Operation Examples For Changing The Motor Direction - YASKAWA SGD7S series Product Manual

6.5 Speed Control

6.5.6 Operation Examples for Changing the Motor Direction

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.
/ZCLAMP
OFF
OFF
ON
ON
*
Pn501 (Zero Clamping Level): Used with a Rotary Servomotor.
Pn580 (Zero Clamping Level): Used with a Linear Servomotor.
Reference voltage
peed reference
input voltage
/ PD-D input ignal
ERVOPACK internal
peed reference
/ZCLAMP input ignal
Zero clamping
Note: The soft start function is used for the acceleration/deceleration time of the speed reference.
6-28
/SPD-D
OFF
ON
OFF
ON
OFF
Motor peed
Polarity of Analog Speed Reference Voltage
Positive
Rotation Direction
CCW
CW
CCW
CW
ON
OFF
Relea ed Appl i e d
Zero Clamping Level
or Lower ((Pn501
(Pn580))*
Operating Status Rotation Direction
Speed Control
Speed Control
Servo lock
(clamped to zero)
Servo lock
(clamped to zero)
OFF
ON
Relea ed Applied Relea ed
Negative
CW
CCW
CW
CCW
Pn501
(Pn580)
ON
Pn501
(Pn580)
Applied