Mitsubishi Electric MELSERVO-J4 MR-J4 A Series - Page 172

5. PARAMETERS
5 - 29
Control
mode
No./symbol/name
Setting
digit
Function
Initial
value
[unit]
PST
PC03
STC
S-pattern
acceleration/dec
eleration time
constant
This is used to smooth start/stop of the servo motor.
Set the time of the arc part for S-pattern acceleration/deceleration.
ㅦᐲᜰ઎
࿁ࠨ
ォ
ㅦࡏ
ᐲࡕ

࠲
0r/min
STA
STC
ᤨ㑆
STC
STB
STC STC
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.
During acceleration: 100 ms
= 100 [ms] < 200 [ms]
Therefore, it will be limited to 100 [ms].
During deceleration: 200 ms
= 400 [ms] > 200 [ms]
Therefore, it will be 200 [ms] as you set.
Setting range: 0 to 5000
0
[ms]
PC04
TQC
Torque
command time
constant
This is used to set the constant of a primary delay to the torque command.
63% 63%
ᤨ㑆
࠻࡞ࠢ
࠻࡞ࠢᜰ઎
ࡈࠖ࡞࠲ᓟ
TQC: Torque command time constant
Setting range: 0 to 50000
0
[ms]
2000000
5000
2000000
20000
Servo motor
speed
0 r/min
Time
A
fter filtering
Time
Torque
Speed command
Torque command
TQC
TQC