Absolute Linear Encoders; Connecting An Absolute Linear Encoder - YASKAWA SGD7S Product Manual

6.9

Absolute Linear Encoders

The absolute linear encoder records the current position of the stop position even when the power
supply is OFF.
With a system that uses an absolute linear encoder, the host controller can monitor the current
position. Therefore, it is not necessary to perform an origin return operation when the power supply to
the system is turned ON.
There are three types of linear encoders for Linear Servomotors. The usage of the linear encoder is
specified in Pn002 = n.
Refer to the following section for linear encoder models.

Feedback Resolution of Linear Encoder on page 5-43
•
Parameter Settings When Using an Incremental Linear Encoder
Parameter
 
n. 0
(default setting)
Pn002

n.
1
•
Parameter Settings When Using an Absolute Linear Encoder
Parameter
 
n. 0
(default setting)
Pn002

n. 1
6.9.1

Connecting an Absolute Linear Encoder

If you use an absolute linear encoder, the encoder divided pulse output signals (PAO, PBO, and PCO)
are output only once when the power supply turns ON. Normally, do not use these signals. Therefore,
it is not necessary to wire the PAO, PBO, and PCO (Encoder Divided Pulse Output) signals. If they
need to be wired, refer to the following section.
4.4.3 Wiring the SERVOPACK to the Encoder
4.5.3 I/O Signal Wiring Examples
 
X .
Use the encoder as an incremental linear encoder.

Use the encoder as an incremental linear encoder.
Use the encoder as an absolute linear encoder.

Use the encoder as an incremental linear encoder.
on page 4-26
on page 4-34

6.9.1 Connecting an Absolute Linear Encoder

Meaning
Meaning

6.9 Absolute Linear Encoders

When Enabled Classification
After restart Setup
When Enabled Classification
After restart Setup
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