Detailed Description; Electronic Gear - Mitsubishi Electric EZMOTION MR-E Super MR-E-10A-QW003 Instruction Manual

5. PARAMETERS

5.2 Detailed description

5.2.1 Electronic gear

CAUTION
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The machine can be moved at any multiplication factor to input pulses.
The following setting examples are used to explain how to calculate the electronic gear.
(1) For motion in increments of 10 m per pulse
Machine specifications
Ball screw lead Pb 10 [mm]
Reduction ratio: n
Servo motor resolution: Pt
CMX
CDV
Hence, set 20 to CMX and 1 to CDV.
Wrong setting can lead to unexpected fast rotation, causing injury.
POINT
The guideline of the electronic gear setting range is 50
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.
Always set the electronic gear with servo off state to prevent unexpected
operation due to improper setting.
CMX Parameter No.3
CDV Parameter No.4
POINT
The following specification symbols are required to calculate the electronic gear
Pb : Ball screw 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]
1/2
10000 [pulses/rev]
Pt Pt
10 10
0 0
n Pb
S
CMX
CDV
Feedback pulse
Electronic gear
n NL/NM
1/2
NL
Servo motor
10000 [pulse/rev]
10000 20000 20
3
1000
1/2 10
5 - 24
1 CMX
50 .
CDV
Motor
Deviation
counter
Encoder
n
Pb 10[mm]
NM
1