Introduction to the Siemens 6ES7307-1EA01-0AA0
When reliable DC power is critical for your S7-300 automation system, the 6ES7307-1EA01-0AA0 provides a regulated 24V DC output at 5A. This Siemens PS307 power supply accepts 120/230V AC input with automatic range selection, making it a versatile choice for global installations.
Engineered for industrial environments, this unit offers galvanic isolation between input and output, ensuring clean, stable power for your PLC modules. With its compact 60mm width, it fits onto the S7 rail, saving valuable cabinet space.
Key Features and Performance Metrics
- Input voltage: 85...132V AC or 170...264V AC (automatic range selection)
- Output voltage: 24V DC, rated current 5A
- Efficiency: 87% at rated load
- Residual ripple: max 50mV, typical 10mV
- Short-circuit proof with electronic shutdown and automatic restart
- Green LED for 24V OK status indication
- IP20 protection class
One distinctive feature is the overvoltage protection that shuts down at <28.8V and automatically restarts. This safeguards your connected S7-300 modules from damaging voltage spikes, reducing unexpected downtime.
Installation and Mounting
Mount the 6ES7307-1EA01-0AA0 directly onto an S7 rail using the integrated fastening mechanism. Ensure the required clearances: 40mm top and bottom, 0mm left and right. Connect the input via screw terminals (L, N, PE) accepting 0.5...2.5mm² wires. For the output, three screw terminals each for L+ and M provide flexible wiring options.
For input protection, use a miniature circuit breaker rated from 6A characteristic C, as recommended by Siemens. This ensures proper overcurrent protection without nuisance trips.
Maintenance and Reliability
Regular inspection of the power supply is essential to maintain long-term reliability. Check for dust accumulation on the enclosure and ensure ventilation openings are clear. The unit operates in ambient temperatures from 0 to 60°C with natural convection, so avoid obstructing airflow.
Given its high MTBF and robust design, the 6ES7307-1EA01-0AA0 minimizes maintenance needs. However, periodic verification of output voltage and LED status is recommended as part of routine preventive maintenance.
Buyer's Guide: Evaluating the 6ES7307-1EA01-0AA0
When selecting a power supply for your S7-300 system, consider the following criteria:
- Output current: The 5A rating supports typical S7-300 configurations with multiple I/O modules.
- Input flexibility: Automatic range selection simplifies installation across regions with different mains voltages.
- Isolation: Galvanic isolation ensures safe operation and protects sensitive electronics.
- Certifications: CE, UL, CSA, ATEX, IECEx, and marine approvals (DNV, LRS) broaden its applicability.
This power supply is designed for reliable performance in demanding environments, with an MTBF of 2,480,589 hours at 40°C.
Compatibility and Integration
This power supply is part of the Siemens SIMATIC S7-300 family, designed to work with S7-300 PLCs and their associated modules. It provides the 24V DC logic supply required by CPU, I/O, and interface modules. The output is safety extra-low voltage (SELV) per EN 60950-1 and EN 50178, ensuring safe operation in industrial control panels.
Troubleshooting Common Issues
If the green LED is off, check the input voltage and fuse. The internal fuse is rated T 3.15A/250V and is not user-accessible; if blown, contact qualified service personnel. In case of output short circuit, the unit shuts down electronically and restarts automatically once the fault is cleared. Verify that the load does not exceed 5A continuously, as the current limitation is set at 5.5...6.5A.
Support and Availability
The 6ES7307-1EA01-0AA0 is available from AutoDCSTech. Contact us for current stock and pricing.
Availability & Condition at AutoDCSTech
| Part Number | 6ES7307-1EA01-0AA0 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
