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Module Overview
This compact power supply provides regulated 24V DC for small S5-90U PLC systems. You can install Siemens 6ES5930-8MD11 directly into the integrated power slot of S5-90U units. The module converts AC line voltage into stable DC power for CPU and limited I/O. It suits standalone controller applications with minimal space requirements.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 180 mm x 90 mm x 55 mm |
| Weight | 0.48 kg |
| Input voltage range | 85V to 264V AC (universal) |
| Input frequency | 47 Hz to 63 Hz |
| Output voltage | 24V DC (regulated) |
| Output current rating | 1.5 A continuous |
| Output ripple | < 30 mV peak-to-peak |
| Output protection | Short-circuit and overcurrent |
| Efficiency | > 82% at full load |
| Hold-up time | 20 ms at 1.5A load |
| Status indicators | 1 green LED (output OK) |
| Interface | Hardwired terminals (no backplane) |
| Total onboard components | 112 discrete parts |
| Energy storage type | Electrolytic capacitors |
| Energy storage rating | 680 µF at 400V DC (primary) |
| Operating temperature | 0°C to +55°C |
Board Layout and Components
The PCB integrates all power conversion components on a single compact board. A switching transformer provides isolation between input and output circuits. Moreover, 112 discrete parts include rectifier diodes and output regulation ICs. Electrolytic capacitors store 680 µF of energy on the primary side. Consequently, the module smooths input voltage variations effectively.
Installation Process
You can mount Siemens 6ES5930-8MD11 inside any small control panel enclosure. The front panel terminal block accepts AC input and DC output wiring directly. Furthermore, integrated mounting tabs secure the module to DIN rails or backplates. A green LED on the front panel confirms proper output voltage operation.
Performance Advantages
This module operates on any AC voltage from 85V to 264V without manual selection. The 1.5 amp output supports a small S5-90U CPU plus limited I/O expansion. Therefore, it suits compact machine control applications perfectly. The 20 ms hold-up time also bridges short power interruptions reliably.
Safety and Compliance
Siemens 6ES5930-8MD11 meets CE, UL, and RoHS standards. The primary capacitors discharge below 50V within 45 seconds. Hence, technicians should wait 45 seconds after disconnecting AC power before servicing.