Mitsubishi Electric MR-J2-03B5, Instruction Manual

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5 - 5
5. PARAMETERS
Classifi-
cation
No. Symbol Name and Function
Initial
Value
Unit
Setting
Range
14 VG1 Speed loop gain 1
Normally this parameter setting need not be changed. Higher setting
increases the response level but is liable to generate vibration and/or
noise.
When auto tuning is selected, the result of auto tuning is
automatically used. 873 rad/s 20
to
5000
15 PG2 Position loop gain 2
Used to set the gain of the position loop.
Set this parameter to increase position response to load disturbance.
Higher setting increases the response level but is liable to generate
vibration and/or noise.
When auto tuning is selected, the result of auto tuning is
automatically used. 97 rad/s 1
to
500
16 VG2 Speed loop gain 2
Set this parameter when vibration occurs on machines of low
rigidity or large backlash.
Higher setting increases the response level but is liable to generate
vibration and/or noise.
When auto tuning is selected, the result of auto tuning is
automatically used. 1144 rad/s 20
to
8000
17 VIC Speed integral compensation
Used to set the constant of integral compensation.
When auto tuning is selected, the result of auto tuning is
automatically used.
20 ms 1
to
1000
18 NCH Machine resonance suppression filter (Notch filter)
Used to select the frequency that matches the resonance frequency
of the mechanical system.
0
1
2
3
4
5
6
7
Setting
Machine Resonance
(Notch) Frequency [Hz]
Not used
1125
563
375
282
225
188
161
0 0 to 7
Adj
u
st
me
n
t pa
ra
me
te
rs
19 FFC Feed forward gain
Used to set the feed forward gain.
When it is set to 100%, droop pulses will be almost zeroed in constant-
speed operation. Note that sudden acceleration/deceleration will
increase overshoot. As a guideline, specify 1s or more as the
acceleration/deceleration time constant to the rated speed when you
set the feed forward gain to 100%. When setting this parameter,
always set auto tuning (parameter No. 8) to "No". 0 % 0
to
100