3-6
3
1. Outline of mode
Connection
Velocity Control Mode
Outline
You can control the speed according to the analog speed command from the host con-
troller or the speed command set in the servo driver.
Note
Only for standard type and communication type are not provided with analog input and
V-COIN output.
Function
Note
(1) Velocity control by analog speed command
The analog speed command input voltage is converted to equivalent digital speed
command. You can set the lter to eliminate noise or adjust the offset.
• Relevant parameters
Parameter
No.
Title Range Unit Function
Pr3.00
Speed setup, Internal/
External switching
0 to 3 —
This driver is equipped with internal speed
setup function so that you can control the
speed with contact inputs only.
Pr3.01
Speed command
rotational direction
selection
0 to 1 —
Select the Positive/Negative direction
specifying method.
Pr3.02
Input gain of speed
command
10 to 2000
(r/min)
/V
Based on the voltage applied to the
analog speed command (SPR), set up the
conversion gain to motor command speed.
Pr3.03
Reversal of speed
command input
0 to 1 —
Specify the polarity of the voltage applied
to the analog speed command (SPR).
Pr4.22
Analog input 1 (AI1)
offset setup
−5578 to
5578
0.359 mV
Set up the offset correction value applied
to the voltage fed to the analog input 1.
Pr4.23
Analog input 1 (AI1)
lter
0 to 6400
0.01 ms
Set up the time constant of 1st delay lter
that determines the lag time behind the
voltage applied to the analog input 1.
For details of these parameters, refer to P.4-6 to P.4-85 “Details of parameter”.
Only for standard type and communication type are not provided with analog input.
Servo dr ver
Host
contro er
Ve oc ty
contro
sect on
Process of ana og
speed command nput
Ana og
speed command
(±10 V)
ZEROSPD nput
AT-SPEED output
V-COIN output
Interna speed
command sett ngs
Speed zero c amp (ZEROSPD) funct on
Atta ned speed output
Speed co nc dence output
Related page
• P.3-14 “Control Block Diagram”
• P.3-21 “Wiring Diagram to the connector, X4”
SE SG SF
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