Mitsubishi Electric MR-JE-_A Instruction Manual page 169

5. PARAMETERS
No./symbol/ Setting
name digit
PC03 Start/stop the servo motor smoothly.
STC Set the time of the arc part for S-pattern acceleration/deceleration.
S-pattern Setting "0" will make it linear acceleration/deceleration.
acceleration/
deceleration
time constant
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
(Example) At the setting of STA 20000, STB 5000 and STC 200, the actual arc part
Setting range: 0 to 5000
PC04 Set the constant of a primary delay to the torque command.
TQC
Torque
command
time constant
Setting range: 0 to 50000
Speed command
0 r/min
STC
STA
STA: Acceleration time constant ([Pr. PC01])
STB: Deceleration time constant ([Pr. PC02])
STC: S-pattern acceleration/deceleration time constant ([Pr. PC03])
for acceleration or by
STA
times are as follows.
Acceleration: 100 ms
2000000
= 100 [ms] < 200 [ms]
20000
Therefore, it will be limited to 100 ms.
Deceleration: 200 ms
2000000
= 400 [ms] > 200 [ms]
5000
Therefore, it will be 200 ms as you set.
Torque command
Torque
TQC
TQC: Torque command time constant
Function
STC STC
STB
2000000
for deceleration.
STB
After filtering
TQC
5 - 30
Initial
value
[unit]
0
[ms]
Time
STC
0
[ms]
Time
Control mode
P S T