Positioning Near Signal - YASKAWA SGDH User Manual

8.6.6 Positioning Near Signal

This signal indicates that the positioning of the servomotor is near to completion, and is generally used in combi-
nation with the positioning completed (/COIN) output signal.
The host controller receives the positioning near signal prior to confirming the positioning-completed signal, and
performs the following operating sequence after positioning has been completed to shorten the time required for
operation.
Type Signal
Name
Output /NEAR
The output terminal must be allocated with parameter Pn510 in order to use positioning near signal. Refer to 7.3.3 Output
Circuit Signal Allocation for details.
Pn504 NEAR Signal Width
Setting Range
The positioning near (/NEAR) signal is output when the differ-
ence (error) between the number of reference pulses output by
the host controller and the travel distance of the servomotor is
less than the value set in Pn504.
Set the number of error pulses in reference units (the number of
input pulses defined using the electronic gear.)
Normally, the setting should be larger than that for the position-
ing completed width (Pn500).
Connector Setting
Pin Number
Must be allocated ON (low level)
OFF (high level) The servomotor has not reached a point near to posi-
Setting Unit
1 to 250 Reference units
8-59
8.6 Operating Using Position Control
Meaning
The servomotor has reached a point near to positioning
completed.
tioning completed.
Factory Setting
7
Reference
Speed
Pn504
Error pulse
0
/NEAR
/COIN
Position
Setting Validation
Immediately
Motor speed
Pn500
8