Mitsubishi Electric MR-J4-_GF, Instruction Manual

Page: 174 / 274

7. PARAMETERS
7 - 25
No./symbol/
name
Setting
digit
Function
Initial
value
[unit]
Control
mode
C
P P
S
PT51
STC
S-pattern
acceleration/d
eceleration
time constant This parameter is used to smooth start/stop of the servo motor or linear servo motor.
Set the time of the arc part for S-pattern acceleration/deceleration.
Setting "0" will make it linear acceleration/deceleration.
Acceleration time
constant
Servo motor
speed
0 [r/min]
Deceleration time
constant
Ta
Ta + STC Tb
Tb + STC
Rated speed
Preset speed
Ta: Time until preset
speed is reached
Tb: Time until stop
The actual operation time for the arc part is limited as shown by the following
calculations. Thus, if a large value is set to STA (acceleration time constant) or STB
(deceleration time constant), the actual operation time for the arc part may differ from the
setting value of the S-pattern acceleration deceleration time constant. The setting will be
disabled during home position return.
When a value exceeding 1000 ms is set, the parameter value will be clamped to 1000
ms.
The upper limit value of the actual time for the arc part is limited by
2000000
STA
for acceleration and by
2000000
STB
for deceleration.
(Example) At the setting of STA = 20000, STB = 5000 and STC = 200, the actual times
for the arc part 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]
PT65
PVC
Jog speed
command Set the Jog speed command.
If a value smaller than "1.00" is set, the servo motor may not rotate.
Setting range: 0.00 to instantaneous permissible speed 100.00
[r/min]/
[mm/s]