Key Specs

• Product Type: Digital Output Expansion Module

• Series: SIMATIC S7-300 SM 322

• Number of Outputs: 32

• Output Voltage: 24 V DC

• Rated Output Current: 0.5 A per channel

• Output Isolation: Optically isolated

Siemens 6ES7322-1BL00-0AA0 is a SIMATIC S7-300 SM 322 digital output expansion module designed for reliable switching of DC loads in industrial automation systems. It provides 32 optically isolated outputs operating at 24 V DC, making it suitable for controlling relays, solenoids, contactors, and indicator devices.

The module connects using a 40-pin front connector and integrates directly into SIMATIC S7-300 PLC racks. It is commonly used in existing control systems where dependable output expansion or direct replacement of legacy digital output hardware is required.

FAQs

What is the Siemens 6ES7322-1BL00-0AA0 used for?
It is used to expand digital output capacity in SIMATIC S7-300 PLC systems, providing 24 V DC signals to field devices such as relays, solenoids, contactors, and indicator lights.

How many outputs does this module have?
The module provides 32 digital outputs, each optically isolated for improved noise immunity and system protection.

What supply voltage does it require?
The load voltage L+ is rated at 24 V DC, with an allowable operating range of 20.4 V to 28.8 V DC.

What are the current limits?
Each output is rated at 0.5 A. Maximum current is 4 A per output group and up to 16 A across the entire module.

Is this product still available?
This product has been discontinued and is no longer supported by the manufacturer. It remains widely used in existing SIMATIC S7-300 systems and is available for replacement and maintenance through existing inventory.