Siemens S7-400 Digital Output Module SM 422 - 32 Channel High-Current Isolated

The Siemens 6ES7422-1BL00-0AA0 is a powerful digital output module for the SIMATIC S7-400 PLC system. It provides 32 high-current output channels for 24V DC loads. This module delivers reliable switching with 0.5A per channel capability, electronic short-circuit protection, and group isolation. Perfect for controlling valves, relays, and indicators in industrial automation applications.

Product Highlights

High Current Capacity: Each output handles up to 0.6A continuous current (0.5A rated) for driving demanding loads.

Robust Protection: Features electronic short-circuit protection with automatic restart and voltage clamping for inductive loads.

Flexible Configuration: Outputs can be paralleled within groups for higher current or redundant load control.

Fast Switching: Consistent 1ms maximum switching delay both ON and OFF with resistive loads.

Detailed Technical Specifications

Brand: Siemens

Series: SIMATIC S7-400

Full Model Number: 6ES7422-1BL00-0AA0

Module Type: Digital Output (DO)

Output Channels: 32, Isolated in one group

Load Voltage: 24V DC (20.4V - 28.8V range)

Output Current: 0.5A rated per channel (0.6A max)

Short-Circuit Protection: Yes, electronic (0.7-1.5A threshold)

Switching Delay: Max 1ms (ON and OFF)

Max Switching Frequency: 100 Hz (resistive), 0.5-2 Hz (inductive)

Parallel Connection: Possible within same group for higher current

Group Current Limit: 4A at 40°C, 2A at 60°C (per 8-output group)

Power Consumption: Typically 4 W

Isolation: 500V AC/707V DC between outputs and backplane

Dimensions: 25 mm x 290 mm x 210 mm (W x H x D)

Weight: Approximately 600 g

Installation & Compatibility Guide

This module installs directly into any S7-400 PLC rack. It is designed for 24V DC solenoid valves, contactors, indicators, and relays. For inductive loads, use appropriate suppression diodes. Ensure total group current does not exceed 4A at 40°C ambient temperature. Maximum cable length is 1000m shielded or 600m unshielded.

Package Contents & Warranty

Box Includes: 1 x Siemens 6ES7422-1BL00-0AA0 Digital Output Module.

Quality Guarantee: All products come with a solid 12-month warranty for peace of mind.

Global Shipping Options

We ship internationally using major carriers: FedEx, UPS, and DHL for fast and reliable delivery to your facility.

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