
0.01ｍA 0.00-100.00mA
(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
Behavior of this module
Io1
Ior1
Io2
Ior2
When the input current is less than 1 mA in low sensitivity mode
or 0.01mA 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.