22
3-1
Rotational/Circumferential Speed:
f1
Application example
Measures the rotations of the roll.
Basic Operation
Multiplies the input frequency (Hz) of INA by 60 and displays the result in rpm.
When the appropriate prescale value is selected, the rotational speed of the ob-
ject is displayed. Obtain display value D as follows:
D = f
A
x 60 x
α
f
A
: Input frequency of INA (Hz)
α
: Prescale value
INB input will be ignored.
Item
Unit of display
Prescale value
Rotations
rpm
1/N
rps
1/60N
Frequency of input
pulse
Hz
1/60
kHz
1/60000
Rotational speed
mm/s
1000
π
d/60N
cm/s
100
π
d/60N
m/s
π
d/60N
m/min
π
d/N
km/h
0.06
π
d/N
Where,
N: Number of pulses per rotation
π
D: Length (m) of one rotation
Example:
Displaying rotations (rpm) on condition that there are two pulses per revolu-
tion.
Prescaling value (
α
) = 1/2 = 0.5 = 5.0000 x 10
–1
Prescale value = X x 10
Y
(X: mantissa, Y: exponent)
X (mantissa) of input A = 5.0000
Y (exponent) of input A = –1
Refer to
4-2 Setting Mode
.
FUNCTION
SETTING
REFERENCE
Rotational/Circumferential Speed:
f1
Section 3-1
Содержание K3NR
Страница 1: ...Cat No N093 E1 1A Frequency Rate Meter K3NR ...
Страница 2: ...K3NR Frequency Rate Meter Operation Manual Revised February 2001 ...
Страница 3: ...iv ...
Страница 5: ...vi ...
Страница 148: ...Cat No N093 E1 1A K3NR Frequency Rate Meter OPERATION MANUAL ...