Mitsubishi FREQROL-SFJ - 3.7 Adjustment of motor speed

Note:
k, is either negative value or positive value, buz
not displayed with sign (+ or -).
When value can be incremented by pressing w bu:t:r.,
the value is negative (for ROM version AO).
(2) Set speed reference signal to the forward run maximum
speed and record the motor speed displayed by the 7-seg-
ment LED readout of controller (record the speed as N:r
(rpm)>.
If this NZK is not equal to the desired speed Nzr , set
kz
, determined from the following formula, for parameter
No. OD I=].
kz = (Current
setting) x K
(3) When the adjustment has been completed for forward run,
speed in reverse run should have been adjusted automati-
cally.
It is,
however,
recommended to verify that
specified reference speeds
are always equal to true motor
speeds.
Ex.:
Let the rated motor speed
be 8000rpm with 1OV speed re-
ference signal,
and the reduction ratio be 2 : 1 (motor
speed
: spindle speed)
. . . . . .
N *r = 200 . . . .
Motor speed should be 200rpm with spindle
N
lr =
speed command of SlOO
188 . . . . Reading of 7-segment LED readout w
spindle speed command of SlOO.
,ith
188-200
*
. . k,=
X 2048
+ - 3
8000
Set
-3 for parameter
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