Siemens SIMATIC ET 200eco PN, Operating Instructions Manual

Page: 157 / 278

NOTE
The accuracy information is valid for static thermal states and changes in ambient temperat­
ure < 1 K/h.
The I/O device achieves the highest accuracy with the 4-wire connection system (see technic­
al specifications above).
Although the 3-wire connection system compensates for the missing wire, the accuracy is
impaired. With the 2-wire connection system, the line resistances considerably impair the
accuracy.
In the last two cases this impairment is not determinable.
NOTE
With the 3-wire connection system, the compensation of the missing cable is only ensured if
all three cores in the cable have the same length and cross-section.
See also
Response times for analog input device and output device (Page 259)
10.1.2 8 AI RTD/TC 8×M12 I/O device
Article number
6ES7144-6KD50-0AB0
Properties
The electronic module 8 AI RTD/TC 8×M12 has the properties listed below:
• 8 freely parameterizable inputs:
– Resistance (2-/3-/4-wire transmitter)
– Thermoresistor (2-/3-/4-conductor connection system)
– Thermocouple or ±80 mV
• Input ranges:
– Voltage measurement: ±80 mV; resolution 15 bit + sign
– Resistance measurement: 150 Ω, 300 Ω, 600 Ω, 3000 Ω; resolution 15 bits
– Resistance thermometer: Pt100, Ni100, Ni120, Pt200, Ni200, Pt500, Ni500, Pt1000,
Ni1000; resolution 15 bits + sign
– Thermocouple elements: E, J, K, N; resolution 15 bits + sign
• Dimensions 60 x 175 mm
158
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
I/O device analog input/analog output
10.1 I/O device analog input