Characteristics
Non-voltage input type
LC24-F
Flush-mounting type
LC24-C
PC board mounting type
3V DC
(manganese dioxide
lithium battery)
—–
6 years
10G (4 times on 3 axes)
30G (5 times on 3 axes)
10 to 55 Hz: 1 cycle/min double amplitude of 0.3 mm (10 min on 3 axes)
10 to 55 Hz: 1 cycle/min double amplitude of 0.75 mm (1 h on 3 axes)
-10 to +55°C
+14 to 131°F
-25 to +65°C
+13 to 149°F
35 to 85% RH
Addition (UP)
Voltage input type
AC/DC input type
DC input type
Rated operating voltage
Built-in battery
Built-in battery
Battery life
Shock
resistance
Vibration
resistance
Ambient temperature
Storage temperature
Ambient humidity
Counting direction
Functional
Destructive
Functional
Destructive
10 years
10 years
DIMENSIONS
LC24-F, flush mounting type (Common for non-voltage input type and voltage input type)
44.5
1.752
Reset push-key switch*
COUNTER
24
.945
LC24
RESET
mm
(inch)
M3.5 self-up
terminal screw
Panel cutout dimensions
38.9
1.531
22
.866
22.2
+ 0.3
0
.874
+.012
0
4.5
48
1.890
.177
*Without reset push key switch is also available
28.8
1.134
10.1
.398
45
+ 0.6
0
1.772
+.024
0
Panel thickness: 1-4.5 mm
WIRING DIAGRAM
1) Non-voltage input type
2) Voltage input type
• AC/DC voltage input
Contact input
Counting input
1
2
3
Reset input
(1) Reset terminal (contact input)
Counting input
1
or
4
2
4
3
Reset input
(2) Reset terminal (open collector input)
Counting input
1
or
2
4
0V
3
Reset input
• Timing input terminals (
1
,
2
) and reset input terminals (
3
,
4
) are insulated internally.
Open collector input
Counting input
1
0V
2
3
4
0V
Reset input
• DC voltage input
(1) Contact input
Counting input
+V
0V
1
2
• Terminal
2
3
4
Reset input
+V
0V
(2) Open collector input
Counting input
+V
g
0V
Reset input
1
2
3
4
g
0V
+V
Note:
2
4
are connected internally.
4
are connected internally.
(Voltage signal is recognized when the transistor
g
is switched to OFF.)
LH24-C, PC board mounting type
5.08
.200
0.6
.024
33.02
1.300
5.08
.200
Dip terminal x8
COUNTER
LC24
PC board pattern (Bottom view)
Main body’s
8-0.8 dia.
2.54 occupied section
8-.031 dia.
.100
15.24
.600
3.3
.130
0.5
.020
17.1
.673
19
.748
2.54
.100
RESET
1.9
.075
15.24
.600
1.9
.075
42.2
1.661
Reset push-key switch 0.3
.012
4.6
.181
WIRING DIAGRAM
Contact input
15
17
26
28
4.6
5.08 5.08
.200 .200
.181
33.02
1.300
Compatible 28-pin dip terminal
Open collector
input
Reset input
Signal input
15
17
26
28
Signal input
14
12
3
1
Reset input
14
12
3
1
Note:
15
1
3
,
12
17
, and
26
14
28
3 V DC lithium battery
3 V DC lithium battery
are connected
internally.
61
OPERATION EXPLANATION
LC24-F type
• Counts when the
operation signal is ON.
• While the reset input is
ON, the signal time is
not counted and the
display is "0".
LC24-C type
• Counts when the
operation signal is ON.
• While the reset input is
ON, the signal does
not change.
Example
IN
Reset
Count
0
1
9999999
0
1
0
Addition
UP
Example
IN
Reset
Count
0
1
9999999
0
1
0
CAUTIONS
<Non-voltage
input type>
1. Since the current from the operation
signal and reset input terminals
[1-3
(flush mounting type),
E-H
(PC board mounting type)] is small,
use relays and switches which have
high-reliability contact performance.
2. When input signals are triggered
through the transistor’s open collector,
use a small signal transistor with an
I
CBO
less than 1 µA, being sure to trig-
ger them with no voltage across the
collector.
3. When connecting the signal input and
reset input wires, do not run them
parallel to high-voltage or power
cables and avoid using the same
conduit. Use shielded wires or metallic
conduits which are as short as possi-
ble. If the floating capacitance of the
wires exceeds 500 pF (approx. 10 m
for parallel wires of 2 mm
2
), it will
cause malfunctions.
4. Lithium batteries are built in the flush
mounting types. Never throw them into
a fire. Do not dispose of them in trash
intended to be incinerated.
<Voltage
input type>
• AC/DC Voltage input type
1. Apply voltage to the signal input termi-
nal. Do not apply voltage to the reset
input terminal. When voltage exceed-
ing the range of the rated input voltage
is applied to the signal input terminal,
or if voltage is applied to the reset ter-
minal, it may cause break-down of
internal elements.
2. Since the current from the reset input
terminal is small, use relays and
switches which have high-reliability
contact performance.
3. When reset is triggered through the
transistor’s open collector, use a small
signal transistor with an I
CBO
less than
1 µA, being sure to trigger it with no
voltage across the collector.
4. For external reset, make a temporary
short-circuit between the rear reset ter-
minals [3-4].
• Common
1. When connecting the operation signal
wires [1-2] and reset input wires
[3-4], do not run them in parallel with
high-voltage or power cables. Avoid
running signal or reset wires in a
power conduit. Use shielded wires or
metal conduits which are as short as
possible. If the floating capacitance of
these wires exceeds 500 pF (approxi-
mately 10 m for parallel wires of
2 mm
2
), it will cause malfunctions.
2. Lithium batteries are built in.
Never throw them into a fire. Do
not dispose of them in trash intended
to be incinerated.
• DC voltage input type
1.When more than 30 V DC is applied to
the signal or reset input terminals, it
may cause breakdown of internal
elements.
2. For external reset, voltage is applied
between the rear reset terminals
[3-4] to the H level (4.5 to 30 V DC).
In this case, connect (–) to terminal
4
and (+) to terminal
3].
Since they are
polarized, they will not operate with
reverse polarity.
•PC board mounting type—
1. After connecting the external power,
be sure to reset it to make sure that
“0” appears on the display.
2. Battery life is calculated as follows:
t=A
I
t: Battery life (h)
I: Consumption current (mA)
A: Battery capacity when the operating
voltage becomes minimum.
3. Hand soldering:
Soldering iron
Iron tip temperature
Soldering time
30 W to 60 W
Approx. 300°C
(572°F)
Less than approx. 3 seconds
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