Siemens AS-i Slimline compact module, digital, A/B slave 4 DI/4 DQ Part number 3RK2400-2CE00-2AA2

Product Overview

The Siemens 3RK2400-2CE00-2AA2 is an AS-Interface (AS-i) SlimLine Compact digital I/O module (SC22.5), functioning as an A/B slave. It provides 4 digital inputs and 4 digital outputs (4 DI / 4 DQ), integrating AS-Interface network communication with standard sensor/actuator wiring — ideal for distributed I/O installations in control cabinets or machine automation systems.

Key Features

• AS-i SlimLine Compact digital I/O module, SC22.5 width
• A/B slave type (AS-Interface specification 3.0), profile S-7.A.7
• 4 digital inputs (for 2- or 3-wire sensors, PNP, type 2)
• 4 digital outputs, PNP transistor type, with built-in reverse-polarity, short-circuit, and overload protection
• Switchable sensor-supply: can supply sensor voltage via AS-Interface bus or external auxiliary supply (U_AUX)
• Screw-terminal connections for reliable wiring
• Compact module width 22.5 mm — space-saving for control cabinets
• LED status indicators for inputs/outputs and AS-Interface communication / supply status
• IP20 protection rating — suitable for installation inside electrical cabinets

Technical Specifications

• Article Number: 3RK2400-2CE00-2AA2
• Module Type: AS-Interface SlimLine Compact digital I/O, SC22.5, A/B slave
• Digital Inputs: 4 (PNP, 2- or 3-wire)
  • Sensor supply: via AS-Interface bus or external auxiliary supply
• Digital Outputs: 4 (PNP transistor)
  • Max. total module output current: 4 A
  • Each output up to 2 A at 24 V DC (DC-13)
• AS-Interface Operating Voltage: 18 … 31.6 V DC
• Max. AS-Interface Bus Current: 270 mA
• Auxiliary Output Supply (when used): Requires external 20–30 V DC (PELV / SELV) for outputs
• Terminal Type: Screw terminals
  • Solid conductors: up to 2.5 mm² (1×) or 1.5 mm² (2×)
  • Fine-stranded with end ferrule: up to 2.5 mm² (1×) or 1.0 mm² (2×)
• Mounting: Snap-on / screw mounting for control-cabinet DIN rail installation
• Dimensions (approx.): Width 22.5 mm, Depth ~120 mm, Height ~100 mm
• Ambient Operating Temperature: –25 °C to +70 °C
• Storage Temperature: –40 °C to +85 °C
• Protection Class: IP20 (with conductors connected)

Compliance & Standards

• Compliant with AS-Interface specification for A/B slaves (Slave profile S-7.A.7)
• Supports AS-i Power24V mode (auxiliary sensor/output supply) when used
• Meets industrial requirements for distributed I/O modules with EMC, mechanical shock resistance, and standard terminal safety

Applications

The 3RK2400-2CE00-2AA2 module is ideal for distributed I/O solutions in industrial automation, enabling connection of sensors and actuators over AS-Interface networks while minimizing wiring complexity. Typical applications include control cabinets, machine automation, conveyor systems, distributed sensor/actuator networks in production lines, and modular automation cells — especially when compact footprint and easy integration are required.