SMC Networks LE Series User manual

Doc. no. LE-OM00201
Product name:
AC Servo Motor Driver
(MECHATROLINK type)
External Regenerative Resistance Calculation
MODEL/ Series/ Product Number
LE□ Series/LECY Series

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Contents
Introduction....................................................................................................3
1. Installation of [AC Servo Drive Capacity Selection
Program/SigmaJunmaSize+] ........................................................................4
2. Regenerative Resistance Calculation Method ........................................7
2.1 Startup of [AC Servo Drive Capacity Selection Program/SigmaJunmaSize+] 7
2.2 「Main menu」-「Wizard Sizing」............................................................................ 8
2.3 『Units』setting...................................................................................................... 8
2.4 Selection of [Mechanism].................................................................................... 9
2.5 [Ball screw (Horizontal)] setting ....................................................................... 10
2.5.1 Input value of LEFS (Ball screw) ...........................................................................10
2.5.2 Input value of LEJS (Ball screw)............................................................................11
2.5.3 Input value of LEY (Ball screw)..............................................................................12
2.5.4 Input value of LEYG (Ball screw)...........................................................................13
2.5.5 Setting of Drive Condition "Ball screw (Horizontal)" ........................................14
2.6 [Ball screw (Vertical)] setting............................................................................ 15
2.6.1 Input value of LEFS (Ball screw) ...........................................................................16
2.6.2 Input value of LEJS (Ball screw)............................................................................17
2.6.3 Input value of LEY (Ball screw)..............................................................................18
2.6.4 Input value of LEYG (Ball screw)...........................................................................19
2.6.5 Setting of drive condition "Ball screw (Vertical)" ..............................................20
2.7 [Timing belt (Horizontal)] setting...................................................................... 21
2.7.1 Input value of LEFB (Timing belt)..........................................................................22
2.7.2 Input value of LEJB (Timing belt) ..........................................................................22
2.7.3 Setting of drive condition [Timing belt (Horizontal)]". .........................................23
2.8 [Operating condition] setting............................................................................ 24
2.9 [Motor selection] setting................................................................................. 25
2.10 [External Regenerative Resistance "Capacity"/"Resistance"] Check ......... 26

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Introduction
Calculating the regenerative resistance
It is necessary use the SigmajunmaSize+ application to be able to calculate and size the regenerative
resistor. The software is downloadable from the SMC website.- Download the [AC servo drivecapacity
program/SigmaJunmaSize+]. Using this operation manual for SigmaJunmaSize+ calculate the
regenerative resistance. The regenerative resistor has to be prepared and supplied by the user.
It will be necessary for the user to refer to the operation manual of applicable actuator along with the
operation manual for the LECYM and the LECYU.
The following minimum hardware and software will be necessary
PC PC/AT Compatible personal computer
CPU Pentium 200MHz or more
Main Memory 64MB (128MB recommended)
Free Hard Disk Space 20MB or more
Monitor Super VGA (800*600 or greater using
a small font)
Number of Colors 256 colors or more
OS Windows 7 *1
Windows Vista SP1*2
Windows XP SP3
Browser InternetExplorer5.01 SP1 or later
*1 : Please choose belows at "User Account Control" when using Windows 7
/ [Always notify me when]
/ [Default-Notify me only when programs try to make changes to my computer]
/ [Notify me only when programs try to make changes to my computer
(do not dim my desktop) ]
*2 : Please enable "User Account Control" when using Windows Vista.

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1. Installation of [AC Servo Drive Capacity Selection
Program/SigmaJunmaSize+]
Install the [AC Servo Drive Capacity Selection Program/SigmaJunmaSize+] to the PC after it has been
downloaded.
- Download it to the PC hard disk and save it.
-. Run the installation file and follow the instructions given in the installation dialog box.
(The upgrade of SigmaJunmaSize+ will be automatically carried out after installation above.)
- When Windows 7 / Windows Vista is used, execute it as an administrator.
Start the [SigmaJunmaSizeSA□□□Ja.exe]. (Upgrade No. is displayed in the boxes, □□□.)
(1) [InstallShield Wizard] display is started.
Click the "Next>" button.
(2) Confirm the End-User License Agreement, and select "I accept the terms of the license agreement."
and click "Next>".

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(2) Click the "Next>" button.
To change the installation location, click the "Change..." button on the display, and specify the new
installation location.
(4) Click the "Next>" button.
(5) Click the "Install" button.

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(6) Installation process starts.
After installation is complete, click the "Finish" button.

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2. Regenerative Resistance Calculation Method
2.1 Startup of [AC Servo Drive Capacity Selection Program/SigmaJunmaSize+]
Click "SigmaJunmaSize+" from the start menu.
The "SigmaJunmaSize+ En" display will appear.
Click the "Enter" button.

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2.2 「Main menu」-「Wizard Sizing」
Click "Wizard Sizing".
2.3 『Units』setting
Select the following units from the pull-down menu.
Length mm
Speed mm/s
Acceleration mm/s2
Inertia kg・cm2
Click the "Next" button.

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2.4 Selection of [Mechanism]
Select the mechanism in accordance with the model and mounting orientation of the electrical actuator.
Mechanism Model Mounting
orientation
Ball screw (Horizontal) LEFS / LEJS / LEY / LEYG Horizontal
Ball screw (Vertical) LEFS / LEJS / LEY / LEYG Vertical
Timing belt (Horizontal) LEFB / LEJB Horizontal
- [Ball screw (Horizontal)] -> Chapter "2.5"
- [Ball screw (Vertical)] -> Chapter "2.6"
- [Timing belt (Horizontal)] -> Chapter "2.7"
Click the "Next" button.

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2.5 [Ball screw (Horizontal)] setting
Enter each item and click the "Next" button.
Execute "2.5.5 Setup of drive condition "Ball screw (Horizontal)".
Input values of each actuator are as follows.
Input value of LEFS (Ball screw): Refer to "2.5.1".
Input value of LEJS (Ball screw): Refer to "2.5.2".
Input value of LEY (Ball screw): Refer to "2.5.3".
Input value of LEYG (Ball screw): Refer to "2.5.4".
2.5.1 Input value of LEFS (Ball screw)
Actuators type LEFS25 LEFS32 LEFS40
Lead symbol H A B H A B H A B
SQ
Series
Lead 20 12 6 24 16 8 30 20 10
No. Items to enter units Input value
(1) Mass of load kg Enter the weight of the workpiece to be transferred.
(2) Mass of table kg 0.2 0.3 0.55
(3) Thrust N 3
(4) Coefficient of
friction - 0.05
(5) Gear ratio - 1
Gear+coupling
inertia kg.cm2 0.02 0.08
(6)
Gear efficiency - 1
(7) Ball screw pitch mm 20 12 6 24 16 8 30 20 10
(8) Ball screw
diameter mm 10 12 15
Ball screw length mm stroke + 150 stroke + 185 stroke + 235
(9) Ball screw
density kg.m3 Select "Iron" from the pull-down menu.
- Total efficiency - 0.8