Functions and Oper
ations
Section 5 Functions and Operations
5-12
■
F4: Rotational Difference
Measuring the Rpm/Circumferential Speed Difference (Absolute
Difference) between Two Conveyors
•
Basic Operation
The difference between the speed of input A and the speed of
input B is displayed.
The measurement value can be obtained using the following
formula:
D
=
fb
×
60
×
β
−
fa
×
60
×
α
fa
: Frequency A (Hz)
fb
: Frequency B (Hz)
α
: Prescale value A
β
: Prescale value B
D
: Measurement value
Example:
This example shows the prescale values and the prescale set
values for displaying the difference between speeds using two
rotary encoders, each of which outputs 60 pulses per rotation.
Prescale value of Input A (
α
) = 1/60 = 0.01666 ...
≈
1.6666
×
10
−
2
Prescale value of Input B (
β
) = 1/60 = 0.01666 ...
≈
1.6666
×
10
−
2
Prescale value of Input A, X (mantissa):
ps.
ax
=
1.
6666
Prescale value of Input A, Y (exponent):
ps.
ay
=
10 -2
Prescale value of Input B, X (mantissa):
ps.
bx
=
1.
6666
Prescale value of Input B, Y (exponent):
ps.
by
=
10 -2
HH
H
L
PASS
LL
Encoder
Alarm outputs
Operation Configuration (Application)
Содержание K35-2
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Страница 24: ...Outline Section 1 Outline 1 8 ...
Страница 25: ...2 1 Preparations Section 2 Preparations 2 1 Mounting 2 2 2 2 Using I O 2 4 ...
Страница 54: ...Basic Application Methods Basic Application Methods Section 3 Basic Application Methods 3 18 ...
Страница 62: ...Initial Setup Section 4 Initial Setup 4 8 ...
Страница 148: ...Functions and Operations Section 5 Functions and Operations 5 86 ...
Страница 149: ...6 1 Troubleshooting Section 6 Troubleshooting 6 1 Error Displays 6 2 6 2 Countermeasures 6 3 ...
Страница 152: ...Troubleshooting Section 6 Troubleshooting 6 4 ...
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