YASKAWA SGMAH, User Manual

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Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5-98
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.