Mitsubishi Electric MELSERVO-JE MR-JE-100A, Instruction Manual

Page: 156 / 310

5. PARAMETERS
5 - 29
Control mode
No./
symbol/name
Setting
digit
Function
Initial
value
[unit]
P S T
PC03
STC
S-pattern
acceleration/d
eceleration
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.
Speed
command
Servo motor
speed
0 r/min
STA
STC
Time
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
2000000
20000
= 100 [ms]
᧸
200 [ms]
Therefore, it will be limited to 100 [ms].
During 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
command
time constant This is used to set the constant of a primary delay to the torque command.
TQC TQC
Time
Torque
Torque command
After filtering
TQC: Torque command time constant
Setting range: 0 to 50000
0
[ms]