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

Mitsubishi Electric MELSERVO EMC Installation Manuallines

Electric ac servo system
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Mitsubishi Electric AC Servo System
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Summary of Contents for Mitsubishi Electric MELSERVO EMC

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

  • Page 2: Table Of Contents

    CONTENTS 1. SUMMARY 1 - 1 to 1 - 2 2. EMC DIRECTIVE 2 - 1 to 2 - 2 3. EMC COUNTERMEASURES 3 - 1 to 3 -10 3.1 Basic EMC countermeasures ........................3 - 1 3.2 Cabinet design ............................3 - 1 3.3 Filter wiring and installation ........................
  • Page 3 6.3 Reasons why the shield must be grounded with the P clip or U clip ............6 - 3 6.4 Connecting multiple servo amplifiers to one EMC filter (1: n connection) ..........6 - 4 6.4.1 Selection method ..........................6 - 4 6.4.2 Selection example ..........................
  • Page 4 1. SUMMARY 1. SUMMARY We have carried out EMC standard compliance confirmation tests with the servo amplifier in the installation environment described in this manual. After incorporating the servo amplifier in the machine or equipment, confirm the EMC standard compliance of the entire machine or equipment on customer side. For the EMC countermeasures, refer to this guideline or the instruction manual of the servo amplifier used.
  • Page 5 SUMMARY MEMO 1 - 2...
  • Page 6 2. EMC DIRECTIVE 2. EMC DIRECTIVE Mitsubishi Electric general-purpose AC servo MELSERVO complies with products standard EN 61800-3. This directive largely regulates the following two withstand levels. (1) Emission (EMI: Electromagnetic Interference) Capacity to prevent output of obstructive noise that adversely affects external sources.
  • Page 7 2. EMC DIRECTIVE MEMO 2 - 2...

  • Page 8: Emc Countermeasures

    3. EMC COUNTERMEASURES 3. EMC COUNTERMEASURES CAUTION The servo amplifier must be installed in the metal cabinet. 3.1 Basic EMC countermeasures POINT According to the NFPA79 approved by the United States, when the shielded wire is not used for wiring between a servo amplifier and a servo motor, the wiring must be insulated from wiring of other control or signal circuits.
  • Page 9 3. EMC COUNTERMEASURES (3) Weld or screw close the joining sections of the cabinet's top plate and side plate. Keep the joining clearance to 10cm or less. The diameter of the openings on the cabinet such as the ventilation hole should be 10cm or less.
  • Page 10 3. EMC COUNTERMEASURES (5) To take preventive measures against the noise of the input power source cable in the cabinet, install the shielding partition at nearby site where the power is input so that the input power cable does not receive harmful effects of the radiated noise.

  • Page 11: Filter Wiring And Installation

    3. EMC COUNTERMEASURES 3.3 Filter wiring and installation POINT For when multiple servo amplifiers are connected to one EMC filter, refer to section 6.4. (1) Wire the servo and filter as shown below. Servo amplifier Molded- Power Magnetic Main circuit Servo case supply...
  • Page 12 3. EMC COUNTERMEASURES (3) Installation of filter. Install the servo amplifier and EMC filter on the same cabinet. Install the filter on the right or left side of the servo amplifier, as shown below. (For details of the EMC filter, refer to section 4.2.) The surface inside the cabinet where the filter is to be installed must be bare metal or metal plated surface so that the rear surface of the filter electrically contacts the cabinet.

  • Page 13: Cable Treatment

    3. EMC COUNTERMEASURES 3.4 Cable treatment (a) Securely earth the cabinets 1 and 2, and the servo motor. (b) Keep the main circuit power supply cable of the servo amplifier, power cable of the servo motor, and wire for the control circuit signal apart (30 cm or more). These cables must not be routed in close parallel or bundled.
  • Page 14 3. EMC COUNTERMEASURES (1) Servo motor power cable POINT If removing the insulator of a shield causes electrical shock or injuries and threatens the machinery safety, additional protective covers or enclosures may be required. Earth with surface paint removed Cabinet Cabinet Earth with P or U clip Conduit connector...
  • Page 15 3. EMC COUNTERMEASURES 4) Directly earth the shield. It is not recommended to solder the wire to the braided wire (shield) and ground with its end. Solder Example of earthing with wire soldering 5) When not using a shield cable for the servo motor power cable, put the cable into a metal conduit. 6) Earth the servo motor power cable on the cabinet side with the conduit connector and cabinet side wall.
  • Page 16 3. EMC COUNTERMEASURES (3) Controller connection (command) cable (except for SSCNET III cable) 1) If controller and servo amplifier are in the same cabinet Use a shielded twisted pair cable, and earth on the controller and servo amplifier side with a P clip or U clip.
  • Page 17 3. EMC COUNTERMEASURES (5) Regenerative option connection cable For the regenerative option cable, use a twisted cable with shield or a twisted cable covered with shield braid. Earth the shield on the option and servo amplifier with a P clip or U clip. The drawing shows the treatment for when the regenerative option is installed outside the cabinet.

  • Page 18: Emc Countermeasure Parts

    4. EMC COUNTERMEASURE PARTS 4. EMC COUNTERMEASURE PARTS This chapter explains parts used in EMC countermeasures. For details of the parts, contact the parts manufacturer. 4.1 Noise filter (For controller power supply) For the noise filter installed to the controller, refer to the manual of the controller used. 4.2 EMC filter (For servo amplifier power supply) POINT For connection with servo amplifiers, refer to each servo amplifier instruction...
  • Page 19 4. EMC COUNTERMEASURE PARTS (1) Combination of 22kW or less servo amplifiers and filters (a) For MR-J5 series 1) Manufactured by COSEL Co., Ltd. Recommended filter/Operating temperature range: -40 °C to 85 °C (Category Mass Servo amplifier C2, C3 (Note)) [kg] Model Rated current [A]...
  • Page 20 4. EMC COUNTERMEASURE PARTS Recommended filter (COSEL Co., Ltd) Mass Servo amplifier Rated current Rated voltage Leakage [kg] ([lb]) Model [VAC] current [mA] MR-J4-11K to MR-J4-22K FTB-100-355-L (Note) 5.3 (11.69) MR-J4-22K 4 FTB-80-355-L (Note) 5.3 (11.69) Note. A surge protector is separately required to use any of these EMC filters. (Refer to section 4.6.) (c) For MR-JN series Recommended filter (SOSHIN Electric Co., Ltd) Mass...
  • Page 21 4. EMC COUNTERMEASURE PARTS (f) For MR-J2-Super series POINT The production of the MR-J2-Super series was discontinued in August 2015. Recommended filter (DEM Manufacturing Ltd.) Servo amplifier Rated current Rated voltage Leakage Mass [kg] ([lb]) Model [VAC] current [mA] MR-J2S-10 to MR-J2S-100 SF1252 10.5...
  • Page 22 4. EMC COUNTERMEASURE PARTS (2) Combination of 30kW or more converter unit, drive unit and filter (a) For MR-J4 series Recommended filter (SOSHIN Electric Co., Ltd) Mass Converter unit Drive unit Rated current Rated voltage Leakage [kg] ([lb]) Model [VAC] current [mA] MR-J4-DU30K HF3200A-UN...
  • Page 23 4. EMC COUNTERMEASURE PARTS (3) Combination of a simple converter and filters If the total length of a servo motor power cable is 50 m or less, select a filter recommended in section 4.2 (1) (a) 1). If the total length of the servo motor power cable is more than 50 m, select a filter which satisfies the following conditions.

  • Page 24: Ferrite Core (Data Line Filter)

    4. EMC COUNTERMEASURE PARTS [SF1252, SF1253 wire connection method] Flat bladed screwdriver Wire 1) Peel the wire insulator. Core length for SF1252 Insulator Core 14mm Core length for SF1253 2) Insert the core of the cable into the opening, and tighten with the slotted screwdriver. In addition, connect the cables to the terminals of SF1252 or SF1253 in a one-to-one connection.

  • Page 25: Shield Clamp Fitting

    4. EMC COUNTERMEASURE PARTS 4.4 Shield clamp fitting Generally, the earth of the shielded cable may only be connected to the connector’s SD terminal. However, the effect can be increased by directly connecting the cable to an earth plate as shown below. Install the earth plate near the servo amplifier for the encoder cable.
  • Page 26 4. EMC COUNTERMEASURE PARTS (2) For use of 2 line noise filters separately Servo amplifier Power (Converter unit) supply (4 times pass) (3) For use of 2 line noise filters closely Servo amplifier (Converter unit) Power supply (4 times pass) (4) For use of 4 line noise filters closely Servo amplifier (Converter unit)

  • Page 27: Precautions

    4. EMC COUNTERMEASURE PARTS 4.5.2 Precautions (1) When the line noise filter is used for the main circuit power side in the servo amplifier (converter unit), the effect of the filters is produced as the number of passes increases. The appropriate number of passage is four times.

  • Page 28: Surge Protector

    4. EMC COUNTERMEASURE PARTS 4.6 Surge protector POINT The surge protector is required to use the EMC filter with a 200 V class servo amplifier. The surge protector is required to use the EMC filter manufactured by COSEL with a 400 V class servo amplifier. To prevent damage due to the applied surge to the AC power supply line (lightning, sparks, etc.), connect the following surge protector (Okaya Electric Industries) to the main circuit power supply (L , and L...
  • Page 29 4. EMC COUNTERMEASURE PARTS MEMO 4 - 12...

  • Page 30: Connection Example For Emc Countermeasures

    5. CONNECTION EXAMPLE FOR EMC COUNTERMEASURES 5. CONNECTION EXAMPLE FOR EMC COUNTERMEASURES 5.1 For 22kW or less of 1-axis (Note 1) Cabinet: Section 3.2(1), (2), (3), (4) (Note 1) EMC filter: Section 4.2 (Note 1) Surge Magnetic Filter Cable clamp protector U, V, W contactor...

  • Page 31: For 1Kw Or Less Of Multi Axis

    5. CONNECTION EXAMPLE FOR EMC COUNTERMEASURES 5.2 For 1kW or less of multi axis (Note 1) Cabinet: Section 3.2(1), (2), (3), (4) (Note 1) EMC filter: Section 4.2 (Note 1) Surge Magnetic Filter Cable clamp protector U, V, W contactor : Section 3.4(1), 4.4 (Note 3) (Note 1)

  • Page 32: For 30Kw Or More

    5. CONNECTION EXAMPLE FOR EMC COUNTERMEASURES 5.3 For 30kW or more POINT The production of the MR-J2-Super series was discontinued in August 2015. (Note 1) Cabinet: Section 3.2(1), (2), (3), (4) (Note 1) EMC filter: Section 4.2 (Note 7) Surge Magnetic Filter protector...
  • Page 33 5. CONNECTION EXAMPLE FOR EMC COUNTERMEASURES Note 1. Specific EMC countermeasures are shown as 2. Shielded cables are shown as 3. Shielded cables or conduits are shown as 4. The abbreviations of the terminals are P and N for MR-HP30KA or MR-HP55KA4. 5.

  • Page 34: Supplement

    SUPPLEMENT 6. SUPPLEMENT 6.1 Reasons why the shield is grounded on both the cabinet side and the servo motor chassis side As for a countermeasure against radiated emissions from inverters or servo amplifiers, multiple point grounding, in which grounding is performed at the cabinet exit and both ends of the cable between the servo amplifier and the servo motor, tends to decrease unnecessary noise.

  • Page 35: Grounding The Shield At Both Ends Of The Cable

    6. SUPPLEMENT 6.1.2 Grounding the shield at both ends of the cable The following figure shows only wiring of the servo motor power cable. Use a shielded wire for the detector cable as well as the power cable. Figure 6.4 shows one of measurement result examples. It does not guarantee the effect of the countermeasure. Cabinet Grounding with the P or U clip 10 cm...

  • Page 36: Reasons Why The Grounding Position In The Cabinet Is Specified To Be 10 Cm Or Less From The

    6. SUPPLEMENT 6.2 Reasons why the grounding position in the cabinet is specified to be 10 cm or less from the cabinet exit Various devices are installed inside the cabinet. The devices radiate or transmit significant unnecessary noise. The generated noise may not be held inside the cabinet depending on a cable wiring method. When unnecessary noise is superimposed in the cable, grounding the cable near the cabinet exit should prevent the noise from flowing outside the cabinet.

  • Page 37: Connecting Multiple Servo Amplifiers To One Emc Filter (1: N Connection)

    6. SUPPLEMENT 6.4 Connecting multiple servo amplifiers to one EMC filter (1: n connection) Confirm the EMC standard compliance of the entire machine or equipment on customer side. 6.4.1 Selection method Servo amplifier (First) Molded- Molded- case case Power Magnetic Main circuit Servo EMC filter...

  • Page 38: Selection Example

    6. SUPPLEMENT 6.4.2 Selection example The following figure shows a connection example of when three servo amplifiers (MR-J4-100A) are connected with one EMC filter. Servo amplifier Molded- Molded- case case Power Magnetic Main circuit Servo EMC filter circuit circuit supply contactor power supply motor...
  • Page 39 6. SUPPLEMENT MEMO 6 - 6...
  • Page 40 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 41 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-K...
  • Page 42 MODEL EMC INSTRUCTION GUIDELINES MODEL 1CW950 CODE HEAD OFFICE : TOKYO BLDG MARUNOUCHI TOKYO 100-8310 IB(NA)67310ENG-K (2007) MEE Printed in Japan Specifications are subject to change without notice.

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