Siemens SIMATIC ET 200S Manual page 455

Analog Value Formation
Measurement principle
Integration and cycle time /
resolution per channel
•
Integration time
selectable
•
Interference frequency
suppression in Hz
•
Integration time in ms
•
Conversion time in ms
-- 1 channel per
module active
-- 2 channels active
per module
•
Cycle time in ms
-- 1 channel per
module active
-- 2 channels active
per module
•
Resolution (incl.
overshoot range)
Interference Suppression, Error Limits
Interference voltage
suppression for
f= n x (f1¦ 0.5%),
(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 limits
(in the entire temperature
range, relative to the input
1
range )
Operational error limits
(across complete
temperature range, in
relation to input range;
calibration blocked)
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Integrating
Yes
60 50 no
16,67 20 7,5
25 30 10
58,3 70 26
75 90 30
175 210 78
10 V/ 15 Bit +VZ
5 V/ 15 Bit + VZ
1 to 5 V/15 bits
min. 100 dB
min. 90 dB
min. --100 dB
0.1 %
0.5 %
Analog Electronic Modules
Basic error limit (operational
error limit at 25_C, relative
to input range; calibration
1
enabled )
Temperature error (based
on input range; calibration
1
enabled )
Temperature error (in
relation to input range;
calibration blocked)
Linearity error (relative to
the input range)
Repetition accuracy
(in transient state at 25 _C,
relative to input range)
Data for selection of the sensor
Input range (rated
value)/input resistance
•
Voltage
Permitted continuous input
voltage (destruction limit)
Smoothing of measured
values
Level
weak
medium
strong
1)
When configuring modules the runtime
calibration can be enabled to compensate for
component changes resulting from changes in
the ambient temperature. The update of new
data is delayed by 250 ms during the
calibration interval. A calibration is conducted
at every change of 5
temperature.
0.05 %
0.003 %/K
0.015 %/K
0.03 %
0.01 %
10 V/min. 1 MΩ
5 V/min. 1 MΩ
1 to 5 V/min.1 MΩ
35 V continuous,
75 V for max. 1 ms
Yes, configurable in
4 stages by digital
filtering
Time constant
No 1 x cycle time
4 x cycle time
32 x cycle time
64 x cycle time
°C in the ambient
12-49