4 Is this model available for special primary current and special primary voltage?

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1 Category: Sales 1 Is it possible to exchange the backlights? The backlights are LED, no need to exchange. Fukuyama Works, Mitsubishi Electric Corporation March, Which standards does this model support? This model is compliant with the CE marking, the UL standard, the KC Mark and the FCC/IC. 3 Does this model support the IEC61850? This model does NOT support the IEC Is this model available for special primary current and special primary voltage? 5 Is it available to deliver the products set at the factory? 6 Is this model available for direct measurement of 400 V loads? 7 When the present model (ME96NSR + ME-0040C-NS96) is updated to the new model (ME96SSRA + ME-0040C-SS96), is the CC-Link compatible with the new model? ME96NSR + ME-0040C-NS96 -> ME96SSRA + ME-0040C-SS96 8 Is it possible to exchange the battery of the Logging unit (ME-0000BU-SS96)? This model is available for special primary current and special primary voltage if you set the main body like that. Range of special primary current: 1 A to 30 ka Range of special primary voltage: 60 V to 750 kv Special secondary voltage: 63.5 V, 100 V, 110 V, 115 V and 120 V (three-phase four-wire system) 100 V, 110 V and 220 V (three-phase three-wire type or single-phase two-wire system) It is not available. This model is available for direct measurement of 400 V loads at the Y-delta circuit in 3-phase 3-wire system. The CC-Link is compatible with the new model. Customers can NOT exchange the battery of the Logging unit. Please update the Logging unit. Category: Performance 1 Which range is the use temperature? Storage temperature range: -25 C to 75 C Operating temperature range: -5 C to 55 C (Average: 35 C or lower) Operating humidity range: 0% to 85% and no condensation 2 How long is the service life? It is 10 years for life expectancy. Please exchange the product by 10 years. Similarly, the service life of LCD is 10 years. (When it passes more than 10 years, indications become gradually thin but not disappear. This model greatly receives influence by the environment such as the humidity and the temperature. It is expected further life at the place where the humidity and the temperature are not high.) 3 Which value is the smallest load that is possible to measure? 4 Which value is the smallest voltage that is possible to measure? In case of the input current of less than A, the measurement values are as follows: Current: 0 A, Power supply: 0 W, Reactive power: 0 var, Apparent power: 0 VA, and Power factor: 1. In case of the input voltage of less than 11 V, the measurement values are as follows: Voltage: 0 V, Power supply: 0 W, Reactive power: 0 var, Apparent power: 0 VA, and Power factor: 1. 5 How fast is the analog output responded? The response speed of the analog output is 2 seconds or less. The response speed of harmonic measurement is 10 seconds or less. 6 How about the protection class of the IP standard? In a board installation state, the protection class of IP standard is equivalent to 50. This model does not support waterproofing. 7 How much is the tolerance for the instantaneous overload (including overcurrent and overvoltage)? It is no influence on operating and characteristics even the following cases. Overcurrent: 20 times of rated current is applied for 0.5 seconds. Overvoltage: 2 times of rated voltage is applied for 0.5 seconds 9 times every 60 seconds. Next, 2 times of rated voltage is applied for 5 seconds 1 time. 1/6

2 Category: Installation and Connection 1 Are the installation dimensions to a panel same as the dimensions of ME96NSR? They are the same dimensions. (Dimensions of an installation hole is 92 mm in length and width. Install this model two points with mounting brackets.) 2 Is it necessary to prepare the power supply at the time of setting? It is necessary to prepare an auxiliary power supply. As for an auxiliary power supply, you can use 50 Hz or 60 Hz from 100 VAC to 240 VAC and from 100 VDC to 240 VDC. Please connect an auxiliary power supply to a MA/MB terminal. In case of 100 VDC, please connect a positive side to a MA terminal. 3 Is it possible that an option for ME96NS Series is installed to the main body of ME96SS Series? An option for ME96NS Series can NOT be installed to the main body of ME96SS Series. An option for ME96SS Series can NOT be installed to the main body of ME96NS Series. Category: Functions (Settings) 1 Does a power interruption delete the setting data? Does this model have the battery for power interruption backup? The setting data are memorized in nonvolatile memory, so the data does not disappear at the time of a power interruption. (The main body does not use a battery.) The following data are memorized: Maximum values, Minimum values, Active energy, Reactive power, Apparent power, Operating time, and Hourly amount of power. 2 Is it possible to change the set values during operating? It is no problem. The memorized data such as active energy, reactive energy, and apparent energy does not disappear. The measurement is continued during setting. Similarly, the analog output is continued during setting. Pressing the buttons of the Set and the Reset for 2 seconds or more shifts the mode to Setting Mode. On the Setting Mode, all setting is possible. 3 How do I check the set values? Pressing the buttons of the Set for 2 seconds or more shifts the mode to the Setting Value Confirmation Mode. It is impossible to change the set values on Setting Value Confirmation Mode, which displays the same screen of Setting Mode. 4 Is it possible to initialize the set values? It is possible to initialize set values depending on setting. The initial set values vary with models. 5 Is it possible that an option for ME96NS Series is installed to the main body of ME96SS Series? 6 The set values are not changed on the setting mode. An option for ME96NS Series can NOT be installed to the main body of ME96SS Series. An option for ME96SS Series can NOT be installed to the main body of ME96NS Series. When is flashing, the Setting Value Confirmation Mode is selected. In this case, the set values cannot be changed. Pressing the buttons of the Set and the Reset for 2 seconds shifts the Operation Mode to the Setting Mode. Category: Functions (Display) 1 What does the screen change at the time of the upper/lower limit alarm? The measurement elements, including the digital indication, the unit indication and the phase indication, flash. And the ALARM indication and the HI indication or the LO indication flash. In addition, it is possible to set the backlights flashing. 2 How does the indication become at the reversed phase sequence. This model operates normally even at the reversed phase sequence. It is unnecessary to change wiring. 3 Is it possible to turn off lights of display for energy saving. 4 Is it possible to check a higher figure or a lower figure of active energy. It is impossible to turn off the LCD. It is possible to turn off back lights. When any button is not pressed for 5 minutes, the automatic off mode setting for backlights turns off the light automatically. (Pressing any button turns on the light.) The automatic lights-out setting saves power about 0.2 VA when the back lights turn off. Pressing buttons of the + and the - at the same time on the measurement screen for 2 seconds shifts the unit of active energy as follows. The value of active energy varies according to a unit. MWh Wh (lower digit indication) Wh kwh MWh It is similar for the reactive energy and the apparent energy. 2/6

3 Category: Functions (Weighing and Measurement) 1 Which range of harmonics is measured? ME96SSHA-MB ME96SSRA-MB ME96SSEA-MB Total harmonics and odd orders of harmonics from 1st to 31st Effective value and distortion rate. Harmonic current and Harmonic voltage Total harmonics and odd orders of harmonics from 1st to 19th Effective value and distortion rate. Harmonic current and Harmonic voltage Total harmonics Effective value and distortion rate. Harmonic current and Harmonic voltage 2 Is it necessary to prepare the voltage input for the measurement of only current? 3 Is it possible to stop the alarm for motor starting current in the motor circuit? 4 Is it possible to measure the received energy and the transferred energy separately? 5 The current value of this instrument is different from the current value of the other measuring instrument (such as a clamp meter). 6 The displayed active power is different from the active power that is calculated by multiplying the displayed current, voltage, and power factor. (The power value is small.) 7 The values of the current and the voltage are correct, but the active power, the reactive power and the power factor have large errors. (For example, the power is a negative value.) It is unnecessary. (It is necessary to prepare an auxiliary power supply which supplies power between MA and MB.) This model has Motor Starting Current Mask Function. This function stops the alarm output and updating of the maximum values during the setting time when a current value becomes than the threshold. (Please refer to the Set-up menu 5.5 Alarm delay time of the section 3.8 in the User s Manual.) It is possible to measure the received energy and the transferred energy separately. Setting P00 for the display pattern displays the values on the same screen. In general, in case of measurement by the average method, the waveform including harmonics increases an error. This model uses the RMS value method and measures a right value regardless of harmonics. In case of using an instrument with the average method, there may be a difference from the measured value of this instrument. Please refer to the section 6.6 of the User s Manual. When the AC waveform distorted due to harmonics, the value changes. (For AC without harmonics, the calculated value will match with the displayed value.) At the time of checking harmonics, please set on for the harmonics display on the Set-up menu 3.7. There is a possibility of the wiring error for VT/CT to this model. Please check the wiring for VT/CT and this model. 3/6

4 Category: Functions (Communication) 1 Is it possible to test the communication function? This model has the test function of the communication function. In detail, please refer to No.6 of Category: Functions (Communication) in this Q & A sheets. 2 Is it possible to check easily the measurement values using MODBUS RTU communication? It is possible to check them using the Data Acquisition Software EMU4-SW1. It is available for download without paying from the following Web site. Mitsubishi Electric site. ( Home>Products>Power Monitoring Products>Energy Saving Supporting Devices>Software Features>Data Acquisition Software ( 3 What items shall be set for communication? 1) For the main body of ME96: Please set the following values on the Set-up menu 2. In the case of MODBUS RTU Set-up menu Setting items Factory default settings No. SSHA SSRA SSEA (A) 2.2. Address 1 (B) Baud rate 19.2 kbps (C) Parity EVEn (D) Stop bit 1 It is necessary that the settings of (B) to (D) mentioned above correspond with the settings of the upper system. Please set the values so that there is no overlap of the address in the same system. In the case of MODBUS TCP Set-up menu Setting items Factory default settings No. SSHA SSRA SSEA (A) 2.4. IP address (B) Sub-net mask (C) Use/non-use of a default gateway off (Non-use) - (D) Default gateway After changing the set values, please perform the communication reset (Set-up menu: 2.4). In the case of CC-Link Set-up menu No. Setting items Factory default settings SSHA SSRA SSEA (A) 2.3. Station No. 1 - (B) Communication speed 156 kbps - (C) Communication version After changing the set values, please perform the communication reset (Set-up menu: 2.3.3). It is necessary that the settings of (B) and (C) mentioned above correspond with the settings of the upper system. This model cannot establish communication with the upper system through MODBUS RTU. What is the assumed cause? In detail, please refer to the section 3.3 to 3.5 of the User s Manual. Please check the following items. (A) Is the power supplied between MA and MB? (When the power is not supplied, the display does not appear.) (B) Is the wiring connection right? (Connection error for T/R+ and T/R-, placement error for a termination, etc.) (C) Is the protocol of the master device set to the RTU mode? (D) Does the address to be required by the master device correspond with the setting address at the main body of ME96? (E) Do the settings of the baud rate, the parity and the stop bit of this model correspond with the settings of the master device? (F) When an error code is received, please check the error contents of Section 6 of the Specifications LSPM0075. Depending on the software of the master device, an address range of the holding register reading is assigned from to For example, a decimal numeric register address of single-phase current of ME96 is 768. However, in the case of the software such as the above, a register address shall be 40679, which is /6

5 4 The indication values does not correspond with the acquired values through MODBUS. The acquired value by communication shall be multiplied by the multiplying factor to change into the measurement value. Please refer to Section 7.3 of the Specification LSPM0075 for the multiplying factor. 5 What are the usage differences between 1280 or 1281 and 1304 or 1408 which are register address for active energy monitors? The acquired digit length of MODBUS monitor varies with instruments. Example) When the primary current is 4000 A or more and the indication value of ME96 is A, Acquisition data of the register address 768 (current value) is 123, or Acquisition data of the register address 754 (multiplying factor) is 1. Therefore, the acquisition data is 123 x > 1230 A. The indication value is truncated to the ones place. Therefore, a difference may arise between the indication number and the acquisition data through communication. The acquired digit length of 1280, 1281 and 1304 varies with the full load power. The acquired digit length of 1304 is 6-digit. Each of 1280 and 1281 acquires 3-digit which 6-digit of 1304 is distributed into. The unit of 1408 (including 1390 and 1426 ) is fixed. Please refer to p. 20 of the Specification LSPM0075. Example) When the measurement value is 3,210, kwh, the communication data is the following: [When the full load power is less than 10 kw] Register address: > Register address: > 765 Register address: > 098 [When the full load power is 10 kw or more and less than 100 kw] Register address: > Register address: > 876 Register address: > 109 [When the full load power is 1,000 kw or more and less than 10,000 kw] Register address: > Register address: > 098 Register address: > What data are replied on the test mode? Are the initial set values displayed regardless of setting? [Regardless of the full load power] Register address: > (Fixed unit is Wh.) Register address: > (Fixed unit is kwh.) Register address: > (Fixed unit is MWh.) When the software of the upper system supports the 4-byte data, we recommend the register address of 1408 (including 1390 and 1426 ). (A) Measurement values As for the measurement elements on the test mode screen, the set values are displayed. As for the measurement elements except them, 0 is displayed. (1 is displayed for the power factor.) (B) 16-bit Monitor The current contact input status is receives. (C) Alarm As for the measurement elements that are set at the main body, Alarm will be displayed. The shift to the test mode needs the setting at the main body. The upper system cannot shift to the test mode. 5/6

6 7 The COM of the LCD is flashing. What does it that COM in the LCD screen is blinking mean? A reason varies with the connection situation of options. (Please refer to the section 6.6 of the User s Manual.) In the case of MODBUS RTU Error content: Communication error such as an address error Please refer to the User s Manual for error codes and error contents. Countermeasure: Check the register addresses, function code and the communication settings. If the correct query received, COM is lit. In the case of MODBUS TCP (ME-0000MT-SS96) Error content: Communication error such as a data error of the TCP header part and an address error Please refer to Section 6 of the LSPM0075 for error codes and error contents. Countermeasure: Check the data of the header part and the communication settings. If the correct query received, COM is lit. In the case of CC-Link (ME-0040C-SS96) Error content: Hardware error Countermeasure: Check the wiring between the main body of ME96 and the option. 8 Is it possible to use MODBUS RTU communication and CC-Link communication at the same time? Is it possible to use MODBUS RTU communication and MODBUS TCP communication at the same time? 9 When the active energy setting is set to 12-digit display on the communication test mode, how is the value displayed? In the case of Logging unit (ME-0000BU-SS96) Error content: Setting error, SD memory card error, battery voltage reduction, etc. Check the LED situation of the option. Please refer to Section 1 of the User s Manual. Countermeasure: Refer to Section 1 of the User s Manual. MODBUS RTU communication and CC-Link communication can be used at the same time. MODBUS RTU communication and MODBUS TCP communication can be used at the same time. Regardless of setting, the value of the default digit length is replied. When the register address 1304 for 6-digit display is set, the value varies with the full load. As for the register address with a fixed unit, the value is displayed with 9-digit. Register address for 9-digit display: 1309, 1408 and (A) How many units can be connected to MODBUS RTU? (B) Is it possible to connect 64 units to MODBUS RTU using EMU4-SW1? 11 The value of the power factor of each phase to be monitored through MODBUS does not match the indication values of the main body. In detail, please refer to the No.3 of this Q & A sheets. (A) It is available up to 31 units. (B) It is necessary to prepare at least 3 PCs. (31 units + 31 units + 2 units) Please check the register addresses. The register address for the present value of the power factor of each phase is There are the register addresses receiving a maximum and a minimum value. 6/6