Siemens SIMATIC ET 200S Manual page 503

Analog Value Formation
Measurement principle
Integration / conversion
time / resolution per chan-
nel:
•
Integration time
selectable
•
Interference frequency
suppression in Hz
•
Integration time in ms
•
Basic conversion time
incl. integration time in
ms
•
Additional conversion
time for wire break
diagnostics in ms
•
Cycle time in ms
•
Resolution (incl.
overshoot range)
Interference Suppression, Error Limits
Interference voltage sup-
pression for f= n x
(f11 %), (f1 = interference
frequency)
•
Common mode
interference (U )
SS
•
Common mode
interference
(peak value of
interference < rated
value of the input range)
Crosstalk between inputs
Operational error limit for
80 mV (across complete
temperature range, in rela-
tion to input range)
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
integrating
Yes
60 50
16.7 20
66 80
5 5
Number of active
channels per
module x conversion
time
15 bits + sign
min. 90 dB
min. 70 dB
min. --50 dB
0.1 %
Analog Electronic Modules
Operational error limit for
thermocouple (across com-
plete temperature range, in
1)
relation to input range)
Operational error limit for
thermocouple Type C
(across complete tempera-
ture range, in relation to in-
1)
put range)
Basic error limit for 80 mV
(operational error limit at
25_C, related to the input
range)
Basic error limit for thermo-
couples (operational error
limit at 25_C, related to the
1)
input range)
Basic error limit for thermo-
couple Type C (operational
error limit at 25_C, related
1)
to the input range)
Temperature error (in rela-
tion to input range)
Linearity error (relative to
the input range)
Repetition accuracy
(in transient state at 25_C,
relative to input range)
Total errors limits when us-
ing internal compensation
•
Operational error limit
(over complete
temperature range in
static thermal state,
ambient temperature
fluctuation
2)
< 0.3 K/min)
•
Basic error limit
(operational error limit at
25 _C in static thermal
state, ambient
temperature fluctuation
3)
< 0.3 K/min)
1.5 K
7 K
0.05 %
1 K
5 K
0.005 %/K
0.01 %
0.05 %
2.5 K
1.5 K
12-97