USER HANDBOOK 1.2 | ECC DIO / ECC AIO
Berghof Automation GmbH | Harretstrasse 1 | 72800 Eningen | www.berghof.com
250000600_ECC-DIO-AIO_Anwenderhandbuch_EN.docx
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Operating mode: temperature inputs AI-PT
Feature
Value
Description
Connections per input
–
Sensor connection between AI (U/T) and AGND
Possible sensors
PT100 and PT1000
acc. to EN 60751
Accuracy class AA, A, B and C platinum sensors
may be used; recommendation: B or C
Measuring range
–40 to +200 °C
–
Measuring current
(RMS)
0.3 mA
–
Conversion time
250 ms
–
Max. errors at 25 °C
±2100 ppm (±0.5 °C)
–
Temperature
coefficient
±50 ppm/K
(±0.012 °C/K)
–
Digital resolution
24 bit
–
Data format in the user
program
2 × 32 bit real
(floating-
point number) in Ohms (Ω) and degrees
Celsius (°C)
Linearisation
–
The value in degrees Celsius is calculated from the
resistance value and linearised (3
rd
degree
polynomial)
Input type
–
2-wire measurement or 3-wire measurement
Reference potential
AGND
–
Dynamic characteristics
Analogue filtering
Second-grade low-
pass filter; time
constant T = approx.
500 µs
–
Greatest temporary
deviation during
electrical error testing
according to
IEC 61131-2
0.5% of measuring
range
–