3-21
H
Operation Example
D
Internal Speed Control Se Position Control (HA/LA/V/W Models)
Speed selection
command 1
SPD1
Speed selection
command 2
SPD2
Switch rotation
direction
RDIR
Motor operation
Speed 2
Speed 3
Speed 1
Speed 1
Pulse
command
Positioning
completed
(INP)
6 ms min.
6 ms min.
3-5-4 Electronic Gear Function: Position Control
H
Function
•
The motor will be driven with a pulse determined by multiplying the command pulse count by the
electronic gear ratio.
•
The electronic gear is useful for the following applications:
S
To fine-tune the position and speed of two lines that must be synchronized.
S
When using a positioner with a low command pulse frequency.
S
To set the machine movement per pulse to a specific value, such as 0.01 mm.
H
Setting User Parameters
•
The electronic gear is set as G1 divided by G2 (G1/G2). G1 is set in user parameter Cn-24; G2 is set
in Cn-25. The target pulse count is computed as follows:
Target pulse count = Command pulse count x G1/G2
•
If G1/G2 = 1, the motor will turn once for every 8,192 command pulses (driver running at a factor of
4X).
•
One pulse for the position deviation (deviation counter) display and positioning completion range will
be equivalent to one input pulse (here the unit is said to be the command).
Operation
Chapter 3
