Digital Signal Modules (Sms); Sm 1221 Digital Input Specifications - Siemens SIMATIC S7 System Manual

A.3

Digital signal modules (SMs)

A.3.1

SM 1221 Digital Input Specifications

Technical Specifications
Model
Order number (MLFB)
General
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
Digital inputs
Number of inputs
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
Number of inputs on simultaneously
Cable length (meters)
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
SM 1221 DI 8x24VDC
6ES7 221-1BF30-0XB0
45 x 100 x 75
170 grams
1.5 W
105 mA
4 mA / input used
8
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
2
0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8 ms (selectable in groups of 4)
8
500 shielded, 300 unshielded
Technical specifications
A.3 Digital signal modules (SMs)
SM 1221 DI 16x24VDC
6ES7 221-1BH30-0XB0
210 grams
2.5 W
130 mA
4 mA / input used
16
4
16
299