Omron SYSDRIVE 3G3RV Series User Manual page 247

nRelated Parameters
Name
Param-
eter
Num-
LCD Display
ber
Pulse train input function
selection
H6-01
Pulse Input Sel
Pulse train input scaling
H6-02
Pulse In Scaling
Pulse train input gain
H6-03
Pulse Input Gain
Pulse train input bias
H6-04
Pulse Input Bias
Pulse train input filter time
H6-05
Pulse In Filter
The following diagram shows the method for adjusting the frequency reference using pulse inputs.
RP
Cycle
measurement
Pulse
Fig 6.32 Frequency Reference Adjustments Using Pulse Train Inputs
nSetting 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)
nSetting 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.
Description
0: Frequency reference
1: PID feedback value
2: PID target value
Set the number of pulses in Hz, taking the refer-
ence to be 100%.
Set the input gain level as a percent when the pulse
train set in H6-02 is input.
Set the input bias when the pulse train is 0.
Set the pulse train input primary delay filter time
constant in seconds.
Gain and bias
Filter
H6-03
1
1+sT
H6-04
0
H6-05
Scaling using H6-02
Adjusting Frequency References
Change
Setting Factory during
Range Setting Opera-
tion
0 to 2 0 No
1000 to
1440 Hz Yes
32000
0.0 to
100.0% Yes
1000.0
-100.0 to
0.0% Yes
100.0
0.00 to 0.10
Yes
2.00 s
=0
=1
100
=2
H6-01
Control Methods
Open
V/f
Loop
V/f with
Vec-
PG
tor
A A A
A A A
A A A
A A A
A A A
Master speed
frequency
PID feedback
PID target value
31
6-