Mitsubishi Electric NF400-SEW Instruction Manual
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Mitsubishi Electric NF400-SEW Instruction Manual

Mdu breaker: breaker-mounting
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MDU BREAKER: BREAKER-MOUNTING
MODEL
NF400-SEW with MDU, NF400-HEW with MDU
NF800-SEW with MDU, NF800-HEW with MDU
INSTRUCTION MANUAL
● Read this Instruction Manual carefully prior to use, so that the product is used properly.
● After reading this manual, store it in a safe place so that it can be easily referenced when needed.
● Make sure that the end user receives this Instruction Manual.
Indications and what they mean are listed below.
Danger
Caution
● Do not touch the terminal area. Doing so may cause electrical shock.
MDU Breaker
(Breaker-mounting)
Some items are not measured or displayed depending on models or specifications. These items and functions will be skipped.
For models with CC-Link communication, refer to the PLC User
• CC-Link System Master/Local Module User
　
* The CC-Link version is
Wrong handling may cause dangerous situation in which possibility of fatal accidents or serious injuries assumed.
Wrong handling may cause dangerous situation in which possibility of significant or minor injuries, or material damages assumed.
Using this under certain conditions could cause electrical shock.
MDU Breaker main unit
MDU
s Manual
'
CC-Link Ver. 1.10.
"
"
Danger
Caution
MDU Breaker
(Breaker-mounting unit separate installation)
s Manual before reading this Instruction Manual.
'
MDU Breaker main unit
MDU
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Summary of Contents for Mitsubishi Electric NF400-SEW

  • Page 1 MDU BREAKER: BREAKER-MOUNTING MODEL NF400-SEW with MDU, NF400-HEW with MDU NF800-SEW with MDU, NF800-HEW with MDU INSTRUCTION MANUAL ● Read this Instruction Manual carefully prior to use, so that the product is used properly. ● After reading this manual, store it in a safe place so that it can be easily referenced when needed.

  • Page 2: Table Of Contents

    ■ Table of Contents 1. Safety Precautions ………………………………………………………………………………………………………… 3 2. Precautions for Use ………………………………………………………………………………………………………… 3 2.1 Standard operating conditions ……………………………………………………………………………………… 3 2.2 Withstand voltage test ………………………………………………………………………………………………… 4 2.3 Connection and installation ………………………………………………………………………………………… 5 2.4 Preparation before use ……………………………………………………………………………………………… 6 2.5 Requests ………………………………………………………………………………………………………………… 6 2.6 Notes on usage …………………………………………………………………………………………………………...
  • Page 3 7. Names and Functions of MDU Parts ………………………………………………………………………………… 26 7.1 Display/operation panel …………………………………………………………………………………………… 26 7.2 Terminal area ………………………………………………………………………………………………………… 26 7.3 CC-Link setting area (with CC-Link communication option) ………………………………………………… 27 7.4 Number of CC-Link communication connectable units and precautions …………………………………… 28 7.5 Installation and wiring for products with CC-Link communication ……………………………………………...

  • Page 4: Safety Precautions

    Unless otherwise noted, the following terms in this Instruction Manual indicate the models shown below. 400 A frame 800 A frame Molded Case Circuit Breaker (MCCB) NF400-SEW with MDU, NF400-HEW with MDU NF800-SEW with MDU, NF800-HEW with MDU 2.1 Standard operating conditions Caution ●...

  • Page 5: Withstand Voltage Test

    2.2 Withstand voltage test Caution ● When conducting a MDU terminal test, always connect the MDU Breaker main unit and MDU. ● A voltage measurement transformer is connected between poles on the load side of the MDU Breaker main unit. In the table below, ×...

  • Page 6: Connection And Installation

    2.3 Connection and installation Caution ● MDU Breaker cannot be used with the power side and load side reversed. ● Do not forcefully pull the connection cable between the MDU and MDU Breaker main unit (15 N or less). Doing so may loosen or disconnect the cable.

  • Page 7: Preparation Before Use

    (2) Mitsubishi Electric shall not be held responsible for damage caused for reasons not attributable to Mitsubishi Electric; opportunities or profit lost by customers caused by Mitsubishi Electric product failure; damage caused from extraordinary circumstances, secondary damage, accident compensation, damage to anything other than Mitsubishi Electric products, or compensation for any other work, whether foreseen or not by Mitsubishi Electric.

  • Page 8: Cautionary Instructions For Handling Mdu Breaker

    3. Cautionary Instructions for Handling MDU Breaker 3.1 Cautionary instructions for using MCCB Caution ● Electrical work must be performed by a qualified person (electrical worker). ● Maintenance and inspections must be conducted by someone with specialized knowledge. Turn the host circuit breaker OFF and confirm that no electricity is flowing.

  • Page 9: Setting Method Of Overcurrent Tripping Characteristics

    (Ii) instantaneous tripping current (Ii) Example: When NF400-SEW with MDU Ir = 200 A, Example: When NF400-SEW with MDU Ir = 200 A, if “ls = 10 × lr” and “li = 4 × rated current”, ls = 2,000 A and li = 1,600 A, if “ls = 10 ×...

  • Page 10: Testing Method Of Overcurrent Trip

    3.4 Testing method of overcurrent trip Test by using the “Y-351” breaker tester (option) or by energizing the MDU Breaker main unit. If using the “Y-351” breaker tester, follow the instructions in that product's Instruction Manual. Caution ● For the pre-alarm contact output for a MCCB (with alarm contact attached [optional]), the MDU is connected to the MDU Breaker main unit and will not operate unless control power is applied to the MDU and the alarm contact output.

  • Page 11: Alarm Contact Output (Optional)

    4. Alarm Contact Output (Optional) Caution ● Note that alarm contact output will not operate unless control power is applied to the MDU and the alarm contact output. ● Alarm contact output is a factory installed option. It cannot be installed after. ●...

  • Page 12: Mdu Breaker Installation Procedure

    5. MDU Breaker Installation Procedure 5.1 Installing MDU Breaker main unit Caution ● If installing with connection cables attached to the MDU Breaker main unit, make sure that connection cables and connectors are not caught and damaged. ● Connection cable connectors are precision parts. Be especially careful to protect them from damage during installation. ●...

  • Page 13: Mdu Installation (Separate Installation)

    5.3 MDU installation (separate installation) Caution ● The MDU has the reset switch, address (station number) setting switch (when CC-Link communication functions are equipped) and communication speed setting switch (when CC-Link communication function is equipped). Install the MDU onto a position where you can easily perform reset operation and change settings. (1) Installation to the IEC rail (35 mm) [1] Hook it on.

  • Page 14: Wiring Of Mdu Terminal Block

    5.4 Wiring of MDU terminal block [Breaker-mounting MDU] Caution ● The power supply side terminals of the MDU are M3 screws. For tightening, apply the suitable tightening torque (0.5 to 0.7 N ･ m). ● If two crimp terminals are used for transition wiring on the power supply side terminal of the MDU, it may be difficult to close the terminal cover depending on the wire and the crimp terminals.
  • Page 15 Caution The products listed in page 13 may not be compatible with some electric wires. For details, contact the pin terminal (crimp terminal) manufacturer directly. However, if using a pin terminal (crimp terminal) with a metallic portion longer than 7 mm, cut the metallic portion to 7 mm as shown in the figure below. Pin terminal Metallic portion 7 mm...

  • Page 16: Mdu Features And Functions

    6. MDU Features and Functions 6.1 Features of MDU ● The load current, line voltage, harmonic current (fundamental frequency; 3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th, and 19th order; and total), electric power, reactive power, electric energy, reactive energy, power factor, and frequency flowing to MDU Breaker can be measured and displayed. ●...

  • Page 17: Measurement Functions

    6.3 Measurement functions 6.3.1 Measurement function list The following table lists measurement elements and elements that can be communicated/displayed. Measurement elements that can be communicated and displayed Measurement elements Communication Display Display rauge* ● ● Each-phase 0.0, 1.2 to 999.9, 1000 to 1600 A ●...

  • Page 18: Measurement Rated Values/Measurement Range And Accuracy

    6.3.2 Measurement rated values/measurement range and accuracy (1) Electric current [1] The present value is the effective value during a single cycle. Each-phase means the 1-, 2-, 3-, and N-phase. “ ” [3] Totals (average value) are calculated as follows when setting the phase and wire (factory setting is three-phase three-wire for three-pole products, and three-phase four-wire for four-pole products).
  • Page 19 (2) Voltage [1] The present value is the effective value during a single cycle. Between each line means the between phases, such as between 1-phase and 2-phase, 2-phase and 3-phase, 3-phase and 1-phase, “ ” 1-phase and N-phase, 2-phase and N-phase, and 3-phase and N-phase. [3] Totals (average value) are calculated as follows when setting the phase wire type.
  • Page 20 (4) Electric energy/Reactive energy [1] The integrated value is the cumulative total value, from when usage began (after previous reset) to now. (The electric energy during reverse power flow is not added.) [2] The electric energy and reactive energy can be set to any value. [3] The latest one hour amount is the one hour amount from one hour to the next hour as measured by the internal clock.
  • Page 21 (7) Harmonic current [1] The present value is the effective value during a single cycle. [2] The present harmonic current value measures the fundamental frequency and order (3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th, 19th) of each phase (1-phase, 2-phase, 3-phase, N-phase). “...

  • Page 22: Monitoring Functions

    6.4 Monitoring functions 6.4.1 Monitoring function list ● The following table shows monitoring elements, along with elements that can be displayed on the display or communicated. 　“ Display indicates that the item is displayed on the display. Communication indicates that the item can be communicated through ”...

  • Page 23: How To Use Monitoring Functions

    6.5 How to use monitoring functions 6.5.1 MDU Breaker alarms (1) PAL (load current pre-alarm) The alarm is output to display/over communication when the load current ≥ the pre-alarm current, and the duration ≥ Alarm details the pre-alarm operating time (1/2 the long time delay operating time (TL)). Setting method No settings.
  • Page 24 (4) ILA_AL (electric current open phase alarm) Monitoring starts when the load current for any phase reaches or exceeds 10% of the measurement rated current. Alarm details The alarm is output to display/over communication when an energization phase equal to or less than the maximum phase current ×...

  • Page 25: Mdu Breaker Status

    6.5.2 MDU Breaker status Communicates the total number of times the MDU Breaker has tripped from when usage Trip frequency began to now. MDU Breaker status details Open/close Communicates the total number of times the MDU Breaker has opened/closed from when frequency usage began to now.

  • Page 26: Neutral Line Open Phase Alarm (Nla)

    6.5.5 Neutral line open phase alarm (NLA) The alarm generation status is displayed when the line voltage ≥ rated operation overvoltage, and the duration ≥ operating time. Alarm details (It is not communicated.) Set via communication or on the display This function is turned ON when the line system is set to single-phase three-wire system.

  • Page 27: Names And Functions Of Mdu Parts

    7. Names and Functions of MDU Parts Some items or functions are not measured or displayed (transmit) depending on models or specifications. These items and functions will be skipped. * Refer to 9. MDU Operation Procedure for details. “ ” 7.1 Display/operation panel Measurement values, alarms, setting values, etc.

  • Page 28: Cc-Link Setting Area (With Cc-Link Communication Option)

    7.3 CC-Link setting area (with CC-Link communication option) The MDU is a remote device station that occupies a single station. MDU input data is retained if a sequencer CPU error or data ring error occurs. (1) Station number (STATION No.) setting switches Open the cover for the setting area on the front of the MDU, and use the station number setting switches to set the CC-Link communication station number via BCD code.

  • Page 29: Number Of Cc-Link Communication Connectable Units And Precautions

    7.4 Number of CC-Link communication connectable units and precautions The MDU is a remote device station that occupies a single station. The number of connectable units and combinations with other devices must satisfy both “ number of connectable units in condition 1 ”...

  • Page 30: Installation And Wiring For Products With Cc-Link Communication

    7.5 Installation and wiring for products with CC-Link communication 7.5.1 Terminator installation Terminators (included with the master unit) must be installed on the units at both ends of the CC-Link transmission line. Master unit Terminator Special CC-Link Special CC-Link cable cable If the MDU is at the end of the CC-Link transmission line, connect a terminator between DA and DB in the MDU terminal block.

  • Page 31: Mdu Detailed Specifications

    The MDU electric current measurement accuracy is ± 1.0% of the maximum current setting (measurement rated current) of the circuit breaker. For example, the permissible difference of NF400-SEW with MDU is 4.0A (400 A × 1.0%), so the permissible difference from a current of 0 A to 400 A would be ±...
  • Page 32 (4) Intermittent load (such as welder) measurement Items such as current, voltage, and electric power are measured (sampled) once every 250 ms. Any values, such as current value, are calculated and the measurement value is updated at this timing. However, the minimum update cycle for measurement results displayed on the display or output over communication data is 500 ms. This will result in a larger errors if there is a continuous load (such as due to a resistance welder), and is therefore not suited for measurement in such cases.

  • Page 33: Mdu Operation Procedure

    9. MDU Operation Procedure To set the display items and functions, use the operation switches as shown in the figure below. Some models do not measure or display (transmit) some items or functions. These functions and items will be skipped. 9.1 Operating method for main menu screen The main menu screen provides access to each display screen.

  • Page 34: Measurement Value Display And Display Contents

    9.2 Measurement value display and display contents ・ Select METER in the main menu screen. The measurement display screen can be opened with ENTER. ● EP : Electric energy ・ The options switch with UP/DOWN as follows: EP ⇔ I ⇔ V ⇔ P ⇔ Q ⇔ PF ⇔ Hz ⇔ HI (A) ⇔ ●...
  • Page 35 (4) Electric power 　・ Measured electric power values are displayed. Use SELECT to switch display screens. [Present electric power [Present electric power [Maximum electric power display screen] demand display screen] demand display screen] SELECT SELECT SELECT M a x D e m d D e m d To [Present electric power display screen] k W ]...
  • Page 36 (8) Present harmonic current 　・ The total value of present harmonic current value of each phase, and the measurement values of fundamental frequency and each harmonic order are displayed. Use SELECT to switch display screens. Display switches as follows: Total value → fundamental frequency (1st oder) → 3rd order → ... 19th order → total value..[Present harmonic current display screen ] Total value...
  • Page 37 (12) Reactive energy 　・ Measured reactive energy values are displayed. Use SELECT to switch display screens. [Reactive energy [One-hour reactive [Maximum one-hour reactive energy display screen] energy display screen] display screen] SELECT SELECT SELECT D e m d To [Reactive energy display screen] [ k v a r h ] k v a [ k v...

  • Page 38: Display Method For Protection Characteristic Setting Values

    9.3 Display method for protection characteristic setting values ・ Select PROTECT from the main menu screen and press ENTER to switch to the protection characteristics selection screen. ・ The options switch as follows: LTD ⇔ STD/INST ⇔ ER ⇔ LTD ..　...
  • Page 39 (4) Short time delay operating time (Ts) check 　・ The short time delay operating time (Ts) setting value can be checked in the STD/INST setting value display screen. [STD/INST setting value display screen] Select with UP/DOWN T E C S T D / I Ts setting value ●...

  • Page 40: Fault/Alarm Display Methods And Display Contents

    9.4 Fault/Alarm display methods and display contents ・ Select TRIP/AL in the main menu screen and press ENTER to switch to the fault/alarm display screen. ・ The screen switches between the fault cause/current display screen and the alarm display screen with UP/DOWN. [Fault cause/current [Fault cause/current display screen]...

  • Page 41: Method For Various Settings

    9.6 Method for various settings ・ Select SETTING in the main menu screen and press ENTER to switch to the setting screen. ・ The options switch as follows: Measure ⇔ Alarm ⇔ LCD ⇔ Date ⇔ EP/EQ ⇔ Measure..[Main menu screen] [Setting screen] ENTER A I N...
  • Page 42 (2) Demand time limit setting 　 [Default value: 2 min] 　・ Select Demand on the measurement setting selection screen. (Screen [1]) 　・ Press ENTER to switch to the demand time limit display screen. (Screen [2]) 　・ Next, press ENTER to enable the change of the demand time limit display setting. (Screen [3])0 ⇔...

  • Page 43: Setting Method For Alarms

    9.6.2 Setting method for alarms ・ Select Alarm on the setting screen and press ENTER to switch to the alarm setting selection screen. ・ The options switch as follows: PAL ⇔ IDM_AL ⇔ ILA_AL ⇔ IUB_AL ⇔ AL_Hold ⇔ PAL..[Alarm setting [Setting screen] selection screen]...
  • Page 44 (3) Electric current open phase alarm (ILA_AL) setting 　・ Select ILA_AL on the alarm setting selection screen. (Screen [1]) 　・ Press ENTER to switch to the electric current open phase alarm setting display screen. (Screen [2]) Press ENTER again, select ON (function enabled) or OFF (function disabled), and press ENTER to decide the setting. (Screen [3]) 　・...

  • Page 45: Setting Method For Lcd

    9.6.3 Setting method for LCD ・ Select LCD on the setting screen and press ENTER to switch to the LCD setting selection screen. ・ The options switch as follows: LCD-BL ⇔ Contrast ⇔ Direction ⇔ LCD-BL..[LCD setting [Setting screen] selection screen] ENTER ●...
  • Page 46 (3) Display method setting 　 [Default value:1 2 (Vertical direction display)] 　・ Select Direction on the LCD setting selection screen. (Screen [1]) 　・ Press ENTER to open the display direction setting display screen. (Screen [2]) Press ENTER and select one from the following options: 2 : Vertical direction display : Horizontal direction display - 1 : Horizontal direction display - 2...

  • Page 47: Setting Method For Date And Time

    9.6.4 Setting method for date and time [Default value: 10/01/01 00:00] ・ Select Date on the setting screen. (Screen [1]) ・ Press ENTER to switch to the time setting display screen. (Screens [2] to [4]) Press ENTER or SELECT to shift from Year → Month → Day → Hour → Minute. Press Return to return from Minute → Hour → Day → Month → Year. Select an item to change, and then change the value with UP/DOWN.
  • Page 48 (2) Reactive energy setting 　・ Select EQ (varh) in the electric energy setting selection screen and press ENTER to go to the reactive energy setting display screen. (Screen [1]) 　・ Press ENTER to enable the setting of reactive energy. (Screen [2]) Press ENTER or SELECT to toggle the options between Leftmost digit ...

  • Page 49: Measurement Display List

    9.7 Measurement display list (1) Vertical display [Present harmonic current] [One-hour Maximum one-hour ･･･････ [Electric energy] electric energy] electric energy] [Compound] Total value Fundamental frequency 19th D e m d t o t a l 1 s t 3 r d 1 9 t h [ k W h ] [ k W...
  • Page 50 (2) Horizontal display [Electric energy] [One-hour electric energy] [Maximum one-hour electric energy] [Compound] [1] Electric energy/ M a x Compound D e m d [ k W h ] D e m d [ k W h ] 12490 [ k W 1 7 / 1 1 / 0 5 2 0 : 0 0 [Present current]...

  • Page 51: Appendix

    10. Appendix 10.1 Precautions for setting operation The display can be used to set and clear the items described in “ 9.5 Method for resetting fault cause/current, alarm, maximum value, electric energy, and reactive energy 9.6 Method for various settings. ”...

  • Page 52: Precautions For Mdu With Cc-Link Communication

    10.3 Precautions for MDU with CC-Link communication (1) Note that the special link registers of the master unit (SW0084 to SW0087) will not be set to (ON), even if a watchdog timer error occurs in the “ ” MDU. (2) A power outage will occur in the CC-Link I/F section if the power turns OFF for at least 5 to 10 ms. When the power is restored, the initial data processing request flag (RX(n+1)8) will be set to (ON), remote READY (RX(n+1)B) will be set to (OFF), the bits that indicate the alarm and...

  • Page 53: Remote Register Allocation (With Cc-Link Communication)

    10.5 Remote register allocation (with CC-Link communication) Remote register allocation is shown below. Send/receive direction Address Details RWwm Master RWwm+1 ↓ Command, channel, data, etc. RWwm+2 Remote RWwm+3 RWwn Remote RWwn+1 ↓ Reply data from RWwm command RWwn+2 Master RWwn+3 m, n: Address assigned by the station number setting 10.6 Communication error codes and solutions (1) With CC-Link transmission option...
  • Page 54 +880-31-624-307 +880-28-321-791 +855-23-997-725 +56-32-2-320-600 +86-21-2322-3030 +86-755-2399-8272 +86-28-8446-8030 +57-4-4441284 +20-2-27961337 +30-211-1206-900 +91-124-4630300 +62-(0)21-6610651-9 +856-20-415899 +356(0)21-697-816 +95-(0)1-202589 +977-1-4411330 +47(0)55-506000 +92-(0)42-35752323 +92-(0)42-35753373 +92-(0)42-37631632 +63-(0)2-634-8691 +966-1-4770149 +65-6473-2308 +34(0)93-565-3131 +58-212-241-9952 +84-28-3910-5945 +84-24-3937-8075...
  • Page 56 MDU Breakers Nov 2019 LN107A329H02 IB63E31-A 1911 （ MEE）...

This manual is also suitable for:

Nf400-hewNf800-sewNf800-hew

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