Omron SYSDRIVE 3G3RV, Руководство пользователя

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Adjusting Frequency References
6-
31
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Related Parameters
The
following diagram shows the method for adjusting the frequency reference using pulse inputs.
Fig 6.32 Frequency Reference Adjustments Using Pulse Train Inputs
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Setting example
This
example results in an output frequency of 30 Hz when a 2-kHz pulse is input (maximum frequency: 60
Hz).
2000
Hz: 30 Hz = Set value: 60 Hz
Set
value = 2000 x 60/30 = 4000 Hz (4 kHz)
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Setting precautions
The
pulse train inputs of the Inverter do not control positioning as they do for servomotors and stepper motors.
Speed
control is thus absolutely necessary. Make adjustments with the following procedure.
1. First,
adjust the pulse train input bias setting.
Adjust
the output with respect to the pulse input near the minimum output frequency.
2. Next,
adjust the pulse train input gain setting.
Adjust
the output with respect to the pulse input near the maximum output frequency.
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
H6-01
Pulse
train input function
selection
0:
Frequency reference
1:
PID feedback value
2:
PID target value
0
to 2
0 No A A A
Pulse
Input Sel
H6-02
Pulse
train input scaling
Set
the number of pulses in Hz, taking the refer-
ence
to be 100%.
1000
to
32000
1440
Hz
Yes A A A
Pulse
In Scaling
H6-03
Pulse
train input gain
Set
the input gain level as a percent when the pulse
train
set in H6-02 is input.
0.0
to
1000.0
100.0% Yes A A A
Pulse
Input Gain
H6-04
Pulse
train input bias
Set
the input bias when the pulse train is 0.
-100.0
to
100.0
0.0% Yes A A A
Pulse
Input Bias
H6-05
Pulse
train input filter time
Set
the pulse train input primary delay filter time
constant
in seconds.
0.00
to
2.00
0.10
s
Yes A A A
Pulse
In Filter
RP
Cycle
measurement
Filter
H6-05
H6-01
Master speed
frequency
PID feedback
PID target value
=0
=2
=1
Scaling using H6-02
Gain and bias
Pulse
1
1+sT
0
H6-04
H6-03
100