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6.5 Speed Control
6.5.6 Operation Examples for Changing the Motor Direction
6-28
6.5.6
Operation Examples for Changing the Motor Direction
This section describes examples of using the /SPD-D (Motor Direction Input) signal in combina-
tion with zero clamping and internal set speed control.
Operation Example for Changing the Motor Direction and
Zero Clamping
This section provides an example of changing the motor direction without changing the polarity
of the speed reference voltage by using the /SPD-D (Motor Direction Input) signal.
*
Pn501 (Zero Clamping Level): Used with a Rotary Servomotor.
Pn580 (Zero Clamping Level): Used with a Linear Servomotor.
Note: The soft start function is used for the acceleration/deceleration time of the speed reference.
/ZCLAMP
/SPD-D
Polarity of Analog Speed Reference Voltage
Positive
Zero Clamping Level
or Lower ((Pn501
(Pn580))
*
Negative
Rotation Direction
Operating Status
Rotation Direction
OFF
OFF
CCW
Speed Control
CW
OFF
ON
CW
Speed Control
CCW
ON
OFF
CCW
Servo lock
(clamped to zero)
CW
ON
ON
CW
Servo lock
(clamped to zero)
CCW
Relea
s
ed
OFF
Applied
Applied
ON
Applied
OFF
ON
OFF
ON
Pn501
(Pn580)
Relea
s
ed
Relea
s
ed
Zero clamping
/ZCLAMP input
s
ignal
/
S
PD-D input
s
ignal
S
peed reference
input voltage
Reference voltage
Motor
s
peed
S
ERVOPACK internal
s
peed reference
Pn501
(Pn580)