Using The Servo On Command (Enable Operation Command) To Perform Polarity Detection - YASKAWA SGD7S-1R9D Product Manual

5.9 Polarity Detection

5.9.2 Using the Servo ON Command (Enable Operation Command) to Perform Polarity Detection

• The parameters must not be write prohibited. (This item applies only when using the Sig-
maWin+ or Digital Operator.)
• The test without a motor function must be disabled (Pn00C = n.0).
• There must be no overtravel.
• If the motor parameters have been written or the origin of the absolute linear encoder has
been set, the power supply to the SERVOPACK must be turned OFF and ON again after
completion of the writing or setting operation.
Important
5.9.2 Using the Servo ON Command (Enable Operation
Command) to Perform Polarity Detection
You can use the Servo ON command (Enable Operation command) to perform polarity detec-
tion only with an incremental linear encoder.
Polarity detection will start simultaneously with execution of the Servo ON command (Enable
Operation command). As soon as polarity detection is completed, the /S-RDY will turn ON and
the servo will change to ON status (statusword = operation enabled).
/S-RDY
(Servo Ready) signal
Motor power status
5-24
1. Power is supplied to the Servomotor during polarity detection. Be careful not to get an electric
shock. Also, the Moving Coil of the Linear Servomotor may greatly move during detection. Do
not approach the moving parts of the Servomotor.
2. Polarity detection is affected by many factors.
For example, polarity detection may fail if the mass ratio or friction is too large or the cable ten-
sion is too strong.
Controlword Disable
Operation
(6040 hex)
Statusword
(6041 hex)
Power not supplied.
Enable
Operation
Switched
on
Completion of polarity detection
Polarity detection in progress
→ Normal operation is enabled.
→ Status display: P-dt
Power supplied.
Operation
Enabled