Siemens 6ES7322-1BL00-0AA0 SIMATIC S7-300 SM 322 Digital Output Module
ManufacturerSiemensModel6ES7322-1BL00-0AA0Product TypeSIMATIC S7-300 SM 322 Digital Output Module
01Technical Summary
Siemens 6ES7322-1BL00-0AA0 is an isolated SIMATIC S7-300 SM 322 digital output module with 32 channels for 24 V DC loads. Each output is rated at 0.5 A, channels are isolated in groups of eight, and the module uses one 40-pole front connector.
Configuration ControlMatch the exact model, ratings, installed system, wiring, required approvals, and hardware revision before ordering.
02Specifications
| Manufacturer | Siemens |
|---|---|
| Article Number | 6ES7322-1BL00-0AA0 |
| Product Family | SIMATIC S7-300 SM 322 |
| Product Type | Isolated digital output module |
| Digital Outputs | 32 |
| Load Voltage | 24 V DC; permissible 20.4...28.8 V DC |
| Rated Output Current | 0.5 A per channel |
| Output Grouping | 4 groups of 8 channels |
| Total Current | 4 A per group; 16 A per module at specified conditions |
| Short-Circuit Protection | Electronic |
| Power Loss | 6.6 W typical |
| Front Connector | 1 x 40-pole |
| Switching Frequency | 100 Hz resistive; 0.5 Hz inductive; 10 Hz lamp load |
| Cable Length | 1000 m shielded; 600 m unshielded |
| Lifecycle | Spare part / product deletion status |
03Features
Design and Function
- Thirty-two isolated 24 V DC output channels in a standard S7-300 signal-module width.
- Electronic short-circuit protection is provided for the outputs.
- Green status indication is available for each digital output channel.
- Potential separation is provided between output groups and the backplane bus.
- Outputs from the same group can be used for redundant control of a load within the documented rules.
- The 40-pole front connector keeps field wiring separate from the replaceable module body.
Verified Identity
Manufacturer: Siemens
Model: 6ES7322-1BL00-0AA0
Product Type: SIMATIC S7-300 SM 322 Digital Output Module
04Compatibility
- Install only in a SIMATIC S7-300 rack and configuration that supports this SM 322 article.
- Match the 24 V DC load supply and observe group and module total-current limits.
- Use the required 40-pole S7-300 front connector and preserve the exact channel-to-terminal mapping.
- Verify load type, switching frequency, inrush behavior, external protection, and conductor size.
- Do not confuse this digital output module with the similarly numbered SM 321 digital input module.
05Replacement & Lifecycle
- Siemens identifies the article as a spare part in product deletion status.
- Back up the hardware configuration and document all 32 channel assignments before removal.
- De-energize or isolate field loads according to the site procedure before releasing the front connector.
- After installation, verify load voltage, each channel status, commanded operation, and the current distribution by group.
- For modernization, assess the complete S7-300 rack, CPU, front connectors, wiring adapters, and software migration path.
06Applications
- 24 V DC solenoid, relay, and indicator control in S7-300 systems.
- Machine and process output expansion requiring 32 digital channels.
- Legacy S7-300 maintenance using an exact SM 322 replacement.
- Output groups that require backplane isolation and channel status indication.
FAQFrequently Asked Questions
How many outputs does the module provide?
It provides 32 digital outputs.
What is the rated output voltage and current?
The module uses a 24 V DC load supply and each channel is rated at 0.5 A.
How are the channels grouped?
The outputs are isolated in four groups of eight channels.
Which front connector is required?
A 40-pole S7-300 front connector is required.
Does the module provide short-circuit protection?
Yes. Siemens specifies electronic short-circuit protection.
What must be checked during replacement?
Confirm the article number, channel wiring, load supply, group-current limits, front connector, hardware configuration, and all output tests.
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