YASKAWA J1000 CIMR-JC series User manual

MANUAL NO. TOBP C710606 40A
フィンレスタイプ設置要領書
To properly use the product, read this manual thoroughly and retain
for easy reference, inspection, and maintenance. Ensure the end user
receives this manual.
安川インバータJ1000
形 式 CIMR-JJ
小形シンプル
容量範囲 200 V級（三相電源用）
0.1〜5.5 kW
200 V級（単相電源用）
0.1〜2.2 kW
400 V級（三相電源用）
0.2〜5.5 kW
製品を安全にお使い頂くために，この取扱説明書を必ずお読みください。
また，本書をお手元に保管していただくとともに，最終的に本製品をご使用になる
ユーザー様のお手元に確実に届けられるよう，お取り計らい願います。
Finless Type Installation Manual
YASKAWA AC Drive - J1000
Type CIMR-JJ
Compact V/f Control Drive
Models 200 V Class, Three-Phase Input: 0.1 to 5.5 kW
200 V Class, Single-Phase Input: 0.1 to 2.2 kW
400 V Class, Three-Phase Input: 0.2 to 5.5 kW

2YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
Copyright ©2008 YASKAWA ELECTRIC CORPORATION™
All rights reserved. No part of this publication may be reproduced, 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 the
information contained herein. Moreover, because Yaskawa is constantly striving 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 the
information contained in this publication.

YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 3
Table of
Contents
1 PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 CONDITIONS OF ACCEPTABILITY. . . . . . . . . . . . . . . . . . . . 8
4 PERIODIC MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . .15
5 DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 SELECTING AN EXTERNAL HEATSINK. . . . . . . . . . . . . . .20
7 REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4 YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
1 Preface
1 Preface
◆Applicable Documentation
This manual provides instructions on installing the J1000 Finless drive. For more specific
information on the operation of this product, refer to the other manuals listed in the
following table:
◆Terms
Note: Indicates supplementary information that Yaskawa highly recommends be followed,
even though equipment may not be at risk.
◆Registered Trademarks
• Company names and product names listed in this manual are registered trademarks of
those companies.
Yaskawa AC Drive-J1000 Finless
Installation Manual
Manual No.: TOBPC71060640
This manual contains basic information required to install the
J1000 Finless.
Yaskawa AC Drive-J1000
Technical Manual
To obtain instruction manuals for Yaskawa products access
these sites:
U.S.: http://www.yaskawa.com
Europe: http://www.yaskawa.eu.com
Japan: http://www.e-mechatronics.com
Other areas: contact a Yaskawa representative.
For questions, contact the local Yaskawa sales office or the
nearest Yaskawa representative.
U.S and Europe:
Yaskawa AC Drive-J1000
Quick Start Guide
Other Areas:
Yaskawa AC Drive-J1000
Installation & Start-up Manual
Drive: Yaskawa AC Drive-J1000 Finless Drive
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1 Preface
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 5
General Precautions
• The diagrams in this manual may be indicated without covers or safety shields to show details.
Restore covers or shields before operating the drive and run the drive according to the instructions
described in this manual.
• The products and specifications described in this manual or the content and presentation of the
manual may be modified without notice to improve the product and/or the manual. Such
modifications are indicated by a revised manual number.
• When ordering a new copy of the manual due to damage or loss, contact your Yaskawa
representative or the nearest Yaskawa sales office and provide the manual number shown on the
front cover.
• If nameplate becomes worn or damaged, order a replacement from your Yaskawa representative or
the nearest Yaskawa sales office.
• Yaskawa is not responsible for any modification of the product by the end user. Modification of the
product voids the warranty.

6 YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
2 Product Overview
2 Product Overview
◆About This Product
This manual describes installation conditions and dimensions for the J1000 Finless drive.
Use this product only after you have a full understanding of the manual and its contents.
This J1000 Finless drive is a component recognized by Underwriters Laboratories Inc.(UL).
The installation procedure and instructions have been provided to fulfill the requirements as
specified by the “Conditions of Acceptability”.
◆Model Number and Nameplate Check
Please perform the following tasks after receiving the drive:
• Inspect the drive for damage.
• If the drive appears damaged upon receipt, contact the shipper immediately.
• Verify receipt of the correct model by checking the information on the nameplate.
• If you have received the wrong model or the drive does not function properly, contact
your supplier.

2 Product Overview
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 7
■Nameplate
Figure 1
Figure 1 Nameplate Information
■Drive Model Identification
The J1000 finless drive type is indicated by the letter “J” in the AC drive model designation
code. Refer to the Quick Start Guide for complete model number information.
Figure 2
Figure 2 Understanding the Model Number
PRG : 1010
CIMR-JA2A0004JAA
YASKAWA ELECTRIC CORPORATION MADE IN JAPAN
:
: AC3PH 200-240V 50 / 60Hz 2.7A / 1.4A
: AC3PH 0-240V 0-400Hz 1.2A / 0.8A
: 0.7 kg
:
:
: E131457 IP20
PASS
MODEL
MAX APPLI. MOTOR : 0.75kW / 0.4kW REV : A
INPUT
OUTPUT
MASS
O / N
S / N
FILE NO
7J48
AC drive model
Max applicable motor
Input specifications
Output specifications
Mass
Lot number
Serial number
Software version
CIMR -
J A2A0001 JAA
Drive J1000
Series
Region
Code
Voltage
Class
No. Enclosure
Type
Environmental
Specification
Design
Revision
Order
Customized
Specification Finless
(IP20)
J
Unit
No.

8 YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
3 Conditions of Acceptability
3 Conditions of Acceptability
Adhere to the installation conditions specified in this manual to take full advantage of the
finless design of this drive.
◆Ambient Temperature
The drive ambient temperature shall not exceed 50 ºC (122 ºF) for the drives installed
location.
◆Heatsink Plate Temperature
The aluminum panel on the back of the drive is referred to as the “heatsink plate.” The
heatsink plate temperature should never exceed 90 °C
Table 6 and Table 7 lists the thermal characteristics of the drive.
Use parameter U4-08 to check the temperature of the heatsink plate as described below.
NOTICE: The drive may be damaged if the temperature of the heatsink plate exceeds specified tolerance
level (90 °C). Excessive heat can also shorten the performance life of various drive components.
■Checking and Monitoring Heatsink Plate Temperature
Checking Heatsink Plate Temperature Using the LED Operator
Scroll to parameter U4-08 (heatsink plate temperature).
When the temperature of the heatsink plate is 89 ºC, U4-08 will display:
Checking Heatsink Plate Temperature Using an Analog Output
Example: When using Multi-Function Analog Output Terminal AM, set the parameters
shown in Table 1 .
Table 1 Using Analog Output 1
No. Name Description
H4-01 Analog Output Terminal AM Function Selection 00408
(heatsink plate temperature)
H4-02 Analog Output Terminal AM Gain 100.0%
H4-03 Analog Output Terminal AM Bias 0.0%

3 Conditions of Acceptability
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 9
Figure 3
Figure 3 Output of Heatsink Plate Temperature by Analog Output
Note: 1. Accuracy of the temperature reading may vary ±5 ºC between 50 and 100 ºC.
2. The heatsink temperature is affected by the ambient temperature. Never exceed the allowable maximum
heatsink plate temperature.
◆Installation to Metallic Surface
The mating surface shall have the following properties:
• Surface flatness shall not exceed 0.2 mm across the entire mating surface.
• Surface roughness shall not exceed 25 S.
Note: A surface roughness of 25 S means “Ra” (average roughness) is not greater than 6.3 a and “Ry”
(maximum peak) is not greater than 25 μm.
◆Thermal Compound
Apply a thermal compound between the heatsink plate and the mating surface. The thermal
compound assists in drive heat dissipation.
Yaskawa recommends the thermal compounds in Table 2.
Table 2 Recommended Heatsink Plate Thermal Compounds
When applying the thermal compound, spread it over the surface of the heatsink plate. After
mounting the heatsink plate to the metal back panel, wipe away any excess compound from
around the heatsink plate.
Manufacturer Type Model Recommended spread amount
Shin-Etsu Chemical Inc. Oil-based compound G746 100 μm
Apply the coating evenly across the surface
Dow Corning Toray Inc. Silicone compound
for heat dissipation SC4471CV
50

3 Conditions of Acceptability
10 YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
Figure 4
Figure 4 Application of Thermal Compound
◆Drive Heatsink Plate Installation Screw Size and Tightening
Torque
Screw size and torque specifications for heatsink plate installation screws that hold the drive
to a metal back panel are listed in Table 3.
Table 3 Screw Size and Tightening Torque
NOTICE: Tighten all screws according to specified torques. Failure to do so may inhibit drive cooling and
possible damage the drive.
Voltage Class Model
CIMR-JScrew Size Tightening Torque N • m (ft-lbf)
Single-Phase 200 V class BA0001 ~ BA0010 M4 1.0 to 1.3 (0.74 to 0.96)
Three-phase 200V class 2A0001 ~ 2A0020 M4 1.0 to 1.3 (0.74 to 0.96)
Three-phase 400V class 4A0001 ~ 4A0011 M4 1.0 to 1.3 (0.74 to 0.96)
Metal panel

3 Conditions of Acceptability
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 11
◆Installation Spacing
Figure 5 illustrates correct installation spacing for proper airflow, and wiring. The drive
should be installed so that the heatsink plate rests flat against the metal back panel to ensure
proper cooling.
Table 4 Correct Installation Spacing
Table 5 Correct Installation Spacing
NOTICE: Do not install J1000 Finless drives using the Side-by-Side method available in standard J1000
drive models. Improper drive cooling may result in damage to the drive. Install J1000 Finless drives with a
minimum side-by-side clearance of 30 mm (1.18 in).
Side Clearance Top/Bottom Clearance
Voltage Class Drive Model
CIMR-J
Side Clearance (a)
mm / (in)
Single-Phase 200 V Class BA0001 to BA0010
30 / (1.18)
Three-Phase 200 V Class 2A0001 to 2A0020
Three-Phase 400 V Class 4A0001 to 4A0011
aa
Metal
panel
100 mm
minimum
100 mm
minimum

3 Conditions of Acceptability
12 YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
■Ambient Temperature Derating
Parameters L8-12 (Ambient Temperature Setting) and L8-35 (Installation Method Selection)
must be set according to the installation conditions if the ambient temperature is higher than
35°C. Refer to Figure 5 for drive derating according to ambient temperature.
Parameter L8-12 = 30°C (default). The setting range is -10 to 50°C.
Operating the J1000 Finless drive between -10 and 35 ºC allows 100% continuous current
without derating. Drive operation between 35 and 50 ºC requires drive derating according to
Figure 5.
The drive can be used with 100% rating between -10 and 50°C ambient temperature if the
airflow around the unit is 0.5 m/s or more. In this case set L8-35 = 0 (Installation method =
IP20 standard drive).
Figure 5
Figure 5 Ambient Temperature and Drive Derating
0
Rating
100%
80%
35°C
L8-35 = 3 (default)
Finless/External heatsink
50°C
L8-12
Ambient
Temperature
Setting
L8-35 = 0
surrounding
airflow of 0.5 m/s

3 Conditions of Acceptability
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 13
◆J1000 Finless Drive Watt Loss Thermal Characteristics
■Normal Duty
Table 6 Drive Watt Loss (Normal Duty Rating)
Note: Carrier frequency is set to 2 kHz.
200 V Single-Phase Class
Model
CIMR-JBA 0001 0002 0003 0006 0010 – – – –
Rated Output Current (A) 1.2 1.9 3.3 6.0 9.6 – – – –
Generated Heat
Loss
Heatsink Plate
(W) 5.0 7.6 14.6 30.1 51.7 – – – –
Internal (W) 8.0 9.7 14.4 19.4 29.8 – – – –
Total (W) 13.5 17.3 29.0 49.5 81.5 – – – –
200 V Three-Phase Class
Model
CIMR-J2A 0001 0002 0004 0006 0008 0010 0012 0018 0020
Rated Output Current (A) 1.2 1.9 3.5 6.0 8.0 9.6 12.0 17.5 19.6
Generated Heat
Loss
Heatsink Plate
(W) 5.0 7.6 15.8 27.5 44.6 51.7 61.3 89.8 98.7
Internal (W) 8.0 9.5 13.6 17.2 24.0 25.8 30.4 44.1 46.3
Total (W) 13.0 17.1 29.4 44.7 68.6 77.5 91.7 133.9 145.0
400 V Three-Phase Class
Model
CIMR-J4A 0001 0002 0004 0005 0007 0009 0011 – –
Rated Output Current (A) 1.2 2.1 4.1 5.4 6.9 8.8 11.1 – –
Generated Heat
Loss
Heatsink Plate
(W) 10.0 18.5 30.5 44.5 58.5 63.7 81.7 – –
Internal (W) 9.6 13.9 16.8 21.8 28.5 31.4 46.0 – –
Total (W) 19.6 32.4 47.3 66.3 87.0 95.1 127.7 – –

3 Conditions of Acceptability
14 YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
■Heavy Duty
Table 7 Drive Watt Loss (Heavy Duty Rating)
200 V Single-PhaseClass
Model
CIMR-JBA
<1> Carrier frequency is set to 10 kHZ.
<2> Carrier frequency is set to 8 kHZ.
0001
<1>
0002
<1>
0003
<1>
0006
<1>
0010
<2> ––––
Rated Output Current (A) 0.8 1.6 3.0 5.0 8.0 ––––
Generated Heat
Loss
Heatsink Plate (W) 4.3 7.9 16.1 33.7 54.8 ––––
Internal (W) 7.4 8.9 11.5 16.8 25.9 ––––
Total (W) 11.7 16.8 27.6 50.5 80.7 ––––
200 V Three-Phase Class
Model
CIMR-J2A
0001
<1>
0002
<1>
0004
<1>
0006
<1>
0008
<1>
0010
<2>
0012
<2>
0018
<2>
0020
<2>
Rated Output Current (A) 0.8 1.6 3.0 5.0 6.9 8.0 11.0 14.0 17.5
Generated Heat
Loss
Heatsink Plate (W) 4.3 7.9 16.1 27.4 48.7 54.8 70.7 92.6 110.5
Internal (W) 7.3 8.8 11.5 15.9 22.2 23.8 30.0 38.8 43.3
Total (W) 11.6 16.7 27.6 43.3 70.9 78.6 100.7 131.4 153.8
400 V Three-Phase Class
Model
CIMR-J4A
0001
<2>
0002
<2>
0004
<2>
0005
<2>
0007
<2>
0009
<2>
0011
<2> ––
Rated Output Current (A) 1.2 1.8 3.4 4.8 5.5 7.2 9.2 – –
Generated Heat
Loss
Heatsink Plate (W) 19.2 28.9 42.3 70.7 81.0 84.6 107.2 – –
Internal (W) 11.4 14.9 17.9 26.2 30.7 32.9 41.5 – –
Total (W) 30.6 43.8 60.2 96.9 111.7 117.5 148.7 – –

YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 15
4 Periodic Maintenance
4 Periodic Maintenance
◆Replacement
Estimated drive performance life is based on specific usage conditions. These conditions are
provided for the purpose of maximizing useful drive life and performance. Drive
performance and/or useful life are affected by application in harsh environments or rigorous
use.
■Conditions for Estimating Performance Life
The estimated performance life of the drive is 10 years under the following conditions:
• Drive ambient temperature: Yearly average of 30°C
• Load factor: 80% max.
• Operation time: 12 hours a day
Drive performance life may be less than 10 years if drive use exceeds the conditions above.

16 YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
5 Dimensions
5 Dimensions
Table 8 J1000 Finless Dimensions for Models BA0001~2A0006 (metric)
Table 9 J1000 Finless Dimensions for Models BA0001~2A0006 (U.S. units)
Voltage Class Drive Model
CIMR-J
Dimensions (mm)
W H D D2 W1 H1 H2 t1 Weight
(kg)
Single-Phase
200 V class
BA0001 68 128 71 62.5 56 118 5 3 0.6
BA0002 68 128 71 62.5 56 118 5 3 0.6
BA0003 68 128 81 72.5 56 118 5 3 0.8
Three-Phase
200 V class
2A0001 68 128 71 62.5 56 118 5 3 0.6
2A0002 68 128 71 62.5 56 118 5 3 0.6
2A0004 68 128 71 62.5 56 118 5 3 0.7
2A0006 68 128 71 62.5 56 118 5 3 0.7
Voltage Class Drive Model
CIMR-J
Dimensions (in)
W H D D2 W1 H1 H2 t1 Weight
(lb.)
Single-Phase
200 V class
BA0001 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.32
BA0002 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.32
BA0003 2.68 5.04 3.19 2.85 2.21 4.65 0.20 0.12 1.76
Three-Phase
200 V class
2A0001 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.32
2A0002 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.32
2A0004 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.54
2A0006 2.68 5.04 2.80 2.46 2.21 4.65 0.20 0.12 1.54
2-M4
H1
H
H2
W
W1
t1
D
D2

5 Dimensions
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 17
Table 10 J1000 Finless Dimensions for Models BA0006~4A0009 (metric)
Voltage Class Drive Model
CIMR-J
Dimensions (mm)
W H D D2 W1 H1 H2 t1 Weight
(kg)
Single-Phase
200 V class
BA0006 108 128 79.5 71 96 118 5 4 1.1
BA0010 108 128 91 82.5 96 118 5 4 1.1
Three-Phase
200 V class
2A0008 108 128 71 62.5 96 118 5 4 1.0
2A0010 108 128 71 62.5 96 118 5 4 1.0
2A0012 108 128 79.5 71 96 118 5 4 1.0
Three-Phase
400 V class
4A0001 108 128 71 62.5 96 118 5 4 0.9
4A0002 108 128 71 62.5 96 118 5 4 0.9
4A0004 108 128 79.5 71 96 118 5 4 1.0
4A0005 108 128 96 87.5 96 118 5 4 1.0
4A0007 108 128 96 87.5 96 118 5 4 1.1
4A0009 108 128 96 87.5 96 118 5 4 1.1
W
H
W1
H1
H2
D
D2
t1
4-M4

5 Dimensions
18 YASK AWA EL ECT RI C TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
Table 11 J1000 Finless Dimensions for Models BA0006~4A0009 (U.S. units)
Voltage Class Drive Model
CIMR-J
Dimensions (in)
W H D D2 W1 H1 H2 t1 Weight
(lb.)
Single-Phase
200 V class
BA0006 4.26 5.04 3.13 2.80 3.78 4.65 0.20 0.16 2.43
BA0010 4.26 5.04 3.59 3.25 3.78 4.65 0.20 0.16 2.43
Three-Phase
200 V class
2A0008 4.26 5.04 2.80 2.46 3.78 4.65 0.20 0.16 2.20
2A0010 4.26 5.04 2.80 2.46 3.78 4.65 0.20 0.16 2.20
2A0012 4.26 5.04 3.13 2.80 3.78 4.65 0.20 0.16 2.20
Three-Phase
400 V class
4A0001 4.26 5.04 2.80 2.46 3.78 4.65 0.20 0.16 1.98
4A0002 4.26 5.04 2.80 2.46 3.78 4.65 0.20 0.16 1.98
4A0004 4.26 5.04 3.13 2.80 3.78 4.65 0.20 0.16 2.20
4A0005 4.26 5.04 3.78 3.45 3.78 4.65 0.20 0.16 2.20
4A0007 4.26 5.04 3.78 3.45 3.78 4.65 0.20 0.16 2.43
4A0009 4.26 5.04 3.78 3.45 3.78 4.65 0.20 0.16 2.43
W
H
W1
H1
H2
D
D2
t1
4-M4

5 Dimensions
YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual 19
Table 12 J1000 Finless Dimensions for Models 2A0018~4A0011(metric)
Table 13 J1000 Finless Dimensions for Models 2A0018~4A0011 (U.S. units)
Voltage Class Drive Model
CIMR-J
Dimensions (mm)
W H D D2 W1 H1 H2 t1 Weight
(kg)
Three-Phase
200 V class
2A0018 140 128 78 69.5 128 118 5 4 1.3
2A0020 140 128 78 69.5 128 118 5 4 1.3
Three-Phase
400 V class 4A0011 140 128 78 69.5 128 118 5 4 1.3
Voltage Class Drive Model
CIMR-J
Dimensions (in)
W H D D2 W1 H1 H2 t1 Weight
(lb.)
Three-Phase
200 V class
2A0018 5.52 5.04 3.07 2.74 5.04 4.65 0.20 0.16 2.87
2A0020 5.52 5.04 3.07 2.74 5.04 4.65 0.20 0.16 2.87
Three-Phase
400 V class 4A0011 5.52 5.04 3.07 2.74 5.04 4.65 0.20 0.16 2.87
4-M4
W
W1
H
H1H2
D
D2
t1

20 YASKAWA ELECTRIC TOBP C710606 40A YASKAWA AC Drive - J1000 Finless Installation Manual
6 Selecting an External Heatsink
6 Selecting an External Heatsink
This section describes the selection of a suitable external heatsink when using a J1000
Finless drive.
◆Data Required for Heatsink Selection
The table below shows data that are needed to select a heatsink that suits drive and
application.
Symbol Description
PLoss
Drive heat loss
Refer to J1000 Finless Drive Watt Loss Thermal Characteristics on page 13 to check the amount
of heat loss from the heatsink plate of the drive.
THSP_max
Maximum heatsink plate temperature
This is the temperature at the surface of the heatsink plate. It can be monitored with U4-08. The
maximum allowable value is 90 ºC.
TAmb External heatsink ambient temperature (air temperature around heatsink)
RθHSP
Heatsink plate thermal resistance
This value is 0.05 K/W
RθHSP-EHS
Thermal resistance between the heatsink plate and the external heatsink
Can be calculated by
Ath
Heat transfer area between drive heatsink plate and external heatsink
Note: Due to uneven heat generation across the heatsink plate (by arrangement of internal
components) the effective area for heat transfer is only ~70% of heatsink plate area. This
must be considered when calculating the thermal resistance.
Refer to Dimensions on page 16 for values of H and W to calculate the area of the heatsink
plate.
λComp Thermal conductivity of the heatsink thermal compound
dComp Thickness of the thermal compound
RθEHS Thermal resistance of the external heatsink
RθHSP-EHS = dComp
λcomp Ath