Operation Avoiding Resonance (Jump Frequency Function) - Omron SYSDRIVE 3G3RV Series User Manual

For example, if H3-02 is 100%, H3-03 is 0%, and terminal A2 is set to 1 V, the frequency reference from
terminal A1 when 0 V is input to A1 will be 10%.
K K K K

Operation Avoiding Resonance (Jump Frequency Function)

The jump frequency function operates the motor while avoiding resonance caused by characteristic frequen-
cies in the machinery.
This function is effective in creating a frequency reference dead band.
During constant-speed operation, operation within the jump frequency range is prohibited. Smooth operation
still used during acceleration and deceleration, i.e., jumps are not performed.
nRelated Parameters
Name
Param-
eter
Num-
LCD Display
ber
Jump frequency 1
d3-01
Jump Freq 1
Jump frequency 2
d3-02
Jump Freq 2
Jump frequency 3
d3-03
Jump Freq 3
Jump frequency width
d3-04
Jump Bandwidth
Frequency bias
Fig 6.29 Frequency Bias Adjustment (Terminal A2 Input)
Frequency reference
10%
Bias
0 V
Description
Set the frequency center value at which to prohibit
settings, in hertz.
Set to 0.0 to disable the jump frequency.
Make sure the settings are as follows: d3-01 ≥ d3-
02 ≥ d3-03.
Operation within the jump frequency range is pro-
hibited. Changes during acceleration and decelera-
tion are made gradually without performing
jumps.
Set the jump frequency width in hertz.
The jump frequency range is as follows: (Jump
frequency ±d3-04).
Adjusting Frequency References
Multi-function analog input
terminal A2 input level
H3-02
Terminal A1 input voltage
10 V
Change
Setting Factory during
Range Setting Opera-
tion
0.0 Hz No
0.0 to
0.0 Hz No
400.0
0.0 Hz No
0.0 to
1.0 Hz No
20.0
Control Methods
Open
V/f
Loop
V/f with
Vec-
PG
tor
A A A
A A A
A A A
A A A
29
6-