Adjusting Frequency Reference Using Pulse Train Inputs - YASKAWA Varispeed G7 Series Instruction Manual



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
Name
Con-
stant
Display
Number
Pulse train
input function
H6-01
selection
Pulse Input Sel
Pulse train
input scaling
H6-02
PI 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
PI Filter Time
The following diagram shows the method for adjusting the frequency reference using pulse inputs.
RP
Cycle
measurement
Pulse
Fig 6.31 Frequency Reference Adjustments Using Pulse Train Inputs
Description
0: Frequency reference
1: PID feedback value
2: PID target value
Set the number of pulses in hertz,
taking the reference to be 100%.
Set the input gain level as a per-
cent 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 sec-
onds.
Gain and bias
Filter
H6-03
1
1+sT
H6-04
0
H6-05
Scaling using H6-02
Adjusting Frequency References
Control Methods
Change
Setting Factory during
V/f
Range Setting Opera-
V/f with
tion
PG
0 to 2 0 No A A
1000
1440
to Yes A A
Hz
32000
0.0 to 100.0
Yes A A
1000.0 %
-100.0
to 0.0% Yes A A
100.0
0.00 to 0.10
Yes A A
2.00 s
=0
100
=2
H6-01
MEMO
Open Open
BUS
Flux
Loop Loop
Regis-
Vec-
Vector Vector
ter
tor
1 2
A A A 42CH
A A A 42DH
A A A 42EH
A A A 42FH
A A A 430H
Master speed
frequency
=1
PID feedback
PID target value
33
6-