k3hb-rnb-l1at2424 Omron Corporation, k3hb-rnb-l1at2424 Datasheet - Page 6

• Manufacturer Part Number: k3hb-rnb-l1at2424
• Description: Rotary Pulse Indicator K3hb-r
• Manufacturer: Omron Corporation

■ What Is Prescaling?
To make calculations using the input pulse to display rotation (rpm)
or circumferential speed, the number of pulses per rotation or the
length of the circumference must be multiplied by a certain
coefficient. This coefficient is called the prescale value.
Rotation speed (rpm) = f
If there are 5 pulses per rotation, then
The actual setting is X = 2.0000 (mantissa) and Y = 10
a: Prescale value
a = 1/5 (= 0.2 = 2
and an accurate rotation speed (rpm) can be calculated.
f: Input pulse frequency (No. of pulses per second)
Proximity
sensor
10
K3HB-R
-1
)
60
a
-1
(exponent).
■ What Is the Auto-zero Function?
If a function
there is no input pulse for a set period. This period is called the auto-
zero time. Set the auto-zero time to slightly longer than the longest
input pulse interval. (The display will not easily return to zero if the
auto-zero time is too long or left at the default setting.)
Time Unit Settings
Note: Time unit can be set only when passing time (F6) is selected.
Input Type Setting
Note: Set to
No-contact or
voltage pulse
input
Contact
scal
min
h.mm.ss
mm.ss.d
(Set this function before using the Digital Indicator.)
The largest measurement range is 30 Hz.
Setting
f1
10
to
or
f6
00
10
NO: Voltage pulse high NC: Voltage pulse low
11
is set, the frequency can be force-set to zero if
when there is a large variation in the display.
Prescale value menu setting
Minute display
h.mm.ss display
mm.ss.d display (d = tenths of a second)
Meaning
01
11
K3HB-R
6