Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 526 / 1218

(H) Protective function parameter Parameters
5 - 324
6-point frequency jump (Pr. 552)
●
A total of six jump areas can be set by setting the common jump range for the frequencies set in
Pr. 31 to Pr. 36.
●
When frequency jump ranges overlap, the lower limit of the lower jump range and the upper limit
of the upper jump range are used.
●
When the set frequency decreases and falls within the jump range, the upper limit of the jump
range is the set frequency. When the set frequency increases and falls within the jump range, the
lower limit of the jump range is the set frequency.
I002594E, I002595E
Fig. 5-138: 6-point frequency jump
NOTES During acceleration/deceleration, the running frequency within the set area is valid.
If the setting ranges of individual groups (1A and 1B, 2A and 2B, 3A and 3B) overlap, write disable
error (Er1) will occur.
Setting Pr. 552 = "0" disables frequency jumps.
If a jump frequency that exceeds Pr. 1 (Pr. 18) "Maximum frequency" is set for the 3-point jump, the
maximum frequency setting is the set frequency. If the set frequency is less than the jump fre-
quency Pr. 2 "Minimum frequency", the jump frequency is the set frequency. (The set frequency
can be equal to or lower than the frequency lower limit.)
Example with 6-point frequency jump
Parameters referred to
Pr. 1 Maximum frequency => page 5-321
Pr. 18 High speed maximum frequency => page 5-321
Pr. 2 Minimum frequency => page 5-321
0
0
S
e
t f
req
u
e
n
c
y
af
ter
f
re
q
u
e
n
c
y
jum
p
Pr. 36
Pr. 35
Pr. 33
Pr. 34
Pr. 32
Pr. 31
Jump range
Jump range
Input set frequency
Pr. 552
Pr. 552
Set frequency after
frequency jump
Input set frequency
Jump
range
Pr. 552
Pr. 552
Pr. 32
Pr. 31
0 0
Output frequency
Maximum
frequency
Pr. 552
Pr. 552
Set frequency
Maximum frequency and frequency jump
Maximum frequency and frequency jump
Output frequency
Pr. 552
Pr. 552
Set frequency
Minimum
frequency