Omron K3HB Datasheet page 13

Operation
■ Functions (Operating Modes)
F1 to F6
These functions use the internal system clock to measure the time between pulses or the pulse ON time and then display time measurements or
a variety of other calculations.
Function name Function No.
f1
Passing speed
f2
Cycle
f3
Time difference
f4
Time band
f5
Measuring length
f6
Interval
Function
F1 The reciprocal of the time (T) from input A ON to input
Passing B ON is multiplied by 60 and displayed.
speed
Input A
Input B
T T
1 R
HOLD input
1
Display
T
1
• Recovery time (T
starting the next measurement.
æ
Display unit:
ç
mm/s, m/s
ç
m/min, km/h, etc.
è
F2 Measures and displays input A cycle (T).
Cycle
Input A
T
1
HOLD input
Display
Measurement range: 20 ms to 3,200 s
æ
Display unit:
ç
ms, s, min.,
ç
min.s.1/10 s
è
F3 Displays the time (T) from input A ON to input B ON.
Time dif-
ference
Input A
Input B
T T
1 R
HOLD input
Display
Measurement range: 10 ms to 3,200 s
• Recovery time (TR) of 20 ms is required before
starting the next measurement.
æ
Display unit:
ç
ms, s, min.,
ç
min.s.1/10 s
è
Example: F1 Passing Speed
Input A
Input B
Internal
system clock
1
Operation
T T T T
2 R 3 4
T
R
1
60 60
T
2
) of 20 ms is required before
R
ö
÷
÷
ø
T T T T
2 3 4 5
T T
1 2
ö
÷
÷
ø
T T T
2 3 4
T T
R R
T T
1 3
ö
÷
÷
ø
The time (T) between input A pulse and input B pulse
is measured by the internal system clock. If, for
example, the system clock measures 100,000 counts
during time T, then
T = 1 system clock count (0.5 s)
T = 0.05 s
F1 (the passing speed) is calculated internally
T
using the formula
display, in this example, would be
1
1200 (m/min).
Operation image (application)
Measuring workpiece passing speed between A and B
A
B
1
60
T
4
Measuring feed cycles for parts
T
5
Measuring workpiece passing time
between A and B
A
B
T
4
Timer Interval Indicator
100,000
1
60 (m/min), and the
T
1
60=
0.05 s
Measuring the length of a
workpiece step by changing
prescale values.
K3HB-P
13