Speed Control Mode - Mitsubishi Electric Melservo-J2-JR SERIES Instruction Manual

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:
Speed [r/min]
CW direction
The following table indicates the rotation direction according to forward rotation start (ST1) and
reverse rotation start (ST2) combination:
(Note) External Input Signals
ST2 ST1
0 0
0 1
1 0
1 1
Note. 0 : ST1/ST2-SG off (open)
1 : ST1/ST2-SG on (short)
Generally, make connection as shown below:
Rated speed [r/min]
CCW direction
10
0 10
VC applied voltage [V]
Rated speed
Analog Speed Command (VC)
+ Polarity
Stop
(Servo lock)
CCW
CW
Stop
(Servo lock)
2k
Japan Resistor
RRS10 or equivalent
Forward rotation (CCW)
Rotation Direction
0V
Stop
(Servo lock)
Stop
(No servo lock)
Stop
(Servo lock)
Servo amplifier
SP1
SP2
SG
P15R
1k
VC
LG
SD
3 - 24
Reverse rotation (CW)
Internal Speed
Commands
Polarity
Stop
(Servo lock) (Servo lock)
CW
CCW
Stop
(Servo lock) (Servo lock)
Stop
CCW
CW
Stop