List Of Details - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

5. PARAMETERS

5.3.2 List of details

No. Symbol
PC01 STA Acceleration time constant
Used to set the acceleration time required to reach the rated
speed from 0r/min in response to the analog speed command and
internal speed commands 1 to 7.
Speed
Rated
speed
Zero
speed
For example for the servo motor of 3000r/min rated speed, set
3000 (3s) to increase speed from 0r/min to 1000r/min in 1 second.
PC02 STB Deceleration time constant
Used to set the deceleration time required to reach 0r/min from
the rated speed in response to the analog speed command and
internal speed commands 1 to 7.
PC03 STC S-pattern acceleration/deceleration time constant
Used to smooth start/stop of the servo motor.
Set the time of the arc part for S-pattern acceleration/deceleration.
Speed command
STA: Acceleration time constant (parameter No. PC01)
STB: Deceleration time constant (parameter No. PC02)
STC: S-pattern 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
for acceleration or by
STA
At the setting of STA 20000, STB 5000 and STC 200,
(Example)
the actual arc part times are as follows:
During acceleration: 100[ms]
During deceleration: 200[ms]
Name and Function
If the preset speed command is
lower than the rated speed,
acceleration/deceleration time
Parameter Parameter
No. PC01 setting No. PC02 setting
0r/min
STC STB STC
STA STC
STC
(parameter No. PC03)
2000000
for deceleration.
STB
Limited to 100[ms] since
2000000
100[ms] 200[ms].
20000
200[ms] as set since
2000000
400[ms] 200[ms].
5000
Initial
Value
0
will be shorter.
Time
0
0
Time
5 - 28
Setting Control Mode
Unit
Range Position Speed Torque
ms 0
to
50000
ms 0
to
50000
ms 0
to
1000