Siemens ET 200S Manual page 449

Analog Value Generation
Measuring principle
Integration and cycle time/
resolution per channel:
S
Integration time
parameterizable
S
Interference frequency
suppression in Hz
S
Integration time in
milliseconds
S
Conversion time in ms
S
Cycle time in ms
S
Resolution (including
overrange)
Suppression of Interference, Limits of Error
Interference voltage sup-
pression for f =
n x (f1"1%), (f1 = interfe-
rence frequency)
S
Series-mode
interference
(peak interference
value < rated value of
input range)
Crosstalk between the in-
puts
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Operational limit (in the en-
tire temperature range, with
Integrative
reference to the input
range)
Basic error limit (operational
limit at 25 _C with reference
Yes
to input range)
60 50
Temperature error (with re-
ference to the input range)
16.7 20
Linearity error (with refe-
rence to the input range)
55 65
Repeatability
(in steady state at 25 _C
Number of active
with reference to input
channels per
range)

module
conversion time

20 mA/13 bits +
Input range (rated
sign
value)/input resistance
4 to 20 mA/13 bits
S
Permitted input current
(destruction limit)
Smoothing of the measured
values
Min. 70 dB
Min. –50 dB
Analog Electronic Modules
Data for Selecting a Sensor
Current
Step
None
Weak
Medium
Strong
"0.6%
"0.4%
"0.005%/K
"0.01%
"0.05%
"20 mA/50Ω
4 to 20 mA/50 Ω
40 mA
Yes, parameteriza-
ble in 4 steps by
means of digital filte-
ring
Time constant
1 x cycle time
4 x cycle time
32 x cycle time
64 x cycle time
12-93