Digital Signal Modules - Siemens SIMATIC S7-1200 Manual

Technical specifications
A.4 Digital signal modules
A.4

Digital signal modules

The following specifications provide a sample of the digital SM modules available for S7-
1200. Refer to the S7-1200 system manual for more information.
Sample SM 1221 digital input signal modules
General
Number of inputs
(Number of inputs on simultaneously)
Dimensions (W x H x D)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
Digital inputs
Input type
Rated voltage
Continuous permissible voltage
Surge voltage
Logic 1 signal (min.)
Logic 0 signal (max.)
Isolation (field side to logic)
Isolation groups
Filter times (ms)
Cable length (meters)
SM 1221 DI 8 x 24 VDC
106
SM 1221 DI 8x24VDC
8
(8)
45 x 100 x 75 (mm)
170 grams
1.5 W
105 mA
4 mA / input used
Description
Sink/Source (IEC Type 1 sink)
24 VDC at 4 mA, nominal
30 VDC, max.
35 VDC for 0.5 sec.
15 VDC at 2.5 mA
5 VDC at 1 mA
500 VAC for 1 minute
DI 8x24VDC: 2; DI 16x24VDC: 4
0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8
(selectable in groups of 4)
500 shielded, 300 unshielded
SM 1221 DI 16 x 24 VDC
SM 1221 DI 16x24VDC
16
(16)
45 x 100 x 75 (mm)
210 grams
2.5 W
130 mA
4 mA / input used
Manual, 11/2009, A5E02486774-01
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