Technical Data of the Analog Inputs

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
Electrical isolation		No electrical 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 MΩ, current: ca. 250 Ω
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 Analog Input Module AI561
Analog to digital conversion time		Typ. 500 µs per channel
Unused inputs		Can be left open and should be configured as “unused”
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