3 - 27
3. SIGNALS AND WIRING
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
(Note 2) Rotation direction
Forward rotation (CCW)
Reverse rotation (CW)
ST2
ST1
0
0
Stop
(Servo lock)
0
1
Forward rotation (CCW)
1
0
Reverse rotation (CW)
1
1
Stop
(Servo lock)
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.
ST2
SP1
SP2
SP3
DOCOM
DICOM
24VDC
Servo amplifier
ST1
(Note 2)
(Note 1)
Note 1. For the sink I/O interface. For the source I/O interface, refer to section 3.8.3.
2. Set the input devices by parameter No. PD03 to PD14.
Driver