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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.
10
010
Rated speed [r/min]
Speed [r/min]
CW direction VC applied voltage [V]
CCW direction
Rated speed
Forward rotation (CCW)
Reverse rotation (CW)
The following table indicates the rotation direction accordin g to forward rot ation start (ST1) and
reverse rotation start (ST2) combination:
(Note) External input signals Rotat ion direction
Analog speed command (VC)
ST2 ST1 Polarity 0V Polarity
Internal speed
commands
00 Stop
(Servo lock) Stop
(Servo lock) Stop
(Servo lock) Stop
(Servo lock)
0 1 CCW CW CCW
10 CW
Stop
(No servo lock) CCW CW
11 Stop
(Servo lock) Stop
(Servo lock) Stop
(Servo lock) Stop
(Servo lock)
Note.0: ST1/ST2-SG off (open)
1: ST1/ST2-SG on (short)
Generally, make connection as shown below:
SP1
SP2
SG
P15R
VC
LG
SD
2k
2k
Servo amplifier
Japan resistor
RRS10 or equivalent