Download MR-J2S-„A

3. SIGNALS AND WIRING
3.4.2 Speed control mode
(1) Speed setting
(a) Speed command and speed
The servo motor is run at the speeds set in the parameters or at the speed set in the applied
voltage of the analog speed command (VC). A relationship between the analog speed command
(VC) applied voltage and the servo motor speed is shown below:
The maximum speed is achieved at 10V. The speed at 10V can be changed using parameter No.
25.
Rated speed [r/min]
Speed [r/min]
10
Forward rotation (CCW)
CCW direction
0
10
VC applied voltage [V]
CW direction
Rated speed
Reverse rotation (CW)
The following table indicates the rotation direction according to forward rotation start (ST1) and
reverse rotation start (ST2) combination:
(Note) External input signals
Rotation direction
Analog speed command (VC)
Internal speed
commands
ST2
ST1
0
0
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
0
1
CCW
CCW
0
CW
Stop
(No servo lock)
CW
1
CCW
CW
1
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
1
Polarity
0V
Polarity
Note.0: ST1/ST2-SG off (open)
1: ST1/ST2-SG on (short)
The forward rotation start signal (ST1) and reverse rotation start signal (ST2) can be assigned to
any pins of the connector CN1A, CN1B using parameters No. 43 to 48.
Generally, make connection as shown below:
Servo amplifier
2k
2k
Japan resistor
RRS10 or equivalent
3 - 28
ST1
ST2
SG
P15R
VC
LG
SD