Mitsubishi Electric Freqrol-A100 Instruction Manual page 91

Pr. 22
-
Pr. 23
Calculation expression for current limit operation level
Current limit operation
level
(%)=
A + B x
Pr.22
-
A Pr.23
-
100
,
(Pr.22
-
B ) x ( 100
)
-
where,
A =
Pr.66(Hz) X Pr.22
(%)
Pr.66(Hz)
x
Pr22(%
0-utput frequency (Hz)
.
.
) [
120(Hz)
))
When "0" is set in Pr. 22, the stall prevention operation is not performed.
When !'9999" is set in Pr. 22, the stall prevention level can be
changed by terminal No. 1. A specific method is given below.
(The fast-response current limit level remains unchanged.)
A
Do not set the stall prevention operation level too small.
If set so,torque generated will reduce.
A
Test run must be performed.
During acceleration, the stall prevention may be acti-
vated to increase acceleration time.
During constant speed, the stall prevention may be acti-
vated to vary speed suddenly.
During deceleration, the stall prevention may be acti-
vated to increase deceleration time, increasing decelera-
tion distance.
Setting method
Set "9999" in Pr. 22 "stall prevention operation level".
Stall prevention operation
level signal
Functions
Enter 0-5V (or 0-1 0V) into terminal 1.
(Setting "99'99" in P ; . 22 automatically switches the function of
the auxiliary input terminal to a stall prevention operation level
signal input.)
Fast-response current llrnlt level
0 )
I
Remarks
9999: Analog
m ~ u t
0. None
1: 135%
(Elas)
-
149 (Note)
..
.
Input voltage (V)
Mlnlmum
Increment
o, l %
1
0.1%
Settlng
Ranqe
0 to 150%.
9999
0,
1
to
150%
Pr. No.
22
2 2 (Note)
148 (Note)
Current I~mit level at the tnput
voltage of 10Vl5V
Factory
Settlna
1
120%
Descrlptlon
Stall prevention level
F ~ r s t response current l m t
level
Current l m t level at the tnput
voltaae of O V
0 to 150% 0.1%
150% (Gain)