background image

86

Changing the set value

CAUTIONS FOR USE

For more information regarding the cautions for use of LC4H series counter, refer to page 118 “LC4H series CAUTIONS FOR USE”.

1. It is possible to change the set
value with the up and down keys (4-
digit 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.

2) Suppose that thew counter is preset to
count down. Whether a preset count-
down value is smaller or larger than the
count value, the counter counts down to
“0 (zero)”.

2. If the set value is changed to “0,”
the unit will not complete count-up. It
starts counting up when the counting
value comes to “0 (zero)” again.

1) Up-count (addition) input
When counting is set to the addition
direction, counting will continue until full
scale is reached (9999 with the 4-digit
type and 999999 with the 6-digit type),
return to zero, and then complete count-
up.

2) Down-count (subtraction) input
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.

The counting value does not become “0
(zero)” and so the counter does not
count up.
3) Directive, independent, and phase
inputs 
The counting value is counted up or
down to any number other than “0” once.
When it comes to “0 (zero)” again, the
counter starts counting up.

E

The decimal point is set using the [UP] and [DOWN] keys to specify the 2nd, 3rd, and 4th digits (this applies only to 4-digit
models).(The 1st digit is set using the [UP] key or [DOWN] key in settings where there is no decimal point (this applies
only to 4-digit models).)

• Setting the pre-scaling value

Q

Holding down the [SET/LOCK] key, press the key for the first digit to access the pre-scaling value setting mode.

Example) 4-digit type 

Example) 6-digit type

W

When the setting mode has been accessed, release the [SET/LOCK] key.

E

Use the [UP] or [DOWN] key to set the pre-scaling value (this applies only to 4-digit models).

Select either: 0.001 to 9.999 (4-digit) or 0.001 to 99.999 (6-digit)

R

Press the [RESET] key to set the displayed pre-scaling value and return to normal operation.

LC4H-S

Example) 6-digit type
Example shows 2nd digit displayed using [UP] key

R

Press the [RESET] key to set the displayed decimal point position and return to normal operation.

Pre-scaling value setting mode displayed
(Example shows default values displayed)

Example) 6-digit type
One-shot output time setting mode displayed
(Example shows default value displayed)

• Setting the one-shot output time

Q

Holding down the [SET/LOCK] key, press the key for the third digit to access the one-shot output time setting mode.

W

When the setting mode has been accessed, release the [SET/LOCK] key.

E

Each time the 1st-digit [UP] key is pressed, the one-shot output time changes in the following sequence, moving to the
right:

(With a 4-digit type, the [DOWN] key can also be used to move to the left.)

R

Press the [RESET] key to set the displayed one-shot output time and return to normal operation.

 1 s 

 0.5 s 

 0.2 s 

 0.1 s 

 0.05 s 

 0.01 s

02/2003

Summary of Contents for LC4H-S

Page 1: ...tems 6 digit display Pin type Screw terminal type PRODUCT TYPES LC4H SV A rubber gasket ATC18002 and a mounting frame AT8 DA4 are included mm inch Digit Count speed Output Operation voltage Power down Additional function Terminal P N insurane Scale Factor 11 Pin LC4H PS R4 AC240V 100 240 V AC Scale Factor Screw LC4H PS R4 AC240VS with 12V DC power supply Scale Factor Voltage Signal Input 11 Pin LC...

Page 2: ...en collector 1 0 107 ope At rated control voltage 12 to 24 V DC 24 V AC Max 3 W 100 mA 30 V DC Transistor output type DC AC type Rating Contact Life Electrical Mechanical Operating conditions Rated operating voltage Rated frequency Rated power consumption Rated control capacity Input mode Max counting speed Counting input input 1 input 2 Reset input Lock input Input signal Output mode One shot out...

Page 3: ...ts are attached in a continuous series the dimension of A is Device installation rail ATA48011 sold separately Min 80 3 150 Min 80 3 150 95 5 112 9 3 760 4 445 45 0 6 0 1 772 024 0 45 0 6 0 1 772 024 0 45 0 6 0 1 772 024 0 A 48 n 2 5 0 6 0 With power supply for sensor NO NC 3 5 4 2 1 11 10 9 8 7 6 3 5 4 2 1 11 10 9 8 7 6 NO NC 3 5 4 2 1 11 10 9 8 7 6 0 V DC 12V 100mA Max 3 5 4 2 1 11 10 9 8 7 6 0 ...

Page 4: ...tor T Lock indicator Y UP keys Changes the corresponding digit of the set value in the addition direction upwards U DOWN keys Changes the corresponding digit of the set value in the subtraction direction down wards I RESET switch Resets the counting value and the output O SET LOCK switch This is used to handle pre scaling values one shot times decimal point position set tings and key lock operatio...

Page 5: ...dent and phase inputs The counting value is counted up or down to any number other than 0 once When it comes to 0 zero again the counter starts counting up E The decimal point is set using the UP and DOWN keys to specify the 2nd 3rd and 4th digits this applies only to 4 digit models The 1st digit is set using the UP key or DOWN key in settings where there is no decimal point this applies only to 4...

Page 6: ... IN2 are completely independent so there is no restriction on signal timing IN1 is the counting input and IN2 is the addition or subtraction directive input IN2 adds at L level and subtracts at H level IN1 is addition input and IN2 is subtrac tion input Addition when the IN1 phase advances beyond IN2 and subtraction when the IN2 phase advances beyond IN1 0 1 2 3 n 3 n 2 n 1 n n n 1 n 2 n 3 3 2 1 0...

Page 7: ...ultaneous with completion of count up While output is being main tained restarting of the count is not possible n Set value One shot Recount II SHOT C Output control is maintained after count up completion for one shot output time Counting is possible despite com pletion of count up However reset occurs simultaneous with output OFF n Set value One shot Hold count SHOT D Output control is maintaine...

Page 8: ... Residual voltage during short circuit 2 V max Impedance when released 100 kΩ min Max applied voltage 40 VDC max Lock input specifications Impedance during short circuit 1 kΩ max At 0 Ω the outflow current is approximately 1 5 mA Residual voltage during short circuit 2 V max Impedance when released 100 kΩ min Max applied voltage 40 DVC max The contact relay should be one which can open close 5 V 1...

Page 9: ...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 Connect with an open collector Use transistors whose characteristics satisfy the criteria given below VCEO 20 V min IC 20 mA min ICBO 6µA max Also use transistors wit...

Page 10: ... polar full wave voltage Operating voltage Surge voltage peak value AC type 6 000V DC type 24V AC type Power supply terminals Input terminals AC type DC type 24V AC type Noise voltage 1 500V 1 000V 600V 1 000V Peak value 0 0 1 2 50 30 50 90 100 Time µs Surge voltage C C C R 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 c...

Page 11: ...ing use dou ble insulated relays etc 2 Always connect loads insulated with basic insulation specifications to the out put contact points The counter unit is also insulated with basic insulation speci fications The combination of the two sat isfies VDE which calls for double insula tion 3 For the applied power supply use one protected by an over current protec tion device that conforms with EN IEC ...

Reviews: