Manufacturer: SIEMENS
Family: S7-1221
Type: Digital input module
Model: SM 1221 DC
MRN: 6ES7221-1BF30-0XB0
Supply voltage: 24 V DC
Input current from backplane bus 5 V DC: 105 mA; per channel
Input voltage: 24 V DC
-for signal “0”: 5 V DC
-for signal “1”: 15 V DC
Input delay: 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
Digital inputs: 8
Power loss: 1.5 W
Protection: IP20
Condition: Used
Weight: 0.17 Kg