SMC Networks LECSB Series, Руководство по эксплуатации

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5 - 8
5. PARAMETERS
5.1.8 Electronic gear
Parameter
Initial
value
Unit
Setting
range
Control mode
No. Symbol Name Position Speed Torque
PA06 CMX
Electronic gear numerator
(command pulse multiplying factor numerator)
1
1 to
1048576
PA07 CDV
Electronic gear denominator
(command pulse multiplying factor denominator)
1
1 to
1048576
CAUTION
Incorrect setting can lead to unexpected fast rotation, causing injury.
POINT
The electronic gear setting range is
10
1
CDV
CMX
2000 .
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.
(1) Concept of electronic gear
The machine can be moved at any multiplication factor to input pulses.
CDV
FBP
Command
pulse train
Pt
Other than "0"
"0"(Initial value) CMX
Servo motor
Encoder
M
Number of command input pulses
per revolution
Parameter No.PA05
Electronic gear
Parameter No.PA06, PA07
Deviation
counter
CDV
CMX Parameter No.PA06
Parameter No.PA07
The following setting examples are used to explain how to calculate the electronic gear.
POINT
The following specification symbols are required to calculate the electronic gear
Pb : Ball screw lead [mm]
1/n : Reduction ratio
Pt : Encoder resolution of servo motor [pulses/rev]
0 : Travel per command pulse [mm/pulse]
S : Travel per servo motor revolution [mm/rev]
: Angle per pulse [ /pulse]
: Angle per revolution [ /rev]