Electronic Gear - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

5. PARAMETERS

5.1.8 Electronic gear

No. Symbol
Electronic gear numerator
PA06 CMX
(command pulse multiplying factor numerator)
Electronic gear denominator
PA07 CDV
(command pulse multiplying factor denominator)
CAUTION
(1) Concept of electronic gear
The machine can be moved at any multiplication factor to input pulses.
Command
pulse train
CMX Parameter No. PA06
CDV Parameter No. PA07
The following setting examples are used to explain how to calculate the electronic gear:
Parameter
Name
Wrong setting can lead to unexpected fast rotation, causing injury.
POINT
The electronic gear setting range is
If the set value is outside this range, noise may be generated during
acceleration/ deceleration or operation may not be performed at the preset
speed and/or acceleration/deceleration time constants.
The following specification symbols are required to calculate the electronic gear.
Number of command input pulses
per revolution
Parameter No. PA05
"0" (Initial value)
FBP
Other than "0"
POINT
The following specification symbols are required to calculate the electronic gear
Pb : Ballscrew lead [mm]
n : Reduction ratio
Pt : Servo motor resolution [pulses/rev]
: Travel per command pulse [mm/pulse]
0
S : Travel per servo motor revolution [mm/rev]
: Angle per pulse [ /pulse]
: Angle per revolution [ /rev]
Initial
Value
1
1
1 CMX
10 CDV
Electronic gear
Parameter No. PA06, No. PA07
CMX
CDV
Pt
5 - 6
Setting Control Mode
Unit
Range Position Speed Torque
1 to
1048576
1 to
1048576
2000.
Motor
Deviation
counter
Encoder