SMC Networks LECSB2-T Series - Page 655

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16. POSITIONING MODE
2) Program example 2 (Incorrect usage)
For continuous operations, the acceleration time constant and the deceleration time constant
cannot be changed at each change of the servo motor speed. Therefore, even if you insert an
"STA", "STB", or "STD" command at a speed change, the command is invalid.
Command
Description
SPN (500)
Servo motor speed
500 [r/min]
a)
STA (200)
Acceleration time constant
200 [ms]
b)
STB (300)
Deceleration time constant
300 [ms]
c)
MOV (500)
Absolute value travel command
500 [×10
STM
μm]
d)
SPN (1000)
Servo motor speed
1000 [r/min]
e)
STC (500)
Acceleration/deceleration time
constant
500 [ms]
f)
MOVA (1000)
Absolute value continuous travel
command
1000 [×10
STM
μm]
g)
SPN (1500)
Servo motor speed
1500 [r/min]
h)
STC (100)
Acceleration/deceleration time
constant
100 [ms]
i)
MOVA (0)
Absolute value continuous travel
command
0 [×10
STM
μm]
j)
STOP
Program stop
Disabled
Disabled
b) Acceleration time constant
(200 ms)
a) Servo motor speed
(500 r/min)
e) Servo motor
speed
(1000 r/min)
c) Deceleration time constant
(300 ms)
h) Servo motor
speed
(1500 r/min)
j) Absolute value continuous
travel command
(0 × 10
STM
μ
m)
g) Absolute value
continuous travel
command
(1000 × 10
STM
μ
m)
d) Absolute value
travel command
(500 × 10
STM
μ
m)
b) Acceleration time constant
(200 ms)
Forward rotation
0 r/min
Reverse rotation
Servo motor
speed