Mitsubishi Electronics AJ65SBT-64AD user manual Current input characteristics, 0mA, 4mA

3 SPECIFICATION

3.3.2 Current input characteristics

The current input characteristic graph is shown below.

MELSEC-A

Digital output value

Analog input parcitcal value

4095

4000

2

2000

1

0

-96 4

-2000

-4000

-30	-20	-10	0	10	20	30
		Analog input current (mA)

Number	Analog Input Range	Offset	Gain	Digital Output	Maximum
	Setting	Value	Value	Value*	Resolution
1)	0 to 20mA	0mA	20mA		5µA
2)	4 to 20mA	4mA	20mA	0 to 4000
—	User range setting 3	0mA	20mA		4µA
	(0 to 20mA)

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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