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II - DCE FEL ČVUT v Praze

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Digital input SM 321; DI 4 x NAMUR<br />

Dimensions and Weight<br />

Dimensions<br />

W x H x D (mm)<br />

40 x 125 x 120<br />

Weight approx. 230 g<br />

Module-specific data<br />

Number of inputs 4<br />

Line length, shielded max. 200 m<br />

Type of protection PTB<br />

(see Appendix A)<br />

[EEx ib] <strong>II</strong>C<br />

acc. to EN 50020<br />

Test number Ex-96.D.2094 X<br />

Type of protection FM<br />

(see Appendix B)<br />

Voltages, currents, potentials<br />

Bus power supply<br />

Rated load voltage L+<br />

Reverse voltage<br />

protection<br />

Number of inputs which<br />

can be activated<br />

simultaneously<br />

CL I, DIV 2,<br />

GP A, B, C, D T4<br />

DC 5 V<br />

24 V DC<br />

yes<br />

Galvanic isolation<br />

Between channels and<br />

backplane bus<br />

yes<br />

Between channels and<br />

load voltage L+<br />

yes<br />

Between channels yes<br />

Between backplane<br />

bus and load voltage<br />

L+<br />

yes<br />

Permissible difference in potential (UISO) of signals<br />

from hazardous area<br />

Between channels and<br />

backplane bus<br />

Between channels and<br />

load voltage L+<br />

I/O Modules with Intrinsically-Safe Signals<br />

C79000-G7076-C152-04<br />

4<br />

60 V DC<br />

30 V AC<br />

60 V DC<br />

30 V AC<br />

Between channels 60 V DC<br />

30 V AC<br />

Between backplane<br />

bus and load voltage<br />

L+<br />

60 V DC<br />

30 V AC<br />

Voltages, currents, potentials continued<br />

Permissible difference in potential (UISO) for signals<br />

from non-hazardous area<br />

Between channels and<br />

backplane bus<br />

Between channels and<br />

load voltage L+<br />

400 V DC<br />

250 V AC<br />

400 V DC<br />

250 V AC<br />

Between channels 400 V DC<br />

250 V AC<br />

Between backplane<br />

bus and load voltage<br />

L+<br />

Insulation tested<br />

Channels with respect<br />

to backplane bus and<br />

load voltage L+<br />

Channels among each<br />

other<br />

Between load voltage<br />

L+ and backplane bus<br />

Current input<br />

From backplane bus<br />

From load voltage L+<br />

SIMATIC S7 Ex Digital Modules<br />

75 V DC<br />

60 V AC<br />

with 1500 V AC<br />

with 1500 V AC<br />

with 500 V DC<br />

max. 80 mA<br />

max. 50 mA<br />

Module power loss typical 1.1 W<br />

Status, interrupts, diagnostics<br />

Status indication<br />

Inputs green LED per channel<br />

Interrupts<br />

Hardware interrupt configurable<br />

Diagnostic interrupt configurable<br />

Diagnostic functions<br />

Group fault indication red LED (SF)<br />

Channel fault<br />

indication<br />

red LED (F) per channel<br />

Diagnostic functions<br />

readout<br />

possible<br />

Monitoring for<br />

Short-circuit I > 8.5 mA<br />

Wire break I 0.1 mA<br />

2-5

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