Yaskawa Sigma II Series Servo System - Manual (Page 185)

Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
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5.7.2 Configuring an Absolute Encoder
Select the absolute encoder’s application with the following parameter.
Either “0” or “1” in the following table must be set in order to enable the absolute
encoder.
The following parameter is used to periodically clear the encoder’s counter (return
the setting to 0) after a designated ratio of motor to load axis revolutions. This
function is called the multi-turn limit.
Note: The term Multi-turn Limit refers to the highest number of rotations the encoder’s counter will dis-
play before returning the counter to 0.
• When Pn205 is set to the default (65535), multi-turn data varies in the range of
−32768 to +32767.
• With any other Pn205 value entered, data varies from 0 to the set value.
Note: To activate reassignment of this value, the user must first enter the change to the parameter, and then
cycle (turn OFF and then turn ON) the power.
Since the encoder’s multi-turn limit value is set as default to 65535, the following
alarm occurs if the servo amplifier’s power supply is cycled (turned OFF and ON)
after changing parameter Pn205:
Note: O: ON (“L”) signal
X: OFF (“H”) signal
In order to set a multi-turn limit value to the encoder, perform the multi-term limit
setting operation (Fn-013).
Parameter Signal Setting Description
Pn002.2 Absolute Encoder Application
Setting Range: 0 or 1
Default Setting: 0
Speed/Torque Control,
Position Control
Pn002.2 Setting Result
0 Uses the absolute encoder as an absolute encoder.
1 Uses the absolute encoder as an incremental encoder.
Parameter Signal Setting Description
Pn205 Multi-turn Limit Setting
Setting Range: 0 to 65535
Default Setting: 65535
Speed/Torque Control,
Position Control
Alarm Display
Alarm Code Output
Description
ALO1 ALO2 ALO3
A.CC O X O
Encoder multi-turn limit value does not
match with that of the servo amplifier.