6 POSITIONING CONTROL

6.13Speed Control ()

(1)Speed control for the specified axis is executed.

(2)Control includes positioning loops for control of servo amplifiers.

(3)Speed control () uses the VF (Forward) and VR (Reverse) servo instructions.

 

 

 

 

 

Items are set in peripheral devices

 

 

 

 

 

 

Common

Arc

Parameter block

Others

 

 

 

 

blockParameterNo.

Axis Address/travelvalue speedCommand timeDwell code-M

valuelimitTorque pointAuxiliary Radius pointCentral unitControl

input

interpolation

Servo

Positioning

 

valuelimitSpeed timeAcceleration timeDeceleration decelerationstopRapid time valuelimitTorque processingDecelerationon stop

errorAllowablerange for circular ratiocurve-S Cancel ON/OFF-WAIT

Number of

 

 

 

 

Speed change

instruction

method

control axes

 

 

 

 

 

VF

 

 

 

 

1

Valid

 

 

 

VR

 

 

 

 

 

 

 

 

 

 

: Must be set

 

 

 

 

: Set if required

[Control details]

(1)Controls the axis at the specified speed until the input of the stop command after starting of the servomotors.

•VF ......... Forward direction start

•VR ........ Reverse direction start

(2)Current value does not change at "0".

V

Setting speed

Stop command accept

Speed

control Operation speed start

Stop

t

Fig.6.26 Speed control ()

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