Справочник Пользователя для Mitsubishi Electronics MR-MC241

6 - 3

6. APPLICATION FUNCTIONS

6.1.2 Settings

Control parameters

Parameter No.

(Note)

Abbreviation

Name

Initial

Value

Unit

Setting

range

Function

020A *CMXL

Electronic

gear

numerator (lower)

0001h

1 to

5242879

(32 bits)

Set the numerator for electronic gears.

020B *CMXH

Electronic

gear

numerator (upper)

0000h

020C *CDVL

Electronic

gear

denominator
(lower)

0001h

1 to

589823

(32 bits)

Set the denominator of the electronic gear.

020D *CDVH

Electronic

gear

denominator
(upper)

0000h

Note. The parameters with a * mark at the front of the parameter abbreviation become valid when the system is started.

6.1.3 Setting example of electronic gears

The following is a setup example for use of µm as a command unit for a piece of equipment that uses ball
screws.
(1) Equipment specification

Item Symbol

Value

Unit

Remarks

Ball screw lead

=10000

m

Deceleration ratio

1/2

Number of encoder pulses per revolution

4194304

pulse/rev

Servo motor

Pt = 4194304

Deceleration constant n = 1/2

Ball screw pitch Pb = 10 [mm]

Number of encoder pulses
per revolution

(2) Calculation of electronic gears

CMX
CDV

n Pb

4194304

1/2 10000

4194304

5000

400000h

1388h

Note. S is the movement amount for 1 revolution of the servo motor.

(3) Parameter settings

Because the value obtained by calculating the electronic gear is within the setting range, the value can be
set without reducing.

Parameter No.

(Note)

Abbreviation

Name Setting

value

020A

*CMXL

Electronic gear numerator (lower)

0000h

020B

*CMXH

Electronic gear numerator (upper)

0040h

020C

*CDVL

Electronic gear denominator (lower)

1388h

020D

*CDVH

Electronic gear denominator (upper)

0000h

Note. The settings for the parameters with a * mark at the front of the abbreviation are validated when the system is

restarted.