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Mitsubishi Electric MELSEC QE84WH User Manual
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Mitsubishi Electric MELSEC QE84WH User Manual

Mitsubishi Electric MELSEC QE84WH User Manual

Energy measuring module
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Mitsubishi Programmable Controller
Energy Measuring Module
User'
s Manual (Details)
QE84WH

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Summary of Contents for Mitsubishi Electric MELSEC QE84WH

  • Page 1 Mitsubishi Programmable Controller Energy Measuring Module User’ s Manual (Details) QE84WH...
  • Page 2 IB63720D ● SAFETY PRECAUTIONS ● (Read these precautions before using this product.) This manual contains important instructions for MELSEC-Q series QE84WH. 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.
  • Page 3 Caution Do not install the input signal wire together with the main circuit lines or power cables. Keep a distance as below. (Except for the terminal input part) Failure to do so may result in malfunction due to noise. Conditions Distance Below 600 V, or 600 A power lines 300 mm or more...
  • Page 4 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).
  • Page 5 [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. •...
  • Page 6 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. © 2012 MITSUBISHI ELECTRIC CORPORATION A - 5...
  • Page 7 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 Features ·························································································································· 1-1 Chapter 2: System Configuration 2-1 - 2-4 2.1 Applicable system ··············································································································...
  • Page 8 Chapter 8: Setting and procedure for operation 8-1 - 8-34 8.1 Precautions for handling ··································································································· 8-1 8.2 Procedure for operation ···································································································· 8-2 8.3 Name and function of each part ·························································································· 8-3 8.4 Attaching and removing the module ··················································································· 8-6 8.5 Wiring ·························································································································· 8-8 8.6 Setting from GX Works2 ·································································································...
  • Page 9 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).
  • Page 10 Note A - 9...
  • Page 11 1 Overview QE84WH Chapter 1: Overview This manual explains specifications, handling methods, and programming of Energy Measuring Module QE84WH (hereinafter, abbreviated as QE84WH) supporting MELSEC-Q series. 1.1 Features (1) This Energy Measuring Module can measure four channels of various types of electric quantity.
  • Page 12 2 System configuration QE84WH 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 QE84WH can be attached and the number of attachable pieces are shown below.
  • Page 13 2 System configuration QE84WH Attachable CPU Module Remarks Attachable quantity. CPU Type CPU Model Q03UDVCPU Q04UDVCPU Q06UDVCPU Q13UDVCPU Programmable High-speed Q26UDVCPU controller Universal model Q04UDPVCPU QCPU Q06UDPVCPU Q13UDPVCPU Q26UDPVCPU Q06CCPU-V Q06CCPU-V-B Q12DCCPU-V C Controller module 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 QE84WH and the number of network modules to be mounted.
  • Page 14 2 System configuration QE84WH (3) Applicable software package QE84WH supported software packages are as follows: (a) Software package for sequencer Product name Model name Remarks iQ Platform compatible programmable GX Works2 SW1DNC-GXW2 controller engineering software MELSEC sequencer programming software GX Developer SWnD5C-GPPW “n”...
  • Page 15 2 System configuration QE84WH (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. Function version Serial number (b) Checking on the System monitor dialog box (Product Information List)
  • Page 16 3 Specifications QE84WH 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 single-phase 100 V to 220 V AC circuit 2-wire, three-phase 3-wire single-phase 110 V AC (1 - 2 line, 2 - 3 line) 220 V AC (1 - 3 line) 3-wire Current circuit 50 A, 100 A, 250 A, 400 A, 600 A AC...
  • Page 17 3 Specifications QE84WH 3.2 Electrical and mechanical specifications Item Specifications Consumed VA Voltage Each phase 0.1 VA (at 110 V AC), Each phase 0.2 VA (at 220 V AC) circuit Current Each phase 0.1 VA (secondary side of current sensor) circuit Internal current 0.46 A...
  • Page 18 3 Specifications QE84WH *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 .
  • Page 19 4 Functions QE84WH Chapter 4: Functions 4.1 List of functions Functions of QE84WH 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 QE84WH. Table 4.1-1 List of Functions Reference Function...
  • Page 20 4 Functions QE84WH 4.2 Functions in detail 4.2.1 Measuring functions (1) Measured items Measured items of each channel are described as follows: Each measured item is stored in the buffer memory every 500 ms. Measured items Details Current 1 - phase current 2 - phase current 3 - phase current average current...
  • Page 21 4 Functions QE84WH (2) Total, maximum, and minimum values The following describes how to calculate the maximum, minimum, and total values. Item Phase wire system Formula Average single-phase 2-wire Average current = 1-phase current current single-phase 3-wire Average current = (1-phase current + 3-phase current) / 2 three-phase 3-wire Average single-phase 2-wire...
  • Page 22 4 Functions QE84WH (3) Resolution of measured data Resolution of measured data according to the rating (phase wire system, primary voltage, and primary current) is described as follows. 1) Current, current demand Rated primary current setting Multiplier Resolution* 2 digits after the 5 A to 30 A 0.01 A decimal point...
  • Page 23 4 Functions QE84WH 6) Electric energy, Reactive energy, periodic electric energy Full load power W Multiplier Resolution* Range [kWh,kvarh] 5 digits after the 0.00001 W < 12 kW 0.00001 to 9999.99999 Ⅰ. decimal point kWh, kvarh 4 digits after the 0.0001 12kW ≤...
  • Page 24 4 Functions QE84WH (b) single-phase 3-wire system Primary voltage [V] 一次電圧[V] Ⅰ W,var :3 digits after the decimal point W,var ：小数3桁 Wh,varh：小数2桁 Wh,varh:2 digits after the decimal point Ⅱ W,var :2 digits after the decimal point W,var ：小数2桁 Wh,varh :1 digit after the decimal point Wh,varh：小数1桁...
  • Page 25 4 Functions QE84WH (c) three-phase 3-wire system Primary voltage[V] 1100 2200 3300 6600 Ⅰ W,var :3 digits after the decimal point Wh,varh :2 digits after the decimal point Ⅱ W,var :2 digits after the decimal point Wh,varh :1 digit after the decimal point Ⅲ...
  • Page 26 4 Functions QE84WH (4) Restrictions for measuring data - Measurement cannot be performed immediately after the power loading to the sequencer system (Module ready signal 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 the module.
  • Page 27 4 Functions QE84WH 4.2.2 Measuring function for periodic electric energy This function is to measure electric energy for a certain period, and stores it into the buffer memory. It can be used to measure electric energy for a certain tact or energy (standby power) when the facility or equipment is not in operation.
  • Page 28 4 Functions QE84WH (2) Basic procedure 1) Measuring periodic electric energy (a) Check that CH1 periodic electric energy 1 measurement flag (Yn5) is OFF. (b) Check CH1 periodic electric energy 1 (Un\G114, 115). (c) When starting measurement, set CH1 periodic electric energy 1 measurement flag (Yn5) to ON.
  • Page 29 4 Functions QE84WH (3) Sample use case 1) Procedure for continuously measuring periodic electric energy If you turn CH1 periodic electric energy 1 measurement flag to ON only for the extent of time you want to measure, this module accumulates the power starting at the previously measured amount.
  • Page 30 4 Functions QE84WH 4.2.3 Max./min. value hold function It memorizes the max./min. value for each measured item, and retains it until the max./min. value clear is performed. (1) Max./min. value memory 1) It memorizes the max. and min. values of the following measured items of each channel. - Current demand - Voltage - Electric power demand...
  • Page 31 4 Functions QE84WH 4.2.4 Upper/lower limit alarm monitoring function You can set an upper and lower limit alarm for maximum two points for each channel and implement a monitoring function for them. During the alarm monitoring, it can monitor the input signal to check for the occurrence.
  • Page 32 4 Functions QE84WH 2) Setting procedures are as follows: (a) Check that Operating condition setting request (Yn2) is OFF. (b) Set the alarm item, alarm value, alarm reset method, and alarm delay time in the buffer memory. For the address of buffer memory for alarm 1 and alarm 2, refer to Chapter 6. (c) Set Operating condition setting request (Yn2) to ON.
  • Page 33 4 Functions QE84WH 2) When the alarm reset method is set to "1: auto reset" (example of the upper limit monitoring with CH1 alarm 1) (a) If the measured value that was set with the alarm 1 item exceeds the upper limit and the situation continues and remains for the alarm 1 delay time, CH1 alarm 1 flag (Xn9) will turn ON.
  • Page 34 4 Functions QE84WH (3) How to reset Alarm flag 1) When 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.
  • Page 35 4 Functions QE84WH 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 module switch setting, you can start the test mode to output the fixed value.
  • Page 36 4 Functions QE84WH 4.2.6 Integrated value set function This is a function that can set the integrated value (electric energy (consumption, regeneration), reactive energy (consumption lag)) to an arbitrary value. It is used to clear integrated value. (1) Setting procedure (a) Set integrated value setting target (Un\G51) in the buffer memory.
  • Page 37 5 I/O signals to CPU module QE84WH Chapter 5: I/O signals for the CPU module 5.1 List of I/O signals I/O signals of QE84WH are listed in Table 5.1-1. Table 5.1-1 List of I/O signals Input signal (signal direction from QE84WH to CPU module) Output signal (signal direction from CPU module to QE84WH) Device # Signal name...
  • Page 38 5 I/O signal to CPU module QE84WH 5.2 Details of I/O signals Detailed explanation about I/O signals of QE84WH 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.
  • Page 39 5 I/O signal to CPU module QE84WH (3) Operating condition setting completion flag (Xn2) (a) When Operating condition setting request (Yn2) is turned ON, the following settings are changed and this signal (Xn2) turns ON. - Phase wire system (Un\G0) - Primary voltage (Un\G1) - Primary current (Un\G2/1002/2002/3002) - Current demand time (Un\G3/1003/2003/3003)
  • Page 40 5 I/O signal to CPU module QE84WH (4) Integrated value set completion flag (Xn3) (a) When Integrated value set request (Yn3) is turned ON and preset of each integrated value such as electric energy (consumption), electric energy (regeneration), and reactive energy (consumption delay) is completed, this signal (Xn3) turns ON.
  • Page 41 5 I/O signal to CPU module QE84WH (10) CH1 alarm 1 flag (Xn9) (a) If the measured value of CH1 alarm 1 item (Un\G11) exceeds the upper limit (or if it goes below the lower limit in the case of the lower alarm), after the elapse of CH1 alarm 1 delay time (Un\G15), this signal (Xn9) turns ON.
  • Page 42 5 I/O signal to CPU module QE84WH 5.2.2 Output signals (1) Operating condition setting request (Yn2) (a) When switching this request (Yn2) from the OFF status to the ON status, the following operating conditions will be set. - Phase wire system (Un\G0) - Primary voltage (Un\G1) - Primary current (Un\G2/1002/2002/3002) - Current demand time (Un\G3/1003/2003/3003)
  • Page 43 5 I/O signal to CPU module QE84WH (4) CH1 periodic electric energy 1 measurement flag (Yn5) (a) When switching this signal (Yn5) from the ON status to the OFF status, CH1 periodic electric energy 1 is measured and stored in the buffer memory. (b) When this signal (Yn5) is turned OFF, CH1 periodic electric energy 1 data completion flag (Xn5) turns ON at the time that CH1 periodic electric energy 1 is checked for that period, and then CH1 periodic electric energy 1 is retained.
  • Page 44 5 I/O signal to CPU module QE84WH (10) Error clear request (Yn1F) (a) When switching this request (Yn1F) from the OFF status to the ON status while an outside-set-value error is present, Error flag (Xn1F) turns OFF, and the latest error code in the buffer memory (Un\G4500) will be cleared.
  • Page 45 6 Buffer memory QE84WH Chapter 6: Buffer memory 6.1 Buffer memory assignment The following describes buffer memory assignment. Point In the buffer memory, do not write data to the "system area" or area where data writing data from sequence programs is disabled. Doing so may cause malfunction.
  • Page 46 6 Buffer memory QE84WH (2) Measurement sections (CH1: Un\G100 to Un\G999, CH2: Un\G1100 to Un\G1999, CH3: Un\G2100 to Un\G2999, CH4: Un\G3100 to Un\G3999) Table 6.1-2 Measurement sections 1/3 Address(Decimal) Data Default Back Output value during the test mode*2 Item Description Type value up*1...
  • Page 47 6 Buffer memory QE84WH Table 6.1-2 Measurement sections 2/3 Address(Decimal) Data Default Output value during the test mode*2 Item Description R/W Back up*1 Type value Voltage 1300 2300 3300 Multiplier of voltage ― 1301 2301 3301 System area ― ― ―...
  • Page 48 6 Buffer memory QE84WH Table 6.1-2 Measurement sections 3/3 Address(Decimal) Data Default Back Output value during the test mode*2 Item Description Type value up*1 Reactive 1500 2500 3500 Multiplier of reactive power ― ― power 1501 2501 3501 System area ―...
  • Page 49 6 Buffer memory QE84WH (3) Common sections (Un\G4500 to Un\G4999) Table 6.1-3 Common sections (Un\G4500 to Un\G4999) Address Output value during the Data Default Back Item Description (Decimal) test mode*2 Type value up*1 CH1 CH2 CH3 Error 4500 Latest error code ―...
  • Page 50 6 Buffer memory QE84WH 6.2 Configurable sections (CH1: Un \ G0 to Un \ G99, CH2: Un \ G1000 to Un \ G1099, CH3: Un \ G2000 to Un \ G2099, CH4: Un \ G3000 to Un \ G3099) 6.2.1 Phase wire system (Un \ G0) Phase wire system for target electric circuits is configured below.
  • Page 51 6 Buffer memory QE84WH 6.2.2 Primary voltage (Un \ G1), Primary voltage of VT (Un \ G5), Secondary voltage of VT (Un \ G6) ・Primary voltage (Un\G1): set the primary voltage of the target electric circuit. This setting is common to all channels.
  • Page 52 6 Buffer memory QE84WH 6.2.3 CH1 primary current (Un \ G2), CH1 primary current of CT (Un \ G7) ・CH1 primary current (Un\G2): set the primary current of the target electric circuit. ・CH1 primary current of CT (Un\G7): when use for primary current of current transformer that is not in the CH1 primary current (Un\G2) setting, set the current of the primary side of current transformer.
  • Page 53 6 Buffer memory QE84WH CH1 primary current (Un\G2) CH1 primary current of Current sensor CT (Un\G7) Setting value Description 100/5 A 120/5 A 150/5 A 200/5 A 250/5 A 300/5 A 400/5 A 500/5 A 600/5 A 750/5 A 0 to 6000 EMU2-CT5, 800/5 A (However, this setting is...
  • Page 54 6 Buffer memory QE84WH 6.2.5 CH1 electric power demand time (Un \ G4) Set a time duration for which the average fluctuation of electric power demand is measured from the measured power value. If electric power demand time is set short, the response to change of power will be quick; however, the fluctuation range may be too large.
  • Page 55 6 Buffer memory QE84WH 6.2.6 CH1 alarm 1 item (Un \ G11), CH1 alarm 2 item (Un \ G21) Set which measuring item will be monitored for the upper/lower limit alarm. Alarm 1 and 2 operate independently. (1) Setting procedure (a) Set the item for alarm 1 and 2 in the buffer memory.
  • Page 56 6 Buffer memory QE84WH *2 The idea of upper and lower for PF upper /lower limit judgment is shown below. -0.1 -0.2 -99.8 -99.9 100.0 99.9 99.8 下 上 Lower Upper (進み) (遅れ) (Forward) (Delayed) (c) Turn Operating condition setting request (Yn2) from OFF to ON to enable the setting. (Refer to 5.2.2 (1).) (2) Default value It is set to 0 (no monitoring).
  • Page 57 6 Buffer memory QE84WH 6.2.8 CH1 alarm 1 reset method (Un \ G14), CH1 alarm 2 reset method (Un \ G24) Set the reset method of the alarm1 and alarm 2. For differences in behavior of alarm monitoring for different reset methods, refer to 4.2.4 (2). Setting procedure (a) Set the reset method for alarm 1 and 2 in the buffer memory.
  • Page 58 6 Buffer memory QE84WH 6.2.10 Integrated value setting target (Un \ G51), integrated value setting value (Un \ G52, 53) (1) Setting procedure (a) Set integrated value setting target (Un\G51) in the buffer memory. Setting range is as follows: Setting value Description All CHs No set...
  • Page 59 6 Buffer memory QE84WH 6.2.11 Max./min. values clear item (Un¥G56) Select the max./min. values you want to clear. ・ Regular operating mode (1) Setting procedure (a) Set max./min values clear item (Un¥G56) in the buffer memory. Setting range is as follows: Setting value Description No clear...
  • Page 60 6 Buffer memory QE84WH 6.2.12 Output period of data acquisition clock (Un \ G60, 61) Set the output period of Data acquisition clock (Xn1). This setting is common to all channels. ・Data acquisition clock (Regular operating mode) (1) Setting procedure (a) Set output period of data acquisition clock (Un \ G60, 61) in the buffer memory.
  • Page 61 6 Buffer memory QE84WH 6.3 Measurement sections (CH1: Un \ G100 to Un \ G999, CH2: Un \ G1100 to Un \ G1999, CH3: Un \ G2100 to Un \ G2999, CH4: Un \ G3100 to Un \ G3999) 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.
  • Page 62 6 Buffer memory QE84WH 6.3.3 CH1 reactive energy (consumption lag) (Un \ G106, 107) Delayed consumption of the reactive energy is stored. (1) Details of stored data (a) Storage format Data are stored as double-word 32-bit signed binary in the buffer memory. - Data range: 0 to 999999999 When the stored data exceeds 999999999, stored data turns to 0 and continues measuring.
  • Page 63 6 Buffer memory QE84WH 6.3.5 Multiplier of CH1 electric current (Un \ G200) The multiplier of the electric current is stored. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory. - Data range: -3 (fixed) (b) Update timing Because it is fixed at -3, there is no update.
  • Page 64 6 Buffer memory QE84WH 6.3.8 CH1 average current (Un \ G218, 219) Stores the average current. For procedure for storing the average current using phase wire system, refer to section 4.2.1 (2). (1) Details of stored data (a) Storage format Data are stored as double-word 32-bit signed binary in the buffer memory.
  • Page 65 6 Buffer memory QE84WH 6.3.10 Year of time of CH1 max. current demand (Un \ G222), month and day of time of CH1 max. current demand (Un \ G223), hour and minute of time of CH1 max. current demand (Un \ G224), second and day of the week of time of CH1 max.
  • Page 66 6 Buffer memory QE84WH 6.3.11 Multiplier of CH1 the electric voltage (Un \ G300) The multiplier of the electric voltage is stored. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory. - Data range: -3 (fixed) (b) Update timing Because it is fixed at -3, there is no update.
  • Page 67 6 Buffer memory QE84WH 6.3.14 CH1 maximum voltage (Un \ G320, 321), CH1 minimum voltage (Un \ G326, 327) Stores the max./min. values of the voltage among in-between wires. For procedure for storing the max./min. voltage using phase wire system, refer to section 4.2.1 (2). (1) Details of stored data (a) Storage format Data are stored as double-word 32-bit signed binary in the buffer memory.
  • Page 68 6 Buffer memory QE84WH 6.3.15 Year of time of CH1 the max. voltage (Un \ G322), month and day of time of CH1 max. voltage (Un \ G323), hour and minute of time of CH1 max. voltage (Un \ G324), second and day of the week of time of CH1 max.
  • Page 69 6 Buffer memory QE84WH 6.3.16 Multiplier of CH1 power (Un \ G400) The multiplier of power is stored. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory. - Data range: -3 (fixed) (b) Update timing Because it is fixed at -3, there is no update.
  • Page 70 6 Buffer memory QE84WH 6.3.18 CH1 electric power demand (Un \ G404,405) Stores the electric power that is measured based on the moving average for the duration of time configured in CH1 electric power demand time (Un\G4). (1) Details of stored data (a) Storage format Data are stored as double-word 32-bit signed binary in the buffer memory.
  • Page 71 6 Buffer memory QE84WH 6.3.20 Year of time of CH1 max. electric power demand (Un \ G422), month and day of time of CH1 max. electric power demand (Un \ G423), hour and minute of time of CH1 max. electric power demand (Un \ G424), second and day of the week of time of CH1 max.
  • Page 72 6 Buffer memory QE84WH 6.3.21 Multiplier of CH1 reactive power (Un \ G500) The multiplier of reactive power is stored. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory. - Data range: -3 (fixed) (b) Update timing Because it is fixed at -3, there is no update.
  • Page 73 6 Buffer memory QE84WH 6.3.24 CH1 power factor (Un \ G702, 703) Stores the power factor. (1) Details of stored data (a) Storage format Data are stored as double-word 32-bit signed binary in the buffer memory. - Data range:-100000 to 100000 (-100.000 to 100.000%) *Restrictions for measured data including resolution and measuring range, refer to section 4.2.1.
  • Page 74 6 Buffer memory QE84WH 6.3.26 Year of time of CH1 max. power factor (Un \ G722), month and day of time of CH1 max. power factor (Un \ G723), hour and minute of time of CH1 max. power factor (Un \ G724), second and day of the week of time of CH1 max.
  • Page 75 6 Buffer memory QE84WH 6.3.27 Multiplier of CH1 frequency (Un \ G800) The multiplier of the frequency is stored. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory. - Data range: -3 (fixed) (b) Update timing Because it is fixed at -3, there is no update.
  • Page 76 6 Buffer memory QE84WH 6.4 Common sections (Un \ G4500 to Un \ G4999) 6.4.1 Latest error code (Un \ G4500) The latest error code that is detected with this module will be stored. *For the list of error codes, refer to section 10.1. (1) Details of stored data (a) Storage format Data are stored as 16-bit signed binary in the buffer memory.
  • Page 77 6 Buffer memory QE84WH 6.4.3 State of measuring mode (Un¥G4550) Store the state of measuring mode. (a) Storage format Measuring mode ：0 Current measuring mode ：1 Test mode ：2 Update timing It will be updated at the time of changing the setting the intelligent function of the module switch.
  • Page 78 7 Current measuring mode QE84WH Chapter 7: Current measuring mode 7.1 Measuring functions in the current measuring mode (1) Measured items By activating the current measuring mode, you can measure only the current data shown below of up to eight circuits. Each measured item is stored in the buffer memory every 100 ms.
  • Page 79 7 Current measuring mode QE84WH 7.3 List of I/O signals I/O signals used in the current measuring mode are listed in Table 7.3-1. Table 7.3-1 List of I/O signals Input signal (signal direction from QE84WH to CPU Output signal (signal direction from CPU module to module) QE84WH) Device #...
  • Page 80 7 Current measuring mode QE84WH 7.4 Buffer memory The following describes buffer memory assignment in the current measuring mode. Table 7.4-1 Buffer memory Address(Decimal) Data Back Output value during the test mode*2 Item Description Type value up*2 4050 4100 4150 4200 4250 4300 4350 Setting System area ―...
  • Page 81 7 Current measuring mode QE84WH 7.5Names and functions of LEDs The following describes names and functions of LEDs in the current measuring mode. Table 7.5-1 Names and functions of LEDs (in the current measuring mode) Name Color Role ON/OFF condition 0 LED Green Displays the operation...
  • Page 82 7 Current measuring mode QE84WH 7.6 Names of signals of terminal block The following describes names of signals of terminal block in the current measuring mode. Table 7.6-1 Names of signals of terminal block CH1 current input terminal (power source side) CH1 current input terminal (load side) CH2 current input terminal (power source side) CH2 current input terminal (load side)
  • Page 83 7 Current measuring mode QE84WH 7.7 Wiring Follow the wiring diagram for external connection in the current measuring mode. (1) In the case using 5A current sensor. (a) Case of using EMU2-CT5 Power source side (1) (0) (1) (0) 5A current sensor cable EMU2-CB-Q5B 5A current sensor EMU2-CT5...
  • Page 84 7 Current measuring mode QE84WH (2) In the case using split-type current sensor. EMU-CT*** model Power split current sensor source (50/100/250/400/600) side EMU-CT***-A model split current sensor (50/100/250/400/600) Load 8 Load 1 Figure7.7(2) Wiring in the using split current sensor...
  • Page 85 7 Current measuring mode QE84WH 7.8 Setting from GX Works2 This section explains setting from GX Works2 necessary to use QE84WH. 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.
  • Page 86 7 Current measuring mode QE84WH 7.8.2 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] Figure 7.8.2-1 Dialog box to set the intelligent function of the module switch Table 7.8.2-1 Setting the intelligent function of the module switch Item Description...
  • Page 87 7 Current measuring mode QE84WH 7.8.3 Parameter Setting Set the parameters. Setting parameters on the screen omits the parameter setting in a program. (1)Setting procedure Open the “Parameter” window. Project window→[intelligent Function Module]→Module name→[Parameter] Figure 7.8.3-1 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.
  • Page 88 7 Current measuring mode QE84WH Item Setting value Reference 0:Any setting 516:100/5A 1:50A 517:120/5A 2:100A 518:150/5A 3:250A 519:200/5A 4:400A 520:250/5A 5:600A 521:300/5A 501:5/5A 522:400/5A 502:6/5A 523:500/5A 503:7.5/5A 524:600/5A 504:8/5A 525:750/5A Primary current 505:10/5A 526:800/5A Section 6.2.3 Rate setting 506:12/5A 527:1000/5A 507:15/5A 528:1200/5A 508:20/5A...
  • Page 89 7 Current measuring mode QE84WH 7.8.4 Auto Refresh This function transfers data in the buffer memory to specified devices. Programming of reading/writing data is unnecessary. (1)Setting procedure 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.
  • Page 90 7 Current measuring mode QE84WH 7.8.5 Debugging program QE84WH 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.
  • Page 91 7 Current measuring mode QE84WH 7.9 Setting from GX Developer This section explains setting from GX Developer necessary to use QE84WH. Before performing this setting, install GX Developer and connect the Management CPU with the PC using a USB cable. For details, refer to the manual of CPU module.
  • Page 92 7 Current measuring mode QE84WH 7.9.2 Setting the intelligent function of the module switch (1) In the “I/O assignment” of 7.9.1, 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 switches 4 and 5 is used for this purpose.
  • Page 93 7 Current measuring mode QE84WH 7.9.3 Initial setting This section explains the setting of the operating condition for phase wire system, primary voltage, primary current, current demand time, voltage demand time, primary voltage of VT, secondary voltage of VT, and primary current of CT that are required for measurement. Once each value is set, these values will be stored in the nonvolatile memory of the module, so that reconfiguration is not needed.
  • Page 94 7 Current measuring mode QE84WH (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.
  • Page 95 7 Current measuring mode QE84WH 7.9.4 Debugging program QE84WH 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.
  • Page 96 8 Setting and procedure for operation QE84WH Chapter 8: Setting and procedure for operation 8.1 Precautions for handling (1) Do not drop or apply strong shock to the module case. (2) Do not remove the printed-circuit board of the module from the case. Doing so may cause failure.
  • Page 97 8 Setting and procedure for operation QE84WH 8.2 Procedure for operation Start Attaching the module Attach QE84WH to the specified base unit. (Refer to section 8.4.) Wiring Wire QE84WH for external device. (Refer to section 8.5.) Setting the intelligent function of module switch, Initial setting Perform settings using GX Works2 (Refer to section 8.6.)
  • Page 98 8 Setting and procedure for operation QE84WH 8.3 Name and function of each part Names and functions of parts of QE84WH are provided below. (1)LED Operating status this module is displayed. (Refer to Table 7.5-1, Table 8.3-1.) (2)Current input terminals Connect the current wire of the measuring circuit with the secondary...
  • Page 99 8 Setting and procedure for operation QE84WH (1) Names and functions of LEDs The following describes names and functions of LEDs. Table 8.3-1 Names and functions of LEDs Name Color Role ON/OFF condition 0 LED Green Displays the operation status of this ON: Normal operation module.
  • Page 100 8 Setting and procedure for operation QE84WH (2) Names of signals of terminal block The following describes names of signals of terminal block. Table8.3-2 Names of signals of terminal block Terminal Name of terminal symbol 1ｋ 1-phase current input terminal (power source side) 1ｌ...
  • Page 101 8 Setting and procedure for operation QE84WH 8.4 Attaching and removing the module 8.4.1 How to attach to the base unit Base unit Insert it securely so that the protruding portion for fixing the module* does not come off of the module-fixing hole.
  • Page 102 8 Setting and procedure for operation QE84WH 8.4.2 How to detach it from the base unit Hold the module with both hand, and push the hook for fixing the module located on top of the module until it stops. Push Lift it up While pushing the hook for fixing the module...
  • Page 103 8 Setting and procedure for operation QE84WH 8.5 Wiring 8.5.1 Precautions for wiring (1) Connect cables. For connecting voltage transformer and current transformer, refer to the corresponding wiring diagram. (2) For wiring, check with the wiring diagram and check phase wire system for the connecting circuit.
  • Page 104 8 Setting and procedure for operation QE84WH 8.5.2 How to connect wires (1) Follow the wiring diagram for external connection to QE84WH. (2) Use appropriate electric wires as described below. <Voltage input terminals> 1) Stripping length of the wire to be used has to be 7 mm. Check the stripping length using the strip gauge of QE84WH main module.
  • Page 105 8 Setting and procedure for operation QE84WH 8.5.3 How to wire Follow the wiring diagram (Figure 8.5.3(1)-(a) to 8.5.3(2)-(b)) for external connection of QE84WH. (1) In the case using 5A current sensor. (a) Case of using EMU2-CT5 Power Load source side side Current...
  • Page 106 8 Setting and procedure for operation QE84WH (2) In the case using split-type current sensor. (a) Case of Three-phase 3-wire system Power Load source side side EMU-CT*** model Split-type current sensor (50/100/250/400/600) EMU-CT***-A model Split-type current sensor (50/100/250/400/600) View A Load 4 Load 1 View A...
  • Page 107 8 Setting and procedure for operation QE84WH (c) Case of Single-phase 3-wire system Power Load source side side EMU-CT*** model split current sensor (50/100/250/400/600) EMU-CT***-A model View A split current sensor (50/100/250/400/600) Load 1 Load 4 View A Figure 8.5.3(2)-(c) In the case of Single-phase 3-wire system 8 - 12...
  • Page 108 8 Setting and procedure for operation QE84WH 8.5.3.1 Current circuit connection A dedicated current sensor (EMU-CT ***, EMU-CT ***-A, EMU2-CT5) is required to connect the current circuit. ■ How to attach EMU-CT5/CT50/CT100/CT250-A 1) Press the locking claw of the moving core, please open the moving core by removing the engagement (Figure 1).
  • Page 109 8 Setting and procedure for operation QE84WH ■ How to attach EMU-CT400/CT600-A 1) Press the locking claw of the moving core, please open the moving core by removing the engagement (Figure 1). At this time, the hinge cover opens automatically. Before inserting the cable, check the symbols K and L to fit the current sensor in the correct direction.
  • Page 110 8 Setting and procedure for operation QE84WH ■ How to attach EMU-CT50/CT100/CT250 Follow the procedure below to attach to the cable of the target Protective cover circuit. 1) Open the movable core, as shown in the figure on the right. Lift slowly the hooks located on both sides of the movable core, and detach them from the stopper.
  • Page 111 8 Setting and procedure for operation QE84WH ■ How to attach EMU-CT400/CT600 Follow the procedure below to attach the cable to the target circuit. 1) Release the band 1) to the arrow direction (top), and Core cover detach the core cover. 2) Remove the terminal cover, and shift the secondary short switch into “short”.
  • Page 112 8 Setting and procedure for operation QE84WH ■ How to attach EMU2-CT5 - Transfix EMU2-CT5 current sensor to the secondary-side wire of current transformer (/5A rated). Make sure to use it in a correct combination with 5 A current sensor conversion cable: EMU2-CB-Q5B - EMU2-CT5 has polarities.
  • Page 113 8 Setting and procedure for operation QE84WH ■ When wiring single-phase 2-wire circuit As shown below, L3 remove connector , and connector with insulating 5 A current sensor is not used L3. tape. Insulating tape EMU2-CT5 ■ Extending the cable of 5 A current sensor If the cable from current sensor is too short, you can extend it by using an extension cable as shown below.
  • Page 114 8 Setting and procedure for operation QE84WH 8.5.3.2 Voltage circuit connection  If more than 220 V circuit is used, make sure that use a transformer.  The transformer which has primary voltage of VT less than 6600V and secondary voltage of VT not more than 220 V can be used.
  • Page 115 8 Setting and procedure for operation QE84WH 8.6 Setting from GX Works2 This section explains setting from GX Works2 necessary to use QE84WH. 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.
  • Page 116 8 Setting and procedure for operation QE84WH 8.6.2 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] Figure 8.6.2-1 Dialog box to set the intelligent function of the module switch Table 8.6.2-1 Setting the intelligent function of the module switch Item Description...
  • Page 117 8 Setting and procedure for operation QE84WH 8.6.3 Parameter Setting Set the parameters. Setting parameters on the screen omits the parameter setting in a program. (1)Setting procedure Open the “Parameter” window. Project window→[intelligent Function Module]→Module name→[Parameter] Figure 8.6.3-1 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.
  • Page 118 8 Setting and procedure for operation QE84WH Setting value Item Reference 1:single-phase 2-wire 2:single-phase 3-wire Phase wire system Section 6.2.1 3:three-phase 3-wire 0:Any setting 1:110V 2:220V 3:220/110V 4:440/110V Primary voltage Section 6.2.2 5:690/110V 6:1100/110V 7:2200/110V 8:3300/110V 9:6600/110V 0 V to 6600 V Primary voltage of VT Section 6.2.2 0 V to 220 V...
  • Page 119 8 Setting and procedure for operation QE84WH 8.6.4 Auto Refresh This function transfers data in the buffer memory to specified devices. Programming of reading/writing data is unnecessary. (1)Setting procedure 1) Start “Auto Refresh” . Project window→[intelligent Function Module]→Module name→[Auto Refresh] 2) Start “Auto Refresh”...
  • Page 120 8 Setting and procedure for operation QE84WH 8.6.5 Setting function for integrated value This function is to set integrated value (electric energy (consumption, regeneration) and reactive energy (consumption lag)) to any value. If you want to clear integrated value, set it to 0. (1)Setting procedure 1) Start “Intelligent unit monitor”...
  • Page 121 8 Setting and procedure for operation QE84WH 4) After checking that the Integrated value setting completion flag (Xn3) is in the ON status, turn off the integrated value setting request (Yn3). The integrated value setting completion flag (Xn3) is OFF, after detect the status is OFF. After detecting Integrated value setting request (Yn3) is in the OFF status, Integrated value setting completion flag (Xn3) turns to OFF.
  • Page 122 8 Setting and procedure for operation QE84WH 8.6.6 Debugging program QE84WH 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.
  • Page 123 8 Setting and procedure for operation QE84WH 8.7 Setting from GX Developer This section explains setting from GX Developer necessary to use QE84WH. Before performing this setting, install GX Developer and connect the Management CPU with the PC using a USB cable. For details, refer to the manual of CPU module.
  • Page 124 8 Setting and procedure for operation QE84WH 8.7.2 Setting the intelligent function of the module switch (1) In the “I/O assignment” of 8.7.1, 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;...
  • Page 125 8 Setting and procedure for operation QE84WH 8.7.3 Initial setting This section explains the setting of the operating condition for phase wire system, primary voltage, primary current, current demand time, and voltage demand time, primary voltage of VT, secondary voltage of VT, and primary current of CT that are required for measurement. Once each value is set, these values will be stored in the nonvolatile memory of the module, so that reconfiguration is not needed.
  • Page 126 8 Setting and procedure for operation QE84WH (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.
  • Page 127 8 Setting and procedure for operation QE84WH 8.7.4 Integrated value setting This function is to set integrated value ( electric energy ( consumption, regeneration ) and reactive energy (consumption lag) ) to any value. If you want to clear integrated value, set it to 0. (1) Check the current setting 1) From the “Online”...
  • Page 128 8 Setting and procedure for operation QE84WH (2) Setting function for integrated value This function is to set integrated value (electric energy (consumption, regeneration) and reactive energy (consumption lag)) to any value. If you want to clear integrated value, set it to 0. 1) In the dialog box to monitor all buffer memories, click the Device test button to display the Device test dialog box.
  • Page 129 8 Setting and procedure for operation QE84WH 8.7.5 Debugging program QE84WH 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.
  • Page 130 9 Programing QE84WH Chapter 9: Programming This chapter explains about programming for QE84WH. 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 9.1-1 to create a sample program using QE84WH.
  • Page 131 9 Programing QE84WH 9.2 System configuration and usage conditions for sample program A sample program under the following system and the usage condition is shown below. (1) System configuration QY40(Y30～Y3F) QCPU QX40(X20～X2F) QE84WH(X/Y0～X/Y1F) Figure 9.2-1 Sample system configuration using a sample program (2) Setting conditions for the intelligent function of the module switch Setting is as follows: Table 9.2-1 Setting the intelligent function of the module switch...
  • Page 132 9 Programing QE84WH Before creating a program, attach QE84WH to the base unit, and connect it to external devices. Electric current sensor: EMU-CT250 Power Load source side side View A Load 1 Load 4 View A Figure 9.2-2 Example of wiring using a sample program 9 - 3...
  • Page 133 9 Programing QE84WH 9.2.1 Sample program when make the initial setting using GX Works2 or GX Developer. (1) List of devices Table 9.2.1-1 List of devices Device Function Device that stores latest error code Module ready Operating condition setting completion flag CH1 Alarm 1 flag CH1 Alarm 2 flag QE84WH...
  • Page 134 9 Programing QE84WH (3) Sample program Figure 9.2.1-1 Example of a sample program 9 - 5...
  • Page 135 9 Programing QE84WH 9.2.2 Sample program when make the initial setting using sequence program. (1) List of devices Table 9.2.2-1 List of devices Device Function D0, D1 Device that stores Multiplier of electric energy D2, D3 Device that stores electric energy (consumption) D4, D5 Periodic electric energy 1 D6, D7...
  • Page 136 9 Programing QE84WH (2) List of buffer memories to be used Table 9.2.2-2 List of buffer memories to be used Device Description Setting Remarks value U0 \ G0 Phase wire method Three-phase 3-wire U0 \ G1 Primary voltage 220 V U0 \ G2 Primary current 250 A...
  • Page 137 9 Programing QE84WH (3) Sample program 1. Initial setting program for QE84WH Flag for Primary Module complete READY voltage operating condition setting Primary current Current demand time Basic operating Electric condition setting Power demand time Primary voltage of Secondary voltage of Primary current of Alarm 1 item...
  • Page 138 9 Programing QE84WH 2. Measured data acquisition program Data Multiplier of CH1 Module acquisition READY electric energy clock Electric energy (consumption) CH1 periodic electric energy 1 CH1 periodic electric energy 2 CH1 average Acquire each type of the current measured values of every second CH1 average voltage...
  • Page 139 9 Programing QE84WH 3. Periodic electric energy acquisition program Instruct to measure the periodic electric energy 1 Periodic Periodic electric Module (Measurement is taken electric READY energy 1 measuring energy when X2E is ON) flag measuring Instruct to measure the periodic electric energy 2 Periodic Module...
  • Page 140 9 Programing QE84WH 9.3 System configuration and usage conditions for current measuring mode A sample program is shown below based on the following system and the usage condition. (1) System configuration QY40(Y30～Y3F) QCPU QX40(X20～X2F) QE84WH(X/Y0～X/Y1F) Figure 9.3-1 Sample system configuration using a sample program (2) Setting conditions for the intelligent function module switch Setting is as follows: Table 9.3-1 Intelligent function module switch setting...
  • Page 141 9 Programing QE84WH (4) Before creating a program Before creating a program, attach QE84WH to the base unit, and connect it to external devices. Electric current sensor: EMU-CT250 (Split type) Power source side Load 8 Load 1 Figure 9.3-2 Example of wiring using a sample program 9 - 12...
  • Page 142 9 Programing QE84WH 9.3.1 Sample program when make the initial setting using GX Works2 or GX Developer. A sample program is shown below based on the following system and the usage condition. (1) List of devices Table 9.3.1-1 List of devices Device Function D0, D1...
  • Page 143 9 Programing QE84WH (2) List of buffer memories to be used Table 9.3.1-2 List of buffer memories to be used Device Description Setting Remarks value CH1 and Primary current 250 A U0\G4003 U0\G4004 Current demand time 30 sec. U0\G4054 Current demand time 30 sec.
  • Page 144 9 Programing QE84WH 1. Initial setting program for QE84WH Flag for Module CH1 and 2 primary complete READY current operating condition setting Primary current of Basic operating condition setting CH1 Current demand time CH2 Current demand time Alarm 1 item Alarm 1 value CH1 Alarm 1 operating condition...
  • Page 145 9 Programing QE84WH Alarm 2 item Alarm 2 value CH1 Alarm 2 operating condition setting Alarm 2 reset method Alarm 2 delay time Output period of data acquisition clock setting Output period of data acquisition clock Set the request of operating condition setting (Y2) to ON Request of operating condition setting...
  • Page 146 9 Programing QE84WH 2. Measured data acquisition program CH1 current Data Module Acquire each type of the acquisition READY clock measured values of every 0.5 second CH2 current 3. Alarm monitoring function program Output ON to Y30 when the alarm 1 occurs Module CH1 alarm 1 Alarm 1 occurs...
  • Page 147 9 Programing QE84WH 9.3.2 Sample program when make the initial setting using sequence program. A sample program is shown below based on the following system and the usage condition. (1) List of devices Table 9.3.2-1 List of devices Device Function D0, D1 Device that stores CH1 current D4, D5...
  • Page 148 9 Programing QE84WH (2) List of buffer memories to be used Table 9.3.2-2 List of buffer memories to be used Device Description Setting Remarks value CH1 and Primary current 250 A U0\G4003 U0\G4004 Current demand time 30 sec. U0\G4054 Current demand time 30 sec.
  • Page 149 9 Programing QE84WH 1. Initial setting program for QE84WH Flag for Module CH1 and 2 primary complete READY current operating condition setting Primary current of Basic operating condition setting CH1 Current demand time CH2 Current demand time Alarm 1 item Alarm 1 value CH1 Alarm 1 operating condition...
  • Page 150 9 Programing QE84WH Alarm 2 item Alarm 2 value CH1 Alarm 2 operating condition setting Alarm 2 reset method Alarm 2 delay time Output period of data acquisition clock setting Output period of data acquisition clock Set the request of operating condition setting (Y2) to ON Request of operating condition setting...
  • Page 151 9 Programing QE84WH 2. Measured data acquisition program CH1 current Data Module Acquire each type of the acquisition READY clock measured values of every 0.5 second CH2 current 3. Alarm monitoring function program Output ON to Y30 when the alarm 1 occurs Module CH1 alarm 1 Alarm 1 occurs...
  • Page 152 10 Troubleshooting QE84WH Chapter 10: Troubleshooting If abnormal sound, a smell, smoke, and generation of heat occur from this apparatus, CAUTION please turn off the power immediately and stop use. 10.1 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.
  • Page 153 10 Troubleshooting QE84WH Error code Error Measuring Descriptions Action Reference (HEX) level mode output period data Current Output period of data acquisition acquisition clock within the range* of 0 Section 2000h measuring clock is set out of range. to 86400000 in the double word 6.2.12 format (32-bit integer).
  • Page 154 10 Troubleshooting QE84WH 10.2 Troubleshooting 10.2.1 When "0" LED (RUN) is turned off Table 10.2.1-1 When "0" LED is turned off Check item Action Reference Check that supply voltage of the power source is within the Is power source is supplied? rating.
  • Page 155 10 Troubleshooting QE84WH 10.2.3 If electric energy cannot be measured The following check has to be performed while current is flowing from the power source side to the load side. Note that electric energy is not measured in the current measuring mode. Table 10.2.3-1 If electric energy cannot be measured Check item Action...
  • Page 156 10 Troubleshooting QE84WH 10.2.4 If the electric current and voltage that are measured using this module do not match with the ones measured with other gauge Table 10.2.4-1 If current and voltage that are measured using this module do not match with the ones measured with other gauge Check item Action...
  • Page 157 10 Troubleshooting QE84WH 10.3 Q&A 10.3.1 General 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.
  • Page 158 10 Troubleshooting QE84WH If a load such as welding equipment exists, a current flows only for a short period (e.g. 2-cycle waveform of commercial frequency (50 Hz: 40 ms, 60 Hz: 33 ms)). Is accurate measurement possible? This module makes measurement with a sampling period of 4340 Hz (for both 50 Hz and 60 Hz).
  • Page 159 10 Troubleshooting QE84WH 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%...
  • Page 160 10 Troubleshooting QE84WH 10.3.4 Q&A about Connection Does polarity exist in connection between a current sensor and the module? Yes, it does. Make connections so that secondary terminals of current sensor (k, l) and terminal symbols of module agree with each other. If polarity is incorrect, the current value is measurable, but the electric power and the electrical energy can not be measured correctly.
  • Page 161 Appendix QE84WH Appendix Appendix 1: External dimensions Unit [mm] Appendix - 1...
  • Page 162 Appendix QE84WH Appendix 2: Optional devices Split type current sensor ■ Item Specifications Model EMU-CT50 EMU-CT100 EMU-CT250 EMU-CT400 EMU-CT600 Rated primary current 50 A AC 100 A AC 250 A AC 400 A AC 600 A AC Rated secondary current 16.66 mA 33.33 mA 66.66 mA...
  • Page 163 Appendix QE84WH 5A current sensor ■ Item Specifications Model EMU2-CT5 EMU-CT5-A Rated primary current 5 A AC Rated secondary current 1.66 mA Rated burden 0.1 VA Maximum voltage 260 V AC 260 V AC (voltage to ground／line voltage) Ratio error ±1 %（5 % to 100 % of rating，R ≦10 Ω）...
  • Page 164 Appendix QE84WH Appendix 3: Optional devices ■ Current sensor  EMU-CT50, EMU-CT100, EMU-CT250  EMU-CT400, EMU-CT600 Core cover Protective cover M4 screw Split metal Hole for core surface fixing Secondary terminal （3×2） M4 screw Secondary short-circuit switch Binding band Stopper Movable Terminal Hook for fixing the movable core...
  • Page 165 Appendix QE84WH ■ Dedicated cable  5A current sensor cable EMU2-CB-Q5B Unit[mm]  Extension cable（standard） EMU2-CB-T**M Model EMU2-CB-T1M EMU2-CB-T5M EMU2-CB-T10M Length 1000 mm 5000 mm 10000 mm  Extension cable（separate） EMU2-CB-T**MS Model EMU2-CB-T1MS EMU2-CB-T5MS EMU2-CB-T10MS Length 1000 mm 5000 mm 10000 mm Appendix - 5...
  • Page 166 Index 【５】 【Ｍ】 5A current sensor cable ·························· 8-17 Max./min. value hold function ············· 4-1, 4-12 【A】 Max./min. values clear completion Alarm delay time ··································· 4-13 flag (Xn4) ······································· 4-12, 5-4 Max./min. values clear request (Yn4) ··· 4-12, 5-6 Alarm flag ······································ 4-16, 5-5 Measured items ······································...
  • Page 167 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.
  • Page 168 Vte. Agua Santa 4211 Casilla 30-D (P.O. Box) Vina del Mar, Chile +56-32-2-320-600 Mitsubishi Electric Automation (China) Ltd. Mitsubishi Electric Automation Building, No.1386 Hongqiao Road, Shanghai, China 200336 +86-21-2322-3030 Mitsubishi Electric Automation (China) Ltd. 5/F,ONE INDIGO,20 Jiuxianqiao Road Chaoyang District,Beijing, China 100016...

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