Mitsubishi Melsec-Q QD75P1 User Manual page 492

12 CONTROL SUB FUNCTIONS
Command speed = V (The command frequency at that time is represented by "f")
Actual speed = V' (The command frequency at that time is represented by " f' ")
1) Movement amount per pulse < 1
2) Movement amount per pulse = 1
3) Movement amount per pulse > 1
Fig. 12.9 Relation of the movement amount per pulse to the command speed and actual speed
[2] Relation between the movement amount per pulse and speed
The following shows the relation of the "movement amount per pulse (A)" to the
command speed and actual speed. The command speed is the speed
commanded by each control, and the actual speed is the actual feedrate.
V
Command speed V
Relation of the command speed and actual speed
The actual speed becomes faster than the
V < V
' (f < f')
command speed.
The actual speed is the same as the command
V = V
' (f = f')
speed.
The actual speed becomes slower than the
V > V
' (f > f')
command speed.
1)
2)
3)
12 - 16
MELSEC-Q
Actual speed V'
t