Mitsubishi Electric MELSERVO-J4 Instruction Manual page 299

7. PARAMETERS
No./ Setting
symbol/name digit
PC02 Set a deceleration time constant for the automatic operation of the indexer method.
STB Set a deceleration time from the rated speed to 0 r/min.
Deceleration Additionally, when 20000 ms or more value is set, it will be clamped to 20000 ms.
time constant
1
Setting range: 0 to 50000
PC03 This enables to start/stop the servo motor or linear servo motor smoothly.
*STC Set the time of the arc part for S-pattern acceleration/deceleration.
S-pattern To enable the parameter values in the positioning mode, cycle the power after setting.
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
When 1000 ms or more value is set, it will be clamped to 1000 ms.
Setting range: 0 to 5000
PC05 Set a positioning speed for the automatic operation speed 1, 2 of the indexer method.
SC1
Automatic Setting range: 0 to permissible instantaneous speed
operation
speed 1
PC06 Set a positioning speed for the automatic operation speed 1, 2 of the indexer method.
SC2
Automatic Setting range: 0 to permissible instantaneous speed
operation
speed 2
PC07 Set a JOG speed of the manual operation mode, JOG operation, and home position
return mode of the indexer method.
SC3
Manual
operation Setting range: 0 to permissible instantaneous speed
speed 1
Speed command
0 r/min
(0 mm/s)
STC
STA
STA: Speed acceleration time constant (Set with point table or program.)
STB: Speed deceleration time constant (Set with point table or program.)
STC: S-pattern acceleration/deceleration time constant ([Pr. PC03])
for acceleration or by
STA
times are as follows.
During acceleration: 100 ms
2000000
= 100 [ms] < 200 [ms]
20000
Therefore, it will be limited to 100 [ms].
During deceleration: 200 ms
2000000
= 400 [ms] > 200 [ms]
5000
Therefore, it will be 200 [ms] as you set.
Function
STC STC
STB
2000000
for deceleration.
STB
7 - 42
Initial
value
[unit]
0
[ms]
0
[ms]
Time
STC
100
[r/min]
500
[r/min]
1000
[r/min]
Control mode
CP CL PS