TOYODenki EDM series Manuale utente

INSTRUCTION MANUAL

Permanent magnet type synchronous motor

Series

CONTENTS

Please read surely the following precautions

I. Preparation for operation -------------------------------------------------------------------------------1

1. Checking at arrival of motor -------------------------------------------------------------------------------1

2. Installation -------------------------------------------------------------------------------------------------------1

3. Electric wiring -------------------------------------------------------------------------------------------5

II. Trial operation and ordinary operation -------------------------------------------------------------------7

1. Before powering -------------------------------------------------------------------------------------------7

2. After powering -------------------------------------------------------------------------------------------7

III. Maintenance, checking -------------------------------------------------------------------------------8

1. Daily checking -------------------------------------------------------------------------------------------8

2. Periodical checking -------------------------------------------------------------------------------------------8

3. Bearing and lubrication -------------------------------------------------------------------------------8

4. Checking of accessories ------------------------------------------------------------------------------10

5. Service life of main accessory parts ------------------------------------------------------------------10

IV. Preparation for operation ------------------------------------------------------------------------------11

1. Storage ------------------------------------------------------------------------------------------------------11

V. Disassembly, Assembly ------------------------------------------------------------------------------12

1. Procedures of disassembly and assembly ------------------------------------------------------12

2. Replacement of bearing ------------------------------------------------------------------------------16

3. Structural drawing of motor ------------------------------------------------------------------------------17

VI. Troubleshooting of motor ------------------------------------------------------------------------------19

VII. Industrial Product Warranty ------------------------------------------------------------------21

Please read surely the following precautions

Introduction

We thank you for your adoption of Toyo Denki ED Motor (permanent magnet type synchronous

motor). This Manual shows handling method of ED motor and precautions on use for customers

having general knowledge on permanent magnet type synchronous motor. Before use, please

read this Manual carefully until getting of enough knowledge on our ED motor and use it when

it is in optimum condition. After reading, please keep this Manual close to the place where ED

motor is used. In case of lease or transfer of ED motor, deliver this Manual together. When ED

motor is used combining with machine or equipment, please arrange this Manual to be handed

to the end user surely. If this Manual is lost or damaged, please order new one from us or our

distributor. Meanwhile there is a possibility that we change parts of ED motor for the purpose

of improvement of quality/performance or for safety. At such time, there may be a case that a

part of content and illustration, etc. of this Manual does not conform to the original parts, for

which please understand. If there are any points which are unclear, please consult us or our

distributor.

Safety precautions

Before works of installation, operation, maintenance, inspection, etc., please read carefully this

Manual and the manual of Inverter equipment (VF66B, etc.) and all of other attached documents

surely for correct use. Please use ED motor after getting enough knowledge on it as well as

information on safety and all precautions. After reading, keep this Manual close to the place

where operator can read it easily at anytime. In this Manual, ranking of safety precautions is

classified to [Danger] and [Caution].

! Danger : In case of error in operation, dangerous situation may occur and it could result

in death or serious injury.

! Caution : In case of error in operation, dangerous situation may occur and it could result

in medium or light injury, or damage to physical property only.

Even in case of above ! Caution , there is a possibility to lead to serious result depending on

the situation.

Since important contents are written in both safety precautions, make sure to observe them.

! Danger

(General)

・Works of transportation, installation, piping, wiring, operation, maintenance, inspection

must be carried out by qualified expert. Otherwise, that could result in electric shock, injury,

fire, etc.

・Avoid the work in state of hot-line. Be sure to work after breaking of power supply.

Otherwise, that could result in electric shock.

・Even in state that power supply is interrupted, voltage is generated at motor terminal while

motor is running. Do not touch the motor until perfect stop of rotor and also avoid the work.

Otherwise, that could result in electric shock and injury.

・In state that the power supply is interrupted, do not apply the motor to the usage which has

a possibility of being rotated faster than motor rating speed by the load. Otherwise, that could

result in burning and fire.

・Never use the motor in explosive atmosphere. Otherwise, that could result in injury, fire, etc.

(Installation)

・Surely ground the terminal for earthing. That could result in electric shock.

・In case of use of motor fitting on the ceiling or on the wall, it may drop depending on the

conditions. Therefore, please obey to catalog and technical materials in regard to the details

of range of use. Otherwise, that could result in injury.

・Operate the motor after confirmation that protection devices are firmly connected and they

activate normally. Otherwise, that could result in injury and fire.

! Danger

・Do not operate the motor in state that the cover of terminal box is removed. After work, fit

the cover of terminal box at the original position. Otherwise, that could result in electric

shock.

(Piping, wiring)

・Connection with power supply cable should be done in accordance with connection diagram

or Instruction Manual. Erroneous wiring could result in electric shock and fire.

・Do not bend or pull or put between something the power supply cable and lead wire of motor

forcibly. Otherwise, that could result in electric shock.

(Operation)

・Never approach to or contact the rotating objects (shaft, etc.) during operation. Otherwise,

that could result in injury by being caught.

・When power is interrupted, turn off the power supply surely. Otherwise, that could result in

injury when power is supplied again.

(Maintenance and inspection)

・Connection with power supply cable should be done in accordance with connection diagram

or Instruction Manual. Erroneous connection could result in electric shock and fire.

! Caution

(General)

・For installation place of motor, secure safe and adequate space for maintenance and

inspection. Otherwise, trouble of electric shock and injury could occur.

・Do not use the motor under out of specifications of that motor. Otherwise, that could result in

electric shock, injury, breakage, etc.

・Do not insert finger or object into the aperture of motor. Otherwise, that could result in

electric shock, injury, fire, etc.

・Do not use damaged motor. Otherwise, that could result in injury, fire, etc.

・In case of work at high place, prepare enough measures for prevention of drop. Otherwise,

trouble of injury by drop could occur.

・Since remodeling by user is out of range of our guarantee, we are not responsible for it.

・Do not put obstacles in front of motor name plate in order for operator to see it at any time.

・Do not remove the name plate.

(Transportation)

・Since drop and falling down of the product during transportation is dangerous, please pay

enough attention for such work. As to motor, surely use designated position for hanging. After

installation of motor combined with machine, do not hang whole set of motor-machine at the

position for hanging of motor only. Before hanging, confirm mass of motor by name plate,

packing case, outline drawing, catalog, etc. and do not hang the heavier motor than the rated

load of hanger. Breakage of hanger and consequent drop as well as falling down could result

in breakage of motor and injury.

(Unpacking)

・Unpack the case after confirmation of top and bottom. Otherwise, that could result in injury.

・Confirm whether reached product is just the ordered one. Installation of erroneously

delivered product could result in injury, breakage, etc.

(Installation, adjustment)

・Never place any inflammable objects around the motor. Otherwise, that could result in fire.

・Do not place any objects which prevent ventilation, around the motor. Otherwise, that could

result in burn and fire by extraordinary overheat caused by prevention of cooling

・When motor is connected with machine, pay attention on centering, belt-setting, parallel

degree of pulley, etc. In case of series connection, pay attention on direct-connection accuracy.

In case of belt connection, adjust tensile strength of belt correctly. Before operation, tighten

clamp bolts of pulley and coupling firmly. Otherwise, trouble of injury and breakage of

equipment caused by scattering of fragments could occur.

・Avoiding touch with rotating part, mount the cover, etc. Otherwise, that could result in

injury.

! Caution

・In case of rotating of motor alone, remove temporarily fixed key to the main shaft.

Otherwise, that could result in injury.

・Before connection of motor with machine, confirm its direction of rotation. Otherwise, that

could result in injury and breakage of equipment.

・Never get on and dangle from motor. Otherwise, that could result in injury.

・Do not touch with bare hand the keyway at shaft end of motor. Otherwise, that could result

in injury.

(Piping, wiring)

・At the time of measurement of insulation resistance, do not touch the terminals. Otherwise,

that could result in electric shock.

・Carry out wiring work in accordance with [Electrical Facilities Technical Standards] and

[Inner Wiring Regulations]. Otherwise, that could result in fire.

(Operation)

・Since motor gets very hot during operation, do not touch it with hand or body. Otherwise,

that could result in burn.

・When error occurred, stop operation immediately. Otherwise, that could result in electric

shock, injury, fire, etc.

(Maintenance, inspection)

・At the time of measurement of insulation resistance, do not touch the terminal. Otherwise,

that could result in electric shock.

・At the time of injection/discharge of grease to/from bearing, do not touch rotating object.

Otherwise, that could result in injury.

・Since frame of motor gets very hot, pay attention at the time of maintenance and inspection

in order to avoid burn.

(Repair, disassembly)

・Repair and disassembly should be done by qualified expert. Otherwise, electric shock,

injury, fire, etc. could occur.

EDM Series ED motor is the most suitably designed motor for Inverter

drive by Toyo Denki having high level technology in rotary machine and

control equipment.

Explanation of type name

EDM 1 9 1 1 V - C 1 A A - H 0 1

Main mechanical variation on

external form

Details of protection system or

cooling system

Electrical specifications

Cooling system

Installation structure of motor

Frame spigot diameter

Series number

Fig. 1

- 1 -

I. Preparation for operation

1. Checking at arrival of motor

When the ordered motor arrived, please check paying attention to the following points.

(1) Check the motor with our invoice separately sent.

(2) Check the motor for damage, rusting, dropping of accessories, etc.

(3) There is a case that the rotor of motor is fixed in order to prevent the bearing from being

damaged during transportation. Check the rotor and remove it.

(4) Rotate the shaft end manually to confirm smooth rotation.

(5) Check the motor output, voltage, current, frequency, rotation speed, etc. shown on the name

plate.

Photo. of external appearance of motor

2. Installation

2.1 Installation place

(1) Install the motor at a well-ventilated place and arrange not to return the coming out heat from

the motor, to the intake side by circulation. At a place where the ambient temperature is high or

when the motor is influenced by heat radiation/conduction, take measures such as heat

insulation, reduction of load, etc.

(2) Distance between the inlet of cooling fan of the motor and the wall should be 20cm or more for

EDM13～EDM31 and 30cm or more for EDM35～EDM68.

(3) Place with less humidity.

(4) Place with less dust. If dust is accumulated on the fins of frame, cooling effect will be reduced

causing overheating. Therefore, periodical cleaning should be done in case of dusty place.

(5) Place where motor is not influenced by noxious gas and acid/alkaline chemicals, etc. When

motor is used at a place where flammable gas exists, re-check whether selected explosion proof

structure conforms to the regulations of Ministry of Economy, Trade and Industry and the

Ministry of Health, Labor and Welfare.

(6) Place where such works as disassembly, inspection, cleaning and maintenance can be carried

out easily.

(7) Install the motor on a strong foundation and rigid common base so that external vibration will

not be conducted to the motor. If vibration during operation is large, bearing life will be

shortened and it will cause the vibration fatigue failure of fan, rotor, etc.

(8) Place with less fluctuation of supply voltage and less voltage drop.

Connector for pulse oscillator

Fram

Main

terminal box

Shaft

Bracket

Fan cover

Auxiliary terminal box

(for cooling fan)

- 2 -

2.2 Connection with counterpart machine

(1) Foundation work

In order to minimize the vibration and misalignment during operation, strong foundation is

required. If foundation is incomplete, machine will vibrate and bearing life will be shortened,

to which please pay attention. The most ideal foundation in order to prevent generation of

vibration is a strong concrete foundation but

if such concrete foundation cannot be made

because of counterpart machine and

relation with the place, install the motor on

the steel frame with bolts firmly arranging

that the motor shaft exactly level (or

perpendicular for a vertical motor) surely.

For the base, achieve the level degree of

0.2/1000mm or less accurately. Also, clean

the surfaces of concrete foundation / steel

frame and of the leg of motor for ideal

installation.

(2) In case of flexible coupling

1) Mark the matchmarks on the outer

surface of coupling.

2) In order to rotate the couplings together,

connect couplings of the counterpart

machine and of the motor by one bolt.

3) Fix a dial gauge firmly to outer surface of one coupling. (Fig. 2)

4) Move the matchmark of the coupling to the top and measure the dimension-g by clearance

gauge and dimension-h by dial gauge.

5) Rotate the coupling and carry out same measurement as above item 4) at every 90 of

quadrant positions.

6) Adjust using shim plates so that the difference between maximum and minimum of the

measured values will be 0.03mm for both g and h. Every time the measurement for

adjustment is carried out, tighten the installation part with bolt sufficiently. When dial

gauge cannot be fitted for a small motor, apply the stretch to the outer surface of one

coupling and measure the clearance between stretch and the other coupling.

Stretch

Fig. 2

h : Parallelism

g : Eccentricity

Matchmark

- 3 -

(3) In case of belt drive

Set the counterpart machine shaft and motor

shaft accurately parallel and apply the belt in

such a way that both pulley centers coincide each

other.

The belt is apt to be stretched too much however,

excessive stretching will damage the bearing and

cause unexpected accidents such as breakage of

motor shaft, etc., to which please pay attention.

1) Belt stretching method

Step 1 : Firstly, find the belt span (Ls). Belt span

is the length of the portion of belt

between contact points with both pulleys.

Step 2 : Apply the force ( Pk ), which is required

for deflection ( δ), at the center of the

belt span. This required force for

deflection ( δ) should be calculated by

the formula 5 shown below and it should

be within the range of Pk1 - Pk2.

Step 3 : Stretch the belt in such a way that the

deflection ( δ), when the force is applied,

will be the value found by the following

formula.

δ= 0.016・Ls

2) Calculation formula

Step 1 : How to find belt contact angle (small pulley side) ... Formula 1

Formula 1

θ = 180° －2 sin-1

Step 2 : How to find initial tension (Fo) .................................. Formula 2

Formula 2

Fo = 0.9 { 500 ( ) + m・v2}

Fo : Initial tension (N)

Table 1

Kθ: Contact angle

correction factor

Contact angle (θ)

140°

150°

160°

170°

180°

Pd: Design power (kW)

Correction factor (K

θ)

0.89

0.92

0.95

0.98

Pd= PNx ( Ko + Ki ) PN: Load power (motor output, in general) (1kW)

Ko : Load correction factor (1.0 ～1.5)

Ki : Idler correction factor (0 ～0.2)

Z : Number of belt v : Belt speed (m/sec) m : Mass/unit of belt (kg/m)

Note) Determine Ko, Ki depending on the machine to be used and operation time,

referring JIS Standard or catalog, etc. of belt maker.

Step 3 : How to find span (Ls) ................................. Formula 3

Formula 3

Ls : Span (mm)

C : Distance between shafts (mm)

d2: Large pulley nominal diameter

(mm)

d1: Small pulley nominal diameter

(mm)

Z・v

d2－d1

Motor

Counterpart

machine

Motor side

pulley

θ(Belt cont-

act angle)

Fig. 3 Belt stretching method

2.5 –Kθ

Kθ

Ls = C2－

(d2－d1)2

- 4 -

Step 4 : How to find deflection (δ) ........................... Formula 4

Formula 4 δ= 0.016・Ls δ: Deflection (mm)

Step 5 : How to find necessary force (Pk1, Pk2) for deflection (δ) ... Formula 5

Formula 5

Pk1 : Necessary force (min. value)

(N) for deflection (δ)

Pk2 : Necessary force (max. value)

(N) for deflection (δ)

Table 2

Kind of belt

Y(N)

m(kg/m)

Standard V belt

A type

0.12

B type

0.20

C type

0.36

D type

0.66

Narrow V belt

3Vtype

0.08

5Vtype

0.20

8Vtype

0.50

Table 3

Type of motor

EDM

1711

EDM

1721

EDM

Permissible shaft load F(N)

1600

2240

2930

5360

9080

12100

18800

24200

Q (mm)

110

140

170

175

Q' (mm)

31.5

50.5

93.5

106

91.3

108.8

[Note] Type of motor, for which the belt can be applied, is till EDM4321V. EDM4331V and

EDM54, EDM68 are for direct connection only.

Belt speed should be : -

Standard V belt (A, B, C, D types) ..... 30m/sec or

less

Narrow V belt (3V, 5V, 8V types) ....... 40m/sec or

less

This matter should be taken into consideration when

pulley diameter is determined. The belt tension differs

depending on the kind of belt however, the radial load

imposed on the motor shaft should be less than the values in the above table.

(4) Mounting of coupling and belt pulley

Coupling and belt pulley should be mounted carefully not to damage the motor bearing.

Lightly press-fit them by wooden or plastic hammer. In case of heating, heat them until about

100°C uniformly. In case of press-fitting, remove the rust preventive agent on the shaft end by

petroleum solvent or alkali solvent, and apply molybdenum disulfide.

[Caution]

In case that the pulse oscillator for speed detection is provided on the shaft end of non-

transmission side, be careful not to give impact to it when coupling and belt pulley are

inserted since it may be damaged by such impact. (See Structural Drawings Fig.17～Fig.20)

(5) In case of flange type motor flange engagement surface is accurately machined. If

contaminant, paint, rust, etc. are found there, remove them surely.

Pk1(min.value) =

Fo + Y

Pk2(max.value) =

1.25 x Fo + Y

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