Siemens Simatic M7-400 Manual de usuario descargar pdf (Pagina 57)

SIMATIC S7-400

Digital modules

SM 421 digital input module

6/57

Siemens ST 70 · 2013

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Technical specifications (continued)

Input current

• for signal "0", max.

(permissible quiescent current)

1.3 mA 1mA 6 mA; AC: 6 mA; DC:

2 mA

• for signal "1", typ. 6 mA; 6 to 8 mA 7mA 2mA; 2 to 5 mA 10 mA; at 120 V:

10 mA AC,

1.8 mA DC; at 230 V:

14 mA AC, 2 mA DC

4 mA; 4 to 10 mA

Input delay

(for rated value of input voltage)

• for standard inputs

- Parameterizable Yes Yes

- Rated value

0.5 ms;

0.5 / 3 / 10 / 20 ms

Cable length

• Cable length, shielded, max. 1 000 m; 1000 m/

3 ms; 70 m/0.5 ms;

30 m/0.1 ms; 30 m/

0.05 ms

1 000 m 1 000 m 1 000 m 1 000 m

• Cable length unshielded, max.

600 m; 600 m: 3 ms;

50 m: 0.5 ms; 20 m:

0.1 ms; 20 m:

0.05 ms

600 m 600 m 600 m 600 m; 600 m:

3, 10, 20 ms; 100 m:

0.5 ms

Encoder

Connectable encoders

• 2-wire sensor Yes Yes Yes Yes Yes

- Permissible quiescent current

(2-wire sensor), max.

3mA 1.5 mA 1mA 5 mA; AC: 5 mA 0.5 mA; 0.5 to 2 mA

Interrupts/diagnostics/

status information

Alarms

• Diagnostic alarm Yes; Parameterizable Yes; Parameterizable

• Hardware interrupt

Yes; Parameterizable Yes; Parameterizable

Diagnostic messages

• Diagnostics Yes; internal/

external fault

Yes; internal/

external fault

Galvanic isolation

Galvanic isolation digital inputs

• between the channels, in groups of 8 32 8 4 1

• between the channels and the

backplane bus

Yes Yes Yes Yes Yes

Isolation

Isolation checked with 500 V DC 500 V DC 1500 V AC 1500 V AC 1500 V AC

Dimensions

Width 25 mm 25 mm 25 mm 25 mm 25 mm

Height

290 mm 290 mm 290 mm 290 mm 290 mm

Depth 210 mm 210 mm 210 mm 210 mm 210 mm

Weight

Weight, approx. 600 g 500 g 600 g 650 g 600 g

6ES7 421-7BH01-

0AB0

6ES7 421-1BL01-

0AA0

6ES7 421-1EL00-

0AA0

6ES7 421-1FH20-

0AA0

6ES7 421-7DH00-

0AB0

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Siemens Simatic M7-400 Manual de usuario Pagina 57

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