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17. APPLICATION OF FUNCTIONS
(a) How to set the parameter
1) Selecting an encoder pulse count polarity
This parameter is used to set the polarity of the load-side encoder to be connected to the CN2L
connector in order to match the CCW direction of the servo motor and the increasing direction of
the load-side encoder feedback. Set this as necessary.
2) A/B/Z-phase input interface encoder Z-phase connection judgement function
This function can trigger an alarm by detecting non-signal for Z phase.
The Z-phase connection judgement function is enabled by default. To disable the Z-phase
connection judgement function, set [Pr. PC27].
(b) How to check the scale measurement encoder feedback direction
You can check that the directions of the cumulative feedback pulses of the servo motor encoder and
the load-side cumulative feedback pulses match by manually moving the device (scale
measurement encoder) in the servo-off status. If mismatched, reverse the polarity.
(3) Checking scale measurement encoder position data
Check the scale measurement encoder mounting and parameter settings for any problems.
Operate the device (scale measurement encoder) to check that the data of the scale measurement
encoder is renewed correctly. If the data is not renewed correctly, check the scale measurement
encoder mounting, wiring, and parameter settings. Change the scale polarity as necessary.
[Pr. PC27]
0 0 0
Encoder pulse count polarity selection
0: Load-side encoder pulse increasing direction in the servo motor CCW
1: Load-side encoder pulse decreasing direction in the servo motor CCW
Servo motor
Linear encoder
[Pr. PC27]
0
0
0
Selection of A/B/Z-phase input interface encoder Z-phase connection judgement function
0: Enabled
1: Disabled
17 - 6
Servo motor CCW direction
Address increasing direction of linear encoder
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