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Mitsubishi Electric MELSERVO EMC Installation Manuallines
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Mitsubishi Electric MELSERVO EMC Installation Manuallines

Mitsubishi Electric MELSERVO EMC Installation Manuallines

Ac servo system
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Mitsubishi Electric AC Servo System
EMC Installation Guidelines

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Summary of Contents for Mitsubishi Electric MELSERVO EMC

  • Page 1 Mitsubishi Electric AC Servo System EMC Installation Guidelines...

  • Page 3: Table Of Contents

    CONTENTS CHAPTER 1 INTRODUCTION CHAPTER 2 EMC STANDARDS CHAPTER 3 EMC COUNTERMEASURES Basic EMC countermeasures ............. . . 7 Cabinet design.
  • Page 4 Selection example ............... . 34 CHAPTER 7 APPENDIX Combination with EMC filters.

  • Page 5: Chapter 1 Introduction

    INTRODUCTION The EMC counter measures described in this guideline are recommended. Use this guideline as a reference and take additional countermeasures according to the customer's operating environment. We have carried out EMC standard compliance confirmation tests with the servo amplifier in the installation environment described in this guideline.
  • Page 6 MEMO 1 INTRODUCTION...

  • Page 7: Chapter 2 Emc Standards

    EMC STANDARDS Mitsubishi Electric general-purpose AC servo MELSERVO complies with the product family standard EN 61800-3. This standard largely regulates two types of tolerance, emission and immunity. Emission (EMI: Electromagnetic Interference) is the ability to prevent equipment from emitting obstructive noise that adversely affects external sources.
  • Page 8 MEMO 2 EMC STANDARDS...

  • Page 9: Chapter 3 Emc Countermeasures

    EMC COUNTERMEASURES Install the servo amplifier in a metal cabinet. Basic EMC countermeasures The following measures should be taken as EMC countermeasures. • Install the device in a sealed metal cabinet. • Install a noise filter. • Securely ground the device. •...

  • Page 10: Cabinet Design

    Cabinet design In addition to the EMC countermeasures described in this chapter, NFPA79 approved by the United States requires that the wiring between a servo amplifier and a servo motor be insulated from wiring of other control or signal circuits if a shielded wire is not used. (Example: 100 mm or more for 20 A or less) The servo is a complex component incorporated into another machine.
  • Page 11 Securely ground the cabinet door to the cabinet. If the door is poorly grounded, the door itself becomes a large antenna and radiates noise. Therefore, take the following measures. • Use a metal door. • Connect the door and cabinet with thick braided wire at as many points as possible. •...

  • Page 12: Filter Wiring And Installation

    Filter wiring and installation When connecting multiple servo amplifiers to one EMC filter, refer to the following. Page 32 Connecting multiple servo amplifiers to one EMC filter Wiring Wire the servo and filter as shown below. Servo amplifier Molded- Power case Magnetic Main circuit...

  • Page 13: Installation

    Installation Install the servo amplifier and EMC filter to the same cabinet. Install the filter on the right or left side of the servo amplifier as shown in the figure below. For details of the EMC filter, refer to the following. Page 18 EMC filter (for servo amplifier power supply) To ensure that the cabinet, filter, and servo amplifier have the same potential, remove or plate paint on the filter surface and securely ground it to the cabinet.

  • Page 14: Cable Layout

    Cable layout Securely ground the cabinets 1 and 2 and the servo motor. Separate the main circuit power cable of the servo amplifier, power cable of the servo motor, and control circuit signal cable by 30 cm or more, and do not wire them in parallel or bundle them. An installation example is shown in the figure below.

  • Page 15: Servo Motor Power Cable (1)

    Servo motor power cable (1) If stripping the cable outer sheath will affect the safety of the machine such as electric shock or injury, it is recommended to install additional protective covers or enclosures. Shielded cable Cabinet Grounding with the P or U clip Keep as close as 10 cm or less...
  • Page 16 Ground the shield with a metal P clip or U clip. For the reasons why the P clip or U clip is specified for grounding, refer to the following. Page 31 Reason why grounding with P clips or U clips is required •...

  • Page 17: Encoder Cable (2)

    Encoder cable (2) Cabinet As close as 10 cm or less Connector To servo possible amplifier Servo motor Shield twisted pair cable Use a shielded twisted pair cable for the encoder cable, and ground it on both sides of the servo amplifier and encoder with P clips or U clips.

  • Page 18: Controller Connection (Command) Cable (Except For Sscnet Iii Cable) (3)

    Controller connection (command) cable (except for SSCNET III cable) (3) If controller and servo amplifier are in the same cabinet Use a shielded twisted pair cable, and ground it on both sides of the controller and servo amplifier with P clips or U clips. When the cable length is 2 m or less, ground the cable on the controller side.

  • Page 19: Cables In The Same Cabinet (4)

    Cables in the same cabinet (4) For the connection cables of the options such as the parameter unit or dynamic brake option, which is arranged in the same cabinet as the servo amplifier, use a shielded cable (shielded twisted pair cable for the parameter unit), and ground it on both sides of the option and servo amplifier with P clips or U clips.

  • Page 20: Chapter 4 Emc Countermeasure Parts

    EMC COUNTERMEASURE PARTS For details of each part, contact the parts manufacturer. Noise filter (for controller power supply) For the noise filter installed to the controller, refer to the manual of the controller used. EMC filter (for servo amplifier power supply) MR-J3 series, MR-J3W series, and MR-J2-Super series are discontinued models.

  • Page 21: Ferrite Core (Data Line Filter)

    Ferrite core (Data line filter) Noise can be prevented by installing a data line filter onto cables such as the encoder cable. For example, ZCAT3035-1330 by TDK, ESD-SR-250 by TOKIN, GRFC-13 by Kitagawa Industries, and E04SRM563218 by SEIWA ELECTRIC are available as data line filters. As a reference example, the impedance specifications of the ZCAT3035-1330 (TDK) are indicated below.

  • Page 22: Cable Clamp Fitting

    Cable clamp fitting Generally, connecting the grounding wire of the shielded wire to the SD terminal of the connector provides a sufficient effect. However, the effect can be increased when the shielded wire is connected directly to the ground plate as shown below. Install the ground plate near the servo amplifier for the encoder cable.

  • Page 23: Line Noise Filter

    Line noise filter This filter is effective in suppressing noise radiated from the power supply side and output side of the servo amplifier and also in suppressing high-frequency leakage current (0-phase current). It is especially effective for noise between 0.5 MHz and 5 MHz band.

  • Page 24: Precautions

    When contacting and using two line filters Servo amplifier (Converter unit) Power supply (4 times pass) When contacting and using four line filters Servo amplifier (Converter unit) Power supply (4 times pass) Precautions • For wires of the main circuit power supply, the effect of the filter rises as the number of passes increases, but generally four passes would be appropriate.

  • Page 25: Surge Protector

    Surge protector MR-J3 series, MR-J3W series, and MR-J2-Super series are discontinued models. To prevent damage due to surges (such as lightning and sparks) applied to the AC power supply lines, connect the surge protectors to the main circuit power supply (L1/L2/L3). MR-J5 series For details of the surge protector, refer to "Surge protector (recommended)"...

  • Page 26: Chapter 5 Connection Example For Emc Countermeasures

    CONNECTION EXAMPLE FOR EMC COUNTERMEASURES For 1-axis with 22 kW or less Cabinet: L1/L2/L3 Molded-case Surge Magnetic circuit U/V/W/ *6*14 protector contactor filter: Cable clamp: breaker L11/L21 *7*14 Cable clamp: 24 V DC U/V/W *8*14 Encoder Cable clamp: Servo motor Noise Controller filter:...

  • Page 27: For Multiple-Axis With 1 Kw Or Less

    For multiple-axis with 1 kW or less Cabinet: L1/L2/L3 Molded-case Surge Magnetic circuit protector U/V/W/E contactor *6*14 Cable clamp: filter: breaker L11/L21 *7*14 Cable clamp: 24 V DC U/V/W *8*14 Encoder Cable clamp: Servo motor Noise Controller filter: Multi axis U/V/W/E *6*14 Cable clamp:...

  • Page 28: For 30 Kw Or More

    For 30 kW or more Cabinet: L1/L2/L3 Molded-case Surge Magnetic circuit P2/C protector contactor Regenerative filter: breaker option L11/L21 Converter unit *14*17 Cable clamp: 24 V DC L+/L- Protection coordination L+/L- cable L11/L21 24 V DC U/V/W/E *11*17 Cable clamp: Drive unit *9*17 Cable clamp:...
  • Page 29 : Specific EMC countermeasure : Shielded cable : Shielded cable or metal conduit *4 The abbreviations of the terminals are P and N for MR-HP30KA or MR-HP55KA4. *5 The abbreviations of the terminals are P and N for MR-J2S-_(4). *6 Connect the converter unit and drive unit with the provided bus bar. *7 The abbreviation of the terminal is P for MR-HP30KA or MR-HP55KA4.

  • Page 30: Chapter 6 Emc Countermeasures And Effects

    EMC COUNTERMEASURES AND EFFECTS Reason for grounding the shield on both the cabinet side and servo motor chassis side For the countermeasure against radiated emissions in inverters and servo amplifiers, multiple point grounding, in which both ends of the servo motor power cable and encoder cable are grounded, tends to suppress unwanted noise. Grounding the shielded cable only on the servo amplifier side The following figure shows only the wiring of the servo motor power cable.

  • Page 31: Grounding Both Ends Of The Shielded Cable

    Grounding both ends of the shielded cable The following figure shows only the wiring of the servo motor power cable. Wire the shielded wire of the encoder cable in the same way as the power cable. • Example of wiring when both ends of the shielded cable are grounded Cabinet Grounding with the P or U clip As close as...

  • Page 32: Reason Why The Grounding Position In The Cabinet Is Specified To Be 10 Cm Or Less From The Cabinet

    Reason why the grounding position in the cabinet is specified to be 10 cm or less from the cabinet openings Various devices are installed inside the cabinet and these devices radiate or propagate unwanted noise to some extent. Depending on the cable routing method, it may not be possible to suppress the unwanted noise generated in the cabinet. By grounding the cable just before the exit of the cabinet, the noise flowing out of the cabinet can be suppressed even if unwanted noise is superimposed on the cable.

  • Page 33: Reason Why Grounding With P Clips Or U Clips Is Required

    Reason why grounding with P clips or U clips is required If stripping the cable outer sheath will affect the safety of the machine such as electric shock or injury, it is recommended to install additional protective covers or enclosures. A shielded cable is a cable covered with metal foil or braid (mesh braid).

  • Page 34: 6.4 Connecting Multiple Servo Amplifiers To One Emc Filter

    Connecting multiple servo amplifiers to one EMC filter Confirm the EMC standard compliance of the entire machine or equipment on customer side. Selection method Servo amplifier (First) Molded- Molded- Power Magnetic case case Main circuit Servo EMC filter supply contactor circuit circuit power supply...
  • Page 35 Selection table of EMC filter by total length of servo motor power cable ■200 V class Application Total length of EMC filter environment servo motor power Model Rated Rated Operating Mass Manufacturer cable current voltage temperature [kg] [VAC] [°C] IEC/EN 61800-3 50 m or less FSB-10-254-HU -40 to 85...

  • Page 36: Selection Example

    Selection example The following figure shows the connection example when three MR-J5-100A are connected with one EMC filter. Servo amplifier Molded- Molded- Power Magnetic case case Main circuit Servo EMC filter supply contactor circuit circuit power supply motor breaker breaker Servo motor power cable length 15 m Control circuit...

  • Page 37: Chapter 7 Appendix

    APPENDIX Combination with EMC filters MR-J3 series, MR-J3W series, and MR-J2-Super series are discontinued models. Combination with servo amplifiers of 22 kW or less MR-J3 series/MR-J3W series Servo amplifier Recommended filter (Soshin Electric) Mass [kg] Model Rated current [A] Rated voltage Leakage current [VAC] [mA]...

  • Page 38: Combination With Converter Units And Drive Units Of 30 Kw Or More

    Combination with converter units and drive units of 30 kW or more MR-J3 series Converter Drive unit Recommended filter (Soshin Electric) Mass [kg] unit Model Rated current Rated voltage Leakage [VAC] current [mA] MR-J3-CR55K MR-J3-DU30K_/MR-J3-DU37K_ HF3200A-UN MR-J3- MR-J3-DU30K_4 to MR-J3- TF3150C-TX CR55K4 DU55K_4...

  • Page 39: Details Of Surge Protector

    Details of surge protector • MR-J3 series, MR-J3W series, and MR-J2-Super series are discontinued models. • To use an EMC filter on the 200 V class servo amplifier, a surge protector is required. • To use an EMC filter manufactured by COSEL on the 400 V class servo amplifier, a surge protector is required.

  • Page 40: Revisions

    REVISIONS *The manual number is given on the bottom left of the back cover. Revision date *Manual number Description April 1996 IB(NA)67310-* First edition November 1997 IB(NA)67310-A Chapter 2 Table revisions Chapter 5 Addition Chapter 6 Addition November 2008 IB(NA)67310-B All pages change July 2009 IB(NA)67310-C...
  • Page 41 All pages change This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.

  • Page 42: Trademarks

    TRADEMARKS MELSERVO is a trademark or registered trademark of Mitsubishi Electric Corporation in Japan and/or other countries. All other product names and company names are trademarks or registered trademarks of their respective companies. IB(NA)67310ENG-L...
  • Page 44 IB(NA)67310ENG-L(2103)MEE MODEL: EMC INSTRUCTION GUIDELINES MODEL CODE: 1CW950 HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS : 1-14 , YADA-MINAMI 5-CHOME , HIGASHI-KU, NAGOYA , JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission.

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