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15. MR-E- AG-QW003 SERVO AMPLIFIER COMPATIBLE WITH ANALOG INPUT
15.2.5 Detailed description of the signals
(1) Speed control mode
(a) Speed setting
1) 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.
In the initial setting, rated speed is
10V. The speed at 10V can be changed using parameter
No.25.
Preset rotation speed
(Value for parameter No.25)
Preset rotation speed
(Value for parameter No.25) [r/min]
10
010
Speed [r/min]
CW direction
VC applied voltage [V]
CCW direction
Forward rotation (CCW)
Reverse rotation (CW)
The following table indicates the rotation direction according to forward rotation start (ST1) and
reverse rotation start (ST2) combination.
(Note 1) External input signals (Note 2) Rotation direction
Analog speed command (VC)
ST2 ST1
Polarity 0V Polarity
Internal speed
commands
0 0
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
0 1 CCW CW CCW
1 0 CW
Stop
(No servo lock)
CCW CW
1 1
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
Stop
(Servo lock)
Note 1. 0: off
1: on
2. Releasing the torque limit during servo lock may cause the servo motor to suddenly rotate according to the position
deviation from the instructed position.
The forward rotation start (ST1) and reverse rotation start (ST2) can be assigned to any pins of the
connector CN1 using parameters No.43 to 48.
Generally, make connection as shown below.
10 to 10V
Servo amplifier
ST1
ST2
VIN
VC
LG
SD
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