Omron SYSDRIVE 3G3RV, User Manual

Page: 245 / 446

Adjusting Frequency References
6-
29
Fig 6.29 Frequency Bias Adjustment (Terminal A2 Input)
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.
n
Related Parameters
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
LCD Display
d3-01
Jump
frequency 1
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.
0.0
to
400.0
0.0
Hz
No A A A
Jump
Freq 1
d3-02
Jump
frequency 2
0.0
Hz
No A A A
Jump
Freq 2
d3-03
Jump
frequency 3
0.0
Hz
No A A A
Jump
Freq 3
d3-04
Jump
frequency width
Set
the jump frequency width in hertz.
The
jump frequency range is as follows: (Jump
frequency
±d3-04).
0.0
to
20.0
1.0
Hz
No A A A
Jump
Bandwidth
Frequency bias
Multi-function analog input
terminal A2 input level
Terminal A1 input voltage
Frequency reference
H3-02
10%
Bias
0 V 10 V