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
•
Cycle time in ms
•
Resolution (incl.
overshoot range)
Interference Suppression, Error Limits
Interference voltage sup-
pression for f= n x (f11%),
(f1 = interference frequen-
cy)
•
Common mode
interference (U
)
SS
•
Common mode
interference
(peak value of
interference < rated
value of the input range)
Crosstalk between inputs
Operational error limits
(across the temperature
range, in relation to input
range)
Basic error limit (operational
error limit at 25 _C, related
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)
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
integrating
Yes
60
50
16.7
20
110
130
Number of active
channels per
module x conversion
time
Pt100, Ni100/ 15 Bit
+ VZ
150 Ω/14 Bit/
300 Ω, 600 Ω/15 Bit
min. 90 dB
min. 70 dB
min. --50 dB
0.6 %
0.4 %
0.005 %/K
0.01 %
0.05 %
Analog Electronic Modules
Data for selection of the sensor
Input range (rated
value)/input resistance
•
Resistance
•
Resistive thermo-
meter
Permitted continuous input
voltage (destruction limit)
Connection of signal
generators
•
for measuring
resistance
--
2 and 3-wire
connection
--
4-wire connection
Characteristics linearization
Smoothing of measured
values
Level
weak
medium
strong
150 Ω/min. 2 MΩ
300 Ω/min. 2 MΩ
600 Ω/min. 2 MΩ
Pt100/min. 2 MΩ
Ni100/min. 2 MΩ
Max. 9 V
Yes, wire
resistances are also
measured, bridges
on T
R
Yes
Yes, configurable for
Pt100, Ni100
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
12-81