Yaskawa Sigma II Indexer - Manual (Page 91)

Sigma II Indexer User’s Manual Absolute Encoders
5-36
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 func-
tion is called the multi-turn limit.
Note: The term Multi-turn Limit refers to the highest number of rotations the encoder’s counter will display
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 change 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-turn limit
setting operation (Fn013 or serial command MLTLIMSET).
This operation can be executed using the hand-held digital operator, the servo ampli-
fier panel operator (Fn013), or by serial command (MLTLIMSET).
Note: The multi-turn limit setting is enabled only during the multi-turn limit value mismatch alarm. Cycle
the power after performing this operation.
1 Uses the absolute encoder as an incremental encoder.
Parameter Signal Setting Default
Pn205 Multi-turn Limit Setting Setting Range: 0 to 65535 65535
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.
Connect the ground terminal to a class–3 ground (100 : or less).
Improper grounding may result in electric shock or fire.
Pn002.2 Setting Result
WARNING