Panasonic LC4HR424SJ, LC4HR424J, LC4H8-R4-AC240V, LC4HR4240ACSJ, LC4H8-R4-DC24V User guide

48

1.890

48

1.890

64.5

2.539

LC4H

02/2003

R4/T4 systems (4-digit display)

DIN 48 SIZE
LCD ELECTRONIC COUNTER

FEATURES

1. Bright and Easy-to-Read Display

A brand new bright 2-color backlight LCD
display. The easy-to-read screen in any
location makes checking and setting pro­cedures a cinch.

2. Simple Operation

Seesaw buttons make operating the unit
even easier than before.

mm inch

3. Short Body of only 64.5 mm 2.539

inch (screw type) or 70.1 mm 2.760
inch (pin type)

With a short body, it easily installs in
even narrow control panels.

4. Conforms to IP66’s Weather
Resistant Standards

The water-proof panel keeps out water
and dirt for reliable operation even in
poor environments.

LC4H

5. Screw terminal and Pin Type are
Both Standard Options

The two terminal types are standard
options to support either front panel
installation or embedded installation.

6. Changeable Panel Cover

Also offers a black panel cover to meet
your design considerations.

7. 4-digit or 6-digit display

Two sizes of displays are offered for you
to choose the one that suits your needs.

8. Conforms With EMC and Low
Voltage Directives

Conforms with EMC directives
(EN50081-2/EN50082-2) and low-volt­age directives (VDE0435/Part 2021) for
CE certification vital for use in Europe.

R6/T6 systems (6-digit display)

Pin type Screw terminal type

PRODUCT TYPES

Digit Count speed Output mode Output Operation voltage Power down insurance Terminal Part No.

4

• Maintain
output/hold count

• Maintain
output/over count I

30 Hz (cps)/

5 KHz (Kcps)

switchable

6

* A rubber gasket (ATC18002) and a mounting frame (AT8-DA4) are included.

76

• Maintain
output/over count II

• One shot/over
count

• One shot/recount I

• One shot/recount II

• One shot/hold
count

(7 modes)

Relay

(1c)

Transistor

(1a)

Relay

(1c)

Transistor

(1a)

100-240 V AC

24 V AC / 24 V DC

12-24 V DC

100-240 V AC

24 V AC / 24 V DC

12-24 V DC

100-240 V AC

24 V AC / 24 V DC

12-24 V DC

100-240 V AC

24 V AC / 24 V DC

12-24 V DC

Available

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

8 pin
11 pin
Screw

LC4H8-R4-AC240V
LC4H-R4-AC240V
LC4H-R4-AC240VS
LC4H8-R4-AC24V
LC4H-R4-AC24V
LC4H-R4-AC24VS
LC4H8-R4-DC24V
LC4H-R4-DC24V
LC4H-R4-DC24VS
LC4H8-T4-AC240V
LC4H-T4-AC240V
LC4H-T4-AC240VS
LC4H8-T4-AC24V
LC4H-T4-AC24V
LC4H-T4-AC24VS
LC4H8-T4-DC24V
LC4H-T4-DC24V
LC4H-T4-DC24VS
LC4H8-R6-AC240V
LC4H-R6-AC240V
LC4H-R6-AC240VS
LC4H8-R6-AC24V
LC4H-R6-AC24V
LC4H-R6-AC24VS
LC4H8-R6-DC24V
LC4H-R6-DC24V
LC4H-R6-DC24VS
LC4H8-T6-AC240V
LC4H-T6-AC240V
LC4H-T6-AC240VS
LC4H8-T6-AC24V
LC4H-T6-AC24V
LC4H-T6-AC24VS
LC4H8-T6-DC24V
LC4H-T6-DC24V
LC4H-T6-DC24VS

PART NAMES

UP

DOWN

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

Controlled output indicator

Reset indicator

Lock indicator

Reset switch

Lock switch

Counter display

Set value display

Up keys

Down keys

ON

12345678

DIP switches

(Same for screw-down terminal type)

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

Controlled output indicator

Reset indicator

Lock indicator

Reset switch

Lock switch

Counter display

Set value display

Up keys

ON

12345678

DIP switches

(Same for screw-down terminal type)

02/2003

LC4H

SPECIFICATIONS

Rated operating voltage
Rated frequency
Power consumption
Control output

Input mode

Counting speed
Min. counting input time

Rating

Contact

Life

Electrical

Mechanical

Operating
conditions

Connection
Protective construction

Note: 1) the 24 V AC type can be operated also with 24 V DC.

Reset input method
Lock input

Input signal

Output mode
One shot output time
Indication

Digit

Memory
Contact arrangement
Initial contact resistance
Contact material
Mechanical
Electrical
Operating voltage range

Initial withstand voltage

Initial insulation resistance
(At 500 V DC)

Temperature rise

Vibration
resistance

Shock
resistance

Ambient temperature
Ambient humidity
Air pressure
Ripple rate

Item

Between live and dead metal parts: 2,000 Vrms for 1 min (11-pin type)

Functional
Destructive
Functional
Destructive

Ralay output type

AC type

100 to 240 V AC, 24 V AC

50/60 Hz common

Max. 10 V A

1)

DC type

12 to 24 V DC

—

Max. 3 W

1 Form C: 5 A, 250 V AC (resistive)

Addition (UP)/Subtraction (DOWN)/Direction (DIR)/Individuality (IND)/Phase (PHASE)

5 modes selectable by DIP switch

30 Hz/5 kHz (selectable by DIP switch)

16.7 ms at 30 Hz/0.1 ms at 5 kHz ON time: OFF time = 1:1

Signal reset/Push-key switch, Min. input time 1 ms, 20 ms (selected by DIP switch)

Min. input signal width: 20 ms

Contact or Open collector input/Input impedance: 1 kΩ or less, Input residual voltage: 2 V or less,

Open impedance: 100 kΩ or more, Max. energized voltage: 40 V DC

HOLD-A/HOLD-B/HOLD-C/SHOT-A/SHOT-B/SHOT-C/SHOT-D, 7 modes selectable by DIP switch

Approx. 1 s

7-segment LCD, Counter value (backlight red LED), Setting value (backlight yellow LED)

4-digit display type –999 to 9999 (–3 digits to +4 digits) (0 to 9999 for setting)

6-digit display type –99999 to 999999 (–5 digits to 6 digits) (0 to 999999 for setting)

EEP-ROM (Overwriting times: 10

1 Form C

100 mΩ (at 1 A 6 V DC)

2.0 × 10

5

ope. (At rated control voltage)

1.0 × 10

Ag alloy/Au flush

7

ope. (Except for switch operation parts)

85 to 110 % of rated operating voltage

Between input and output: 2,000 Vrms for 1 min

Between open contacts: 1,000 Vrms for 1 min

Between live and dead metal parts: Min. 100 MΩ (11-pin type)

Between input and output:

Between open contact:

Min. 100 MΩ

Min. 100 MΩ

Max. 65° C (under the flow of nominal operating current at nominal voltage)

10 to 55 Hz (1 cycle/min), single amplitude: 0.35 mm .014 inch (10 min on 3 axes)

10 to 55 Hz (1 cycle/min), single amplitude: 0.75 mm .030 inch (1 h on 3 axes)

Min. 98 m 321.522 ft./s

Min. 294 m 964.567 ft./s

–10° C to 55° C +14° F to +131° F

Max. 85 % RH

—

20 % or less — 20 % or less

860 to 1,060 h Pa

8-pin/11-pin/screw terminal

IP66 (front panel with a rubber gasket)

Transistor output type

AC type DC type

100 to 240 V AC, 24 V AC

50/60 Hz common

Max. 10 V A

1)

12 to 24 V DC

—

Max. 3 W

1 Form A: 100 mA, 30 V DC Open collector output (Max.)

5

ope. or more)

1 Form A (Open collector)

—
—

1.0 × 10

7

—

ope. (At rated control voltage)

Between live and dead metal parts: 2,000 Vrms for 1 min (11-pin type)

Between input and output: 2,000 V AC for 1 min

Between live and dead metal parts: Min. 100 MΩ (11-pin type)

Between input and output:

2

(4 times on 3 axes)

2

(5 times on 3 axes)

Min. 100 MΩ

77

UP

DOWN

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

48

1.890

48

1.890

48

1.890

48

1.890

50

1.969

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

;

66

2.598

63.5

2.500

1

.039

Installation frame for
embedded installations
AT8-DA4 (supplied)

Installation frame
for embedded
installations
ATA4811 (supplied)

Installation panel

Rubber gasket
ATC18002 (supplied)

66

2.598

Installation panel

Rubber gasket
ATC18002 (supplied)

50

1.969

1

.039

(44.5

(1.752

90

3.543

(

11p cap AT8-DP11

sold separately

)

(

8p cap AD8-RC

sold separately

)

11-pin type

8-pin type

DIN rail terminal block
ATC18004 or ATC18003
(sold separately)

Device installation rail
AT8-DLA1
(sold separately)

( ) Dimensions for 8-pin type.

95.5

(90.0)

3.760

(3.543)

80 min.

3.150

80 min.

3.150

45

-0.6
0

45

-0.6
0

1.772

-.024
0

1.772

-.024
0

A

A = (48 × n – 2.5)

–0.6

0

45

-0.6
0

1.772

-.024
0

1

2

3

4

5

6

7

8

9

10

11

Reset
Input 1
Input 2
Lock

COM

NC

NO

Operation voltage

(+)(–)

1

2

3

4

5

6

7

8

9

10

11

Reset
Input 1
Input 2
Lock

Operation voltage

(+)(–)

851

7

6

2

3

4

COM

NO

Operation voltage

(+)(–)

Reset

Input 1

Input 2

851

7

6

2

3

4

Operation voltage

(+)(–)

Reset

Input 1

Input 2

12345

678910

NO NC

COM

Reset
Input 1
Input 2
Lock

Operation voltage

(–)(+)

12345

6

78910

Reset
Input 1
Input 2
Lock

Operation voltage

(–)(+)

LC4H

UP

DOWN

RESET

LOCK

COUNTER LC4H

48

1.890

48

1.890

5.5

.217

70.1

2.760

55.6

2.189

7.5

.295

(44.5

(1.752

5.5

.217

64.5

2.539

7.5

.295

(44.5

(1.752

48

1.890

RESET

LOCK

COUNTER LC4H

48

1.890

70.1

2.760

55.6

2.189

5.5

.216

64.5

2.539

7.5

.295

5.5

.217

7.5

.295

(44.5

(1.752

(44.5

(1.752

02/2003

DIMENSIONS (units: mm inch)

• LC4H electrical counter

Screw-down terminal type

(embedded installation)

Screw-down terminal type

(embedded installation)

Pin type (embedded installation/

front panel installation)

Pin type (embedded installation/

front panel installation)

• Dimensions for embedded installation (with adapter installed)

Screw-down terminal type Pin type

Dimensions for front panel installations• Installation panel cut-out dimensions

•

The standard panel cut-out dimensions are shown
below. Use the installation frame (AT8-DA4) and
rubber gasket (ATC18002).

• For connected installations

Note 1: The installation panel thickness should be between 1

and 5 mm .039 and .197 inch.

Note 2: For connected installations, the waterproofing ability

between the unit and installation panel is lost.

TERMINAL LAYOUT AND WIRING

• 8 pin type

Note: For connecting the output leads of the transistor output type, refer to 6) Transistor output on page 99.

78

• 11 pin type

Relay output type Transistor output typeRelay output type Transistor output type

• Screw-down terminal type

Relay output type Transistor output type

ON

12345678

DIP switches See note 2

(Same for 6-digit, screw-down terminal type)

1

3

4

5

8

9

2

6

7

UP

DOWN

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

RESET

LOCK

COUNTER LC4H

OP.
RST
LOCK

1

3

4

5

7

8

2

6

LC4H

02/2003

SETTING THE OPERATION MODE AND COUNTER

Setting procedure 1) Setting the operation mode (input mode and output mode)

Set the input and output modes with the DIP switches on the side of the unit.

DIP switches

Item

1
2
3
4
5
6
7
8

Operation mode Refer to table 1

Minimum reset input signal width 20 ms 1 ms

Maximum counter setting 30 Hz 5 kHz

Input mode Refer to table 2

Setting procedure 2) Setting the set value

Set the set value with the keys on the front of the unit.

Front display section

Q Counter display
W Set value display
E Controlled output indicator
R Reset indicator
T Lock indicator
Y UP keys

[Changes the corresponding
digit of the set value in the
addition direction (upwards)]

DIP switch

ONOFF

Table 1: Setting the output mode

DIP switch No.

1 2 3

ON ON ON SHOT-A

OFF OFF OFF SHOT-B

ON OFF OFF SHOT-C

OFF ON OFF SHOT-D

ON ON OFF HOLD-A

OFF OFF ON HOLD-B

ON OFF ON HOLD-C

OFF ON ON —

Table 2: Setting the input mode

DIP switch No.

6 7 8

ON ON ON Addition input

OFF OFF OFF Subtraction input

ON OFF OFF Directive input

OFF ON OFF Independent input

ON ON OFF Phase input

OFF OFF ON —

ON OFF ON —

OFF ON ON —
Note 1: The counter and set value displays will display DIP Err.
Note 2: Set the DIP switches before installing the unit.

The new settings

are valid after power

OFF  ON

Output mode

See note 1

Input mode

See note 1
See note 1
See note 1

U DOWN keys

Changes the corresponding digit of
the set value in the subtraction
direction (downwards)

I RESET switch

Resets the set value and the output

O LOCK switch

Locks the operation of all keys on
the unit

• Changing the set value

1. It is possible to change the set
value with the up and down keys (4­digit type only) even during counting.
However, be aware of the following
points.

1) If the set value is changed to less than
the count value with counting set to the
addition direction, counting will continue
until it reaches full scale (9999 with the
4-digit type and 999999 with the 6-digit
type), returns to zero, and then reaches
the new set value. If the set value is
changed to a value above the count
value, counting will continue until the
count value reaches the new set value.

Q Counter display
W Set value display
E Controlled output indicator
R Reset indicator
T Lock indicator

2) If counting is set to the subtraction
direction, counting will continue until full
scale (-999 with the 4-digit type and ­99999 with the 6-digit type) regardless of
the new set value, and then the display
will change to with the 4-digit
type and with the 6-digit type.

2. If the set value is changed to “0,”
the unit will not complete count-up.
However, be aware of the following
points.

1) When counting is set to the addition
direction, counting will continue until full
scale is reached (9999 with the 4-digit

Y UP keys

Changes the corresponding digit of
the set value in the addition direc­tion (upwards)

U RESET switch

Resets the set value and the output

I LOCK switch

Locks the operation of all keys on
the unit

type and 999999 with the 6-digit type),
return to zero, and then complete count­up.

2) When counting is set to the subtrac­tion direction, counting will continue until
full scale is reached (-999 with the 4-digit
type and -99999 with the 6-digit type),
and then the display will change to

with the 4-digit type and

with the 6-digit type.

3) For directive, independent, and phase
input, when the counter value increases
or decreases from the value "0" and then
returns back to the value "0," count-up is
completed.

79

0 1 2 3 n-3 n-2 n-1 n

n n-1 n-2 n-3 3 2 1 0

H

L

H

L

IN1

IN2

Counting (subtraction)

Counting (addition)

Blocked

AA AA

Reset

Count-up completed

AA AA

n n-1 n-2 n-4n-3 01

012 43nn-1

H
L

H
L

IN1

IN2

Counting (subtraction)

Counting (addition)

BlockedBlocked

Reset

Count-up completed

H

L

H

L

Counting

IN1

IN2

Addition Subtraction Addition

AA AA

012 34321012 34

Reset

Counting

IN1

IN2

H
L

H
L

01 2 343 2 11223

Reset

Counting

IN1

IN2

BB

001 2 123

Reset

H

L

H

L

Phase advance Phase retard

LC4H

02/2003

OPERATION MODE

1. Input mode

For the input mode, you can choose one of the following five modes

• Addition

• Subtraction

• Directive

• Independent

• Phase

UP

DOWN

DIR

IND

PHASE

Input mode

Addition

UP

Subtraction

DOWN

Directive

DIR

Operation *Minimum input signal width 30 Hz: 16.7 ms; 5 kHz: 0.1 ms

IN1 or IN2 works as an input block
(gate) for the other input.

IN1 is the count input and IN2 is the
addition or subtraction directive input.
IN2 adds at L level and subtracts at H
level.

• Example where IN1 is the count input and IN2 is the input block (gate).

• Example where IN2 is the count input and IN1 is the input block (gate).

* “A” must be more than the minimum input signal width.

Independent

Phase

PHASE

80

IN1 is addition input and IN2 is subtrac­tion input.

IND

Addition when the IN1 phase advances
beyond IN2, and subtraction when the
IN2 phase advances beyond IN1.

* “A” must be more than the minimum input signal width.

* IN1 and IN2 are completely independent, so there is no restriction on signal

timing.

* “B” must be more than the minimum input signal width.

2. Output mode

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF

ON

n-3 n-2 n-1 n

321 0

Able Unable

n-2 n-1 n n+2n+1

210 -2-1

Able

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF

ON

n-2 n-1 n n+2n+1

210 -2-1

Able

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF OFF

ON

n-2 n-1 n n+2n+1

210 -2-1

Approx. 1 s

Able

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF OFF

ON

n-2 n-1 0 21

2 1 n n-2n-1

Reset (automatic)

Approx. 1 s

Able

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF OFF

ON

n-1 n n+1 10

1 0 -1 n-1n

Reset (automatic)

Approx. 1 s

Able

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF OFF

ON

n-1 n 10

1 0 n-1n

Reset (automatic)

Approx. 1 s

AbleAble Unable

Counting (addition)

Counting (subtraction)

Counting able/unable

Output control

OFF OFF

ON

02/2003

For the operation mode, you can choose one of the following seven modes

• Maintain output/hold count

• Maintain output/over count I

• Maintain output/over count II

• One shot/over count

• One shot/recount I

• One shot/recount II

• One shot/hold count

HOLD-A

HOLD-B

HOLD-C

SHOT-A

SHOT-B

SHOT-C

SHOT-D

LC4H

Output mode

Maintain output

Hold count

HOLD-A

Maintain output

Over count I

HOLD-B

Maintain output

Over count II

HOLD-C

One shot

Over count

SHOT-A

Operation (Example when input mode is either addition or subtraction)

Output control is maintained after
count-up completion and until resetting.
During that time, the count display does
not change from that at count-up com­pletion.

* n: Set value

Output control is maintained after
count-up completion and until resetting.
However, counting is possible despite
completion of count-up.

* n: Set value

Output control is maintained after
count-up completion and until the next
signal enters. However, counting is
possible despite completion of count­up.

* n: Set value

Output control is maintained after
count-up completion for a fixed time
(approx. 1 sec). Counting is possible
despite completion of count-up.

Output control is maintained after
count-up completion for a fixed time

One shot

Recount I

SHOT-B

(approx. 1 sec). Counting is possible
despite completion of count-up.
However, reset occurs simultaneous
with completion of count-up. While out­put is being maintained, restarting of
the count is not possible.

Output control is maintained after
count-up completion for a fixed time

One shot

Recount II

SHOT-C

(approx. 1 sec). Counting is possible
despite completion of count-up.
However, reset occurs simultaneous
with output OFF.

Output control is maintained after
count-up completion for a fixed time

One shot

Hold count

SHOT-D

(approx. 1 sec). During that time, the
count display does not change from
that at count-up completion. Reset
occurs simultaneous with output OFF.

* n: Set value

* n: Set value

* n: Set value

* n: Set value

81

11-pin type

Screw terminal type

3 4 5 6 7

8-pin type

1 — 5 4 3

6 7 8 9 10

Reset input

Input 1

Input 2

Lock
input

11-pin type

Screw terminal type

3

4 5 6 7

8-pin type

1

— 5 4 3

6 7 8 9

10

Reset input

12 to 40V DC

Q

(The above example is for reset input)

11-pin type

Screw terminal type

3 4 5 6 7

8-pin type

1 — 5 4 3

6 7 8 9 10

Reset input

Input 1

Input 2

Lock
input

LC4H series CAUTIONS FOR USE

10

2

3

(

Fig. A

)

Input contact
point or transistor

2

3

10

Power
supply

Input
terminal

terminal

Input

10

2

3

3

2

10

(

Fig. B

)

Input contact
point or transistor

Power
supply

point or transistor

Input contact

terminal

Input

terminal

Input

(

Fig. C

)

Power
supply

3

3

Input contact
point or transistor

10

2

10

2

terminal

Input

terminal

Input

02/2003

PRECAUTIONS DURING USAGE

1. Terminal wiring

1) When wiring the terminals, refer to the
terminal layout and wiring diagrams and
be sure to perform the wiring properly
without errors.

2) For embedded installation applica­tions, the screw-down terminal type is
recommended.
Use either the rear terminal block (AT8­RR) or the 8P cap (AD8-RC) for the 8­pin type, and the 11P cap (AT8-DP11)
for the 11-pin type. Avoid soldering
directly to the round pins on the unit.
For front panel installation applications,
use the 11-pin type DIN rail terminal
block (ATC18004).

3) After turning the unit off, make sure
that any resulting induced voltage or
residual voltage is not applied to power
supply terminals W through U (8-pin
type), W through P (11-pin type) or

2

and (screw-down terminal type). (If

1

the power supply wire is wired parallel to
the high voltage wire or power wire, an
induced voltage may be generated
between the power supply terminals.)

4) Have the power supply voltage pass
through a switch or relay so that it is
applied at one time. If the power supply
is applied gradually, the counting may
malfunction regardless of the settings,
the power supply reset may not function,
or other such unpredictable occurrence
may result.

2. Input connections

The power circuit has no transformer.
When an input signal is fed to two or
more counters at once, do not arrange
the power circuit in an independent way.
If the counter is powered on and off inde­pendently as shown in Fig. A, the coun­ter's internal circuitry may get
damaged.Be careful never to allow such cir­cuitry. (Figs. A, B and C show the circuitry for
the 11-pin type.)

one input signal can be fed to two or
more counters at once, as shown in Fig. C.

3. Input and output

1) Signal input type
(1) Contact point input
Use highly reliable metal plated contacts.
Since the contact point’s bounce time
leads directly to error in the count value,
use contacts with as short a bounce time
as possible. In general, select Input 1
and Input 2 to have a maximum counting
speed of 30 Hz and to be reset with a
minimum input signal width of 20 ms.
(2) Non-contact point input

age of less than 2 V when the transistor
is on.
* The short-circuit impedance should be

Note: The LC4H-W does not have the lock input

7

R .

less than 1 kΩ.

[When the impedance is 0 W, the current
coming from the input 1 and input 2 ter­minals is approximately 12 mA, and from
the reset input and lock input terminals is
approximately 1.5 mA.]

Also, the open-circuit impedance should
be more than 100 kΩ.

* As shown in the diagram below, from a

non-contact point circuit (proximity
switches, photoelectric switches, etc.)
with a power supply voltage of between
12 and 40 V, the signal can be input
without using an open collector transis­tor. In the case of the diagram below,
when the non-contact point transistor Q
switches from off to on (when the signal
voltage goes from high to low), the sig­nal is input.

2) The input mode and output mode

If independent power circuitry must be used,
keep the input contacts or transistors sepa­rate from each other, as shown in Fig. B.
When power circuitry is not independent,

98

Note: The LC4H-W does not have the lock input

7

R .

Connect with an open collector. Use
transistors whose characteristics satisfy
the criteria given below.
V

CEO = 20 V min.

I

C = 20 mA min.

I

CBO = 6µA max.

Also, use transistors with a residual volt-

change depending on the DIP switch set­tings. Therefore, before making any con­nections, be sure to confirm the opera­tion mode and operation conditions cur­rently set.

3) For the power supply of the input

Peak value

0

0 1.2 50

30

50

90

100

Time (µs)

Surge voltage (%)

C

C

CR

(Fig. A)

(Fig. B)

Operation power supply

Leakage current

R

C

Operation power supply

R

R

C

C

R

R

Relay Counter

Receive output
from contact
at relay R

Load’s

power supply

Inductive load

LC4H counter

Diode rating:

I

F (forward current): 1 A

V

R (reverse voltage): 600 V

device, use a single-phase or double-

Load

Load’s power supply

LC4H counter

{OI

As NPN output

Load

Load’s power supply

LC4H counter

As PNP output

{OI

LC4H counter

Input

terminals

Circuit

Rectifier circuits

Power
supply

Insulated transformer
is necessary

02/2003

phase insulated power transformer. The
second-phase side must not be ground­ed.

4) Since the power supply circuitry does

not contain a transformer, be aware that
it is not possible for simultaneous input
from an input contact point or transistor
to a LC4H counter with independent
power supply operation.

5) The input signal is applied by the
shorting of each input terminal with the
common terminal (terminal 1 for 8-pin
type, terminal 3 for 11-pin type and ter­minal 6 for screw-down terminal types).
Never connect other terminals or volt­ages higher than DC 40 V, because it
may destroy the internal circuitry.

6) Transistor output
(1) Since the transistor output is insulated

from the internal circuitry by a photo­coupler, it can be used as an NPN out­put or PNP (equal value) output. (The
above example is 11-pin type)

(2) Use the diode connected to the out-

4. Output mode setting

The output mode can be set with the

switches on the side of the counter.

DIP
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 val­ues given below, the internal circuits may
become damaged. Be sure to use surge
absorbing element to prevent this from
happening.

Operating voltage

AC type 6,000V
DC type

24V AC type

• Surge wave form

[± (1.2 × 50) ms uni-polar full wave voltage]

Surge voltage (peak value)

1,000V

6) Long periods of continuous operation
in the count-up completed condition (one
month or more) will result in the weaken­ing 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.

Note: With the LC4H 8-pin type and the LC4H-W,
there is no diode between points I and O.

put transistor’s collector for absorbing
the reverse voltage from induced loads.
(LC4H only)

7) When wiring, use shielded wires or

metallic wire tubes, and keep the wire
lengths as short as possible.

4) Regarding external noise, the values
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.

Power supply terminals

DC type

24V AC type

Noise

voltage

AC type

1,500V 1,000V 600V

Noise wave form (noise simulator)
Rise time: 1 ns
Pulse width: 1 µs, 50 ns
Polarity: ±
Cycle: 100 cycles/second

Input

terminals

5) When connecting the operation power
supply, make sure that no leakage cur­rent enters the counter. For example,
when performing contact protection, if
set up like that of diagram A, leaking cur­rent will pass through C and R, enter the
unit, and cause incorrect operation.
Diagram B shows the correct setup.

99

6. Self-diagnosis function

or

02/2003

If a malfunction occurs, one of the following displays will appear.

Display Contents

Minimum value went below –999
or –99999. See note 1.

Incorrect DIP switch setting.

Malfunctioning CPU.

Malfunctioning memory. See
note 2.

Note 1: When the counter value goes below the minimum value during any of the subtraction, directive, independent, or phase input modes.
Note 2: Includes the possibility that the EEPROM’s life has expired.

Output condition Restoration procedure Preset values after restoration

Enter reset or RESET

No change

OFF

key.
Restart unit (correct DIP

switch settings)

Enter reset, RESET key,
or restart unit.

The values at start-up before the CPU
malfunction occurred.

7. CE Marking Certification

1) EMC directive (89/336/EEC)
As a counter unit, the LC4H series con­forms to EMC directives. Applicable
standards are EN50081-2 and EN50082-

2.

2) Low voltage directive (73/23/EEC)
In order to satisfy VDE0435/Part 2021,
be sure to adhere to the following instal­lation conditions and precautions.
(1) The counter uses a non-transformer
power supply and the power supply and
input signal terminals are not insulated.

• When a sensor is connected to the

input circuit, install double insulation on
the sensor side.

• With contact-point inputting, use dou­ble-insulated relays, etc.
(2) Always connect loads insulated with
basic insulation specifications to the out­put contact points. The counter unit is
also insulated with basic insulation speci­fications. The combination of the two sat­isfies VDE, which calls for double insula­tion.
(3) For the applied power supply, use
one protected by an over-current protec-

tion device that conforms with EN/IEC
standards (e.g. 250 V, 1 A fuse).
(4) During installation, always use a ter­minal block or the appropriate sockets.
Do not touch the terminals, or other part
of the counter unit while it is on. Before
installation or removal of the unit, first
verify that no voltage is being applied to
any of the terminals.
(5) Do not use the counter in a safety cir­cuit. When the unit is being used in a cir­cuit such as a heater circuit, install a pro­tection circuit on the machine side.

No change

0

100