II - DCE FEL ČVUT v Praze
II - DCE FEL ČVUT v Praze
II - DCE FEL ČVUT v Praze
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Analog Input SM 331; AI 8 x TC/4 x RTD<br />
Dimensions and Weight<br />
Dimensions W x H x D (mm) 40 x 125 x 120<br />
Weight approx. 210 g<br />
Module-specific data<br />
Number of inputs<br />
8<br />
Resistance sensor 4<br />
Line length, shielded max. 200 m<br />
Type of protection PTB<br />
(see Appendix A)<br />
I/O Modules with Intrinsically-Safe Signals<br />
C79000-G7076-C152-04<br />
max. 50 m for<br />
voltage ranges<br />
80 mV<br />
and thermocouples<br />
[EEx ib] <strong>II</strong>C<br />
to EN 50020<br />
Test number Ex-96.D.2108 X<br />
Type of protection FM<br />
(see Appendix B)<br />
Voltages, currents, potentials<br />
CL I, DIV 2,<br />
GP A, B, C, D T4<br />
Bus power supply<br />
Isolation<br />
5 V DC<br />
Between channels and<br />
backplane bus<br />
yes<br />
between channels no<br />
Permissible difference in potential of signals from<br />
hazardous area<br />
between channels and<br />
backplane bus (UISO)<br />
between channels<br />
(UCM)<br />
Insulation tested<br />
Channels with respect to<br />
backplane bus<br />
Current input from backplane<br />
bus<br />
60 V DC<br />
30 V AC<br />
60 V DC<br />
30 V AC<br />
with 1500 V AC<br />
max. 120 mA<br />
Module power loss typical 0.6 W<br />
Permissible difference in potential of signals from<br />
non-hazardous area<br />
between channels and<br />
backplane bus (UISO)<br />
between channels<br />
(UCM)<br />
400 V DC<br />
250 V AC<br />
75 V DC<br />
60 V AC<br />
Safety data<br />
(refer to Certificate of Conformity in Appendix A)<br />
Type of protection to<br />
EN 50020<br />
[EEx ib] <strong>II</strong>C<br />
Maximum values per channel<br />
for thermocouples and thermal<br />
resistors<br />
U0 (no-load output<br />
voltage)<br />
max. 5.9 V<br />
I0 (short-circuit current) max. 28.8 mA<br />
P0 (load power) max. 41.4 mW<br />
L0 (permissible external<br />
inductance)<br />
max. 40 m<br />
C0 (permissible external<br />
capacitance)<br />
max. 60 F<br />
Um (error voltage) max. 60 V DC<br />
30 V AC<br />
Ta (permissible ambient<br />
temperature)<br />
max. 60C<br />
Connection of an active sensor with following<br />
maximum values Ui = 1.2 V<br />
Ii = 20 mA<br />
deviating from above-specified values<br />
L0 (permissible external<br />
inductance)<br />
max. 15 m<br />
C0 (permissible external<br />
capacitance)<br />
Analog value formation<br />
max. 17 F<br />
Measuring principle SIGMA-DELTA<br />
Integration time/conversion<br />
time/resolution (per channel)<br />
configurable<br />
Integration time in ms<br />
Basic conversion time =<br />
3 x integration time +<br />
transient recovery time<br />
optomultiplexer in ms<br />
Additional conversion<br />
time for wire break<br />
recognition in ms<br />
Resolution in bit (incl.<br />
overrange)<br />
Interference voltage<br />
rejection for interference<br />
frequency f1 in Hz<br />
SIMATIC S7 Ex Analog Modules<br />
yes<br />
2.5<br />
7.5<br />
+<br />
2.5<br />
yes<br />
162 /3<br />
50<br />
+<br />
2.5<br />
yes<br />
20<br />
60<br />
+<br />
2.5<br />
yes<br />
100<br />
300<br />
+<br />
2.5<br />
2.5 2.5 2.5 2.5<br />
9+<br />
sign<br />
12+<br />
sign<br />
12+<br />
sign<br />
15+<br />
sign<br />
400 60 50 10<br />
3-59
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