SMC Networks LECSB2-T Series User Manual

5. PARAMETERS
5 - 39
No./symbol/
name
Setting
digit
Function
Initial
value
[unit]
Control
mode
P
S
T
PC03
STC
S-pattern
acceleration/
deceleration
time constant
Start/stop the servo motor smoothly.
Set the time of the arc part for S-pattern acceleration/deceleration.
Setting "0" will make it linear acceleration/deceleration.
Speed command
Servo motor
speed
0 r/min
STA
STC
Time
STC
STB
STC STC
(Linear servo
motor speed)
(0 mm/s)
STA: Acceleration time constant ([Pr. PC01])
STB: Deceleration time constant ([Pr. PC02])
STC: S-pattern acceleration/deceleration time constant ([Pr. PC03])
Long setting of STA (acceleration time constant) or STB (deceleration time
constant) may produce an error in the time of the arc part for the setting of the S-
pattern acceleration/deceleration time constant.
The upper limit value of the actual arc part time is limited by
2000000
STA
for acceleration or by
2000000
STB
for deceleration.
(Example) At the setting of STA 20000, STB 5000 and STC 200, the actual arc part
times are as follows.
Acceleration: 100 ms
2000000
20000
= 100 [ms] < 200 [ms]
Therefore, it will be limited to 100 ms.
Deceleration: 200 ms
2000000
5000
= 400 [ms] > 200 [ms]
Therefore, it will be 200 ms as you set.
Setting range: 0 to 5000
0
[ms]
PC04
TQC
Torque/thrust
command
time constant
Set the constant of a primary delay filter for the torque/thrust command.
TQC TQC
Time
Torque
Torque command (Thrust command)
After filtering
(Thrust)
TQC: Torque/thrust command time constant
Setting range: 0 to 50000
0
[ms]
PC05
SC1
Internal
speed
command 1
Internal
speed limit 1
Set the speed 1 of internal speed commands.
Setting range: 0 to instantaneous permissible speed
100
[r/min]/
[mm/s]
Set the speed 1 of internal speed limits.
Setting range: 0 to instantaneous permissible speed

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English