A&D AD-4430B Spezifikationen PDF herunterladen (Seite 31)

AD-4430B - 29 -

5.3.8. Error Codes For The Calibration

When an error occurs during calibration, the error number is displayed.

If calibration is finished without removing the error, the setting values will be restored to the state

before calibration.

Calibration errors and remedies

Error No. Description Treatment

C Er1

The display resolution (weighing

capacity / minimum division)

exceeds the specified value.

Make the minimum division greater or make the

weighing capacity smaller. The specified value

depends on specifications of the weighing system.

C Er2

Voltage at zero calibration

exceeds in the positive direction.

C Er3

Voltage at zero calibration

exceeds in the negative direction.

Check the load cell rating and connection. When

nothing is wrong with the rating and connection,

adjust the load cell output as described in the next

section. When the load cell or A/D converter may

be the cause of error, confirm this by using the

check mode.

C Er4

The value of the calibration weight

exceeds the weighing capacity.

C Er5

The value of the calibration weight

is less than the minimum division.

Use an appropriate calibration weight and

calibrate again.

C Er6

The load cell sensitivity is not

sufficient.

Use a load cell with higher sensitivity or make

the minimum division greater.

C Er7

Voltage at span calibration is less

than voltage at the zero point.

Check the load cell connection.

C Er8

The load cell output voltage is too

high when the load of the

weighing capacity is placed.

Use a load cell with a greater rating or make the

weighing capacity smaller.

5.3.9. Adjustment Of The Loadcell Output

Add a resistor as shown below to adjust the load cell output.

Use a resistor with a high resistance value and a low temperature coefficient.

Illustration 10 Load cell output adjustment

Because the zero point of the module has a wide adjustable range, as long as there is no

problem with a load cell, correcting an output by the module is hardly ever required.

Before an output correction is carried out, confirm load cells (deformation, wiring mistakes,

contact with anything, or model selection etc.) and connections.

"C Er2"

When exceeding in the positive direction.

SIG+

SIG-

Resister added

"C Er3"

When exceeding in the negative direction.

SIG+

SIG-

Resister added

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