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Type UM (5t , 10t)
Standard Version
☆ Be sure to hand this instruction manual to the person in charge of facilities before starting
☆ Be sure to have the person in charge of facilities and operators read this manual thoroughly before
starting operation.
Instruction Manual PHN14A003-A


Table of Contents

Summary of Contents for Mitsubishi Electric UM 5t

  • Page 1 Instruction Manual PHN14A003-A MITSUBISHI HOIST Type UM (5t , 10t) INSTRUCTION MANUAL Standard Version ☆ Be sure to hand this instruction manual to the person in charge of facilities before starting operation. ☆ Be sure to have the person in charge of facilities and operators read this manual thoroughly before starting operation.
  • Page 2 Safety Precautions That Must Be Observed ■ The following table explains the types of hazards and their degree of ■ Explanation on symbols seriousness associated with incorrect operation or handling. Prohibition Indicates a situation of immediate danger that may result in death or Danger (Things you must not do or attempt by serious injury if not avoided.
  • Page 3 Warning ● Never attempt to lift a load that exceeds the rated capacity. ⋅ See the rating plate on the hook block for the rated capacity. ● Do not let anyone ride on or step on the suspended load. Never use the crane to transport or lift a person. ●...
  • Page 4: Table Of Contents

    Contents Checking Products and Regulatory Restrictions ..............1 Checking When You Receive the Hoist ................1 Hoist Crane Application Chart (Shaded area) ..............1 Regulatory Requirements ....................2 Applicable codes and norms ....................4 Installation Instructions ...................... 6 Installation of Hoist and Stoppers ..................6 Ground Wiring and Installing Earth Leakage Circuit Breaker ..........
  • Page 5: Checking Products And Regulatory Restrictions

    Checking Products and Regulatory Restrictions Checking When You Receive the Hoist When you receive the hoist, check it as follows. (1) Check that the hoist corresponds to your purchase order (by the nameplate). (2) Check that the hoist is not damaged during transportation. (3) Check that the insulation resistance of each electrical component with a 500 V insulation resistance tester (or a megger tester).
  • Page 6: Regulatory Requirements

    Caution ● Never operate the crane beyond the specified duty factor or the allowable number of startup cycles. ⋅ Or else, it deteriorates the strength of the parts and components of the crane, possibly causing the suspended load to fall off. ・Regulatory Requirements Warning ●...
  • Page 7 Suspended load Slinging ≥0.5 t <1 t ≥1 t <0.5 t (Ls) (Sk) (Sl) (Jb) (Sp) Slinging (Sl) (Jb) (Sp) (Sl) (Jb) General personnel Applicable clauses of crane safety code — Clauses 221 and 222 (Ls) ..Personnel who have license to operate cranes (Sp) ..
  • Page 8: Applicable Codes And Norms

    Applicable codes and norms The hoist crane is designed and manufactured to the Electric Wire Rope Hoist per JIS C 9620. The regulations specified in the previous section “Checking Products and Regulatory Restrictions” apply when the hoist crane is operated in Japan. The hoist crane also complies with the international standard of ISO 4301-1.
  • Page 9 Table4-Class of utilization of mechanisms Class of Total duration of use h Remarks utilization Irregular use 1600 3200 Regular light use 6300 Regular intermittent use Irregular intensive use 12500 25000 50000 Intensive use 100000 Table5-Nominal load spectrum factor for mechanisms,K State of Nominal load Remarks...
  • Page 10: Installation Instructions

    Installation Instructions Installation of Hoist and Stoppers Consult your dealer or the our company about the rail and hoist installation. Be sure to have a Box- rail specialist firm carry out the installation. (For installation of a 3t or heavier machine, it is necessary to acquire permission for production.) If traversing distance is too long, and connection of Box -rail...
  • Page 11: Electrical Wiring

    ○ For suspended hoists Remove paint coating and rust from the point of installation. Install it on a steel structure that complies with Class C or Class D electrical grounding requirements. (Make sure that the main body will not be electrically insulated.) When the hoist is installed on a wooden structure, ground the hoist main body with electrical wire of 2.6 mm in diameter or greater.
  • Page 12 3. Others (1) Reactor installation If it is necessary to improve the power factor, or if it is necessary to install the hoist just below a high-voltage power supply unit (1,000 kVA or more, cable length = 10 m or less), be sure to install a reactor.
  • Page 13: Installation On Box Rail

    Installation on Box-rail The Box Rail can be used in two or three ways. Before shipment, the I-beam width has been set as shown in the following table. Change the spacer position as shown in Fig. 1-1 through Fig. 1-2 depending on the I-beam to be used. Traversing side plate Washer Spacer...
  • Page 14 Wheel Box Rail With flange After lifting the hoist, loosen the nut once with no load. After that, eliminate the gap between the clamping bolt and the frame bolt hole, and then tighten the nut again. If there is a gap between the clamping bolt and the frame bolt hole, the wheel may be lifted, or the hoist main body may be inclined.
  • Page 15: Adjusting The Pushbutton Pendant Height

    ・Adjusting the Pushbutton Pendant Height The pushbutton is hung with a wire rope. The upper end of the wire rope is clipped. Change the clipped position of wire rope, and then adjust the pushbutton height to the optimum position for the work. After adjustment, fix the excess cable with a bundling band to prevent sagging. Banding band Clip Clip...
  • Page 16: Test Run

    Test Run No-Load Operation At first, press the UP button, and check whether the hook is lifted. If the hook is lowered, exchange the connected terminals of the R-phase and T-phase wires with each other. The power cable has 3 wires: R-phase, T-phase, and grounding wires. To operate 2 or more hoists on the same trolley line, be sure to exchange the wires between the trolley pole and the electromagnetic contactor.
  • Page 17: Load Test Run

    Load Test Run (A) Rated load test run Hang a rated load, and lift and lower the load to check the effect of the brake. Run the hoist over the whole length to make sure that the I-beam and trolley wire for nonconformities. Then, conduct characteristic test and performance test.
  • Page 18: Operation

    Operation After turning on the power of the UM-H type, the lifting and lowering operations will be performed in the inverter mode. After turning on the power of the UM-S type, the lifting, lowering, and traversing operations will be performed in the inverter mode. (1) Inverter-driven lifting/lowering operation The UP and DOWN pushbutton switches are the 2-step type.
  • Page 19: Inverter Lifting Operation Status Date Output Circuit

    Inverter Lifting Operation Status Data Output Circuit The CPU board has output terminals that can output the operation status data to the outside. These terminals are OUT1 through OUT4 terminals on the terminal board of the CPU board. OUT1 and OUT2 terminals: The status data “hook at upper limit position”...
  • Page 20: Setting/Changing Of Lifting/Lowering Operation Functions And Indication On Segment Indicator

    Setting/Changing of Lifting/lowering Operation Functions and Indication on Segment Indicator Switching of segment indicator mode (basic setting mode, extended setting mode, and history display mode): When the power is turned on, the segment indicator will enter the basic setting mode. Press and hold down the button for 2 seconds or more to switch the segment indicator mode.
  • Page 21 Settings before delivery from factory Conditions factory-set Function Setting range Remarks before delivery Low-speed lifting 9 Hz Low-speed lowering 6 Hz 6 - 60 Hz High-speed lifting 60 Hz Frequency High-speed lowering setting No-load high-speed lifting 90 Hz No-load high-speed lowering 10 mm below the Upper-limit stop point...
  • Page 22 List of functions of basic setting mode Press the button to switch the setting mode. (The setting mode will be switched cyclically). Frequency display mode Frequency setting Operation limit No-load high-speed function Overload stoppage mode positions setting mode setting mode function setting mode Press the button to...
  • Page 23 • No-load high-speed function setting mode If the No-load judgment level is raised, the No-load high-speed operation will be smoothly started (No-load high-speed operation can be started even if the load is heavier). If the No-load high-speed function for lifting or lowering operation is disabled, will flash.
  • Page 24 Examples of basic settings (1) Follow the procedure shown below to increase the lifting low-speed (to increase the frequency): Power-on Press this button several times, or press and hold down this button for several seconds to change the set frequency (speed) value. (2) Follow the procedure shown below to set the current hook position as the upper-limit stop point: Power-on...
  • Page 25 List of functions of history display mode Press the button to switch the setting mode. (The setting mode will be switched cyclically). Error history Number of starting times Operation time display mode display mode display mode Press the button to switch the Press the button to switch the Press the...
  • Page 26: Error Detection Function

    Error Detection Function If an error is detected, the 7-segment LED indicator will flash the error number, and the hoist will be stopped. In this case, release the pushbutton switch, and then press it again, or stop supplying the electric power, eliminate the cause of the error, and then restart operation. List of lifting/lowering errors Error Description of error...
  • Page 27: Maintenance And Inspection Of Brake

    Maintenance and Inspection of Brake Electromagnetic Hoisting Brake The hoisting brake is located on the end face of the hoisting motor. The brake stops and holds a load. For the 5t、10t types, the brake gear is engaged to the motor shaft. The 5t、10t types are provided with an automatic adjusting device that keeps the gap constant between the iron cores even if the brake disk is worn out.
  • Page 28 Pressing plate Electromagnetic Braking plate brake casing Brake disk Movable core Adjusting Stationary core ring Retaining spring Brake coil ction Helical compres- sion spring (Assembly bolt) Motor shaft Brake gear Packing DC electromagnetic brake (5) Fit a new brake disk to the motor shaft or the brake gear. Lightly turn the brake disk clockwise and counterclockwise with your hand to check for backlash.
  • Page 29 (9) Remove the assembly bolt used in Step (6), fit the spring, and put the lid. Evenly tighten the bolts in the same matter when they were loosened. Adjusting ring When the braking When the braking plate is new. plate is worn out. Points of Maintenance (1) Checking the brake disks for wear Lining...
  • Page 30: Traversing Electromagnetic Brake

    Wear limit Wear limit Adjusting ring Chamfer the edge C0.2 or less Pressure plate Wear limit gauge Inspection window Wear limit Edges of the shoulders of the pressure plate and the adjusting ring Wear limit gauge that can be seen through inspection window ・...
  • Page 31: Inspection And Maintenance Of Wire Rope

    Inspection and Maintenance of Wire Rope Check the wire rope during daily inspection, and check the rope ends, equalizer sheave and drum winding part during monthly inspection. If the rope strands have been broken or the rope has been deformed, immediately replace the rope with a new one. (It is recommended to prepare a spare rope for replacement.) Replacing the Rope Regarding the 2-fall type, remove the pin of the stationary side, and the rope can be removed easily.
  • Page 32: Structure, Disassembly And Re-Assembly Of Reduction Gears

    Structure, Disassembly and Re-assembly of Reduction Gears Hoisting unit(Main reducer) The simplified 2-step speed reducer with helical gears is adopted for the hoisting unit. To disassemble this unit, sequentially remove the parts from the outside. Important points for disassembly and reassembly are described below: (1) Remove the helical gear while turning the gear along the helix angle.
  • Page 33: Hoisting Unit(Sub Reducer)

    Hoisting unit(Sub reducer) The sub reduction gear unit is installed in the drum on the side of the hoisting motor. The simplified 1-step speed reducer with helical gears is adopted for the hoisting unit. To disassemble this unit, sequentially remove the parts from the outside. Important points for disassembly and reassembly are described below: (1) Remove the helical gear while turning the gear along the helix angle.
  • Page 34: Traversing Unit

    Traversing Unit The simplified 2-step speed reducer is adopted for the traversing unit. The gears are sealed in the gearbox, and the grease lubrication system is adopted. For the double-rail type, the simplified 2-step speed reducer is also adopted. In addition, the inner gearbox grease lubrication system is also adopted for this type.
  • Page 35: Maintenance And Inspection

    Maintenance and Inspection Hoist check items are described in details below. Crane Safety Code (Clauses 34, 35 and 36) prescribes to carry out daily inspection and periodic self-imposed inspection. Be sure to carry out the maintenance and inspection. Daily Inspection of Hoist Before starting the daily work, the person responsible shall operate the hoist without load, and check the following points.
  • Page 36 Danger ● Never modify any part of the crane or its accessories. ● Be sure to use Mitsubishi genuine parts only. Warning ● Be sure to turn off the power before starting maintenance, inspection or repair. ● Only the personnel with the expert knowledge designated by the firm are allowed to maintain, inspect or repair the crane. ●...
  • Page 37: Monthly Inspection

    Monthly Inspection The person responsible for maintenance of hoist shall check the following items directly touching the hoist, and repair defective parts. The time of inspection of each part shall be determined depending on importance from the viewpoint of safety, difficulty in maintenance, frequency of uses, and wearability. The parts are classified as shown below.
  • Page 38 Month Check item Description Date of Problem completion and remedy of repair Check the hook for cracking, wear and Check for visually detectable ab- deformation. normalities. Check the slinging tools for abnormalities. Check for deformation, slack and breakage. Check the traversing side plates and nuts Visually check the side plates for for looseness.
  • Page 39 Items to be checked every 3 or 6 months and to be regarded as important Classes B and C items from the viewpoint of safety. Frequently used parts shall be checked every one to three months. Month Date of Check item Description Problem completion...
  • Page 40: Annual Inspection

    (wear and backlash). The inspection results shall be stored for three (3) years. * Before providing maintenance services, please consult the nearest office of Mitsubishi Electric Hoist Corporation. - 36 -...
  • Page 41: Lubrication

    ・ Lubrication Please execute an inspection as well as oiling in accordance with the following table. However, the table will provide typical example data relative to a standard hoist, and therefore, the standard of lubrication oiling can be substantially varied in response to usage frequency as well as usage condition.
  • Page 42: Operation Limit Of Main Parts

    ・ Operation Limit of Main Parts Part Limit Part Limit When the depth of wear on the surface 10% of the number Strand Hoist gear reaches 10% of the tooth thickness of strands in one breakage (Fig. 3) twisted wire Reference replacement When the depth of wear on the surface...
  • Page 43: General Troubleshooting

    All troubles and nonconformities cannot be described here. General troubles are listed below for your reference. Most of troubles not listed below are caused special factors. Regarding such troubles, consult the nearest distributor or Mitsubishi Electric Hoist Corporation. General troubleshooting Problem...
  • Page 44 Cause Remedy Problem 5. The 2nd-stage limit (1) Incorrect connection of power supply line (1) Exchange the phases R and T switch operates. of the power supply. (2) Wire rope wound reversely (3) Although the use of the no-load high-speed (2) Set the upper limit correctly.
  • Page 45 Problem Cause Remedy 12. The motor overheats (1) Inching operation is performed too frequently. (1) Apply a special design. (2) Electromagnetic brake not released. (2) See Item 13. (3) Operating time long (3) Adopt the same remedies as Item 10, or do not use the motor too frequently.
  • Page 46 Problem Cause Remedy 23. The overload alarm (1) The power supply line is not correctly (1) Correctly connect the power does not function connected to the board. supply line. Connect “1” properly. and “S” to “A” and “B” on the board.
  • Page 47 Inspection of Power Supply System (Measurement of lowest voltage at start up) Inspection procedure Judgment and remedy 1. Turn off the power switch to the trolley line. Acceptable if all the three phases are read 200-220 V (up Connect a voltmeter or electric tester near the to 240 V for 60 Hz).
  • Page 48: Developed Connection Diagram Of Electric Hoist

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  • Page 51: Structural Drawing Of Hoist Main Body

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  • Page 52: Structural Drawing Of Electric Traversing Unit

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  • Page 56: Structural Drawing Of Hook Block

    Structural Drawing of Hook Block (10t) PG49976 - 52 -...
  • Page 57: Procedure For Straightening Entangled Wire Rope

    Procedure for Straightening Entangled Wire Rope When the wire rope has been twisted (entangled), straight it in the following procedure. Checking the direction in which the wire rope has been entangled Check the direction in which the wire rope has been entangled. * Definition of entanglement ..
  • Page 58 If the hoist hook block has been twisted in the Z direction, lower the hook block on to the ground to sag the wire rope, and give several turns (number of twists + 1 twist) to the wire rope, turning the wire rope in the direction shown below. (In the case of the 4-fall type, carry out this operation on each side.) Ex.: In the case of the 2-fall type shown in Item 1 Number of twists + 1 twists...
  • Page 59: Warrantee

    1) Expense of inspection, adjustment, lubrication or cleaning 2) Repair expense done by any party other than the authorized firms or representatives of Mitsubishi Electric FA Industrial Products Corporation 3) Any expense secondary to repair or liquidated damage consequent to repair due to unavailability of this hoist.
  • Page 60 MITSUBISHI ELECTRIC FA INDUSTRIAL PRODUCTS CORPORATION Specifications subject to change without notice.

This manual is also suitable for:

Um 10t

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