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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.
Rated speed is achieved at 10V with initial setting. The speed at 10V can be changed using
parameter No.25.
10
0
10
Rated speed [r/min]
Speed [r/min]
CW direction
VC applied voltage [V]
CCW direction
Rated speed [r/min]
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. 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.
The forward rotation start (ST1) and reverse rotation start (ST2) can be assigned to any pins of the
connector CN1A, CN1B using parameters No. 43 to 48.
Generally, make connection as shown below.
ST1
ST2
SG
P15R
VC
LG
SD
2k
2k
Servo amplifier
Japan resistor
RRS10 or equivalent
Summary of Contents for MR-J2S-*A
Page 13: ...WWW NNC IR A 12 MEMO ...
Page 117: ...WWW NNC IR 3 70 3 SIGNALS AND WIRING MEMO ...
Page 185: ...WWW NNC IR 7 12 7 GENERAL GAIN ADJUSTMENT MEMO ...
Page 195: ...WWW NNC IR 8 10 8 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 197: ...WWW NNC IR 9 2 9 INSPECTION MEMO ...
Page 221: ...WWW NNC IR 11 10 11 OUTLINE DIMENSION DRAWINGS MEMO ...
Page 293: ...WWW NNC IR 13 64 13 OPTIONS AND AUXILIARY EQUIPMENT MEMO ...
Page 321: ...WWW NNC IR 14 28 14 COMMUNICATION FUNCTIONS MEMO ...
Page 389: ...WWW NNC IR 15 68 15 ABSOLUTE POSITION DETECTION SYSTEM MEMO ...