Adjusting Frequency References
6-31
Adjusting Frequency Reference Using Pulse Train Inputs
The frequency reference can be adjusted when b1-01 (Reference Selection) is set to 4 (Pulse Train Input). Set
the pulse frequency in constant H6-02 to 100% reference, and then adjust the gain and bias accordingly using
H6-03 and H6-04.
Related Constants
The following diagram shows the method for adjusting the frequency reference using pulse inputs.
Fig 6.29 Frequency Reference Adjustments Using Pulse Train Inputs
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
H6-01
Pulse train
input func-
tion selection
0: Frequency reference
1: PID feedback value
2: PID target value
0 to 2 0 NoAAAAA
Pulse Input
Sel
H6-02
Pulse train
input scaling
Set the number of pulses in hertz,
taking the reference to be 100%.
1000 to
32000
1440 Hz Yes A A A A A
PI 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 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 A A
Pulse Input
Bias
H6-05
Pulse train
input filter
time
Set the pulse train input primary
delay filter time constant in sec-
onds.
0.00 to
2.00
0.10
s
YesAAAAA
PI Filter Time
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
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