Mitsubishi Electric JR Series Instruction Manual

3-phase squirrel-cage induction motor


Make sure that this Instruction Manual is delivered to the end user of this motor.


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Summary of Contents for Mitsubishi Electric JR Series

  • Page 1 3-PHASE SQUIRREL-CAGE INDUCTION MOTOR MODEL JR-SERIES, HR-SERIES INSTRUCTION MANUAL Notice Make sure that this Instruction Manual is delivered to the end user of this motor. BAN-S-6402-D...
  • Page 3 3-PHASE SQUIRREL-CAGE INDUCTION MOTOR SAFETY PRECAUTIONS FOR 3-PHASE SQUIRREL CAGE MOTOR Thank you for purchasing the Mitsubishi motor. Before starting use of this 3-phase squirrel cage motor (before starting installation, operation, maintenance or inspection, etc.), always read this manual and other enclosed documents thoroughly to ensure correct use.
  • Page 4 CAUTION [General] • Do not use the motor outside its specifications. Failure to observe this could lead to electric shocks, injuries or damage, etc. (Refer to page 1.) • Do not insert fingers or objects into the motor openings. Failure to observe this could lead to electric shocks, injuries or fires, etc. (Refer to page 9.) •...
  • Page 5: Table Of Contents

    CONTENTS Page 1. ACCEPTANCE INSPECTION ................. 2. TRANSPORTATION AND STORAGE ..............3. SHAFT LOCK HARDWARE ................... 4. INSTALLATION ....................... 5. COUPLING WITH MACHINE .................. 6. APPLICATION OF BELTS AND PULLEYS ............7. WIRING ........................8. INITIAL STARTING ....................9. REGULAR OPERATION ..................10.
  • Page 6: Acceptance Inspection

    1. ACCEPTANCE INSPECTION Check the following points after the motor has been delivered and before installing it. Before opening the package, confirm the orientation. If the package is crated, take care for the nails when unpacking. a. Check the output (kW), poles (POLE), type (TYPE), voltage (V) and frequency (Hz) indicated on the nameplate.
  • Page 7: Shaft Lock Hardware

    3. SHAFT LOCK HARDWARE Motors that use roller bearings are provided with a shaft lock hardware to protect the roller bearings from damage due to movement and vibration of the shaft during shipment. (Refer to Fig. 1.) Before coupling the motor to the machine, loosen the installation bolt, and remove the fitting.
  • Page 8: Coupling With Machine

    5. COUPLING WITH MACHINE (1) Direct coupling (Refer to Fig. 2) Install the motor so that the center of the motor-shaft and the center of the partner machine's shaft are aligned. Place a linear under the motor or machine leg if necessary, and completely adjust. Table 1 Allowable mounting dimensions of coupling Kind of Dimension...
  • Page 9 (b) Obtain the center of t, apply a perpendicular load to the V-belt at this center point, and obtain the deflection force Td (N) where the deflection amount  at that point is the following value.  = 0.016  t (mm) (Refer to Fig. 4.) For example, the deflection amount for a distance of 1m between the belt contact would be 0.016 ...
  • Page 10: Application Of Belts And Pulleys

    (4) Chain drive Adjust the chain length so that a slight slackness is formed when the gears are aligned. The shaft-to-shaft distance should be larger than the diameter of the larger gears plus the diameter of the smaller gears. Consult with the chain manufacturer for the max. speed and chain lubrication, etc. (5) Coupling with internal shaft by key If the shaft is fitted loosely in the hole, rotary eccentric load will be generated, and creep may occur on the fitting surfaces of the motor bearing.
  • Page 11 (2) Use an arm-type pulley that has a ventilation hole so that the pulley does not obstruct the ventilation cooling. Provide as large as possible of a ventilation hole if a flat plate type is to be used. (Refer to Fig. 5.) (3) The V-Belt speed is as follows.
  • Page 12: Wiring

    7. WIRING (1) Outline of wiring Wiring work must be done according to the Guide book of electric equipment standards and Interior wiring code standards by a trained worker using suitable wiring tools. Working with live wires is dangerous. Always turn the power OFF before starting the work. The outline of the wiring requirements is shown in Table 5.
  • Page 13 (2) Grounding (earthing) The insulation material of the motor is an insulator and also is a conductor. Thus, the motor has a capacitance between the ground. If the motor is not grounded, an induction voltage that is approx. 50 to 60% of the power voltage may be generated in proportion to this capacitance between the frame and ground.
  • Page 14: Initial Starting

    (5) Precautions for - starting method Always observe the following precautions as if the motor is installed in a dusty and humid environment and the voltage will always be applied when the neutral point is cut off during motor stopping, the insulation may deteriorate and burn. (a) when selecting the -...
  • Page 15: Vibration

    Table 8 Temperature rise limit (For ambient temperature of 40°C) (Unit: K (Kelvin)) Heat-resistance class 120 (E) Heat-resistance class 130 (B) Heat-resistance class 155 (F) Section Resistance Thermometer Resistance Thermometer Resistance Thermometer method method method method method method Winding (standard value) –...
  • Page 16: Maintenance

    11. MAINTENANCE The quality of maintenance will greatly affect the motor life. (1) Inspection and maintenance schedule a. Motors used sometimes, such as emergency motors or gate motors, absorb moisture during the long-term suspension. This can cause the insulation resistance to drop. Therefore, daily maintenance is required.
  • Page 17: Servicing Of Coils And Insulation

    12. SERVICING OF COILS AND INSULATION (1) When coil has absorbed moisture Measure the insulation resistance with a megger tester when the coil has absorbed moisture during shipment, storage or when the motor has been stopped for a long time, and at the times specified in the maintenance plan.
  • Page 18 (2) Grease replenishment method The motor having an open bearing and overgrease prevention structure has the following two types of structures. Replenish each type with the following procedure. In either case, take caution to rotating parts such as the shaft when replenishing or discharging the grease.
  • Page 19 (3) Bearing tables Table 11 Bearing tables Totally enclosed fan-cooled type Horizontal type Vertical type and flange type Opposite Opposite Motor Frame No. of Coupl- Drive end Motor Frame No. of Drive end drive end drive end type symbol poles side type symbol...
  • Page 20 (6) Bearing noise The easiest way to check a bearing is to listen to the noise it generates. Listen to the bearing noise during operation so that abnormalities can be found at an early stage. Note that the final diagnosis of the bearing also involves the vibration, temperature and discharged grease.
  • Page 21 Table 13 Cause of noise Measures This noise is caused by a resonance of the natural vibration of the vibration 1) Use grease with a good lubrication system composed of the ball bearings axial spring and rotor, and the vibration performance.
  • Page 22: Disassembly Of Motor And Removal Of Bearings

    14. DISASSEMBLY OF MOTOR AND REMOVAL OF BEARINGS (1) Disassembly of motor When disassembling the motor, observe the following instructions. Press with a press-machine a. Put matchmarks on the parts so that Shielded ball the positions of the installed parts Support plate bearing can be checked on reassembly.
  • Page 23 c. When installing the bracket Apply a thin layer of grease (Alvania S2 or the like) to the bearing housing. d. Outdoor type motor (a) Before reassembling, apply a sealing agent (ThreeBond 1102D or the like) to the frame fitting surface of the bracket.
  • Page 24: Troubleshooting, Servicing And Product Warranty

    b. Installation of an open type ball bearing or roller bearing (a) Place the bearing for 30 minutes in clean oil heated to 90°C. Never let the oil temperature exceed 100°C. Fit the heated bearing onto the shaft, and do not move it until it cools down. When mounting onto the shaft, always wear protective equipment to prevent burns, etc.
  • Page 25 Table 16 Troubleshooting Phenomenon Cause Remedy 1. The motor can be 1. The switch or wire contact is faulty. 1. Adjust or replace the contact section. manually rotated in either 2. The fuse or a wire is broken. 2. Inspect and repair or replace. direction.
  • Page 26 Phenomenon Cause Remedy 1. The belt disconnects. 1. Overload. 1. Reselect the motor rating. 2. The partner machine is faulty and belt 2. Inspect and repair the partner does not rotate. machine. 3. The belt tension is incorrect. 3. Set the belt again. 2.
  • Page 27: Motor Construction Drawings

    17. MOTOR CONSTRUCTION DRAWINGS SF-JR (V) and SF-HR(V) type motor construction drawings ● SF-JR, SF-HR (80M, 90L) ● SF-JRV, SF-HRV (80M, 90L) ⑫ ⑤ ① ⑩ ② ③ ④ ⑤ ⑫ ① ⑩ ② ③ ④ ⑤ ⑤ ⑭ ⑧ ⑧...
  • Page 28 ● SF-JR, SF-HR (160M to 180L) ● SF-JRV, SF-HRV (160M to 180L) ⑥ ① ⑪ ② ③ ④ ⑤ ⑥ ⑬ ① ② ③ ④ ⑤ ⑥ ⑥ ⑮ ⑮ ⑨ ⑨ ⑭ ⑬ ⑦ ⑪ ⑩ ⑦ ⑭ ⑩ ⑨...
  • Page 29 [Supplement] Structure of outdoor type motor The major parts of the outdoor type motors (IP44) are the same as those of the indoor type motors. Further, special consideration is given to the following items to enhance the waterproofing effect. (1) Shaft through hole ..Provided with flinger, V-ring and end cover. The parts used for horizontal type motors with legs are shown in Table 17.
  • Page 30: Disposal

    18. DISPOSAL The following laws apply when disposing of this product. Consideration must be given to each regulation. The following laws are effective in Japan. When disposing of this product outside of Japan (overseas), local laws shall take precedence. Make an indication or notification on the product, etc., if necessary.
  • Page 31: Chemical Substances

    20 . CHEMICAL SUBSTANCES (1) Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical Products This symbol mark indicates an environment protection usage limit applied to electrical and electronic products sold in China, and is based on the “Requirements of Concentration Limits for Certain Restricted Substances in Electrical and Electronic Products”.
  • Page 32 (1)电器电子产品有害物质限制使用标识 根据《电器电子产品有害物质限制使用管理办法》 ,该标记适用于在中国销售的电器电子 产品,其中的数字为产品的环保使用期限。只要遵守本产品在安全和使用方面的注意事 项,从生产日算起的环保使用期限内不会造成环境污染或对人体、财产产生深刻的影响。 (注) 产品正常使用终结废弃时,有关电器电子产品的回收、再利用等要遵守各自治体的法律法规的要求。 Note: This symbol mark is for China only. (2)含有有害6物质的名称,含有量,含有部品  本产品中所含有的有害6物质的名称,含有量,含有部品如下表所示。 产品中有害物质的名称及含量 有害物质 部件名称 铅 汞 镉 六价铬 多溴联苯 多溴二苯醚 (Pb) (Hg) (Cd) (Cr(VI) ) (PBB) (PBDE) 构造部件 × ○ ○ ○ ○ ○ 转子 ○ ○ ○ ○ ○ ○ 定子...
  • Page 33 MEMO...
  • Page 34 New publication effective Aug. 2017. Specifications subject to change without notice. IB(NA)-0100004-D (1708) IP Printed Japan Printed in Japan on recycled paper.

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