Siemens 6ES7322-1BL00-0AA0 SIMATIC S7-300 SM 322 32-Channel Digital Output Module 24V DC 0.5A
Siemens 6ES7322-1BL00-0AA0 datasheet
SIMATIC S7-300
SM 322 Digital Output Module
Place of Origin:
Germany
Brand Name:
Siemens
Siemens 6ES7322-1BL00-0AA0 datasheet
,SIMATIC S7-300
,SM 322 Digital Output Module
SM 322 Digital Output for SIMATIC S7-300
The Siemens 6ES7322-1BL00-0AA0 is a digital output module designed for SIMATIC S7-300 automation systems. It connects PLC output control signals with field-level devices and supports switching applications in industrial machinery and process equipment.
Application & Failure Scenarios
Installed in a SIMATIC S7-300 control system, this module switches field devices according to PLC digital output signals. Documented application examples include solenoid valves, DC contactors and indicator lamps.
Typical Search SituationsMaintenance teams may search for this module when output channels no longer switch field loads, actuator commands become intermittent, an output point is damaged, or an S7-300 rack requires module replacement. |
Potential Downtime ImpactA failed output circuit can prevent a connected actuator or signal device from responding. Depending on the machine sequence, this may interrupt interlocks, equipment operation or process control until the circuit is restored. |
Technical Specifications
| Manufacturer | Siemens |
| Order number | 6ES7322-1BL00-0AA0 |
| Product family / module | SIMATIC S7-300 / SM 322 |
| Module type | Digital output module, DO |
| Number of digital outputs | 32 |
| Rated load voltage L+ | 24 V DC |
| Permissible load voltage range | 20.4–28.8 V DC |
| Rated output current | 0.5 A per output |
| Permissible output current | 5 mA to 0.6 A per output, according to specified operating conditions |
| Total output current per group | Up to 4 A under the specified horizontal mounting condition at up to 40 °C |
| Output group arrangement | 8 outputs per isolation group |
| Short-circuit protection | Electronic |
| Front connector | 1 × 40-pin |
| Status indication | Green LED per channel |
| Electrical isolation | Between output groups and backplane bus; optocoupler isolation to backplane bus |
| Typical power loss | 6.6 W |
| Backplane bus current consumption | Max. 110 mA at 5 V DC |
| Load voltage current consumption | Max. 160 mA, no load |
| Dimensions (W × H × D) | 40 × 125 × 120 mm |
| Approximate weight | 260 g |
Additional Electrical & Operating Data ＋
| Output voltage at signal "1" | Minimum L+ − 0.8 V |
| Residual current at signal "0" | Max. 0.5 mA |
| Lamp load switching capacity | Max. 5 W |
| Load resistance range | 48 Ω to 4 kΩ |
| Switching frequency, resistive load | Max. 100 Hz |
| Switching frequency, inductive load | Max. 0.5 Hz |
| Switching frequency, lamp load | Max. 10 Hz |
| Output delay, 0 to 1 (resistive load) | Max. 100 μs |
| Output delay, 1 to 0 (resistive load) | Max. 500 μs |
| Inductive shutdown voltage limitation | L+ − 53 V |
| Cable length, shielded | Max. 1,000 m |
| Cable length, unshielded | Max. 600 m |
| Isolation test voltage | 500 V DC |
| Isochronous mode | Not supported |
| Interrupts | None |
| Diagnostic functions | None |
Group current limits depend on mounting orientation and ambient temperature. Verify the applicable Siemens installation conditions and load distribution before commissioning.
Installation, Configuration & Maintenance
Front ConnectionConfirm connector assignment, field wiring and load voltage before replacing or reconnecting the module. |
STEP 7 ConfigurationConfigure the module in the STEP 7 project and verify address allocation and I/O assignment. Incorrect or missing configuration can cause unexpected machine or process behavior. |
Output ChecksFor an output that does not operate its load, check the PLC command state, configured address, 24 V DC load supply, field wiring, connected load and group current limit. |
Diagnostic LimitationThis model has no built-in diagnostic functions, diagnostic alarms or wire-break / short-circuit diagnostic messages. A channel status LED is not a complete fault-diagnostic report. |
Lifecycle & Replacement Considerations
Siemens lists 6ES7322-1BL00-0AA0 as a product cancellation item. For maintenance or replacement purchasing, verify the installed S7-300 configuration, connector arrangement, output allocation and field load requirements. Do not assume another output module is a direct replacement without an application-specific compatibility check.
Frequently Asked Questions
1. What is the function of Siemens 6ES7322-1BL00-0AA0?It is an SM 322 digital output module for SIMATIC S7-300, providing 32 digital outputs at 24 V DC with a rated current of 0.5 A per output. |
2. How many output channels does this module provide?The module provides 32 digital output channels, arranged in isolation groups of eight. |
3. What is the rated load voltage and output current?Its rated load voltage is 24 V DC and its rated output current is 0.5 A per channel. The total current per group must remain within the specified installation and temperature limits. |
4. Does 6ES7322-1BL00-0AA0 provide channel fault diagnostics?No. Siemens specifies no diagnostic functions or diagnostic messages for this model. It does provide a green status LED for each output channel. |
5. What should be checked before ordering a replacement?Check the complete part number, S7-300 rack configuration, 40-pin front connector, output assignments, load voltage and field wiring. Confirm application compatibility before using another module as a substitute. |
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| Part Number | Quantity | Destination | Required Date | Machine/System Model |
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