Siemens S7-1200 - Digital Signal Modules (Sms); SM 1221 Digital Input Specifications

Technical specifications
A.7 Digital signal modules (SMs)
S7-1200 Programmable controller
892 System Manual, 03/2014, A5E02486680-AG
Pin
X10
X11
X12 (gold)
X13
14
DI a.7
--
--
DQ a.5
15
DI b.0
--
--
DQ a.6
16
DI b.1
--
--
DQ a.7
17
--
--
--
DQ b.0
18
--
--
--
DQ b.1
Note
Unused analog
inputs should be shorted.
A.7
Digital signal modules (SMs)
A.7.1
SM 1221 digital input specifications
Table A- 106 General specifications
Model
SM 1221 DI 8 x 24 VDC
SM 1221 DI 16 x 24 VDC
Order number
6ES7 221-1BF32-0XB0
6ES7 221-1BH32-0XB0
Dimensions W x H x D (mm)
45 x 100 x 75
45 x 100 x 75
Weight
170 grams
210 grams
Power dissipation
1.5 W
2.5 W
Current consumption (SM Bus)
105 mA
130 mA
Current consumption (24 VDC)
4 mA / input used
4 mA / input used
Table A- 107 Digital inputs
Model
SM 1221 DI 8 x 24 VDC
SM 1221 DI 16 x 24 VDC
Number of inputs
8
16
Type Sink/Source (IEC Type 1 sink) Sink/Source (IEC Type 1 sink)
Rated voltage
24 VDC at 4 mA, nominal
24 VDC at 4 mA, nominal
Continuous permissible voltage
30 VDC, max.
30 VDC, max.
Surge voltage
35 VDC for 0.5 sec.
35 VDC for 0.5 sec.
Logic 1 signal (min.)
15 VDC at 2.5 mA
15 VDC at 2.5 mA
Logic 0 signal (max.)
5 VDC at 1 mA
5 VDC at 1 mA
Isolation (field side to logic)
500 VAC for 1 minute
500 VAC for 1 minute
Isolation groups
2
4