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5. PARAMETERS
No. Symbol Name and function
Initial
value
Unit
Setting
range
Control mode
Position Speed Torque
PC03 STC S-pattern acceleration/deceleration time constant
Used to smooth start/stop of the servo motor.
Set the time of the arc part for S-pattern acceleration/
deceleration.
STA: Acceleration time constant (parameter No.PC01)
STB: Deceleration time constant (parameter No.PC02)
STC: S-pattern acceleration/deceleration time constant
(parameter No.PC03)
Speed command
Servo motor
Speed
0r/min
STC
STA STC
STC STB
STC
Time
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
At the setting of STA 20000, STB 5000 and STC 200,
the actual arc part times are as follows.
for acceleration or by for deceleration.
(Example)
During acceleration: 100[ms]
2000000
20000
100[ms] 200[ms].
Limited to 100[ms] since
During deceleration: 200[ms]
2000000
5000
400[ms] 200[ms].
200[ms] as set since
2000000
STA
2000000
STB
0 ms 0
to
1000
PC04 TQC Torque command time constant
Used to set the constant of a low-pass filter in response to
the torque command.
Torque command
TQC
TQC
Time
After
filtered
TQC: Torque command time constant
Torque
0 ms 0
to
20000
PC05 SC1 Internal speed command 1
Used to set speed 1 of internal speed commands.
100 r/min 0 to
instan-
taneous
permi-
ssible
speed
Internal speed limit 1
Used to set speed 1 of internal speed limits.