Siemens ST PCS 7 manual DI digital input modules, 11/14

© Siemens AG 2007

Process I/O

ET 200M distributed I/O

DI - digital input modules

■Overview ■Selection and Ordering Data Order No.

The digital input modules described here break down into

•simple signal modules for direct and alternating voltage, and

•modules with diagnostics capability that automatically output a corresponding message to the operator system in the event of a fault.

11

SM 321 for floating contacts (supply with DC voltage)

16 inputs, 24 V DC6ES7 321-1BH02-0AA0 Redundant design possible

(module redundancy)

•Electrically isolated in groups of 16

•Front connector required: 20-contact

16 inputs, 24 V DC 6ES7 321-1BH50-0AA0

•Electrically isolated in groups of 16; active low

•Front connector required: 20-contact

16 inputs, 24 V DC, high-speed 6ES7 321-1BH10-0AA0

•Electrically isolated in groups of 16

•0.05 ms input delay

•Front connector required: 20-contact

32 inputs, 24 V DC	6ES7 321-1BL00-0AA0
Redundant design possible
(module redundancy)

•Electrically isolated in groups of 16

•Front connector required: 40-contact

16 inputs, 48 to 125 V DC 6ES7 321-1CH20-0AA0 B)

•Electrically isolated in groups of 8

•Front connector required: 20-contact

SM 321 for floating contacts (supply with DC/AC voltage)
16 inputs, 24 to 48 V AC/DC	6ES7 321-1CH00-0AA0	B)

•Electrically isolated in groups of 1

•Front connector required: 40-contact

SM 321 for floating contacts (supply with AC voltage)
32 inputs, 120 V AC	6ES7 321-1EL00-0AA0	B)

•Electrically isolated in groups of 8

•Front connector required: 40-contact

8 inputs, 120/230 V AC	6ES7 321-1FF01-0AA0	B)
Redundant design possible
(module redundancy)

•Electrically isolated in groups of 2

•Front connector required: 20-contact

16 inputs, 120/230 V AC 6ES7 321-1FH00-0AA0 B)

•Electrically isolated in groups of 4

•Front connector required: 20-contact

B) Subject to export regulations: AL: N, ECCN: EAR99H

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Siemens ST PCS 7 · November 2007