yaskawa J300 Connecting Manual

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Safety lnfor

The following conventions are used to indicate precautions in this manual. Failure to heed the precau­tions provided in this manual can result in serious or possibly even fatal injury or damage to the prod­ucts or related equipment and systems.

/A WARNING /

Indicates a potentially hazardous situation which, if not avoided, could result in death or seri-

ous injury to personnel.

-mati In

Symbol

is used in labels attached to the product.

IA CAUTION 1

Indicates a potentially hazardous situation which, if not avoided, may result in minor or mod-

erate injury to personnel and damage to equipment.

Even items described in
case, follow these important items.

A CAUTION

may result in a vital accident in some situations. In either

iii

Visual Aids

The following aids are used to indicate certain types of information for easier reference.

Indicates important information that should be memorized, including precautions such as alarm dis­plays to avoid damaging the devices.

Indicates supplemental information.

Indicates definitions of difficult terms or terms that have not been previously explained in this manual.

0 Yaskawa, 1998
All rights reserved. No part of this publication may be produced, stored in a retrieval system, or transmitted, in any form, or

by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of Yas­kawa. No patent liability is assumed with respect to the use of information contained herein. Moreover, because Yaskawa is
constantly strivin,o to improve its high-quality products, the information contained in this manual is subject to change with­out notice. Every precaution has been taken in the preparation of this manual. Nevertheless, Yaskawa assumes no responsi­bility for errors or omissions. Neither is any liability assumed for damages resulting from the use of information contained
in this publication.

CONTENTS

Safety Information

...............................................

VisualAids .....................................................

About this Manual
Related Manuals
Notes for Safe Operation

...............................................

................................................

.........................................

1 GENERALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 CONFIGURATION

1.1.1 System Configuration

1.1.2

1.1.3 ConnectorLayout

ConnectionbetweenDevices.. .......................................

1.2 GENERAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 DESIGNOFBOX

1.3.1 ThermalDesign ....................................................

1.3.2 Dustproof Design

1.3.3 Countermeasures against Magnetic Fields

1.4 CABLE CLAMP AND SHIELDING

1.5 PACKAGING ..............................................

1.5.1 GeneralNotes

1.5.2

1.53 Installation of Servo Unit

Installation of CNC Unit

.........................................

................................................

...................................................

..........................................

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

.............................

............................

......................................................

..............................................

.................. :.

.........................

iii
iv
ix
ix

X

l-l

l-2

l-2
l-3
l-4

1 - 5
l-6

l-6

l-13

1 - 14
l-15

l-15
l-16
l-17

2 CONNECTION OF POWER SUPPLY . . . . . . . . . . . . . . . . . .

2.1 CONNECTION BETWEEN DEVICES

2.1.1 Power Supply to CNC Unit

2.1.2 Power Supply to Converter Unit

2.2 DETAILED CONNECTION

2.2.1 PowerSupplytoCNCUnit

2.2.2 Power Supply to Converter Unit

........................................... 2-2

....................................... 2-2

...................

........................................... 2-3

.......................................

.........................

:

..............

3 CONNECTION OF CNC OPERATION PANEL . . . . . . . . . .

3.1 CONNECTION BETWEEN DEVICES

3.1.1 Connection with g-inch CRT Operation Panel ...........................

3.2 DETAILED CONNECTION OF CNC OPERATION PANEL

3.2.1

3.2.2 General Notes on the Connenction of CRT Operation Panel

Connection with g-inch CRT Operation Panel .......................

.........................

....... 3 - 3

:.

..............

..

2 - 1

2 - 2

2-3

2 . 3

3 - 1

3 - 2

3 - 2

3-3
3-4

4 CONNECTION OF MANUAL PULSE GENERATOR . . . . . . 4 - 1

4.1 CONNECTION BETWEEN DEVICES

4.1.1 Connection with g-inch CRT Operation Panel

......................... 4 - 2

........................... 4 - 2

4.2 DETAILED CONNECTION OF MANUAL PULSE GENERATOR . .

4.2.1 Non-parallelI/F..................................................... 4-3

4.2.2

ParallelI/F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 CONNECTION OF POWER ON/OFF

EXCLUSIVE SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 CONNECTION BETWEEN DEVICES . . . . . . . . . . . . . . . . . . . . . . . . .

5.1.1

5.2 DETAILED CONNECTION OF POWER ON/OFF

5.2.1 Connection to CNC Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 DETAILS OF SIGNAL ......................................

5.3.1

5.3.2 Emergency Stop (‘ESP) Input ........................................

5.3.3

Connection to CNC Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

EXCLUSIVE SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servo Power ON (SVMX), Brake Release (BKX) Output

External Power ON/OFF (EON, EOF, ECOM) Input

.................. 5 - 4

...................... 5-5

4 - 3

4-4

5-l

5 - 2

5 - 3

5-3

5 - 4

5 - 5

6 CONNECTION OF FEED SERVO UNIT . . . . . . . . . . . . . . . .

6.1 CONNECTION BETWEEN DEVICES

6.1.1 Connection with l-axis Servo Unit ....................................

6.1.2 Connection with 3-axis Servo Unit ....................................

6.2 DETAILED CONNECTION WITH FEED SERVO UNIT . . . . . . . . . .

6.2.1 No.1 Axis .................

6.2.2 No.2 Axis .................

6.2.3

6.2.4 No.4 Axis .................

6.2.5

6.2.6

No.3 Axis .................

No.5 Axis .................

IR Type Servo Unit .........

. .

6.3 DETAILED CONNECTION OF SERVO UNIT MAIN CIRCUIT . . . .

6.3.1

6.3.2 Connection with 3-axis Servo Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connection with l-axis Servo Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 USEOFSERVOUNIT.. ....................................

6.4.1

6.4.2 Protection of Power Line .............................................

Noise Suppression ..................................................

vi

......................... 6 - 2

. . . .

. . . .

. . . .

. . . .

. . . .

. . . .

. . . .

. . . .

. . . .

. . . . . . . . . .

6 - 1

6-2
6 . 4

6-6

6-6
6-6
6-7
6-7
6-8
6-8

6 - 10

6-10

6- 11

6-12

6-12
6-16

7 CONNECTION OF SPINDLE DRIVE UNIT

.............

7-l

7.1 CONNECTION BETWEEN DEVICES .........................

7.1.1 Pulse Generator with Built-in Motor

7.1.2

7.1.3 Main Circuit, Converter, and

Separate Spindle Pulse Generator

lnverter

...................................

....................................

...................................

7.2 DETAILED CONNECTION WITH SPINDLE DRIVE UNIT .......

7.2.1

7.2.2 Separate Spindle Pulse Generator

7.2.3 Main Circuit, Converter, and

8 CONNECTION OF TAPE READER

Pulse Generator with Built-in Motor

lnverter

...................................

....................................

..........................

....................

8.1 CONNECTION BETWEEN DEVICES .........................

8.1.1 Connection with CNC Unit

...........................................

8.2 DETAILED CONNECTION OF TAPE READER ................

8.2.1

MODEL2801E

9 CONNECTION OF RS-232C

.....................................................

.........................

9.1 CONNECTION BETWEEN DEVICES .........................

9.1.1 Connection with CNC Operation Panel

.................................

.........

7-2

7-2
7-2
7-3

7-4

7-4
7-5
7-6

8-1

8-2

8-2

8-3

8-3

9-l

9-2

9-2

9.2 DETAILED CONNECTION OF RS-232C ......................

9.2.1 Connection with CNC Operation Panel

9.3 RS-232C INTERFACE

9.3.1

9.3.2

9.3.3

9.3.4 Cable Length

9.3.5 Connection between Devices

9.3.6

TransmissionMethod
CodestobeUsed
Communication Baud Rate

.......................................................

Signal Communication Timing

.....................................

................................................

...................................................

...........................................

.........................................

........................................

10 CONNECTION OF DIRECT-IN

10.1 CONNECTION BETWEEN DEVICES

10.1.1 Connection to CNC Unit

10.2 DETAILED CONNECTION OF DIRECT-IN

10.2.1 Connection to CNC Unit

.............................................

.............................................

vii

.................................

.......................

.........................

....................

9-3

9-3

9-4

9-4
9-4
9-5
9-5
9-5
9-7

10 - 1

.

10 2

10-2

.

10 3

10-3

10.3 DESCRIPTION OF SIGNAL

10.3.1 Input Circuit on CNC Side

............................................

.................................

10 - 4

10-4

11 CONNECTION OF I/O MODULE . . . . . . . . . . . . . . . . . . . . . . 11 - 1

11.1 CONNECTION BETWEEN DEVICES.. . . . . . . . . . . . . . . . . . . . . . . .

11 .l .l Connection between Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.2 DETAILED CONNECTION OF I/O MODULE . . . . . . . . . . . . . . . . . .

11.2.1 Connection between Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 -3

11 - 2

11 -2

11 - 3

11.3 CONNECTION BETWEEN DEVICES OF
ADDITIONAL I/O MODULE

11.3.1 Connection between Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11.4 DETAILED CONNECTION OF ADDITIONAL I/O MODULE . . . . . .

11.4.1 Connection between Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 -5

11 - 4

11 -4

11 - 5

12 CONNECTION OF GENERAL-PURPOSE l/O . . . . . . . . . . 12 - 1

12.1 CONNECTION BETWEEN DEVICES

12.1 .l Connection of Signal Line with I/O Module

.........................

.............................. 12-2

12.2 DETAILED CONNECTION OF GENERAL-PURPOSE I/O

12.2.1 FC81O/FC860 Module

12.2.2 FC861 Module

12.2.3 JSP02 Module

......................................................

...............................................

.....................................................

.......

12 - 2

12 - 4

12-4
12 - 20
12 - 29

12.3 DESCRIPTION OF GENERAL-PURPOSE I/O SIGNAL

12.3.1 I/OPort ............................................................

12.3.2 I/O Circuit of I/O Port

12.3.3 Power Supply for I/O Signal

................................................

..........................................

.........

12 - 38

12-38
12 - 42
12 - 50

About this Manua

This manual describes the specifications for connecting YASNAC J300 with machines, machine inter­faces and external equipment.

Necessary connections to be provided by the machine tool builder differ depending on the type of the
CNC cabinet supplied by Yaskawa. Make additions or deletions of connections in accordance with
the combination for standard cabinets and integrated units.

The programmable controller system (hereafter called PLC) is installed in the YASNAC J300 CNC
cabinet. For details of the PLC, refer to YASNAC J300/3100 PLC Progamming Manual (SlE­C844-0.1).

.I

Related Manuals

Refer to the following manuals as required.
Read this manual carefully to ensure the proper use of J300. Also, keep this manual in a safe place

so that it can be refereed to whenever necessary.

Manual Name

YASNAC J3OOM/J IOOM
Operating Manual

YASNAC J3OOM/J IOOM
Programming Manual

YASNAC J3OOL
Operating Manual

YASNAC J3OOL
Programming Manual

YASNAC J3OO/J 100
PLC Programming Manual

YASNAC J300M/J 1 OOM
110 Signai Function Manual

YASNAC J3OOL

l/O Signal Function Manual

Manual Number

TOE-C844-2. I

TOE-C844-2.2

TOE-C843-13.20

TOE-C843-13.21

SIE-C844-0.1 Describes the PLC instructions and the op-

SIE-C844-2.3

SIE-C843-13.4

Describes the basic configuration and opera­tion procedure of YASNAC J3OOM/JlOOM.

Describes the information necessary for
creating a program using the YASNAC
J3OOM/JlOOM.

Describes the basic configuration and opera­tion procedure of YASNAC J3OOL.

Describes the information necessary for
creating a program using the YASNAC
J3OOL

eration for developing the PLC programs.
Describes the functions of UO signals be-

tween YASNAC J3OOM/J 1 OOM and PLC.
Describes the functions of l/O signals be-

tween YASNAC J3OOL and PLC.

Contents

YASNAC J300
Connecting Manual(Type B)

SIE-C843-13.5

ix

Describes the specifications for connectin-

gYASNAC

interface and external equipment.

5300 with machiones, machine

Notes for Safe Operation

Read this programming manual thoroughly before installation, operation , maintenance or inspection
of the YASNAC 5300.

The functions and performance as an NC machine tool are not determined only by an CNC unit itself.
Before the operation, read thoroughly the machine tool builder’s documents relating to the machine
tool concerned.

In this manual, the Notes for Safe Operation are classified as “WARNING” or “CAUTION”.

W Key to Warning Labels

The following warning labels are used with the YASNAC 5300.

Location of label

CNC unit

-

cl-

Warning label

VI ’ ml

Location of label

1

AWARNING 1

Grounding wires must be connected to the unit’s

goundin,o tet-tea

CNC

unit

-

+ Warning label

II-

Electric shock hazard
Do not touch inside.

Location of label

CNC operation panel with 9 inch CRT

I

,

Rear face

xi

I

I

Warning label

H Transport Precautions

A CAUTION

l

Do not lift the cable when moving the product.

Failure to observe this caution may lead to personal injury or product failure.

l

Cover the eyebolt mounting holes with bolts of the corresponding size after having removed the
eyebolts with the product installed on the machine.

Failure to observe this caution may lead to product failure.

l

Do not move the product in a place subject to rain, water drops, harmful gases or liquids.

Failure to observe this caution may result in personnel accident or product failure.

W Storage

A CAUTION

l

Do not store the product in a place subject to rain, water drops, harmful gases or liquids.

Failure to observe this caution may result in product

l

Select a storage area indoors that is clean and meets the following temperature and humidity
conditions.

Failure to observe this caution may result in product failure.

-20

l

Ambient temperature :

l

Relative humidity :

l

Altitude

“C to 60 “C (-4
10% to 90%
1000 m and less

failure.

“F to 140 “F)

n

Installation

I I

A CAUTION

l

When installing the product, avoid shutting the intake port or the exhaust port. Also avoid foreign

matter from entering the device.

Failure to observe this caution may lead to fire or product failure.

l

Avoid strong impact during installation.

Failure to observe this caution may result in product failure.

l

Set the power line capacity higher than the power consumption of the device.

Failure to observe this caution may result in product malfunction.

xii

A CAUTION

l

The current capacity of 24 VDC external power unit for input/output contacts is determined by the

numberof contact points to be used. When the current capacity is low, install an additional external

power unit.

l

Rust preventive has been applied to the shaft end and the flange surface of the motor, so remove it

by wiping with a clean cloth before installing the device.

l

When connecting the motor shaft to a driven machine, make sure that they are centered accurate-

ly to prevent vibration.

Failure to observe this caution may lead to vibration causing product failure or personal injury

l

Design and install the box in accordance with the following.

Failure in box such as electric control panel may result in product failure or malfunction.

I. Use an ainight enclosure.

2. Limit the average temperature increase of internal air within the enclosure to under 10 “C (50 “F)
compared to the ambient temperature.

3. Use a fan to circulate air in order to improve the cooling efficiency of a closed enclosure and to prevent
abnormal temperature rise.

4. Seal the cable inlet, door. etc. completely.

5. CRT display attracts airborne particles
therefore, provide a structure to prevent the entry of such particles.

6. In the CNC unit, various

units

malfunction, therefore, make structures to prevent the entry of dust.

7. Install packing on the cable inlet,

8. Ambient magnetic field may cause screen fluctuations of the CRT display, therefore,
prevent this by layout and magnetism shield.

because

of its high voltage and may result in malfunction,

and printed circuit boards, dust in the air may result in

doors,

back covers, etc. to eliminate gaps or openings.

A CAUTION

l

Install various units in accordance with the following.

Failure 10 observe this caution may result in product failure or malfunction.

I. Mount the servo unit vertically with screws or bolts.

2. The servo unit will generate heat, therefore, install it with adequate clearance around it.

3 In order to reduce the internal loss causing heat generation, arrange the cooling tin of the servo unit

outside the enclosure so that the fin

is exposed lo the external

4. When circulating air inside the enclosure, do not blow air directly onto the servo unit (in order lo pre

vent dust contamination).

5. Regenerating resistor will generate heat. therefore, install it away from devices that may

heat.

6. Arrange units so that maintenance. inspection or change of parts may be made easily.

XIII

atmosphere.

be affected by

n

Wiring

A CAUTION

l

Correct and precise wiring should be performed by qualified, authorized personnel only.
Failure to observe this caution may result in electric shock, fire, or malfunction.

l

Never connect a 3-phase power supply to motor output terminals “U, V, and W” of the drive unit.

Otherwise, the device may be damaged.

l

Select the type of wire and its size according to your requirement and current capacity.

When the ambient temperature exceeds 30 “C (86 “F), the allowable current goes down.

Select the cable size in conformance with local electrical codes orthe cable manufacturer’s techni-

cal data.
Failure to observe this caution may result in fire.

l

Use twisted wire or multi-core twisted pair shielded wire for general signal wires and feedback

signal wires for the encoder.
This helps

the prevention of malfunction.

A CAUTION

l

Connect wires in the shortest possible length.

This helps the prevention of malfunction.

l

Connect the power supply +24 VDC to the CNC unit.

I. The power supply should be provided at the customer side.

(The power supply unit (JZNC-JAUO7) is available as option.)

2. Suuply the power in the range of +24 VDC 2 10% to the power terminals of the CNC unit.

l

Do not run the I/O signal wires with power wires or in the same duct with power wires.

Sufficient separation of signal wires from power wires will reduce the noise influence

l

In the event of noise from a power wire, use a noise suppressor to prevent it.

As for the specifications and capacity of noise filter, refer to this connection manual.

Correct

use

of noise filter will reduce the noise influence.

l

Be sure to complete the end terminal processing to the last module of the remote I/O module.

Set the “TERMINATION” shorting pin to “ON.”

slight.

Failure to observe this caution may lead to malfunction.

A CAUTION

0 Connect the grounding line of each unit to the housing or grounding plate independently.

Example of grounding

Grounding at one point

z

(100 R or less)

l

Select the wire for grounding in conformance with local electrical codes.

0 Be sure to connect the grounding terminal of the motor to the grounding terminal of the drive unit.

l

Ground at one point. (Ground resistance 100 R or less)

Failure to observe this caution may lead to electric shock. tire, or malfunction.

l

Be sure to separate the grounding line of the unit from a power unit.
Failure to observe this caution may

lead to malfunction.

xv

n

Application Safety Precautions

A WARNING

l

During operation, be sure to observe the following.

Failure to observe this warning may lead to electric shock or device malfunction.

1. Do not touch the unit or terminal while the unit is turned ON.

2. JustaftertheunitistumedOFF,itisstillinchargingstatus. Donottouchtherunningpattsfor5minutes
after the unit is turned OFF.

l

Do not damage, pinch, or give excessive stress to cables.
Excessive load on cable may

l

While the unit is turned ON, never touch its rotating parts.

cause electric shock.

Failure to observe this warning may lead to personal injury.

l

Never modify the product.

Failure to observe this warning may result in electric shock, fire, or product failure.

A CAUTION

l

Use the product under the following conditions.

Use in an environment with high temperature, high humidity, dust, corrosive gases, vibration, or impact
may cause fire, electric shock, or malfunction.

1. Free from explosive gases or steam

2. Free from oil, organic solvent, corrosive liquids, etc.

3. Relative humidity 20 to 90% RH

4. Ambient temperature 0 “C to 45 “C (32 “F to 113 “F) and without freezing
(Free from direct sunlight, heat generating devices, and outside atmosphere)

5. Vibration under 4.9m/s2 (0.5G)

and

non-condensation

l

Do not let foreign matter such as electric wire scrap enter the unit.

Failure to observe this caution may result in fire, product failure or malfunction.

l

For the programming functions, follow the procedures in the user’s manual.

Failure to observe this caution may lead to personnel accident or malfunction.

l

Use the unit with “System Number Switch” of CNC unit set to “0.”

Failure to observe this caution may lead to malfunction.

xvi

A CAUTION

l

Before turning the unit ON again, wait for 2 seconds or more after turning it OFF.

Failure to observe this caution may lead to malfunction.

l

Never disassemble or modify the components of the unit.
Failure

to observe this caution may result in tire, product failure or malfunction.

l

Never change the set values of the components and variable resistors used in the control panel.

Failure to observe this caution may result in tire, product failure or malfunction.

xvii

GENERALS

Chapter 1 describes the requirments for designing the con­troller..

CONFIGURATION

1 .l

1.1.1 System Configuration .....................

1.1.2

1.1.3

Connection between Devices

Connector Layout ........................

1.2 GENERAL SPECIFICATIONS
DESIGNOFBOX

1.3

1.3.1 Thermal Design

1.3.2 Dustproof Design .......................

1.3.3 Countermeasures against Magnetic Fields . 1 - 13

1.4 CABLE CLAMP AND SHIELDING
PACKAGING

1.5

1.51

1.5.2 Installation of CNC Unit

1.5.3 Installation of Servo Unit .................

General Notes

...................

..............

.........

...................

..........................

....

......................

..........................

..................

1 - 2

1 - 2
1 - 3
1 - 4

1 - 5
1-6

1 - 6

1 - 11

1 - 14
1 - 15

1 - 15
1 - 16
1 - 17

l-l

1.1

CONFIGURATION

This section describes the configuration of the controller.

1.1.1

System Configuration

The system configuration of YASNAC is as shown in Fig. 1.1.

-_-_-_-_

r-

YASNAC

r--------‘--------

CNC
unit

1

1

l-

Machine

r-----

0 I
Ia

1

r-

L

I

Fig.1 .l System Configuration

I

---------,

J

--l
I

I

Spindle motor

I

Machine

J

1 side device

l-2

1.1.2 Connection between Devices

+JC&i!
1 f-jBy;@; , 1

-.-.-.-

I I I I I I

RS-232C.VldEd
KEYPONiPOFF

‘CNOZ'

CNAl

CNA3

I Ii I

(Rs-mc

L-&J 1 I I II

. -..-. --rr., -....

C425

-I No2 axis I

Servo unit

. - .~

1 .l CONFIGURATION

M ..,

CNDl

CND2

CND3

CNAP

CNP

Axis conlrol

-1 II

I

-.-.-.-

200 VAC

Fig.l.2 Connection between Devices

I

c4,, _ No.4 axis

CN14

Servo unit

-1 I

c?

40

outputs

8 inputs, 8 outputs
24 inputs, 16 outputs

40 inputs
40 inputs
32 outputs

40 outputs

8 inputs, 8 outputs
24 inputs, 16 outputs

40 inputs
40 inputs

32 outputs

L.-_-

1-3

1.1.3 Connector Layout

BATTERY

Fig.1

UIUL ’

- Axis control mod: ’ u

Motion control module

LL

System control module

Connector Layout(ModekJZNGJRK30)

.3

Sequence control module

l-4

I

1.2 GENERAL SPECIFICATIONS

Design the controller to meet the following conditions completely.

Table 1.1 Specifications

Item Specifications

1.2 GENERAL SPECIFICATIONS

Ambient Conditions

Avoid installation of the control panel in B location subject to direct sunlight. near heat generating devices, or out-

Note:

doors even if the ambient temperature is lower than 45 c.

Temperature

Input Power Source
Input Voltage

Frequency
Momentary Power Loss

0 “C to 45 “C

at operation. (nore)

-20 “C to +6O’C at storage and transportation.
10% to 90% RH (non-condensing)

Free from much dust, coolant or organic solvent.

CPU unit 200/220/230 VAC-15% to +lO%

50160

Hz f 2 Hz

Power loss is detected at power storage over 1 cycle.

l-5

1.3 DESIGN OF BOX

1.3.1 Thermal Design

Design should be made on the condition that the average temperature increase of internal air
of the box to contain the CNC unit and other units should be below 10”Cof the external air.

(1) Enclosure Internal Temperature Increase (Average temperature increase)

The internal temperature increase of enclosure made of sheet metal is generally as
shown below:

where,
AT:I.ntemaI temperature increase (‘C)

P :Heat generation in enclosure (W)
qe : Enclosure heat percolation ratio (WPC)
k : Heat transit ratio of sheet metal (W/m2

: 6W/m* “C : With internal circulating fan

4W/m* “C : Without internal circulating fan

A : Efficient heat diffusion area of enclosure (m*)

Area capable of diffusing heat in surface area of the enclosure
(Excluding area contacting other devices)

-

“C)

(Example) Allowable heat generation in the enclosure with internal circulating fan

8

8

.a*

1200

I;:

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0

800

70

Efficient heat diffusion area is independently located, so bottom area is excluded.
A= 4.16m’

If the heat generation in the enclosure is supposed to be 246 W (113 W in CNC portion,

104 W in servo portion, and 29 W in I/O portion),

AT=F=m

P P

246

= 6 x 4.16 = “’

(C)

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1.3 DESIGN OF BOX

Therefore, it is all right to clear the temperature increase value below 10°C.
Where 10°C is exceeded, it is necessary to arrange separate cooling countermeasures.

(2) Cooling Capacity of Heat Exchanger

Where cooling capacity is insufficient by mounting the circulating fan in the enclosure,
the following heat exchangers are supplied by Yaskawa:

Table 1.2 Heat Exchangers

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Heat Exchanger

REX1 550

HEATEX02

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Cooling Capacity External Dimensions (mm)

1 oow/ 1 O’C

25OW/lO”c

295(W) x890(H) X 50(D)

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440(W) x924(H) X 50(D)

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The heat generation in the cooling capacity column is the allowable heat generation

amount where the internal temperature increase within the enclosure is limited to below

10°C.
(Example) Allowable heat generation amount in the enclosure with heat exchanger
The internal heat generation amount to make the internal temperature increase below

10°C when the enclosure equipped with HEATEXO:! is expressed by the following
equation:

P = k.A.AT + 25OWllO”C

=6x4.16x10+250

= 499WI 10°C

therefore, it is necessary to be below 499W.

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(3) Mounting of Heat Exchanger

Heat exchanger should be mounted on the enclosure manufactured by the machine tool
builder.

Fig. 1.4 shows an example. Mount it so that internal air is taken in from the upper por­tion and discharged from the lower portion, while external air is taken in from the lower

portion and discharged from the upper portion.

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h-

External air

t-+YFw

Fig.l.4 Mounting of Heat Exchanger

3

7

Internal air flow

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Heat exchanger

(Upper

Enclosure

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(4) Heat Generating Capacity of Respective Units

(a) CNC unit

Table 1.3 CNC Unit and Heat Generation

Unit Name

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Heat Generation (W)

1.3 DESIGN OF BOX

\ ! I

\I.‘/

POINT

0

CNC unit (JRK30)

9-inch CRT operation panel
,
( 14-inch CRT operation panel

Tape reader

binch tape reader with handler 55
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8-inch tape reader with handler 125

I/O module

Note: Where current of 10.2 mA is supplied from 96 outputs to all the I12 inputs.

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1

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29

113

16

loo

25

(Note)

The heat generation of the CNC unit varies with addition of options.
The heat generation of the I/O module varies with the I/O status.

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(b) Servo unit

Table 1.4 Servo Unit and Heat Generation

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\’ ’ 5

POINT

Q

Servo Unit

IRlOSE

IR15SE 130 70 63 I 58

IR20SE 150 73 65 I

IRBOSE 200 97 82 71

IR44SE 250 112 92 79

IR050505EB 160 74 I 64
IRlOlOlOEB 180 80 68

IR151515EB 220 90 76

Internal heat generation amount is the heat generation amount remaining inside

1.

Total Heat

Generation (Wj

100 58

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110

100% Load Factor 5% Load Factor 50% Load Factor

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61

Internal Heat Generation(W)

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52

55

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I 5o I

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49

60

the enclosure when the fin of the servo unit is exposed outside the enclosure and
external air over 2.5 m/s is applied to the fin.

2. Thermal design of the enclosure to contain the servo unit varies with specifica­tions for the machines, but it is generally acknowledged to use a value of 70% of
the load factor.

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1.3.2 Dustproof Design

The inside of te CNC units and other boards (especially CRTs) to be packaged in enclosure

designed and manufactured by the machine tool builders are subject to airborne matter(dust,
oil mist, etc.) and may cause malfunction. Therefore, structures should be constructed so as
to prevent such matter from entering into the enclosure.

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Use an airtight enclosure.

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Seal the cable inlet with packing material. (Refer to Fig. 1 S.)

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Secure the rear door lid with packing material. (Refer to Fig. 1.6.)

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The front sides of units on the surface of the enclosure such as CNC operation

panels and tape readers are of dustproof type, however, avoid installing them
at places subject to coolant liquids. And seal the circumference of the mount­ing portion securely.

1.3 DESIGN OF BOX

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Note that the CRT unit will attract airborne dust owing its high voltage. For
the mounting pendant box of the CRT unit, observe the following points:

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Seal the clearance at the cable inlet, door, rear lid, etc. with packing material.
(Refer to Fig. 1.7.)

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The CRT unit mounting surface has already been sealed with packing materi-

al, so use it as it is.

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Close all the openings.

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Oil will collect on the ceiling and enter the inside of the enclosure through
screw holes, therefore, carry out special countermeasures using oil preventive
packing material, etc.

- Metal fitting

Fig.l.5 Cable Inlet

Cable

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Fig.l.6 Door Packing

Pendant box

Fig.l.7 CRT Unit

Pendant box

N CRT unit

1.3.3

Countermeasures against Magnetic Fields

The screen of CRT display may fluctuate owing to ambient magnetic fields.

Keep magnetism generating materials (for example, transformers, reactors, fans, electro­magnetic switches, solenoid relays, exchange power supply cables, etc.) 300 mm from the

CRT display. This value of 300 mm is a general standard and may vary with different situa-

tions, therefore, pay sufficient attention to determining the layout of magnetism generating
sources, and finally check them with the machine.

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1.4

CABLE CLAMP AND SHIELDING

Clamp those cables requiring shielding securely from cables to be connected to YASNAC

to the grounding plate by using “cable clamp metal fitting” as shown in Fig.**m**.
This clamp not only supports cables but also functions as a shield, therefore, it is very impor-

tant, particular for system safety.

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Remove part of the. cable sheath as shown in Fig.**=** to expose the
shield, and clamp the part to the grounding plate using a cable clamp.

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Arrange the grounding plate by the cable lead-in portion.

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When clamping a cable without a shield, there is no need to remove the cable
sheath.

Type 1

DF8401485 DF8404817

& f/j

We

2

\ Cable

Fig.l.8 Cable Clamp and Shielding

8 $ 8.ST

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