Technical specifications
● From backplane bus
Max. 120 mA
● From load voltage L+
(supply current of all connected transducers)
Typ. 20 mA per transducer
Power loss of the module Approx. 1.5 W
Analog value formation
Measuring principle SIGMA-DELTA
Integration time/
interference frequency suppression (per
channel)
60 Hz 50 Hz 10 Hz
● Configurable
Yes Yes Yes
● Integration time in ms
16.6 20 100
● Basic conversion time including
integration time in ms (per channel)
55 65 305
● Basic execution time of the module
(all channels enabled) in ms
440 520 2440
● Resolution in bits + sign (including
overrange)
15 + sign 15 + sign 15 + sign
● Smoothing of the measured values
Yes, assignable in 4 levels:
Level:
None
Weak
Medium
Strong
Time constant:
1 x cycle time *
4 x cycle time *
32 x cycle time *
64 x cycle time *
Interference suppression, error limits
Interference voltage suppression for f = n x (f1 ± 1 %), (f1 = interference frequency)
● Common-mode interference (only possible with 4-wire
transducers
(Ucm < 60 V AC)
> 100 dB
● Seriesmode interference (peak value of disturbance <
nominal value of input range)
> 40 dB
Crosstalk attenuation between inputs (U
ISO
< 60 V) > 70 dB
Operating error ± 0.15 %
Basic error ± 0.1 %
Temperature error (relative to input range) ± 0.001%/K
Linearity error (relative to input range) ± 0.01 %
Repeatability (in steady-state condition at 25 ℃, relative to input
range)
± 0.1 %
Status, interrupts, diagnostics
Status display No
Group error display (SF LED) Yes
Diagnostic interrupts Configurable
Diagnostic functions Configurable
Characteristics of the transducer supply
ET 200PA SMART I/O modules
10.4 Analog input modules
ET 200PA SMART
172 Operating Instructions, 06/2019, A5E34192013-AB
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