6AG1307-1KA02-7AA0 24V DC 10A SIPLUS S7-300 Power Supply

Introduction to the 6AG1307-1KA02-7AA0

When your automation line demands a robust and reliable power source, the 6AG1307-1KA02-7AA0 from Siemens stands ready. This SIPLUS S7-300 PS 307 power supply is based on the standard 6ES7307-1KA02-0AA0 but adds a conformal coating for enhanced protection. It provides a stabilized 24V DC output at 10A, making it a solid choice for industrial control cabinets. Furthermore, its extended temperature range of -25 to +70 °C ensures dependable operation in harsh environments.

Key Features and Technical Specifications

The 6AG1307-1KA02-7AA0 is engineered for performance and durability. Below are the core specifications that define its capability:

• Input Voltage: 120/230 V AC (85-132 V AC / 170-264 V AC)
• Output Voltage: 24 V DC (stable, range 23.27-24.72 V)
• Output Current: 10 A (7 A at >60 °C, parallel operation possible)
• Line Frequency: 47-63 Hz
• Efficiency: Approx. 90% at rated values
• Power Loss: Typ. 27 W
• Residual Ripple: Max. 50 mV peak-to-peak
• Short-Circuit Protection: Electronic trip with automatic restart
• Isolation: SELV output per EN 60950-1 and EN 50178
• Conformal Coating: Protects against moisture and chemical exposure

One distinctive feature is the conformal coating, which shields the internal circuitry from condensation and corrosive gases. This makes the unit particularly suitable for installations in humid or chemically active environments. Additionally, the power supply includes a green LED status indicator for output voltage, allowing quick visual confirmation of operation.

Applications and Use Cases

This power supply is ideal for stationary industrial systems where reliability is non-negotiable. It is tested against biologically active substances (Class 3B2), chemically active substances (Class 3C4), and mechanically active substances (Class 3S4) per EN 60721-3-3. Therefore, it fits applications in chemical plants, food processing, and offshore platforms. Moreover, its wide temperature range and conformal coating make it a preferred choice for outdoor or unheated enclosures.

Installation and Setup

Mounting the 6AG1307-1KA02-7AA0 is straightforward. It snaps onto a standard 35 mm DIN rail within an S7-300 enclosure. Ensure adequate ventilation and maintain clearance around the unit for heat dissipation. The input terminals accept 120/230 V AC, while the output provides 24 V DC. Always verify the wiring against the labeling on the device before energizing. For parallel operation, follow the guidelines in the manual to balance load sharing.

Maintenance and Reliability

Thanks to its robust design, the 6AG1307-1KA02-7AA0 requires minimal maintenance. However, periodic inspection is recommended to ensure the conformal coating remains intact and no dust accumulates on the heatsink. The unit's efficiency of about 90% reduces energy waste, translating into lower operating costs over its service life. In addition, the electronic short-circuit protection prevents damage from overloads, enhancing overall system uptime.

Compatibility and Integration

As part of the Siemens S7-300 family, this power supply integrates seamlessly with S7-300 PLCs and associated I/O modules. It is designed to meet EMC standards EN 61000-6-2 (immunity) and EN 55022 Class B (emission), ensuring minimal interference with nearby electronics. The SELV output complies with safety standards, making it safe for use with low-voltage control circuits.

Troubleshooting and Common Issues

If the output voltage is absent, check the input supply and the green LED indicator. A lit LED confirms the output is active. If the unit trips due to a short circuit, it will automatically restart once the fault is cleared. In case of persistent issues, verify that the ambient temperature does not exceed the rated limit, as derating occurs above 60 °C. Also, ensure that the mains voltage is within the specified range (85-132 V AC or 170-264 V AC).

Product Support and Availability

The 6AG1307-1KA02-7AA0 is available at AutoDCSTech. We offer competitive pricing and fast shipping to keep your operations running. Contact our team for current stock levels and lead times.