Siemens Simatic S7-300 SM321 1P6ES7 321-1BL00-0AA0 digital 32x input module

Siemens Simatic S7-300 series I/O module for extending your connection capabilities.

Module's technical details:

• Number of inputs:
  • 32
• Load voltage L+/L1:
  • 24VDC (20.4...28.8VDC)
• Rated input voltage:
  • 24VDC
    • Signal in "1" state:
      • 13...30V
    • signal in "0" state:
      • -30...5V
• Electrical isolation to backplane bus:
  • Optocoupler in groups of 16
• Typical input current
  • At "1" signal:
    • 7mA
  • At "0" signal:
    • 0.5mA
• Input delay at nominal voltage:
  • 1,2...4,8ms
• Number of simultaneously controllable inputs:
  • Up to 40°C
    • 32
  • Up to 60°C
    • 16
• Connection of 2-wire BERO
  • Yes
    • Max permissible quiescent current:
      • 1.5mA
• Line length:
  • Unshielded:
    • 600m
  • Shielded:
    • 1000m
• Max current consumption:
  • From backplane bus:
    • 10mA
• Typical power loss
  • 6.5W
• Isolation tested at:
  • 500VDC

Download Siemens Simatic S7-300 series programmable logics technical datasheet