NSK MEGATORQUE M-ESA-Y2005V25 - FD: Feed Back Direction Mode; FF: Feed Forward Gain; FO: Low-Pass Filter off Velocity

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« FD : Feed Back Direction Mode
Format : FD data
Data : 0, 1
Shipping set : 0
Default : 0
l Reverses the output timing between øA and øB of the position feedback signal.
FD0 : Standard; øA is leading phase in CW direction.
FD1 : Reverse; øB is leading phase in CW direction.
l “TS” or “?FD” command reports the current setting.
« FF : Feed Forward Gain
Format : FF data
Data : 0.0000 ~ 1.0000
Shipping set : 0
Default : 0
l FF sets the feed forward compensation gain.
l Setting 0 cancels the feed forward compensation function.
l “TS” or “?FF” command reports the current setting.
FO : Low-pass Filter OFF Velocity
Format : FO data
Data
Motor series
YS, JS1, JS2, RS : 0, 0.01 ~ 3.00 [s
-1
]
SS : 0, 0.01 ~ 3.75 [s
-1
]
AS, BS, JS0 : 0, 0.01 ~ 4.50 [s
-1
]
Shipping set : 0
Default : 0
l Sets the low pass filters (parameter FP and FS), depending upon velocity.
l FO data sets the velocity threshold which turns ON and OFF the low pass filters.
Filter ON
FO data
Filter OFF
Time
Velocity
l When this function is set, it is possible to lower the resonance noise level without affecting on the
settling time.
l When “FO” is set to 0, the function is invalid. (The low-pass filters are always active.)
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