Mitsubishi Electronics AJ65SBT-64AD User Manual download pdf (Page 20)

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MELSEC-A

3 SPECIFICATION

3.3.2 Current input characteristics

The current input characteristic graph is shown below.

4095

4000

2000

-2000

-4000

-30 -20 -10 0 10 20 30

Analog input current (mA)

Analog input

parcitcal value

-96

Digital output value

Number

Analog Input Range

Setting

Offset

Value

Gain

Value

Digital Output

Value*

Maximum

Resolution

1) 0 to 20mA 0mA 20mA 5µA

2) 4 to 20mA 4mA 20mA

—

User range setting 3

(0 to 20mA)

0mA 20mA

0 to 4000

4µA

Fig. 3.2 Current Input Characteristic

POINT

(1) Do not input more than ±30mA. A breakdown may result due to heat increase.

(2) If the analog input provided corresponds to the digital output value* beyond its

range, the digital output value is fixed to the maximum or minimum.

For 0 to 4000, the digital output value is within the range -96 to 4095.

(3) Within the analog input and digital output scopes of each input range, the

maximum resolution and accuracy are within the performance specification

range. Outside those scopes, however, they may not fall within the performance

specification range. (Avoid using the dotted line part in Fig. 3.2.)

(4) Set the offset and gain values of the user range setting within the range

satisfying the following conditions.

(a) Setting range when user range setting 3 is selected: 0 to 20mA

(b) (Gain value) > (Offset value)

If you attempt to make setting outside the setting range of (a), the "RUN" LED

flickers at 0.5s intervals.

Set the values within the setting range.

If you attempt to make setting outside the setting range of (b), the "RUN" LED

flickers at 0.5s intervals.

Make setting again.

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Mitsubishi Electronics AJ65SBT-64AD User Manual Page 20

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