Speed Control Mode (S) - Mitsubishi Electric MELSERVO-J5 User Manual

Speed control mode (S)

Set [Pr. PA01.0] to "2" (Speed control mode).
The speed can be controlled with the servo parameter setting or with the applied voltage of VC (Analog speed command).
Speed setting
■Speed command and speed
The servo motor is operated at the speed set in the servo parameter or at the speed set in the applied voltage of VC (Analog
speed command). The relation between the applied voltage in VC (Analog speed command) and the servo motor speed is
shown below.
The rated speed is achieved at ±10 V in the initial setting. The servo motor speed at ±10 V can be changed with [Pr. PC12
Analog speed command - Maximum speed].
Rated speed [r/min]
Speed
[r/min]
-10
0
CW
VC applied voltage [V]
direction
Rated speed [r/min]
The rotation direction can be selected by using ST1 (Forward rotation start), ST2 (Reverse rotation start), or VC (Analog
speed command).
*1
Input device
ST2 ST1
0 0
0 1
1 0
1 1
*1 0: Off
1: On
*2 If the torque limit is canceled during servo-lock, the servo motor may suddenly rotate, depending on the amount of the position deviation
from the command position.
For linear servo motors, CCW is the positive direction and CW is the negative direction.
2 CONTROL MODE
96
2.3 Control mode [A]
CCW direction
+10
Forward rotation (CCW)
*2
Rotation direction
VC (Analog speed command)
Polarity: +
Stop (servo-lock)
CCW
CW
Stop (servo-lock)
Forward rotation (CCW)
0 V
Stop (servo-lock)
Stop (no servo-lock)
Stop (servo-lock)
Reverse rotation (CW)
Reverse rotation (CW)
Internal speed
Polarity: -
Stop (servo-lock) Stop (servo-lock)
CW CCW
CCW CW
Stop (servo-lock) Stop (servo-lock)