Mitsubishi Electric MELSEC Q Series User manual

Energy Measuring Module
User’
QE81WH
Mitsubishi Programmable Controller
s Manual (Details)

IB63563F
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● SAFETY PRECAUTIONS ●
(Read these precautions before using this product.)
This manual contains important instructions for MELSEC-Q series QE81WH.
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 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
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.
[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.
[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.

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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 current sensor (EMU-CT***,
EMU-CT***-A or EMU2-CT5). Please not to exceed the ratings of this product for input of current
sensor. For further details, please refer to current sensor manual to maintain the functionality and
the accuracy of this product .
 Current sensor (EMU-CT***, EMU-CT***-A (Excluding EMU-CT5-A)) is used only for low voltage
circuit. It cannot be used with a high voltage circuit. Also, EMU2-CT5 and EMU-CT5-A should be
used with the secondary side (5 A) of transformer transfixed. In case directly using for the circuit,
only the circuit up to 200V can be used. If it is connected with a high-voltage circuit by mistake, it
may cause a burnout of the device and a fire. It is critically dangerous. For the Allowable
maximum voltage, refer to Appendix 2 “Option devices”.
 Current sensor has a polarity (directionality). Be careful about it when installing the module.
 Do not open the secondary side of current sensor.
 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.
 To protect persons who do not have adequate knowledge of electric equipment from elec
tric
shocks, any of the following measures should be taken for the panel.
(a) To lock the panel so tha
t only trained persons having adequate knowledge of electric equipment
can open it.
(b) To design the structure so that the power is automatically interrupted upon opening of the panel.
The protection class of the panel should be IP2X or h
i
g
h
er.

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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 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.

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Revision history
* Instruction Manual Number is provided at the bottom of the cover page.
Printed date *Instruction Manual # Description of revisions
Sep, 2010 IB-63563 First edition
Sep, 2011 IB-63563-A Correction
SAFETY PRECAUTIONS, Section 4.2, Section 6.2
Addition
SAFETY PRECAUTIONS, Section 2.1, Section 3.2,
Section 6.3, Section
7.4,
Section 9.3
Aug, 2012 IB-63563-B
Correction
2.3，3.1，5.2，6.1，6.2，6.3，9.1
Addition
3.1，5.2，6.1，6.2，6.3，7.6
Jan, 2016 IB63563C Correction
A-8, 2.1, 8.1, 8.4, 8.5, 8.6, 9.5, Appendix-2, Appendix-5
Jul, 2017 IB63563D Correction
SAFETY PRECAUTIONS,
Compliance with the EMC and Low Voltage Directives,
Section 2.1, Chapter 3, Chapter 4, Chapter 5, Section 6.2, Section 6.3
,
Section 7.2, Section 7.5, Section 7.6, Chapter 8, Section 9.3, Appendix
2, Appendix 3, Index, Back cover
Jan, 2021 IB63563E Correction
Compliance with the EMC and Low Voltage Directives,
Section 3.2, Back cover
Dec, 2021 IB63563F Correction
Precautions for Operating Environment and Conditions,
Installation Precautions, Storage Precautions,
Compliance with the EMC and Low Voltage Directives,
Section 3.1, Section 3.2, Section 4.2, Section 6.1, Section 6.2,
Section 7.1, Section 7.4, Section 7.5, Section 7.6, Section 8.3,
Appendix 2, Back cover
This manual does not guarantee to protect or does not give 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.
 2010 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
Product configuration ············································································································· A-8
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 - 3-3
3.1 General specifications ·······································································································3-1
3.2 Electrical and mechanical specifications·················································································3-2
Chapter 4: Functions 4-1 - 4-18
4.1 List of functions·················································································································4-1
4.2 Functions in detail ············································································································4-2
Chapter 5: I/O signal to CPU module 5-1 - 5-6
5.1 List of I/O signals···············································································································5-1
5.2 Details of I/O signals ··········································································································5-2
Chapter 6: Buffer memory 6-1 - 6-30
6.1 Buffer memory assignment··································································································6-1
6.2 Configurable sections (Un\G0 to Un\G99) ·············································································6-6
6.3 Measurement sections (Un\G100 to Un\G2999) ···································································6-15
6.4 Common sections (Un\3000 to Un\G4999) ··········································································6-30
Chapter 7: Setting and procedure for operation 7-1 - 7-31
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 Wiring ····························································································································7-6
7.6 Setting from GX Works2 ···································································································7-17
7.7 Setting from GX Developer ······························································································7-25

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Chapter 8: Programming 8-1 - 8-9
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 - 9-10
9.1 List of error codes ············································································································ 9-1
9.2 Troubleshooting ················································································································ 9-3
9.3 Q&A ······························································································································ 9-7
Appendix Appendix 1 - 6
Appendix 1: External dimensions ···················································································· Appendix-1
Appendix 2: Optional devices ························································································· Appendix-2
Appendix 3: Addition or change of functions ······································································ Appendix-6
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.
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 current censor and cable.
current censor
EMU-CT50, EMU-CT100,
EMU-CT250, EMU-CT400, EMU-CT600,
EMU-CT400-A, EMU-CT600-A
EMU2-CT5
cable or
current censor cable
CE marking cable (twisted pair cable )
Single wire:
AWG24 to AWG17 (φ0.5 mm to 1.2 mm)
Stranded wire:
AWG20 to AWG16 (0.5 mm2 to 1.3 mm2 )
EMU2-CB-Q5A
EMU2-CB-T1M, EMU2-CB-T5M
EMU2-CB-T10M, EMU2-CB-T1MS
EMU2-CB-T5MS, EMU2-CB-T10MS
Max. cable length 50m 11m
Product configuration
The following describes the product configuration.
Model name Product name Quantity
QE81WH Energy Measuring Module 1

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Note

1 - 1
1 Overview
QE81WH
Chapter 1: Overview
This manual explains specifications, handling methods, and programming of Energy
Measuring Module QE81WH (hereinafter, abbreviated as QE81WH) supporting
MELSEC-Q series.
1.1 Features
(1) This Energy Measuring Module can measure various types of electric quantity.
It can measure electric energy, reactive energy, current, voltage, electric power,
power factor, and frequency.
Both consumption and regeneration of the electric energy can be measured.
(2) Extensive monitoring functions
In addition to memorizing the maximum and minimum values, two types of alarm
monitoring for upper and lower limit can be performed.
(3) It also can measure the electric energy for a certain period.
It can measure the electric energy for the duration of time for which the output
device is on.
This feature enables to acquire the electric energy needed during device
operation or energy per tact.

2 - 1
2 System configuration
QE81WH
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 QE81WH 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

2 - 2
2 System configuration
QE81WH
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 QE81WH 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
QE81WH 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
2 System configuration
QE81WH
(3) Applicable software package
QE81WH supported software packages are as follows:
(a) Software package for sequencer
Product name
Model name
Remarks
GX Works2
SW1DNC-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 QE81WH 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
QE81WH).
19H001
710A1234
Module version
Serial number

2 - 4
2 System configuration
QE81WH
(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
3 Specifications
QE81WH
Chapter 3: Specifications
3.1 General specifications
Item
Specifications
Phase wire system
single-phase 2-wire / single-phase 3-wire / three-phase 3-wire
Rating
Voltage
circuit
*1
single-phase
2-wire,
three-phase
3-wire
110 V AC , 220 V AC
single-phase
3-wire
110 V AC (1 - 2 line, 2 - 3 line) 220 V AC (1 - 3 line)
Current circuit
50 A, 100 A, 250 A, 400 A, 600 A AC
(Current sensor is used. Each value refers to the current at the primary side of
current sensor.)
5AAC
(Current sensor is used together with current transformer (CT), and the
primary-side current is configurable up to 6000 A.) *2
Frequency
50Hz to 60 Hz
Allowable tolerance of main module
(excluding current sensor) *3
Current : ±1.0 % (100 % of the rating)
Current demand *4 : ±1.0 % (100 % of the rating)
Voltage : ±1.0 % (100 % of the rating)
Electric power : ±1.0 % (100 % of the rating)
Electric power demand *4: ±1.0 % (100 % of the rating)
Reactive power : ±1.0 % (100 % of the rating)
Frequency : ±1.0 % (45 Hz to 65 Hz range of the rating)
Power factor : ±3.0 % (against the electric angle 90°)
Electric energy : ±2.0 %
(5 % to 100 % range of the rating, power factor = 1)
Reactive energy : ±2.5%
(10 % to 100 % range of the rating, power factor = 0)
Measurable circuit count
1 circuit
Data update cycle
250 ms *5
Response time
2 seconds or less
Backup for electric blackout
Backup is made using nonvolatile memory.
(Stored items: settings, the max./min. values and time of occurrence, electric
energy (consumption, regenerated), reactive energy (consumption lag), and
periodic electric energy)
I/O occupation
16 points (I/O assignment: intelligence 16 points)
* 1：110 V, 220 V direct connection is possible. For the circuit over this voltage, transformer (VT) is
necessary (Primary voltage of VT can be set up to 6600 V, and secondary voltage of VT can be set up
to 220V as optional setting). Star –delta connection and delta –star connection transformer instead of
VT cannot measure definitely to be out of phase. Please use a transformer of the same connection.
* 2：5 A primary current can be set when using the current sensor is as follows.
5A, 6A, 7.5A, 8A, 10A, 12A, 15A, 20A, 25A, 30A, 40A, 50A, 60A, 75A, 80A, 100A, 120A, 150A, 200A,
250A, 300A, 400A, 500A, 600A, 750A , 800A, 1000A, 1200A, 1500A, 1600A, 2000A, 2500A, 3000A,
4000A, 5000A, 6000A (Primary current of CT can be set up to 6000A in any . However, secondary
current of CT can not be set to other than 5A).
* 3：Please refer to 2 (1) as for the ratio error of the current sensor.
* 4：Demand shows the moving average of a set period.
* 5：Always accumulating the integrated values of Wh and varh. It can capture short-cycled load fluctuation.

3 - 2
3 Specifications
QE81WH
3.2 Electrical and mechanical specifications
Item
Specifications
Consumed VA
Voltage
circuit
Each phase 0.1 VA (at 110 V AC), Each phase 0.2 VA (at 220 V AC)
Current
circuit
Each phase 0.1 VA (secondary side of current sensor)
Internal current
consumption (5 V DC)
0.17 A
Operating temperature
0 °C to +55 °C (Average daily temperature +35 °C or below)
Operating humidity
5 % to 95 % RH (No condensation)
Storage temperature
-25 °C to +75 °C
Storage humidity
5 % to 95 % RH (No condensation)
Operating altitude
2000 m 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 Hz to 8.4 Hz
-
3.5 mm
XYZ
each
direction 10
times
8.4 Hz to
150 Hz
9.8 m/s2
-
Continuous
vibration
5 Hz to 8.4 Hz
-
1.75 mm
-
8.4 Hz to
150 Hz
4.9 m/s2
-
Impact resistance
Conforms to JIS B 3502, IEC 61131-2 (147m/s2, XYZ each direction 3 times)
Over voltage category *1
II or less
Pollution degree *2
2 or less
Equipment category
Class Ι
Applicable
wire
(Usable
electric
wire)
Voltage input
terminal
Single wire
AWG24 to AWG17
(φ0.5 mm to 1.2 mm)
Stranded wire *4
AWG20 to AWG16
(0.5 mm2to 1.3 mm2)
Current input
terminal *3
Single wire
AWG24 to AWG17
(φ0.5 mm to 1.2 mm)
Stranded wire *4
AWG20 to AWG16
(0.5 mm2to 1.3 mm2)
Tightening torque
Module-fixing screws (M3 screw) *5
0.36 N▪m to 0.48 N▪m
Commercial frequency
withstand voltage
Between voltage/current input terminals - FG terminal
2210 V AC
5 sec
Between voltage/current input terminals - sequencer power
source and GND terminals
2210 V AC
5 sec
Insulation resistance
5 MΩ or more (500 V DC) at locations above
Standard *6
EMC: EN61131-2:2007, EN61326-1:2013
LVD: EN61131-2:2007, EN61010-1:2010
UL Standards: UL508
c-UL Standards: CSA C22.2 No.142
KC Marking
Dimensions
27.4 mm (W) x 98 mm (H) x 90.5 mm (D) excluding protruding portions
Mass
0.1 kg
*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 the secondary terminal of current sensor (k, l) and the main module terminal
(1k, 1l, 3k, 3l), use twisted pair cable.

3 - 3
3 Specifications
QE81WH
*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.
*6. When combine this unit with a CT (Model: EMU2-CT5, EMU-CT50, EMU-CT100, EMU-CT250,
EMU-CT400-A, EMU-CT600-A), it becomes UL standard.

4 - 1
4 Functions
QE81WH
Chapter 4: Functions
4.1 List of functions
Functions of QE81WH are provided in Table 4.1-1
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 QE81WH.
Table 4.1-1 List of Functions
No. Function Descriptions
Reference
section
1 Measurement
It measures current, current demand, voltage, electric
power, electric power demand, Reactive power, power
factor, frequency, effective energy (consumption,
regeneration), reactive energy (consumption lag), and
sequentially stores the records into a buffer memory.
Section
4.2.1
2
Periodic electric
energy
The electric energy only for a period of time when a
certain output signal is ON will be stored in the buffer
memory.
Periodic energy 1 and 2 can be measured independently.
Section
4.2.2
3
Hold max./min.
values
For current demand, voltage, electric power demand, and
power factor, each maximum/minimum values and
date/time of occurrence are stored.
Section
4.2.3
4
Upper/lower limit
alarm monitoring
Of current demand, voltage, electric power demand, and
power factor, you can select two items for which their
upper/lower limit can be monitored.
If it exceeds the upper limit or goes below the lower limit,
the specified input signal is turned on.
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 input from voltage
and current (sensor).
Using this module, you can create a sequence, etc.
Section
4.2.5
6
Integrated value
set
Set the integrated value
(electric energy (consumption,
regeneration), reactive energy (consumption lag))
to an
arbitrary value.
It is used to clear integrated value.
Section
4.2.6

4 - 2
4 Functions
QE81WH
4.2 Functions in detail
4.2.1 Measuring functions
(1) Measured items
Measured items and measured ranges are described as follows:
Each measured item is stored in the buffer memory every 250 ms.
Measured items
Details
Current 1 - phase current
2 - phase current*1
3 - phase current*1
Average current
Current demand
* The average of fluctuation for the set period of
current demand time is indicated.
1 - phase current demand
2 - phase current demand*1
3 - phase current demand*1
Max. value
Min. value
Date of max. value occurrence
Date of min. value occurrence
Voltage 1 - 2 line voltage (voltage V12)
2 - 3 line voltage*1 (voltage V23)
3 - 1 line voltage*1 (voltage V31)
Average voltage
Max. value
Min. value
Date/time of max. value occurrence
Date/time of min. value occurrence
Electric power Present value
Electric power demand
* The average of fluctuation for the set period of
electric power demand time is indicated.
Present value
Max. value
Min. value
Date/time of max. value occurrence
Date/time of min. value occurrence
Reactive power Reactive power
Power factor Present value
Max. value
Min. value
Date/time of max. value occurrence
Date/time of min. value occurrence
Frequency Present value
Electric energy Electric energy (consumption)
Electric energy (regeneration)
Reactive energy Reactive energy (consumption lag)
Periodic electric energy *2 Periodic electric energy 1
Periodic electric energy 2
*1: If phase wire system is set to single-phase 2-wire, measurement will not be taken.