Mitsubishi Electric UM 5t User manual

MITSUBISHI HOIST
Type UM (5t , 10t)
INSTRUCTION MANUAL
☆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.
Instruction Manual PHN14A003－A
Standard Version

Safety Precautions That Must Be Observed
■The following table explains the types of hazards and their degree of
seriousness associated with incorrect operation or handling.
! Danger Indicates a situation of immediate danger that may result in death or
serious injury if not avoided.
! Warning Indicates a dangerous situation that may result in death or serious injury
if not avoided.
! Caution Indicates a dangerous situation that may result in minor or moderate
injury or in only a property loss if not avoided.
1. Safety precautions for handling in general
Danger
!
● Control the duration of the product life. Totally overhaul the product or replace it with a new one before reaching the end
of the life.
Warning
●Do not allow anyone to operate the crane if he or she does not fully understand the contents of the instruction manual or
the meaning of the warning signs.
●Anyone without the required regulatory qualification must not operate the crane or arrange slings to lift a load. Do not
allow such a person to do the same.
!
●Be sure to check the crane and associated items before starting the work. Be sure to carry out the periodical voluntary
inspections.
Caution
!
●Keep the instruction manual until the product is no longer used. Make the instruction manual available in a place for ready
perusal at any time.
2. Installation and mounting
Danger
!
●Be sure to provide both ends of the rails of the cross and longitudinal travel tracks with stoppers.
●Check that the structure where the crane is to be installed has the required strength.
Warning
!
●Make absolutely sure that only a specialized subcontractor or persons with the expert knowledge are allowed to install the
crane.
●Install the crane only in an environment of the specified conditions. Avoid rain or water that the crane is not designed for.
●Be sure to ground the crane. In addition to the grounding, provide the electrical circuit with a ground fault circuit breaker.
3. Operation
Danger
●Check that the brake device operates normally before starting to use. Do not operate the crane if the brake device does not
operate normally.
●Do not operate the crane if the crane is damaged or if it generates abnormal noise or vibration.
●Never operate the crane if the wire rope has any of the following defects.
⋅The wire rope is kinked, deformed or corroded.
⋅If more strands than specified are broken or worn out.
●Do not attempt arc welding to the suspended load.
●Do not connect the ground cable of an arc welding machine to the wire rope.
●Never let the electrode of an arc welding machine come in contact with the wire rope.
●Never operate the crane if the sling device stopper on the hook is broken or damaged.
●Do not let the crane main body or the current collector (trolley) run into the stopper or the building structure.
●Do not operate the crane if the wire rope is not wound on the wire drum normally.
!
●Stop operating the crane immediately if the crane operates in the different direction from the intended pushbutton
instruction.
The crane operates incorrectly or abnormally, possibly causing an injury.
If you have to press any of the pushbuttons harder than usual, the particular pushbutton switch may be broken. Stop
operating the crane. Disassemble the pushbutton switch for inspection.
●If an earthquake occurs while operating the crane, immediately lower the load on the floor and turn off the crane power.
■Explanation on symbols
Prohibition
(Things you must not do or attempt by
all means.)
!Instruction
(Things you must do by all means.)
Be absolutely sure to ground
the crane.
!
!
!
!
!
!

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.
●Stay away from under a suspended load.
●Do not operate the crane if anyone is in the course of the crane motion.
●Do not move over the load above a person.
●Do not leave the operating position while the load is being suspended.
Do not operate the crane in a manner that the crane always carries a load.
●Always pay attention to the load while operating the crane.
●Do not operate the crane in a manner that the load or the hook block swings or sways.
●Do not use the limit switch for the over-wind prevention device to stop the lifting operation.
●Do not attempt to lift a load with the hoist not right above the load.
⋅Be sure to locate the hoist right above the load before lifting it.
●Do not use the crane to handle a fixed item such as the building structure.
●When lowering a load, do not release the wire rope to the extent that it exceeds the lower limit.
⋅Operate the crane in a manner that the wire rope always remains at least two turns on the drum. Do not operate the crane
if the wire rope is wound on the drum in the opposite direction.
●Do not turn over the suspended load in an unsafe manner.
⋅Use a dedicated turnover device to turn over the suspended load.
●Check the pushbutton for normal action and function before starting to operate the crane. Do not operate the crane if any
of the pushbuttons does not operate normally.
Caution
●Operate the crane only from the rated voltage which the crane is designed for.
●Do not apply braking effort by bragging (or rapid reversing the direction). Do not excessively jog the crane.
●Do not let the suspended load caught on other structure or wiring.
●Do not pull on the switch box cable hard with the cable caught on something.
●Never operate the crane beyond the specified duty factor or the allowable number of startup cycles.
●Do not remove the warning or caution labels affixed to the main body. Do not operate the crane with the warning or
caution labels left illegible.
●Before releasing the operation box from your hand, put it back to the naturally suspended position. Do not have the
operation box hit a person or a thing.
!
●Before operating the crane, check that the lower part of the hook rotates smoothly and freely.
●Be sure to engage the sling ropes and sling devices properly with the hook.
●Stop lifting the load once when the wire rope becomes tight.
●Keep clean the operation box so that dust or sand does not collect around the pushbuttons.
●Before releasing the operation box from your hand, put it back to the naturally suspended position. Do not have the
operation box hit a person or a thing.
●Make sure that the crane has a sufficient lift for the intended work.
●Be sure to turn off the power before leaving the operating position.
4 Maintenance, inspection and modification
Danger
●Do not use any part or device of the crane beyond its service limit.
Warning
●Never modify any part of the crane or its accessories.
●Never use any part or device other than the specified genuine parts or devices.
!
●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.
●Make sure that the crane is free of a load before starting maintenance, inspection or repair.
●If maintenance or inspection reveals a defect with the crane, do not use the crane until the defects is repaired and rectified.
●Do not use the brake linings beyond its wear limit.
Caution
!
●Before starting maintenance, inspection or repair, be sure to post or hang proper signs saying “Maintenance in progress”
or “NEVER turn on power” for positive indication
●The motors, brake devices and controllers may be very hot. Before starting maintenance, inspection or repair, make sure
such devices are safely cool.
●Adjust the brake device to the normal play.
⋅After reading the instruction manual, keep it at a place available for ready perusal for the personnel
involved in the crane.
⋅Be sure to place an order with us for any inspection that involves disassembling and reassembling the
crane or with our official dealers.
Attention
!
!
!
!
!

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 ..........................................6
Electrical Wiring................................................................................................................7
Installation on Box Rail .....................................................................................................9
Adjusting the Pushbutton Pendant Height .......................................................................11
Test Run................................................................................................................................12
No-Load Operation ..........................................................................................................12
Load Test Run..................................................................................................................13
Operation ..............................................................................................................................14
Inverter Lifting Operation Status Date Output Circuit...................................................15
Setting/Changing of Lifting/lowering Operation Functions and Indication on
Segment Indicator................................................................................................................16
Error Detection Function ....................................................................................................22
Maintenance and Inspection of Brake................................................................................23
Electromagnetic Hoisting Brake ......................................................................................23
Traversing Electromagnetic Brake...................................................................................26
Inspection and Maintenance of Wire Rope .......................................................................27
Structure, Disassembly and Re-assembly of Reduction Gears........................................28
Hoisting Unit(Main reducer)............................................................................................28
Hoisting Unit(Sub reducer)..............................................................................................29
Traversing Unit ................................................................................................................30
Maintenance and Inspection ...............................................................................................31
Daily Inspection of Hoist .................................................................................................31
Monthly Inspection ..........................................................................................................33
Annual Inspection ............................................................................................................36
Lubrication.......................................................................................................................37
Operation Limit of Main Parts.........................................................................................38
General Troubleshooting.....................................................................................................39
Developed Connection Diagram of Electric Hoist.............................................................44
Structural Drawing of Hoist Main Body............................................................................47
Structural Drawing of Electric Traversing Unit...............................................................48
Structural Drawing of Hook Block.....................................................................................51
Procedure for Straightening Entangled Wire Rope .........................................................53
Warrantee.............................................................................................................................55

－1－
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). (The hoist is acceptable if the insulation resistance
tester reads 1 MΩor greater in each measurement.)
* Insulation resistance test procedure
●Turn off the power.
●Connect the hoist power receive terminals R, S and T to short the R-S-T line.
●While turning on the hoist main body and the contactors of the hoist power receive
terminals R, S, and T sequentially in the manual mode, measure the insulation
resistance using the 500 V insulation resistance tester.
Write down the type designation and the manufacturing number that are described on the
nameplate. (For inquiries about your hoist, these pieces of information are necessary.)
Hoist Crane Application Chart (Shaded area)
Standard type application chart
Operating time of
hoisting
devices
Load condition
Less than
800 hrs
800 hrs or
more and less
than 1,600 hrs
1,600 hrs or
more and less
than 3,200 hrs
3,200 hrs or more
and less than
6,300 hrs
6,300 hrs or
more and less
than 12,500 hrs
12,500 hrs or
more and less
than 25,000 hrs
25,000
hrs or
more
Hoist crane usually handling less
than 50% of rated load A A A B C D E
Hoist crane usually handling 50%
or more and less than 63% of rated
load. A A B C D E F
Hoist crane usually handling 63%
or more and less than 80% of rated
load. A B C D E F F
Hoist crane usually handling 80%
or more of rated load. B C D E F F F
Applicable types
Type E Type R
TypeUR
Type M
Type S
Type U2
Type HU2
Type S special model
Type U2 special
model
Type HU2 special
model Large cranes
Symbols A through F (Class A through Class F) represent the crane structural standards application groups.
(Note) Class C types may be applied to hoist cranes requiring a lift of more than 12 meters.
Allowable duty time and start frequency
* The maximum start frequency per hour is shown in the above table.
* Special design is needed if the duty ratio is more than the above
value.
* Duty ratio: During 1 hour of hardest operation = Total of motor energized time (min)
60 ×100
Type
Allowable
duty
Type M (5t ,
10t)
Duty ratio (%) 40
Start frequency (cycles/hour) 240
Coutinuous
operating
time
50% of the rated load 8Hr
63% of the rated load 4Hr
80% of the rated load 2Hr
Crane type and applicable categories
Power plant cranes, cranes for disassembly and inspection A
Cranes in machine shops and assembly shops A
General workshop cranes B-D
Overhead cranes (with bucket, magnet) D-F
Ladle crane E-F
Charging crane F
Forge crane F
General purpose bridge cranes (with hooks) B-C

－2－
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
●Never attempt to use the crane for any purpose that has a person ride on.
⋅The person may fall off, causing an injury. It is prohibited by law to use the crane as a lifting device that carries a
person.
●Do not allow anyone to operate the crane if he or she does not fully understand the contents of the instruction
manual or the meaning of warning signs.
●Anyone without the required regulatory qualification must not operate the cranes or arrange slings. Do not allow
such a person to do the same.
Use of hoists is regulated by the labor safety and health code and related government ordinance
and ministerial ordinance. Refer to these regulations in detail for full compliance. The key
points are described as follows.
1. Application for Installation
To use this hoist as a crane or a simplified lift, you should submit an installation report or
installation notice to the local Labor Standards Inspection Office in accordance with the crane
safety code. See the table below.
Type of crane Capacity
Crane
manufacturer Crane user
Manufacturing
permit Installation notice
and performance
inspection
Installation
report Maintenance obligation
Crane Suspended
load
≥3 t ○○○
≥1/2 t <3 t ○○
Simplified lift Payload ≥1/4 t <1 t ○○
●Regarding the crane manufacturing permit, where a hoist crane is concerned, the hoist and
crane manufacturer must apply jointly.
●To use the hoist as a crane or a simplified lift, you should observe the crane structural
standard or the simplified lift structural standard.
●When the hoist is used, it is governed by the crane safety code.
2. Operator Qualification
To be associated with slinging 0.5t or heavier articles or with operating a hoist of 0.5t capacity
or greater, one must be qualified in accordance with ordinance by the Ministry of Labor. See
the table below.
Operation method Suspended load
<0.5 t ≥0.5 t <5 t ≥5 t
Monorail hoist (Ls) (Sk) (Sp)
General personnel
(Ls) (Sk) (Sp) (Ls) (Sk) (Sp)
Floor-operated (Ls) (Sk) (Sp) (Ls) (Sk)
Remote control or equipped
with operator cab (Ls) (Sk) (Sp) (Ls)
Applicable clauses of
crane safety code — Clauses 21 and 22
!
!

－3－
Slinging Suspended load
<0.5 t ≥0.5 t <1 t ≥1 t
Slinging (Ls) (Sk) (Sl) (Jb) (Sp)
General personnel (Sl) (Jb) (Sp) (Sl) (Jb)
Applicable clauses of crane safety code — Clauses 221 and 222
(Ls) .... Personnel who have license to operate cranes
(Sp) .... Personnel who receive special education and training on cranes and slinging from the company
undertaker
(Jb) .... Personnel who receive training in accordance with the Vocational Training Act
(Sk) .... Personnel who complete the course of operating skill for floor-operated cranes
(Sl) .... Personnel who complete the course of slinging skill
3. Maintenance Obligation by Regulations
To use a hoist, the user is obliged to carry out periodical self-elected inspections and to retain
the inspection records.
●Daily inspection. Monthly and annual self-elected inspections
●Retention of monthly and annual self-elected inspection records for three years

－4－
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. However, the
customer should refer to the laws, regulations and codes applied in the country where the
hoist crane is used. The extract of ISO 4301-1 is as follows.
Table1-Class of utilization of cranes
Class of
utilization Maximum number of o
p
eratin
g
c
y
cles Remarks
U01.6×10
4
Ｉrregular use
U13.2×10
4
U26.3×10
4
U31.25×10
5
U42.5×10
5
Re
g
ular li
g
ht use
U55×10
5
Re
g
ular intermittent use
U61×10
6
Ｉrre
g
ular intensive use
U72×10
6
Intensive use
U84×10
6
U9Greater than
1.6×104
Table2-Nominal load spectrum factor for cranes,Kp
State of
loadin
g
Nominal load s
p
ectrum factor
K
p
Remarks
Q1-light 0.125
Cranes which hoist the safe
working load very rarely and
normall
y
li
g
ht loads
Q2-Moderate 0.25 Cranes which hoist the safe working load fairly frequently
and normall
y
moderate loads
Q3-Heavy 0.50
Cranes which hoist the safe
working frequently and
normall
y
heav
y
loads
Q4-Very 1.00
Cranes which are regularly
loaded close to the safe
workin
g
loa
d
Table3-Group classification of the crane as awhole
State of
loading
Nominal
load
spectrum
factor
K
p
Class of utilization and maximum number of o
p
eratin
g
c
y
cles
U0U
1U2U3U4U5U6U 7U 8U9
Q1-li
g
ht 0.125 A1 A2 A3 A4 A5 A6 A7 A8
Q2-Moderate 0.25 A1 A2 A3 A4 A5 A6 A7 A8
Q3-Heav
y
0.50 A1 A2 A3 A4 A5 A6 A7 A8
Q4-Ver
y
1.00 A2 A3 A4 A5 A6 A7 A8

－5－
Table4-Class of utilization of mechanisms
Class of
utilization Total duration of use h Remarks
T0200
Ｉrregular use
T1400
T2800
T31600
T43200 Re
g
ular li
g
ht use
T56300 Re
g
ular intermittent use
T612500 Ｉrre
g
ular intensive use
T725000 Intensive useT850000
T9100000
Table5-Nominal load spectrum factor for mechanisms,Km
State of
loadin
g
Nominal load s
p
ectrum factor
K
m
Remarks
L1-light 0.125
Mechanisms subjected very rarely
to the maximum load and normally
to li
g
ht loads
L2-Moderate 0.25 Mechanisms subjected fairly frequently to the maximum load but
normall
y
to rather moderate loads
L3-Heavy 0.50
Mechanisms subjected frequently to
the maximum load and normally to
loads of heav
y
ma
g
nitude
L4-Very 1.00
Mechanisms subjected regularly to
the maximum loa
d
Table6-Group classification of the mechanism as a whole
State of
loading
Nominal
load
spectrum
factor
K
m
Class of utilization of mechanisms
T0T
1T 2T 3T 4T 5T 6T 7T 8T 9
L1-li
g
ht 0.125 M1 M2 M3 M4 M5 M6 M7 M8
L2-Moderat
e 0.25 M1 M2 M3 M4 M5 M6 M7 M8
L3-Heav
y
0.50 M1 M2 M3 M4 M5 M6 M7 M8
L4-Ver
y
1.00 M2 M3 M4 M5 M6 M7 M8

－6－
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
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
another Box-rail is needed, carefully weld the two
Box-rail so that they are properly aligned with each
other. After welding, smoothly finish the welded
joint section, and the wheel and guide roller running
section. If joint plates are needed, attach them to
both the upper and lower surfaces of the Box-rail joint
section. Install a stopper on both ends of I-beam to
prevent overrun of wheels. Do not frequently
contact the hoist to the stoppers to stop the hoist. Be
sure to attach cushioning material, such as rubber to
each stopper.
Be sure to use stoppers larger than half of the diameter
of the wheels. Use identical size stoppers to the
double-rail type also.
Danger
●Make absolutely sure that only a specialized subcontractor or persons with the expert knowledge is allowed to install
the crane.
⋅Or else, electric shock, falling hook block and other accident may occur, causing an injury.
●Install the crane only in an environment of the specified conditions. Avoid rain or water that the crane is not
designed for.
Warning
!
●Be sure to provide both ends of the rails of the cross and longitudinal travel tracks with stoppers.
⋅Or else, an accident such as the hoist falling off may occur, causing an injury.
●Check that the structure where the crane is installed has the required strength.
⋅Or else, an accident such as the hoist falling off may occur, causing an injury.
Ground Wiring and Installing Earth Leakage Circuit Breaker
To avoid electrical shock due to fault current, be sure to install a ground wiring and install
an earth leakage circuit breaker in the electrical line.
Install class C or Class D electrical grounding according to Electrical Equipment Technical
Standard and Internal Wiring Standard.
(For a Class 400 V power line, use Class C electrical grounding and grounding resistance of 10 Ω
or less.)
○For motored traversing hoists
Ground the I-beam or rail as shown above. Do not coat the wheel running surfaces.
!
!
Box- rail
Box -rail

－7－
○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.
Warning
●Be sure to ground the crane. In addition to the grounding, provide the electrical circuit with a ground fault circuit breaker.
●Ground the crane to type C or type D grounding specification.
●Comply with Electrical Standard for Industrial Machinery and Naisen Kitei (Japanese Standard for Electrical
Wiring) for the grounding and installation of the ground fault circuit breaker.
⋅This is to prevent electric shock if a ground fault occurs.
・Electrical Wiring
Observe the technical standards for electric equipment and the regulations for internal wiring.
The hoist can be supplied with power through trolley wire or power supply cable.
1. Trolley type
To prevent accidents, such as an electrical shock, use an insulated trolley. Various insulated
trolleys are commercially available. Select a trolley wire conductor with proper capacity and
specifications.
2. Power supply cable type
When supplying power through cable, use a specified cabtyre cable.
○Do not connect cables. Use a cable having a required length, and connect the cable
directly to the terminal in the control box.
○Retain the cable in such an appropriate manner that the cable tension is not applied directly
to the terminal.
Determine the cable size depending on the cabling distance so that a voltage drop will not occur.
Power supply cabtyre cable allowable length
Hoist capacity
(t)
Motor capacity
kW
(at 60 Hz)
Cabtyre cable allowable length (m) for 3-core cable
Nominal sectional area of conductor (mm2)
1.25 2 3.5 5.5 8 14 22 30
5、10 5.0/6.0 - 21 39 61 (86) (152)
(Note) (1) The table shown above is applicable to 200V class hoists in the case when a voltage drop between the
transformer and hoist is kept at 10%.
(2) The values shown above are determined on consumption that only the hoisting motor is provided. When a
hoist crane is used, the capacity of the crane traveling motor must be added.
(3) If the hoisting motor is not a standard type (the starting current and power factory may differ), see the table.
(4) If the transformer capacity is lower than 3EIs, a voltage drop in the transformer must be taken into
consideration.
(5) When an allowable cable size enclosed in parentheses is adopted, the cable outlet hole must be additionally
machined, and the solderless terminal or the terminal block must be modified.
!

－8－
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. Without a reactor, the inverter may be damaged.
To install a reactor, please contact us.
(2) Measures for noises
There are several types of noises. The noise sent from
the external unit may cause abnormal operation of the
inverter. The noise generated by the inverter may be
sent back to the power supply line. The radiated noise
may cause abnormal operation of the peripheral units.
●Suppression of noise sent from external units
Install a surge killer on each peripheral unit that may
generate large noise.
●Suppression of noise generated by inverter
We recommend use of noise filter SF1259 or SF1260.
(Refer to the catalog of the Mitsubishi optional
general inverter of separate type.)
Characteristics of Noise Filter
Model Applicable
hoist
Outside dimensions (Unit: mm) Approximate weight
(kg) Loss (W)
Leakage current
(Ref. value)
(mA)
W H D W1 H1 C
200 V SF1259 U2-1/2 - 2 142 410 65 105 386 6 2.4 27 33
SF1260 U2-2.8 - 5 222 468 80 190 449 7 5 118 440
<Measures against leakage current>
This hoist uses an inverter to drive the
motor. Since high harmonics is included
in the inverter output voltage, leakage
current to the ground is created due to the
capacitance to the ground of the line from
the inverter to the motor and the floating
capacitance between the motor winding
and the iron core.
The leakage current not only flows through its own line of the inverter but penetrates other lines
through the ground wiring. To avoid malfunction due to the leakage current, use an earth
leakage circuit breaker with rated sensitivity current of 100 mA or greater. In this case, the
earth leakage circuit breaker functions to prevent disasters such as a fire due to leakage current.
2
m
m
dia hole
Dimensional outline drawing
Earth leakage
circuit breaker Inverte
r
Power suppl
y
Moto
r
Leakage current
to the earth
Hoist

－9－
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.
Box rail
width 5t,10t
300 mm *Fig. 1-1
350 mm Fig. 1-2
The clearance between the flange inner side if the wheel is equipped with a flange and the Box-rail
is approximately 5.6 mm . Check the clearance before installation (see the following figure). To
adjust this clearance, change the washer (1.6 mm) positions to the inside or the outside of the
traversing side plate. The Box-rail width includes a tolerance. In addition, when a new hoist is
installed on the existing Box-rail, the Box-rail may be worn out. For these reasons, be sure to
adjust the clearance using the actual hoist installed on the Box-rail. Check the clearance for the
entire rail. If the traversing rail is curved, widen the clearance at the curved area (as shown in
the following figure).
Fit the same number of spacers and washers on both sides of the frame. Consider the balance
when fitting the spacers and washers.
The hoist could be installed most easily from one end of the Box-rail. However, in most cases,
the Box-rail ends are not open. So pull out the split pin (see Fig. 1) and loosen the nut to open
the traversing side plates to the respective sides. The side plates are tightened with slotted nuts.
When aligning the pin hole with the slot of the slotted nut, be sure to tighten the nut (do not loosen
the nut).
Traversing side plate
Spacer
(6 mm thick)
Washer
(1.6 mm thick)
Frame
Slotted nut Clamping bolt
Split pin
Fig.1-2
Applicable Box-rail:
Maximum width
Fig.1-1
Applicable Box-rail:
Minimum width
Remarks: The asterisked
figures indicate the states
before shipment.

－10－
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.
Wheel Box Rail
With flange

－11－
・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.
Pushbutton pendant
Adjust
Clip
* Lifting-lowering gearbox
side for 1/2t type
Clip
Cable
Adjusting the pushbutton pendant height
Banding band
Clip

－12－
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. In this case, do not exchange the wires of the pushbutton switches.
If the hook is lifted by pressing the DOWN
switch, the hook will move to the second
stage limit switch. After this operation, the
hoist will not move even if the UP or
DOWN button is pressed. In this case,
follow the procedure below to restore
operation:
(1) Remove the connection rod linking the
lever and the limit switch.
(2) Turn the clockwise the shaft beside the
control box to restore the limit switch.
Keep the arm on the shaft.
(3) Press the DOWN button to lower the hook
gradually by inching. Before lowering
the hook, be sure to exchange the
connected terminals of the R-phase and
T-phase wires with each other.
(4) Re-assemble in the order reverse to the dis-
assembling order.
“EAST” and “WEST” shown on the
pushbuttons respectively indicate the
traveling directions when the hoist is
viewed from the control box (see the
figure shown on the right side).
Last of all, run the hoist over the whole
length with no load, and make sure that
there are no abnormalities.
Warning
●When correcting the phase sequence, do not change the electrical connection of the pushbuttons on the operation box.
⋅Or else, the limit switch is disabled. This causes the wire rope to break and the suspended load to fall off, possibly
causing an injury.
West (Left)
East (Right)
Connection rod
Arm
Lever
Control box Traversing
(In the case of a double rail type, the control
box is located in the east, and the opposite
side is in the west.)
!

－13－
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.
(B) Overload test run
Hang a load of 125% of the rated load, and lift and lower the load several times.
The hoist has been certified by carrying out overload test runs with a load of 125% before
shipment.
However, the user is recommended to carry out the overload test runs from the viewpoint of
safety because the installation of I-beam and other devices can be checked by this test. The
test is designed to check the mechanical strength of each part. The performance test shall be
carried out with the rated load.
(C) Adjusting the traversing brake
If the brake is too effective when traversing is stopped, load collapse may occur. On the
contrary, if the brake is not effective, the hoist may coast and cause an accident. Open the
steel plate cover of the traversing motor, and turn the bolt in the cover for adjusting the
traversing brake to an optimum force at which load collapse will not occur. The brake
adjustment range is 0% to 100% of the motor torque. Before delivery from our factory, the
brake is adjusted to 50%. (For a detailed description of the adjustment method, refer to the
“Traversing Electromagnetic Brake”.)

－14－
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. Press each switch to the first
step to perform lifting/lowering operation at a low speed. Press each switch to the second
step to perform rated speed operation (inverter output = approx. 60 Hz). If the No-load
high-speed function is set, the ultra high speed will be automatically selected. (Before
delivery from our factory, the No-load high-speed function is canceled. So set this function
whenever necessary.)
To set the high speed or low speed, use the operation function setting area (equipped for the
standard type). The mode button is in this area. Using this button, enter the frequency
setting mode, and change the frequency to set the desired speed.
Speed change between high speed and low speed (lifting/lowering operation)
Pressing
Pushbutton
No-load
high-speed
function 1st step 2nd step
Lifting/
lowering UP/DOWN
With
function Low speed Rated high speed In No-load mode only
Ultra high speed
Without
function Low speed High speed
Operation with a sequencer
When the sequencer output circuit gives SSR output, the hoist may become unstable or enter the
ON state due to leakage current from the snubber circuit.
Countermeasure: Externally fit a resistance, R, to bypass the leakage current.
Sequencer output circui
t
Hoist input circui
t
Snubber circui
t
Bypassing leakage
current from the
snubber circuit
R = Approx. 30 kΩ, 3 W

－15－
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” and the status data “hook at lower limit position”
will be output from the OUT1 and OUT2 terminals, respectively.
CPU board for
lifting operation
OUT1 : Outputs the status data “hook at upper limit
position”. (This data can be also used as an error
data.)
OUT2 : Outputs the status data “hook at lower limit
position”. (This data can be also used as an error
data.)
Upper limit
stop point OUT1 : Opened OUT2 : Closed
Lower limit
stop point OUT1 : Closed OUT2 : Closed
Set lift
OUT1 : Closed
OUT2 : Opened
At abnormal
stoppage OUT1 : Closed OUT2 : Opened
Contact capacity:
200 VAC, 0.5 A
Terminal box (20P)
OUT3 and OUT4 terminals:
The overload signal will be output even if the overload stoppage function is disabled.
To use two hoists for lifting a load, set the same lifting/lowering operation conditions for both
hoists.
Between OUT3 and CM34 Between OUT4 and CM34
External output signal During normal operation : Open When operation is stopped : Open
When overload is detected : Closed During operation : Closed

－16－
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. Note
that the segment indicator mode will be sequentially switched to the extended setting mode,
history display mode, and basic setting mode. Each mode has various setting items or display
items. So switch the segment indicator to the desired mode to change the set operation functions
or to display the stored history data.