LC4H-R4-AC240VS Panasonic Electric Works, LC4H-R4-AC240VS Datasheet - Page 28
![COUNTER DIGITAL 240VAC SCREW](/photos/6/44/64491/lc4h-r4-ac240vs_sml.jpg)
LC4H-R4-AC240VS
Manufacturer Part Number
LC4H-R4-AC240VS
Description
COUNTER DIGITAL 240VAC SCREW
Manufacturer
Panasonic Electric Works
Series
LC4Hr
Datasheet
1.LC4H-R4-DC24V.pdf
(45 pages)
Specifications of LC4H-R4-AC240VS
Count Rate
30Hz or 5kHz Selectable
Number Of Digits/alpha
4
Input Type
Switch Closure or Transistor Switch
Output Type
Switch Closure
Voltage - Supply
100 V ~ 240 V
Display Type
LCD Red/Yellow
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
255-1219
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LC4H-R4-AC240VS
Manufacturer:
Panasonic Electric Works
Quantity:
135
3) The LC4H series use power supply
without a transformer (power and input
terminals are not insulated). In connect-
ing various kinds of input signals, there-
fore, use a power transformer in which
the primary side is separated from the
ungrounded secondary side as shown in
Fig. A, for the power supply for a sensor
and other input devices so that short-cir-
cuiting can be prevented.
Once the wiring to be used is completely
installed and prior to installing this
counter, confirm that there is complete
insulation between the wires connected
to the power terminals (2 each) and the
wires connected to each input terminal. If
the power and input lines are not insulat-
ed, a short-circuit may occur inside the
counter and result in internal damage.
In addition, when moving your equipment
to a new installation location, confirm
that there is no difference in environmen-
tal conditions as compared to the previ-
ous location.
(except LC4H-S/AC type)
4) The input signal is applied by the
shorting of each input terminal with the
common terminal (terminal Q for 8-pin
type, terminal E for 11-pin type and ter-
minal
connect other terminals or voltages high-
er than 40 V DC , because it may
destroy the internal circuitry.
5) Transistor output
(1) Since the transistor output is insulat-
ed from the internal circuitry by a pho-
tocoupler, it can be used as an NPN
output or PNP (equal value) output.
(The above example is 11-pin type)
6
for screw terminal types). Never
( Fig. A ) Good example
( Fig. B ) Bad example
AC power supply
AC power supply
AC power supply
Insulation transformer
Insulation transformer
Single coil transformer
Counter
Counter
Counter
(+)
(–)
(+)
(–)
(+)
(–)
(–)
(–)
(–)
Alternative
current flow
(e.g., sensor)
(e.g., sensor)
(e.g., sensor)
Input device
Input device
Input device
Note: With the LC4H 8-pin type and the LC4H-W,
there is no diode between points I and O.
(2) Use the diode connected to the out-
put transistor’s collector for absorbing
the reverse voltage from induced loads.
(LC4H only)
6) When wiring, use shielded wires or
metallic wire tubes, and keep the wire
lengths as short as possible.
4. Output mode setting
The output mode can be set with the DIP
switches on the side of the counter.
Make the DIP switch settings before
installing the counter on the panel.
5. Conditions of usage
1) Avoid locations subject to flammable
or corrosive gases, excessive dust, oil,
vibrations, or excessive shocks.
2) Since the cover of the unit is made of
polycarbonate resin, avoid contact with
or use in environments containing methyl
alcohol, benzene, thinners, and other
organic solvents; and ammonia, caustic
sodas, and other alkaline substances.
3) If power supply surges exceed the val-
ues given below, the internal circuits may
become damaged. Be sure to use surge
absorbing element to prevent this from
happening.
4) Regarding external noise, the values
Operating voltage Surge voltage (peak value)
Diode rating:
I
V
F
As NPN output
R
As PNP output
PRECAUTIONS IN USING THE LC4H SERIES
(forward current): 1 A
(reverse voltage): 600 V
24V AC type
DC type
AC type
Load’s power supply
Load’s power supply
LC4H counter
LC4H counter
LC4H counter
{
{
Load
power supply
Load’s
O
O
Load
6,000V
1,000V
I
I
Inductive load
• Surge wave form
[± (1.2 × 50) ms uni-polar full wave voltage]
6) Long periods of continuous operation
in the count-up completed condition (one
month or more) will result in the weaken-
ing of the internal electrical components
from the generated heat and, therefore,
should be avoided. If you do plan to use
the unit for such continuous operation,
use in conjunction with a relay as shown
in the circuit in the diagram below.
below are considered the noise-resistant
voltages. If voltages rise above these
values, malfunctions or damage to the
internal circuitry may result, so take the
necessary precautions.
Noise wave form (noise simulator)
Rise time: 1 ns
Pulse width: 1 µs, 50 ns
Polarity: ±
Cycle: 100 cycles/second
5) When connecting the operation power
supply, make sure that no leakage cur-
rent enters the counter. For example,
when performing contact protection, if
set up like that of diagram A, leaking cur-
rent will pass through C and R, enter the
unit, and cause incorrect operation.
Diagram B shows the correct setup.
Operation power supply
Operation power supply
voltage
Noise
R
100
90
50
30
0
R
0
Relay
Power supply terminals
AC type
1,500V
C
1.2
Time (µs)
Leakage current
Peak value
R
C
24V AC type
(Fig. A)
(Fig. B)
Counter
R
DC type
1,000V
C
R
C
50
Receive output
from contact
at relay R
R
terminals
600V
Input
C
141
C