6ES7321-7EH00-0AB0

Product Overview

SIMATIC S7/PCS 7 SM 321 Digital Input, 16 DI
A digital input module for use in SIMATIC S7/PCS 7 systems.

Technical Specifications

• Supply voltage

  • Load voltage L+

  • Rated value: 24 V DC

  • Permissible range, lower limit: 24 V DC

  • Permissible range, upper limit: 125 V DC

  • Reverse polarity protection: Yes

• Input current

  • From backplane bus 5 V DC, max. 90 mA

• Power loss

  • Typical: 2 W at V_in = 24 V DC

• Digital inputs

  • Horizontal installation up to 60 °C: max. 16 at V_in = 100 V DC

  • Vertical installation up to 40 °C: max. 16 at V_in = 100 V DC

  • Number of digital inputs: 16

  • Input characteristic curve in accordance with IEC 61131, type 1: Yes

  • Number of simultaneously controllable inputs:

• Input voltage

  • Rated value: 24 V DC (range 24–125 V DC)

  • Signal "0": -146 to 5 V

  • Signal "1": 15 to 146 V