3.2 Operating Procedures for Utility Functions
3.2.30 One-Parameter Tuning (Fn203)
3-90
10
If readjustment is required, input a
reference from the host controller,
select the digit with the
Key
or
Key, change the FF level
and FB level with the
Key or
Key, and check the response.
If readjustment is not required, go
to step 11.
Note: 1. If the FF level is changed when
the Servomotor is in operation,
the new FF level will not be
used immediately. The changes
will take effect after the Servo-
motor comes to a stop with no
reference input and then the
Servomotor starts operation.
2. If the FF level is changed too
much during operation, vibra-
tion may occur because the
response would be changed
rapidly when the settings take
effect.
3. The
FF LEVEL
will flash until
the machine reaches the setting
of the FF level. If the Servomo-
tor does not stop within
approximately 10 seconds after
changing the setting, a timeout
will occur. The setting will be
automatically returned to the
previous value.
4. The higher the value of the FF
level, the shorter the positioning
time will be and the better the
response will be. If the level is
too high, however, overshoot-
ing or vibration may occur.
Overshooting will be reduced if
the setting of the FB level is
increased.
Note: If vibration occurs and the vibra-
tion is large enough, the SERVO-
PACK will automatically detect the
vibration frequencies and set a
notch filter or anti-resonance con-
trol. If notch filters are set,
NF1
and
NF2
will be displayed on the
bottom row of the display. If anti-
resonance control is set,
ARES
will
be displayed on the bottom row of
the display.
If the vibration is small, press the
Key to force a search for
the vibration frequency.
11
Press the
Key.
A confirmation display for after tun-
ing will appear.
Continued on next page.
Continued from previous page.
Step
Operation
Result
1 : R U N O n e P r m T u n
F F L E V E L = 0 0 5 0 . 0
F B L E V E L = 0 0 4 0 . 0
1 : R U N O n e P r m T u n
F F L E V E L = 0 0 5 0 . 0
F B L E V E L = 0 0 4 0 . 0
N F 1 N F 2 A R E
S
1 : R U N O n e P r m T u n
P n 1 0 0 = 0 0 4 0 . 0
P n 1 0 1 = 0 0 2 0 . 0 0
P n 1 4 1 = 0 0 5 0 . 0
N F 1
