SIEMENS SM 1221 DC DIGITAL INPUT MODULE “ S7-1200 FAMILY

The Siemens SM 1221 DC is a compact and robust digital input module, designed to deliver high-performance signal processing in industrial automation environments. As part of the trusted S7-1200 family, this module offers precision, flexibility, and reliable integration with Siemens controllers for various applications.

Manufacturer: SIEMENS
Family: S7-1200
Type: Digital Input Module
Model: SM 1221 DC
MRN: 6ES7221-1BF30-0XB0
E STAND: 01
Serial No.: ZVWDYYK000509

Technical Information

• Dimensions: Width 45 mm, Height 100 mm, Depth 75 mm
• Supply Voltage: 24 V DC
• Input Current from Backplane Bus 5 V DC: 105 mA per channel
• Input Voltage: 24 V DC
• Signal Level 0: 5 V DC
• Signal Level 1: 15 V DC
• Input Delay: 0.2 ms to 12.8 ms, selectable in groups of four
• Digital Inputs: 8 Channels
• Power Loss: 1.5 W
• Protection Class: IP20