102
3 BASIC FUNCTION
3.14 Acceleration/deceleration function
Acceleration/deceleration
Acceleration/deceleration is performed in accordance with the specified acceleration/deceleration [command unit/s
2
]. Unlike
the acceleration/deceleration time constants, acceleration/deceleration can be performed independent of the rated speed of
the servo motor.
The control mode influences whether the acceleration/deceleration is set in the servo parameters, objects, or other settable
areas.
Setting example
To accelerate at 0.5 [s] from 0 [command unit/s] to 1500 [command unit/s], set 3000 [command unit/s
2
] for the acceleration.
To decelerate at 2 [s] from 1500 [command unit/s] to 0 [command unit/s], set 750 [command unit/s
2
] for the deceleration.
Precautions
• The parameter for setting the acceleration/deceleration data varies depending on the unit selected in [Pr. PT01.1 Speed/
acceleration/deceleration unit selection]. However, the same object is used for setting the acceleration/deceleration data
regardless of the unit selected. Refer to [Pr. PT01.1] for details. For the precautions for each acceleration/deceleration data,
refer to the setting parameters and objects.
Setting method
Select an acceleration/deceleration unit in [Pr. PT01.1 Speed/acceleration/deceleration unit selection].
Relevant acceleration/deceleration data
Page 76 Relevant speed data and acceleration/deceleration data
Servo
parameter
Symbol
Name
Outline
PT01.1
**CTY
Speed/acceleration/deceleration unit selection
Select an acceleration/deceleration unit.
0: ms
1: Command unit/s
2
Servo motor speed
Acceleration
Time [s]
Time [s]
Deceleration
Speed
[command unit/s]
Acceleration/deceleration
[command unit/s
2
]
Acceleration time =
Servo motor speed
Acceleration
Deceleration time =
Servo motor speed
Deceleration
Summary of Contents for MELSERVO-JET MR-JET-G-N1 Series
Page 1: ...MR JET User s Manual Function MR JET _G MR JET _G N1 Mitsubishi Electric AC Servo System ...
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