Siemens SIMATIC ET 200S - Page 492

Analog Electronic Modules
12-86
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Analog Value Formation
Measurement principle integrating (Sigma-
Delta)
Integration and cycle time /
resolution per channel:
• Integration time
selectable
Yes
• Interference frequency
suppression in Hz
60 50
• Integrationtimeinms 16.7 20
• Basic conversion time
incl. integration time in
ms
50 60
• Additional conversion
time for wire break
diagnostics in ms
55
• Additional conversion
time for wire
compensation with
3-wire connection in ms
50 60
• Cycletimeinms Number of active
channels per
module x conversion
time
• Resolution (incl.
overshoot range)
Pt100; Ni100; Ni120;
Pt200; Ni200; Pt500;
Ni500; Pt1000;
Ni1000; Cu10 /
15 bits + sign
150 Ω; 300 Ω;
600 Ω; 3000 Ω; /
15 bits
PTC
1)
/1bit
Interference Suppression, Error Limits
Interference voltage sup-
pression for f= n x (f11%),
(f1 = interference frequen-
cy)
• Common mode
interference (U
SS
)
• Common mode
interference
(peak value of
interference < rated
value of the input range)
min. 90 dB
min. 70 dB
Crosstalk between inputs min. --50 dB
Operational error limits
(across the temperature
range, in relation to input
range)
• Resistive encoder 0.1 %
• Pt100, Pt200, Pt500,
Pt1000 Standard
1.0 K
• Pt100, Pt200, Pt500,
Pt1000 Climatic
0.25 K
• Ni100, Ni120, Ni200,
Ni500, Ni 1000
Standard and Climatic
0.4 K
• Cu10 1.5 K
Basic error limit for
resistive sensor (operation-
al error limit at 25 _C, re-
lated to the input range)
• Resistive encoder 0.05 %
• Pt100, Pt200, Pt500,
Pt1000 Standard
0.6 K
• Pt100, Pt200, Pt500,
Pt1000 Climatic
0.13 K
• Ni100, Ni120, Ni200,
Ni500, Ni1000 Standard
and Climatic
0.2 K
• Cu10 1.0 K
Temperature error (in rela-
tion to input range)
0.0009 %/K
Linearity error (relative to
the input range)
0.01 %
Repetition accuracy
(in transient state at 25_C,
relative to input range)
0.05 %