6ES7321-1CH00-0AA0

Overview

• Model: 6ES7321-1CH00-0AA0

• Type: Digital Input Module (SM 321)

• Number of Digital Inputs: 16

• Input Characteristic Curve: IEC 61131, Type 1 compliant

Electrical Specification

• Input Voltage:

  • DC: 24 V (rated), also supports 48 V DC

  • AC: 24 V AC or 48 V AC (0–63 Hz)

• Signal Levels:

  • Signal "0": -5 V AC to +5 V AC

  • Signal "1": 14 V AC to 60 V AC

• Input Current:

  • Signal "0" min.: -1 mA

  • Signal "0" max.: 1 mA (quiescent)

  • Signal "1" typ.: 2.7 mA

• Input Delay (non-parameterizable):

  • 0 → 1: 16 ms (min/max)

  • 1 → 0: 16 ms (max)

• Isolation: Tested with 1500 V AC

Performance Specification

• Number of Simultaneously Controllable Inputs:

  • Horizontal installation: up to 16 (≤40 °C and ≤60 °C)

  • Vertical installation: up to 16 (≤40 °C)

Mechanical Specification

• Connection Method: 40-pin front connector required

• Dimensions:

  • Width: 40 mm

  • Height: 125 mm

  • Depth: 120 mm

• Weight: Approx. 260 g

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