Siemens 6ES5930-7AA21 | SIMATIC S5 Power Supply Module

Technical Overview of the Power Supply Module

The Siemens 6ES5930-7AA21 provides regulated DC power for smaller SIMATIC S5 PLC configurations. This compact module converts AC mains into stable DC voltages for backplane operation. It delivers 5V and 24V outputs for CPU and I/O modules. The design includes basic overload protection for reliable industrial use.

Key Technical Specifications

This section details the exact parameters for the Siemens 6ES5930-7AA21 power supply module. Refer to these figures when planning your system power requirements.

Parameter	Specification
Part Number	6ES5930-7AA21
Type	Power Supply Module
Product Family	SIMATIC S5
Input Voltage	230V AC (nominal)
Input Frequency	50/60 Hz
Output 1	5V DC, 5A
Output 2	24V DC, 0.5A
Total Output Power	Approx. 37W
Efficiency	Approx. 80%
Protection	Short-circuit and overcurrent
Dimensions (W x H x D)	Approx. 250 x 25 x 180 mm
Weight	Approx. 1.8 kg
Compatibility	SIMATIC S5-90U, 95U, and 115U systems

Application and System Integration

This power supply fits into the designated slot of compatible S5 racks. It energizes all backplane modules through the internal bus system. The Siemens 6ES5930-7AA21 provides 5V at 5A for logic circuits. Its 24V auxiliary output supports external sensors and relays. Consequently, the module reduces the need for separate power supplies.

Reliability and Performance Features

The built-in short-circuit protection prevents damage from wiring errors. This module operates quietly with minimal heat generation. Its compact size suits space-constrained control cabinets. Users choose the Siemens 6ES5930-7AA21 for cost-effective power delivery in smaller systems.