Operation - Omron K3HB Datasheet

Operation

■ Functions (Operating Modes)
F1 to F6
Functions F1 to F6 provide rpm/circumferential speed and other calculation displays by measuring continuous pulses (frequencies).
Example
Length of
processing stage
Function name Function No.
f1
Rpm/circumferential
speed
f2
Absolute ratio
f3
Error ratio
f4
Rotational difference
f5
Flow rate ratio
f6
Passing time
Function
F1 Measures frequency for input A and displays the
Rpm/cir- rotation (rpm) or circumferential speed proportional to
cumferen- the input frequency.
tial speed/
Instanta-
Calculation Display
neous
flowrate
Rotation
speed
Frequency (of
input pulse)
Circumferenti mm/s
al speed
m/min
Instantaneous
flowrate
N = Pulses per rotation
d = Circumferential length per rotation
F1: Displays rotation (rpm) or circumferential speed for one input.
F2 to F5: Displays the calculation result for two rotation (rpm) speeds.
F6: Displays the passing time calculated from the circumferential speed and the length
of the processing stage for one input.
The basic principle used by the Digital Indicator to calculate the rotation speed (rpm) display is
to count the ON/OFF time (T) for input sensor or other device inputs using the internal system
clock, and then automatically calculate the frequency. This frequency (f) is multiplied by 60 and
displayed as the rotation (rpm) speed.
Input sensor or other input pulse ON/OFF time (T) =
• Rotation speed (rpm) = f
• Circumferential speed = Roll circumference
• Passing time=
These calculations are automatically made internally and displayed whenever any input pulse
is received.
Operation
Prescale value ( )
unit
rpm 1/N
rps 1/60 N
Hz 1/60
kHz 1/60000
1000 d/60 N
cm/s 100 d/60 N
m/s d/60 N
d/N
km/h 0.06 d/N
l/min
Check the output
specifications of the input
l/h
device and calculate the
prescale value from the
following equation:
Display value D = ƒa
60
Length of processing stage
Circumferential speed
Operation image (application)
Measuring roller winding speed
60
Rotary Pulse Indicator
Frequency (f) =
T
Rotation speed (rpm)
Measuring motor speed
(for product testing)
K3HB-R
1
T
H
PASS
L
OK/NG
judgment
7