PLC | Siemens | 6ES7322-1HF01-0AA0 6ES7 322-1HF01-0AA0 SM 322 Digital Output Modules

Product Description: 6ES7322-1HF01-0AA0

The 6ES7322-1HF01-0AA0 is a high-feature (HF) digital input module for the SIMATIC S7-300 PLC. In a 40 mm-wide SM 322 form-factor, it provides eight isolated 24 V DC inputs with advanced diagnostics and configurable input filtering. Ideal for detecting PNP/NPN sensor signals (proximity switches, pushbuttons, limit switches), it plugs directly onto the S7-300 backplane, drawing power and communication via the rack.

Key Features

• 8 Isolated Inputs: 24 V DC, PNP/NPN compatible
• Channel Diagnostics: Short-circuit, wire-break, and overvoltage detection per input
• Configurable Debounce: User-selectable input filtering (STEP 7/TIA Portal)
• Status LEDs: Individual channel and module status indication
• Hot-Swap Capability: Replace in a redundant rack without halting operation
• Compact Design: 40 mm width maximizes I/O density

Technical Specifications

• Number of Inputs: 8
• Input Voltage: 24 V DC ±20 %
• Input Current: ≤ 6 mA per channel
• Isolation: 500 V DC channel-to-backplane
• Diagnostics: Short-circuit, wire-break, overvoltage
• Debounce Time: 0…20 ms configurable
• Power Consumption: 0.3 W (logic) + 1.2 W (field)
• Module Width: 40 mm
• Mounting: Plug-in on S7-300 rack backplane
• Operating Temperature: 0 … +60 °C
• Protection Class: IP20
• Weight: ≈ 200 g

Application Areas

• Machine-level digital sensing (proximity, limit switches)
• Conveyor and material handling signal acquisition
• Packaging, assembly, and robotic system inputs
• Redundant S7-300 installations requiring hot-swap I/O

Advantages

• Integrated channel diagnostics reduce troubleshooting time
• Selectable input filtering improves noise immunity
• High I/O density in a narrow module footprint
• Hot-swap support minimizes downtime in critical systems
• Seamless integration within STEP 7 and TIA Portal environments