Mitsubishi Electric MELSERVO MR-J4-A-RJ Series, Instruction Manual

Page: 299 / 416

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