6SEQUENCE PROGRAM USED FOR POSITIONING CONTROL

[2]Types of stop processes

MELSEC-Q

The operation can be stopped with deceleration stop, sudden stop or immediate

stop.

(1)Deceleration stop 1

The operation stops with "deceleration time 0 to 3" (

Pr.30 ).

Pr.10

,

Pr.28

,

Pr.29

,

Which time from "deceleration time 0 to 3" to use for control is set in positioning

data ( Da.4 ).

(2)Sudden stop

The operation stops with "

Pr.36

Sudden stop deceleration time".

(3)Immediate stop

The operation does not decelerate.

The QD75 immediately stops the pulse output, but the operation will coast for the droop pulses accumulated in the drive unit's deviation counter.

Positioning speed

Actual deceleration time

Set deceleration time

Positioning speed

Positioning speed

Actual sudden stop

 

deceleration time

 

Pr. 36 Sudden stop

Coast for the droop pulses accumulated

in the drive unit's deviation counter.

deceleration time

 

Fig. 6.15 Types of stop processes

REMARK

1 "Deceleration stop" and "sudden stop" are selected with the details parameter 2 "stop group 1 to 3 sudden stop selection". (The default setting is "deceleration stop".)

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Image 263
Mitsubishi Electronics QD75D, QD75P user manual Types of stop processes, Pr.30 Pr.10 Pr.28 Pr.29, Pr.36