Siemens SIMATIC ET 200S Manual page 459

Analog Value Formation
Measurement principle
Cycle time/resolution:
•
Conversion time in ms
(per channel)
•
Cycle time in ms
(per module)
•
Resolution (incl.
overshoot range)
Interference Suppression, Error Limits
•
Commonmode
interference
(U < 100 V )
cm SS
Crosstalk between inputs
Operational error limits
(across complete tempera-
ture range, in relation to
input range)
Basic error limit (operational
error limit at 25 _C, related
to the input range)
Temperature error
(in relation to input range)
Linearity error (relative to
the input range)
Repetition accuracy
(in transient state at 25 _C,
relative to input range)
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Momentary value
encryption
0.1
1
 10 V/ 13 Bit + VZ
 5 V/13 Bit + VZ
 2.5 V/13 Bit + VZ
1 to 5 V/13 bits
> 70 dB
> 50 dB
 0.3 %
0.2 %
0.01 %/K
0.01 %
0.05 %
Analog Electronic Modules
Data for selection of the sensor
Input ranges (rated
value)/input resistance
•
Voltage
Permitted input voltage for
voltage input (destruction
limit)
Connection of signal
generators
•
With voltage measuring
Smoothing of measured
values
Level
weak
medium
strong
1)
DPV1 only
2)
Configuration error
Violation of lower limit value
Violation of upper limit value
Open circuit (1 to 5 V only)
Process interrupt lost
10 V/min. 100 kΩ
5 V/min. 100 kΩ
2.5 V/min. 100 kΩ
1 -- 5 V/min. 100 kΩ
50 V continuous,
100 V for max. 1 ms
(sampling ratio 1:20)
possible
Yes, configurable in
4 stages by digital
filtering
Time constant
No 1 x cycle time
64 x cycle time
128 x cycle time
512 x cycle time
12-53