Internal Speed Control Mode - Mitsubishi Electric MELSERVO-JN Series Instruction Manual

3. SIGNALS AND WIRING
(c) Limiting torque (TLC)
TLC turns on when the servo motor torque reaches the torque limited by the forward torque limit, the
reverse torque limit or the internal torque limit 2.

3.6.2 Internal speed control mode

(1) Internal speed command settings
(a) Speed command and speed
The servo motor operates at the speed set in the parameters.
Up to 8 speeds can be set to the internal speed command.
The following table indicates the rotation direction according to forward rotation start (ST1) and reverse
rotation start (ST2) combination.
(Note 1) Input device
ST2
0
0
1
1
Note 1. 0: off
1: on
2. If the torque limit is canceled during servo lock, the servo
motor may suddenly rotate according to position deviation
in respect to the command position.
Connect the wirings as follows when operating in forward or reverse rotation with the internal speed
command set to the eighth speed.
(Note 2) Rotation direction
ST1
Stop
0
(Servo lock)
1 Forward rotation (CCW)
0 Reverse rotation (CW)
Stop
1
(Servo lock)
(Note 1)
Note 1. For sink I/O interface. For source I/O interface, refer to section 3.8.3.
2. Set the input devices by parameter No. PD02 to PD14.
Forward rotation (CCW)
Servo amplifier
ST1
ST2
SP1
SP2
(Note 2)
SP3
DOCOM
DICOM
24VDC
3 - 25
Reverse rotation (CW)