A&D Digital Indicator AD-4531A Bedienungsanleitung PDF herunterladen (Seite 2)

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7. CALIBRATION

The AD-4531B measures voltage signals from sensors and displays the

values. Calibration is performed so that the AD-4531B performs correctly.

The decimal point (Cf-01), minimum division (Cf-02) and rated

capacity (Cf-03) are set using the function mode.

The zero point input voltage (Cf-04), the span input voltage (Cf-05)

and the displayed value for the span input voltage (Cf-06) are

adjusted using the calibration mode.

Calibration setting using the function mode is also available. (Digital

span)

* During calibration, maintain a stable environment to prevent

calibration errors.

* When the measured value is stable, the HOLD LED is turned on.

* The decimal point blinks to indicate that the current value is not a

measured value.

7.1. Calibration Modes

In the measurement mode, press and to enter the

calibration mode.

Enter the zero point calibration mode.

Return to the measurement mode.

7.1.1. Zero point calibration mode

With nothing on the load cell, wait for

the HOLD LED to turn on and press .

Perform zero point calibration and

proceed to the span calibration mode.

Cancel zero point calibration and

proceed to the span calibration mode.

Hold down to display the mV/V value of

the zero point.

7.1.2. Span calibration mode

Input the value to be displayed when the actual load

for span calibration is applied to the load cell.

Wait for the HOLD LED to turn on and press .

Select the digit to be changed.

Increase the value of the digit to be changed.

Change the polarity.

Perform span calibration and

proceed to the storing mode.

Cancel span calibration and

proceed to the storing mode.

* After span calibration, the AD-4531B displays the mV/V value of

span calibration for 3 seconds, and then proceeds to the storing

mode.

7.1.3. Storing mode

Save the calibration zero, span and displayed

value acquired.

When calibration is not performed, data is not

saved.

Save the data acquired and return to the

measurement mode.

Do not save the data acquired and

return to the measurement mode.

7.2. Calibration Errors

Display Cause Remedy

C?e2

Voltage at zero point

calibration exceeds in the

positive direction.

C?e3

Voltage at zero point

calibration exceeds in the

negative direction.

Confirm the rating

and connection of the

load cell.

Display Cause Remedy

C?e4

The value of the calibration

weight exceeds the rated

capacity.

Use a proper calibration

weight.

C?e5

The value of the calibration

weight is less than the

minimum division value.

Use a proper calibration

weight.

C?e6

The load cell sensitivity is

insufficient.

Confirm the load cell

connection. Use a proper

calibration weight.

C?e7

Voltage at span calibration is less

than the voltage at the zero point.

Confirm the load cell

connection.

C?e8

The load cell output voltage is

too high when loaded to

capacity.

Use a load cell with a

greater rated capacity or

set a smaller rated

capacity value.

8. FUNCTION MODE

Use the function mode to set various functions. The set values are saved in

non-volatile memory and are maintained even if the power is disconnected.

8.1. Description of Functions

The first 2 digits of the function No. are the function group. The last 2 digits

of the Function No. are the function item.

Calibration function

Basic function

Comparator function

Use this function to set the comparator operation.

Analog output function

Use this function to set the output values of the analog

voltage output and analog current output.

Serial communication function

Use this function to set the RS-232C and RS-485.

* Set the zero point input voltage (Cf-04), the span input voltage (Cf-05) and the

displayed value for the span input voltage (Cf-06) in the calibration mode.

* Set the upper limit value (f1-01) and lower limit value (f1-02) in the

comparator mode.

* When setting a function, the decimal point blinks to indicate that the

current value is not a measured value.

* In the digital filter setting mode (f0-02), press to confirm the

measured value.

When the measured value is displayed, the OK LED blinks.

Press to set the display to zero. And press to return to the

measurement mode.

8.2. Key Operation

In the measurement mode, press and to enter the function selection mode.

8.2.1. Function selection mode

Select the function group. (First 2 digits)

Select the function item. (Last 2 digits)

Enter the setting changing mode.

Save the setting in non-volatile memory and then return to the

measurement mode.

8.2.2. Setting changing mode (Two methods)

Ｐ Parameter selection method (All digits blinking)

Change the parameter.

Enter the setting and return to the function selection mode.

Cancel the setting and return to the function selection mode.

Ｄ Digital input method (Change the blinking digit only)

Move the digit to be changed to the right.

Change the value of the blinking digit.

Change the polarity.

Enter the setting and return to the function selection mode.

Cancel the setting and return to the function selection mode.

8.3. Function Items

8.3.1. Calibration (C function)

Function No.

Setting range

Function Description

Default value

Setting type

Cf-01

0 to 5

Decimal point

position

Decimal point position of the measured

value

000000 3

000.000

00000.0 4

00.0000

0000.00 5

0.00000

Cf-02

1 to 50

Minimum

division

Minimum division (d) of the measured value

:10

:20

:50

Cf-03

1 to 999999

Rated capacit

Measurement is possible up to the value

of this setting plus 8 d (8 minimum

divisions)

Decimal point position depends on

Cf-01 .

70000

Cf-04

-7.00000

to 7.00000

Input voltage

of zero point

Input voltage from the load cell at zero

point

(Unit: mV/V)

0.00000

Cf-05

0.00001

to 9.99999

Input voltage

of span

Input voltage from the load cell at span

(measurement point - zero point)

(Unit: mV/V)

3.20000

Cf-06

-999999

to 999999

Displayed value

for input

oltage of span

Displayed value for span (measurement

point - zero point)

Decimal point position depends on

Cf-01 .

32000

Cf-07

0 to 100

Zero

adjustment

range

Range to enable zero adjustment by the

ZERO key

Expressed as a percentage of the rated

capacity with the calibration zero point

as the center.

100

Cf-08

0.0 to 5.0

Zero tracking

time

Performed in combination with zero

tracking width. (Unit: second)

When

0.0

, zero tracking is not performed.

0.0

Cf-09

0.0 to 9.9

Zero tracking

width

Performed in combination with zero

tracking time. (Unit: d)

When

0.0

, zero tracking is not performed.

0.0

Cf-10

0 to 2

Power on zero

Digital zero when the power is connected

: Digital zero function off

: Perform digital zero

: Use state when the power is disconnected

Cf-11

1 to 2

Zero operation

On with

Off with

: On or off with

8.3.2.

Basic Functions

Function No.

Setting range

Function Description

Default value

setting type

f0-01

00000

to 11111

Disable key

Each digit of the setting corresponds to a key

switch. Only available in the measurement mode.

Key assignment

Enabled

0 0 0 0 0

Disabled

00000

(Binary)

f0-02

0 to 9

Digital filter

Cutoff frequency

Off

: 2.8 Hz

: 11 Hz

: 2 Hz

: 8 Hz

: 1.4 Hz

: 5.6

: 1 Hz

: 4 Hz

: 0.7 Hz

f0-03

0 to 20

Display

update

rate

1 time/second

: 10 times/second

: 2 times/second

: 20 times/second

: 5 times/second

f0-04

0 to 4

Hold mode

Off

Bottom hold

Sample hold

Bipolar peak hold

Peak hold

f0-05

0.0 to 9.9

Hold

averaging

time

Set by the unit of 0.1 second.

When

0.0

, averaging is not performed.

0.0

f0-06

0000

to 1111

Latch

function

Corresponds to an external input latch.

Setting and latch

assignment

Off

Displayed value latch

Comparator latch

Analog output latch

Serial output latch

0000

(Binary)

f0-07

0 to 6

External

input 1

f0-08

0 to 6

External

input 2

Off

: Start hold

: DZ key

: Stop hold

: Hold

: Latch

: Print

f0-09

0 to 9

External

output 1

f0-10

0 to 9

External

output 2

Off

: OK

: DZ key

: Lo

: Holding

: Measuring (ON)

: Hold busy

: Measuring (1 Hz)

: Hi

: Measuring (50 Hz)

8.3.3. Comparator

Function No.

setting range

Function Description

Default value

setting type

f1-01

-999999 to

999999

Upper limit

value

Upper limit value of comparator.

Decimal point position depends on

Cf-01.

f1-02

-999999 to

999999

Lower limit

value

Lower limit value of comparator.

Decimal point position depends on

Cf-01.

f1-03

0 to 2

Comparato

mode

:Off

:On excluding the zero band

:Always on

f1-04

-999999 to

999999

Zero band

Set the zero band for the comparator

mode.

f1-05

1 to 3

Hysteresis

mode

Hysteresis direction

:Upward 2-level judgment

:Upper / lower limit judgment

:Downward 2-level judgment

f1-06

0.0 to 5.0

Hysteresis

time

Set the hysteresis time by the unit of 0.1 second.

When

0.0

, the hysteresis mode is not used.

0.0

f1-07

00 to 99

Hysteresis

width

Set the hysteresis width by the unit of d.

When

0.0

, the hysteresis mode is not used.

8.3.4. Analog

Function No.

setting range

Function Description

Default value

setting type

f2-01

-999999 to

999999

0 V

output

Measured value at DAV 0V output.

Decimal point position depends on

Cf-01.

f2-02

-999999 to

999999

10 V

output

Measured value at DAV 10V output.

Decimal point position depends on

Cf-01.

1000

f2-03

-999999 to

999999

4 mA

output

Measured value at DAI 4 mA output.

Decimal point position depends on

Cf-01.

f2-04

-999999 to

999999

20 mA

output

Measured value at DAI 20 mA output.

Decimal point position depends on

Cf-01.

1000

8.3.5. Serial Communication

Function No.

Setting range

Function Description

Default value

Setting type

f3-01

2400 to

38400

Baud rate

2400

: 2400 bps

19200

: 19200 bps

4800

: 4800 bps

38400

: 38400 bps

9600

: 9600 bps

2400

f3-02

7 to 8

Data bit

length

:7 bits

:8 bits

f3-03

0 to 2

Parity

:None

Odd

Even

f3-04

1 to 2

Stop bit

:1 bit

:2 bits

f3-05

1 to 2

Terminator

:CRLF

:CR

f3-06

1 to 6

Output

mode

Stream mode

Manual print mode

Auto print mode (Outputs data once

when the measured value exceeds

the zero range and is stabilized for

the first time.)

Auto print mode (Outputs data each

time the measured value exceeds

the zero range and is stabilized.)

Command mode

Jet stream mode (Outputs data at

each sampling, depending on the

baud rate.)

f3-07

00 to 99

Instrument

No.

ID that is added to the serial output

When

0.0

, the ID is not added.

8.3.6. Unit

Function No

Setting

range

Function Description

Default value

Setting type

f4-00

0 to 4

Unit

: Specify the unit character

(f4-01 to f4-05)

: kg

: t

:Ib

f4-01

f4-02

f4-03

f4-04

f4-05

00 to 7F

Unit character 1

Unit character 2

Unit character 3

Unit character 4

Unit character 5

Unit character added to the serial output.

Set using the hexadecimal ASCII code.

: none

(

Hexadecimal

)

Measurement

mode

Measuring

Example of

the specified value

1 2

7. CALIBRATION 2
8. FUNCTION MODE 2

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