Siemens Metro 21 M216KA Operator's Manual page 305

Analog value formation
Measurement principle
Integration and conversion time/
resolution per channel
Parameterized
Integration time in ms
Conversion time in ms
Cycle time in ms
Resolution (incl. overrange/rep-
resentation in two's complement)
0...600
Pt100 climatic
Pt100 standard
Ni100 standard
0...600
Pt100 climatic
Pt100 standard
Ni100 standard
Interference voltage suppres-
sion for interference fre-
quency f1 in Hz
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
SC Analog Electronic Modules – T echnical Data
integrative Input ranges (rated values)/input
resistance
yes
50 60
110 130
110 130
Permitted input voltage
for resistance measurement input
and constant current inputs/out-
puts (destruction limit)
S7 format
14 bits
Connection of sensors
0.1 C/digit
For resistance measurement
0.1 C/digit
with
0.1 C/digit
–
S5 format
13 bits
Characteristic curve linearization yes; parameterized
0.05 C/digit
–
0.5 C/digit
0.5 C/digit –
Temperature compensation
Smoothing of measured values
50 60
Sensor Selection Data
0...600
Pt100 (climatic; -120...+130 C) / >1 M
Pt100 (standard; -200...+850 C) / >1 M
Ni100 (standard; -60...+250 C) / >1 M
max.10 V perma-
nent;
25 V for max. 1 s
(pulse duty factor
1:20)
4-conductor connection yes; with compensa-
tion of the line re-
sistances
For Pt100 to DIN IEC 751
For Ni100 to DIN 43760
no
yes; set by parame-
ters in 4 steps by
digital filtering
Step Time constant
None 1x cycle time
Weak 8x cycle time
Medium 64x cycle time
Strong 128x cycle time
/ >1 M
12-49