Technical Data of the Analog Inputs

Parameter		Value
Number of channels per module		4 individually configurable voltage or current inputs
Distribution of channels into groups		1 (4 channels per group)
Resolution
	Unipolar	Voltage: 0 V … +5 V; 0 V … + 10 V: 12 bits Current 0 mA … 20 mA; 4 mA … 20 mA: 12 bits
	Bipolar	Voltage -2.5 V … +2.5 V; -5 V … +5 V: 11 bits plus sign
Connection of the signals I0- to I3-		Terminals 3, 6, 9, 12
Connection of the signals I0+ to I3+		Terminals 2, 5, 8, 11
Input type		Differential
Galvanic isolation		No galvanic isolation between the inputs and the I/O bus
Common mode input range		Signal voltage plus common mode voltage must be within ± 12 V
Indication of the input signals		No
Channel input resistance		Voltage: >1 MW, current: ca. 250 W
Conversion error of the analog values caused by non-linearity, adjustment error at factory and resolution within the normal range		Typ.	± 0.5 % of full scale (voltage) ± 0.5 % of full scale (current 0…20 mA) ± 0.7 % of full scale (current 4…20 mA) at 25°C
		Max.	± 2 % of full scale (all ranges) at 0…60 °C or EMC disturbance
Time constant of the input filter		Voltage: 300 µs, current: 300 µs
Relationship between input signal and hex code		Table Measuring Ranges AX561 - Analog Input/Output Module
Analog to digital conversion time		Typ. 500 µs per channel
Unused inputs		Can be left open and should be configured as “unused”
Input data length		8 bytes
Overvoltage protection		Yes, up to 30 V DC only for voltage input
Max. cable length (conductor cross section > 0,14 mm²)
	Unshielded wire	10 m
	Shielded wire	100 m