SIMATIC S7-300 PLC 6ES7322-1BL00-0AA0 SM 322, DO 32×24V

SIMATIC S7-300 PLC 6ES7322-1BL00-0AA0 SM 322, DO 32×24V

I. Product Description:

The SIMATIC 6ES7322-1BL00-0AA0 is a high-density digital output module from the SIMATIC SIMATIC S7-300 series; its full model number is SM 322, DO 32×24V DC/0.5A. It features 32 digital output channels with transistor source-type outputs (PNP). The maximum load current per channel is 0.5 A

Each output channel features electronic short-circuit protection with a typical response threshold of approximately 1 A.

It requires a 24 V DC load power supply (permissible range: 20.4 V to 28.8 V). The maximum current drawn from the backplane bus is approximately 110 mA, and the maximum current drawn from the load power supply L+ (no load) is approximately 160 mA. Typical power consumption is 6.6 W.

Optical isolation is provided between the channels and the backplane bus; channels are isolated in groups of eight, with an isolation test voltage of 500 V DC.

II. Product Specifications:

SIMATIC 6ES7322-1BL00-0AA0｜SIMATIC S7-300 SM 322 Digital Output Module

Rated Output Voltage: 24 V DC;
Output Voltage Range: 20.4 to 28.8 V DC;
Output Current: 0.5 A per output;
Output Current Range: 5 mA to 0.5 A;
Maximum Total Output Current: 4 A per group, depending on ambient temperature and installation conditions;
Output Characteristic: Source output;
Signal "1" Output Voltage: Minimum 20 V DC;
Signal "0" Output Voltage: Maximum 0.5 V DC at 0.5 A;
Short-Circuit Protection: Electronic short-circuit protection supported;
Overload Protection: Supported;
Inductive Load Switching: Supported;
Lamp Load: Up to 5 W per output;
Output Delay: Maximum 100 μs from "0" to "1" and maximum 500 μs from "1" to "0";
Switching Frequency with Resistive Load: Up to 100 Hz;
Switching Frequency with Inductive Load: Up to 0.5 Hz;
Switching Frequency with Lamp Load: Up to 10 Hz;
Electrical Isolation: Outputs electrically isolated from the backplane bus;
Channel Grouping: 32 outputs arranged in 8 groups of 4 channels;
Diagnostic Functions: Module and channel diagnostics supported;
Status Indication: LED status indication for individual output channels;
Power Supply: 24 V DC;
Backplane Bus Current Consumption: Approximately 80 mA at 5 V DC;
Typical Power Loss: Approximately 6.6 W;
Front Connector: 40-pin front connector;
Engineering Software: STEP 7 / TIA Portal;
Configuration: Parameterizable through the STEP 7 engineering environment;
System Compatibility: SIMATIC S7-300 automation systems;
Mounting: Installation on the S7-300 mounting rail;
Protection Rating: IP20;
Operating Temperature: 0 to 60 °C;
Storage / Transport Temperature: -40 to 70 °C;
Maximum Cable Length: Up to 600 m for shielded cables and up to 1,000 m for unshielded cables, depending on application conditions;
Dimensions (W × H × D): Approximately 40 × 125 × 120 mm;
Net Weight: Approximately 260 g;
Typical Applications: Digital actuator control, solenoid valve control, relay control, motor control, machine automation, conveyor systems, packaging equipment, production lines, and industrial automation systems based on the SIMATIC S7-300 

III. Technical Parameters:

SIMATIC S7-300, digital output SM 322, isolated, 32 DO, 24 V DC, 0.5 A, 1x 40-pole, total current 4 A/group (16 A/module)

IV. Industries Served:

The SIMATIC S7-300 6ES7322-1BL00-0AA0 is primarily used in industrial automation projects requiring large-scale digital I/O control.

It is suitable for light industrial machinery, packaging machinery, assembly machinery, machine tools, and lifting and transport equipment. This is also reflected in the overall positioning of the S7-300 system, whose applications span special-purpose machinery, textile machinery, controller manufacturing, and installation systems, among other fields.

It can be used in light industry and chemical processing conveying and conveyor belt systems.

It is widely used in industrial automation fields such as automotive manufacturing, brewing equipment, and textile and printing.

V. Why choose us?

We source directly from China’s Tier 1 channels, eliminating all middleman markups. This means you get competitive prices close to factory cost, and we pass those savings on to you as profit or budget flexibility for your projects. 

Don’t let stockouts slow down your project schedule. For popular models like the S7-1500 and G120, which are frequently purchased, we always maintain high levels of in-stock inventory. The moment you place your order, the goods are already ready in our warehouse. Within 1–3 business days, you’ll receive the tracking number for your international express shipment. Whether your factory is in the Middle East, Southeast Asia, or across Europe and the Americas, our global logistics network helps you reclaim valuable time.

From precision manufacturing in Europe to oil and gas fields in the Middle East, and electronics assembly lines in Southeast Asia, our products and solutions have withstood the test of demanding operating conditions around the world. We deeply understand the unique characteristics of each market, and this global experience is the guarantee of your project’s successful implementation. 

We don’t just sell products—we provide the technical support that keeps your equipment running smoothly. Whether you’re facing challenges with product selection, encountering commissioning errors, or dealing with unexpected failures, our technical team is always on standby to ensure your production line issues 

VI. FAQ:

1,How to buy the product?

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