Digital input module Siemens model 6AG12211BH322XB0

Technical specifications

Product type designation

SM 1221, DI 16x24 V DC

Rated value (DC)

24 V

permissible range, lower limit (DC)

20.4 V

permissible range, upper limit (DC)

28.8 V

Number of digital inputs

16

IP degree of protection

IP20

Fall height, max.

0.3 m; five times, in product package

max.

70 °C; = Tmax; Tmax > +60 °C number of simultaneously activated inputs 8 (no adjacent points) for horizontal mounting position

Width

45 mm

Height

100 mm

Depth

75 mm

based on

6ES7221-1BH32-0XB0

from backplane bus 5 V DC, max.

130 mA

from load voltage L+ (without load), max.

4 mA; per channel

present

Yes

Power loss, typ.

2.5 W

in groups of

4

Input characteristic curve in accordance with IEC 61131, type 1

Yes

up to 40 °C, max.

16

up to 50 °C, max.

16

for signal "0"

5 V DC at 1 mA

for signal "1"

15 V DC at 2.5 mA

for signal "0", max. (permissible quiescent current)

1 mA

for signal "1", min.

2.5 mA

for signal "1", typ.

4 mA

parameterizable

Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four

shielded, max.

500 m

unshielded, max.

300 m

Diagnostic alarm

Yes

for status of the inputs

Yes

between the channels, in groups of

4

environmental product declaration

Yes

global warming potential, (total) [CO2 eq]

123 kg

global warming potential, (during production) [CO2 eq]

12.1 kg

global warming potential, (during operation) [CO2 eq]

111 kg

global warming potential, (after end of life cycle) [CO2 eq]

-0.434 kg

Documents / datasheets

Source reviewed: 2026-10-24

Description

Digital input module Siemens part number 6AG12211BH322XB0; Rated value (DC): 24 V; permissible range, lower limit (DC): 20.4 V; permissible range, upper limit (DC): 28.8 V. Technical specifications, condition and supply feasibility are checked before ordering.