NSK EDD Megatorque Motor - Home Return Start: HOS; Home Position Limit: HLS

8. More Advanced Function
— 8-15 —
8.2.4. Home Return Start: HOS
 Starts a Home Return operation.
Table 8-12: Signal logic of the input HOS
Logic
Description
↓ (ON → OFF)
Not effective
↑ (OFF → ON)
Starts operation
 Starts the Home Return operation specified by the parameter OS (Origin setting mode).
 Confirm that all of the following conditions are met before starting the Home Return operation.
1) Other internal command, such as positioning, jogging and Home Return, is not established.
 Confirm that the output BUSY (In-operation) is open.
2) The Motor servo is active.
 Confirm that the output SVST (Servo on) is closed.
3) No alarm or warning is reported and the input STP (Stop) is OFF.
 Warning A5 (Origin undefined) occurs if you execute an absolute positioning operation after you abort the
Home Return operation.
 Complete the Home Return operation, and thus define the Home position of the scale system.
 Refer to “8.8. Home Return” for the procedures of the Home Return operation.
8.2.5. Home Position Limit: HLS
 When performing Home Return operation, this input monitors that the Motor is nearing the proximity of
the Home position.
Table 8-13: Signal logic of the input HLS
Logic
Description
OFF
Normal
ON
Home position proximity
 When the parameter OS (Home Return mode) is set to OS1, OS3, OS4 and OS5, the System performs
Home Return operation and Home position setting according to the input HLS.
 Refer to “8.8.1. Home Return Operation via the Home Position Sensor” for the procedure of Home Return.
 Refer to “8.8.4. Position Adjustment of Home Limit Sensor” for setting the position of Home limit sensor.