8-36
8-4 Analog Control Parameters
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
8
Parameter Details
Explanation of Set Values
Set to enable or disable phase-Z disconnection detection when a 90° phase difference output type
external encoder is used.
Explanation of Set Values
Set the allowable difference (feedback pulse error) between the motor (encoder) position and load
(external encoder) position in command units.
The feedback pulse error is reset every time the motor rotates for the amount set by the Internal/
External Feedback Pulse Error Counter Reset (Pn329). This can be used for applications where
feedback pulse error accumulates due to slippage.
When using feedback pulse error reset, make sure the feedback pulse error reset setting is set to
a proper value. When the set value is extremely small, the protective function may not work to
prevent any erroneous operation due to improper connection of the external encoder.
Take sufficient care to ensure safety.
Set
value
Description
0 External encoder feedback pulse count direction not reversed
1 External encoder feedback pulse count direction reversed
Pn327
External Feedback Pulse Phase-Z Setting
Setting
range
0 or 1 Unit −
Default
setting
0
Power OFF
and ON
Yes
Fully-closed
Set
value
Description
0 Phase-Z disconnection detection enabled
1 Phase-Z disconnection detection disabled
Pn328
Internal/External Feedback Pulse Error Counter Overflow Level
Setting
range
1 to 2
27
Unit Command unit
Default
setting
16000
Power OFF
and ON
Yes
Fully-closed
Pn329
Internal/External Feedback Pulse Error Counter Reset
Setting
range
0 to 100 Unit Rotation
Default
setting
0
Power OFF
and ON
Yes
Fully-closed
Feedback pulse
error value [command units]
(absolute value)
Excessive
feedback pulse
error setting
Occurrence of excessive
feedback pulse
deviation error
Motor rotation
speed [rotations]
Feedback pulse error reset setting
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