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Operation selection functions 1 (Pr. 17 to Pr. 37)
PARAMETERS
3
3.5.6 Speed jump (Pr. 31 to Pr. 36 )
<Setting>
3.5.7 Speed display (Pr. 37, Pr. 144, Pr. 505 )
When it is desired to avoid resonance attributable
to the natural frequency of a mechanical system,
these parameters allow resonance occurrence
speeds to be jumped. Up to three areas may be
set, with the jump speeds set to either the top or
bottom point of each area.
The value set to 1A, 2A or 3A is a jump point and
operation is performed at this speed.
Parameter Name
Factory
Setting
Setting Range Remarks
31 Speed jump 1A 9999 0 to 3600r/min, 9999
• 9999: Function invalid
• Extended mode
32 Speed jump 1B 9999 0 to 3600r/min, 9999
33 Speed jump 2A 9999 0 to 3600r/min, 9999
34 Speed jump 2B 9999 0 to 3600r/min, 9999
35 Speed jump 3A 9999 0 to 3600r/min, 9999
36 Speed jump 3B 9999 0 to 3600r/min, 9999
• To fix the speed at 600r/min between Pr. 33 and Pr. 34 (600r/min
and 700r/min), set 600r/min in Pr. 33 and 700r/min in Pr. 34.
• To jump to 700r/min between 600r/min and 700r/min, set 700r/
min in Pr. 33 and 600r/min in Pr. 34.
CAUTION
During acceleration/deceleration, the running speed within the set area is valid.
REMARKS
If the speed jump setting ranges overlap, a write disable error " " appears.
The units of the running speed monitor display of the PU (FR-DU04-1/FR-PU04V), the running speed/
frequency setting in the PU operation mode, and the parameter setting unit used for frequency setting can be
changed from the frequency to the motor speed or machine speed.
Parameter Name
Factory
Setting
Setting Range Remarks
37 Speed display 0
0 Output speed
Extended mode
1 to 9998
Machine speed at the
Pr. 505 set speed
operation
144
Speed setting
switchover
0 0, 2, 4, 6, 8, 10 Number of motor poles
505
Speed setting
reference
1500r/min 1 to 3600r/min
Reference speed for
Pr. 37
speed torque
Pr.36
Pr.35
Pr.34
Pr.33
Pr.32
Pr.31
R
unning
speed
(r/min)
Speed jump
3B
3A
2B
2A
1B
1A
Set speed
Pr.34:700r/min
Pr.33:600r/min
Pr.33:700r/min
Pr.34:600r/min
speed torque position