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Siemens 6ES7422‑1BL00‑0AA0 SIMATIC S7‑400 Digital Output Module

Reliable Digital Output for Industrial Automation

The Siemens SIMATIC S7‑400 SM 422 digital output module (part number 6ES7422‑1BL00‑0AA0) provides 32 channels of 24 V DC outputs, each rated at 0.5 A. Designed for the S7‑400 automation system, it ensures robust and flexible control of actuators in demanding industrial environments.

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⚙️ Key Specifications (Model 6ES7422‑1BL00‑0AA0)

• Series: SIMATIC S7‑400, SM 422
• Outputs: 32 digital outputs (grouped in sets of 8)
• Rated Load Voltage: 24 V DC
• Output Current: 0.5 A per channel
• Isolation: Outputs isolated in groups of 32
• Supply Groups: Channels grouped (0–7, 8–15, 16–23, 24–31), each can be switched off separately
• Status LEDs: Indicate system state even if connector is not attached
• Dimensions: Approx. 290 × 25 × 210 mm
• Compliance: RoHS, IEC standards

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🔑 Features & Benefits

• Flexible grouping: Outputs divided into 4 supply groups of 8 channels for selective switching.
• Diagnostics: Built‑in LEDs provide quick status checks.
• Compact design: Slim profile for rack mounting in S7‑400 systems.
• Industrial reliability: Designed for continuous operation in automation environments.

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📌 Applications

• Factory automation and process control
• Robotics and machine control
• Building management systems
• Energy and utility monitoring
• Large‑scale industrial automation projects

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📊 Related S7‑400 Digital Output Modules

Model Code	Outputs	Voltage	Current per Channel	Notes
6ES7422‑1BL00‑0AA0	32	24 V DC	0.5 A	Standard 32‑channel module
6ES7422‑1BH11‑0AA0	16	24 V DC	2 A	Higher current per channel
6ES7422‑5EH10‑0AB0	16	20–125 V DC	1.5 A	Wide voltage range option
6ES7422‑1BL01‑0AA0	32	24 V DC	0.5 A	Updated version with diagnostics

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⚠️ Considerations

• Phase‑out notice: Siemens has announced a product phase‑out by October 2025, so long‑term availability may be limited.
• Compatibility: Ensure rack and power supply are compatible with S7‑400 modules.
• Future migration: For new installations, consider Siemens S7‑1500 series for long‑term support.

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✅ Summary: The Siemens 6ES7422‑1BL00‑0AA0 SIMATIC S7‑400 Digital Output Module is a robust, flexible solution for controlling actuators in industrial automation systems. With 32 channels, diagnostic LEDs, and reliable performance, it is ideal for maintaining existing S7‑400 installations, while newer projects should evaluate migration to the S7‑1500 series.

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