Siemens 6ES7307-1EA01-0AA0

SIMATIC S7-300 Stabilized Power Supply PS307: Technical Overview

The 6ES7307-1EA01-0AA0 SIMATIC S7-300 Stabilized Power Supply PS307 is a robust and reliable power supply unit designed to provide stable power to automation systems. Its input and output specifications are optimized for industrial applications, ensuring consistent performance and safety.

Input Specifications

The PS307 power supply accommodates a dual nominal input voltage of 120 V AC and 230 V AC. It operates efficiently within an input voltage range of 85 to 132 V for 120 V AC and 170 to 264 V for 230 V AC, making it versatile for various electrical environments. The device operates on a net frequency of 50/60 Hz with a rated line range from 47 to 63 Hz, ensuring compatibility with different power grids.

At a nominal input voltage of 120 V, the power supply has an input current of 2.3 A, while at 230 V, it has a significantly lower input current of 1.2 A. This efficiency is further supported by a switch-on current limiting feature capped at 20 A (at 25°C) and a current limiting duration of a maximum of 3 ms. Additionally, the unit provides mains buffering for a minimum of 20 ms at the rated output current, ensuring continuous operation during minor power disturbances.

Output Specifications

The PS307 delivers a regulated, potential-free direct current voltage of 24 V DC with an output tolerance of ± 3%. It maintains high precision with static mains compensation at approximately 0.1% and static load balancing at about 0.5%. The power supply has a maximum residual ripple peak-to-peak of 50 mV, typically around ten mV, ensuring clean and stable power output.

This unit is designed with an output voltage that is not adjustable. It features a green LED indicator for 24 V O.K., providing straightforward status monitoring. The power supply's response time is 2 seconds, with a voltage rise time of 10 ms. The rated output current is 5 A, supporting a power delivery of approximately 120 W. It can handle short-term overloads with a peak current of 20 A during startup and operation for up to 100 ms.

Efficiency and Performance

The PS307 is highly efficient, with an efficiency rating of approximately 87% at rated output voltage and current. The power loss at these conditions is around 18 W. The unit exhibits excellent closed-loop control with dynamic mains compensation (±15%) at a maximum of 0.1% and dynamic load smoothing, achieving typical output voltage deviations of ± 1% during load changes.

Protection and Monitoring

To ensure safety and reliability, the power supply features a current limitation between 5.5 A and 6.5 A and is short-circuit resistant, with an enduring short-circuit current limit of up to 7 A. The output is galvanically isolated according to EN 60950-1 and EN 50178 standards, ensuring electrical safety. It also maintains low stray currents, with a maximum of 3.5 mA and typically around 0.5 mA.

Environmental Specifications

The PS307 is designed to operate within an ambient temperature range of 0 to 60°C, making it suitable for various industrial settings. It can withstand temperatures from -40 to +85°C for storage and transport, demonstrating its durability under extreme conditions. The unit is rated with an IP20 protection class, indicating its resistance to dust ingress.

FAQs for SIMATIC S7-300 Stabilized Power Supply PS307 (6ES7307-1EA01-0AA0)

What is the input voltage range for the SIMATIC S7-300 PS307 power supply?

The PS307 power supply accepts a wide input voltage range to accommodate different electrical environments. For 120 V AC nominal input, it operates within 85 to 132 V AC. For 230 V AC nominal input, it operates within 170 to 264 V AC.

What are the nominal input current requirements for the PS307?

At the nominal input voltage of 120 V AC, the input current is 2.3 A. At 230 V AC, it is reduced to 1.2 A, reflecting the unit's efficient design.

What output voltage does the PS307 provide?

The PS307 provides a regulated output voltage of 24 V DC, with a total tolerance of ±3%. This ensures stable and reliable power for connected devices.

Is the output voltage adjustable?

No, the PS307's output voltage is not adjustable. It is fixed at 24 V DC to ensure consistent and stable power delivery.

What is the maximum output current of the PS307?

The PS307 has a maximum output current of 5 A, making it suitable for various industrial applications requiring stable power.

How efficient is the PS307 power supply?

The PS307 operates with an efficiency of approximately 87% at the rated output voltage and current. This high efficiency minimizes power loss and heat generation.

What safety features does the PS307 include?

The PS307 includes several safety features:

• Current limitation between 5.5 A and 6.5 A
• Short-circuit resistance with an enduring short-circuit current limit of up to 7 A
• Galvanic isolation according to EN 60950-1 and EN 50178 standards
• Low stray current, with a maximum of 3.5 mA

What is the ambient operating temperature range for the PS307?

The PS307 can operate within an ambient temperature range of 0 to 60°C. It can withstand temperatures from -40 to +85°C for storage and transport, demonstrating its robustness in extreme conditions.

How does the PS307 handle power surges and short-term overloads?

The PS307 is designed to handle short-term overloads with a peak current of 20 A during startup and operation for up to 100 ms. This ensures that the power supply can manage transient conditions without compromising performance.

What is the protection class rating of the PS307?

The PS307 has an IP20 protection class rating, indicating it is protected against solid objects larger than 12.5 mm (such as fingers) and does not have protection against water ingress.

Does the PS307 provide any indicators for its operational status?

Yes, the PS307 features a green LED indicator that shows when the 24 V DC output is OK. This provides a quick visual confirmation of the power supply's operational status.

Can the PS307 maintain operation during brief power interruptions?

Yes, the PS307 includes mains buffering for a minimum of 20 ms at the rated output current, ensuring continuous operation during brief power interruptions or fluctuations.

These FAQs cover the essential aspects of the SIMATIC S7-300 PS307 power supply, clarifying its features, specifications, and operational capabilities.

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