Yaskawa SGDH Linear Sigma Series User Manual download pdf (Page 288)

100

101

9 Operation

9.7.7 Encoder Signal Output

9-44

Relation between Linear Scale by Renishaw and Encoder Output Signals from the SERVO-

PACK

For some models of the Renishaw linear scales, the position at which the zero-point signal (Ref) is output

varies in accordance with the direction of movement.

If combining the SERVOPACK with one of those models, phase C pulses are output from the SERVOPACK

in two places.

For more details of the linear scale zero-point signals, refer to the instruction manual for the linear scale

being used.

•

When passing the first zero-point signal (Ref) forward after the power supply is turned ON

•

When passing the first zero-point signal (Ref) in reverse after the power supply is turned ON

IMPORTANT

Machine position (Forward)

Power ON

Zero-point

signal (Ref)

Phase C

Time

The linear scale does not output a zero-point signal (Ref).

When moving forward this position, however, is where phase C

is output from the SERVOPACK. Phase C is output even when

moving in reverse.

The width of the second

pulse is half of phase A.

Machine position (Forward)

Power ON

Zero-point

signal (Ref)

Phase C

Time

The linear scale does not output a zero-point signal (Ref).

When moving in reverse this position, however, is where phase C

is output from the SERVOPACK. Phase C is output even when

moving forward.

The width of the second

pulse is half of phase A.

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