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II - DCE FEL ČVUT v Praze

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SIMATIC S7 Ex Analog Modules<br />

Analog Output SM 332; AO 4 x 0/4...20 mA<br />

Dimensions and Weight<br />

Dimensions W x H x D (mm) 40 x 125 x 120<br />

Weight<br />

Module-specific data<br />

approx. 280 g<br />

Number of outputs 4<br />

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

Type of protection PTB [EEx ib] <strong>II</strong>C<br />

(see Appendix A)<br />

to EN 50020<br />

Test number Ex-96.D.2026 X<br />

Type of protection FM CL I, DIV 2,<br />

(see Appendix B)<br />

Voltages, currents, potentials<br />

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

Bus power supply<br />

5 V DC<br />

Rated load voltage L+ 24 V DC<br />

Reverse voltage protection yes<br />

Isolation<br />

Between channels and<br />

backplane bus<br />

yes<br />

Between channels and load<br />

voltage L+<br />

yes<br />

between channels yes<br />

Between backplane bus<br />

and load voltage L+<br />

yes<br />

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

from hazardous area<br />

Between channels and 60 V DC<br />

backplane bus<br />

30 V AC<br />

Between channels and load 60 V DC<br />

voltage L+<br />

30 V AC<br />

between channels 60 V DC<br />

30 V AC<br />

Between backplane bus 60 V DC<br />

and load voltage L+ 30 V AC<br />

3-72<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 load<br />

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 bus<br />

and load voltage L+<br />

Insulation tested<br />

Channels with respect to<br />

backplane bus and load<br />

voltage L+<br />

Channels among each<br />

other<br />

Backplane bus with respect<br />

to load voltage L+<br />

Current input<br />

from backplane bus<br />

From load voltage L+<br />

(at rated data)<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. 180 mA<br />

Module power loss typical 4 W<br />

Analog value formation<br />

Resolution (incl. overrange) 15 Bit<br />

Cycle time (all channels)<br />

Transient recovery time<br />

9.5 ms<br />

for resistive load 0.2 ms<br />

for capacitive load 0.5 ms<br />

for inductive load 0.2 ms<br />

Substitute values switchable yes, configurable<br />

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

C79000-G7076-C152-04

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