Mitsubishi Electric MELSERVO-J5 User Manual page 223
Ac servo system
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Also See for MELSERVO-J5:
- User manual (478 pages) ,
- Sample screen manual (128 pages) ,
- Introduction manual (112 pages)
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Selecting a polarity of the scale measurement encoder
Select the polarity of the scale measurement encoder in [Pr. PC27.0 Encoder pulse count polarity selection] and set [Pr.
PC27.2 ABZ phase input interface encoder ABZ phase connection assessment function selection] shown below as required.
Precautions
[Pr. PC27.0 Encoder pulse count polarity selection] is not related to [Pr. PA14 Travel direction selection]. Set the parameter
according to the relationships between the servo motor, linear encoder, and rotary encoder.
■Selection of the encoder pulse count polarity
This servo parameter is used to set the polarity of the load-side encoder to be connected to CN2L or CN2AL to match the
CCW direction of the servo motor and the increasing direction of the load-side encoder feedback. For [Pr. PC27.0 Encoder
pulse count polarity selection], select "0" (Encoder pulse increasing direction in the servo motor CCW or positive direction) or
"1" (Encoder pulse decreasing direction in the servo motor CCW or positive direction).
No.
Symbol
Name
PC27.0
**COP9
Encoder pulse count polarity selection
Servo motor
Linear encoder
■A/B/Z-phase input interface encoder Z-phase connection assessment function
This function triggers an alarm by detecting non-signal for Z phase.
The Z-phase connection assessment function is enabled in the initial state. The Z-phase connection assessment function can
be disabled with [Pr. PC27.2 ABZ phase input interface encoder ABZ phase connection assessment function selection].
Select "0" (enabled) or "1" (disabled) for [Pr. PC27.2] as needed.
No.
Symbol
Name
PC27.2
**COP9
ABZ phase input interface encoder
ABZ phase connection assessment
function selection
■Resolution setting of scale measurement encoder
When using an A/B/Z-phase differential output rotary encoder as a scale measurement encoder, set the resolution in [Pr.
PE51 Load-side encoder resolution setting].
No.
Symbol
Name
PE51
**EDV2
Load-side encoder resolution setting
■Selection of use of A/B/Z-phase differential output type encoder as scale measurement
encoder [G]
If a serial encoder is connected to CN2 and an A/B/Z-phase differential output type encoder is connected to CN2L or CN2AL,
determine which encoder is to be used as a scale measurement encoder. Use [Pr. PC27.5 Scale measurement encoder
selection] to select whether the A/B/Z-phase differential output type encoder is to be used as a servo motor encoder or scale
measurement encoder as required.
No.
Symbol
Name
PC27.5
**COP9
Scale measurement encoder selection
Outline
Select a polarity of the load-side encoder.
Initial setting: 0 (Encoder pulse increasing direction in the servo motor CCW or positive
direction)
Servo motor in CCW direction
Address increasing direction of linear encoder
Outline
Select the non-signal detection status for the pulse train signal from the A/B/Z-phase input
interface encoder.
Initial setting: 0 (enabled)
Outline
Set the resolution of the load-side encoder.
Initial value: 0 [pulse]
Outline
Select a scale measurement encoder when using an A/B/Z-phase differential output type
encoder.
0: Use an A/B/Z-phase differential output type encoder as a scale measurement encoder
(Initial value)
1: Use a serial encoder as a scale measurement encoder
4 APPLICABLE FUNCTIONS
4.3 Scale measurement function [G] [B]
4
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