Siemens 6SN1123-1AA00-0DA1 Power Supply Module for PLC and Drive Systems
The Siemens 6SN1123-1AA00-0DA1 is a regulated power supply module designed for use with Siemens SIMODRIVE and PLC systems. It provides stable DC power to control units, I/O modules, and auxiliary circuits, ensuring reliable operation in industrial automation environments. This module is known for its high efficiency and comprehensive protection features.
Input and Output Specifications
Input voltage: 400-480 VAC, 3-phase, 50/60 Hz. Output voltage: 24 VDC (adjustable ±5%). Output current: 20 A continuous (30 A peak for 5 seconds). Output power: 480 W. The module has a built-in power factor correction (PFC) achieving > 0.95 PF.
Protection Functions
Overvoltage protection (shuts down at > 30 V), overcurrent protection (current limiting with foldback), short-circuit protection (hiccup mode), and overtemperature protection (thermal shutdown with auto-restart). It also includes input transient suppression and a fuse on the input.
Electrical Isolation
Isolation between input and output is rated at 4000 VAC, ensuring safety and immunity. The output is SELV compliant, suitable for powering sensitive electronics.
Diagnostics and Monitoring
LED indicators: green (output OK), yellow (warning, e.g., high temperature), red (fault). The module provides a relay contact for remote status signaling (normally closed, opens on fault). It also has a 0-10 V analog output proportional to output current for monitoring.
Mechanical and Environmental Data
Dimensions: 250 mm x 160 mm x 110 mm (H x W x D). Weight: approx. 3.5 kg. Mounting: panel or rack (using four screws). Operating temperature: -10 to +50°C (derating above 40°C). Storage: -25 to +85°C. Humidity: 5-95% non-condensing. Enclosure: IP20.
Cooling
Natural convection (no fan), with an external heat sink. Adequate spacing is required for airflow. The module is designed for vertical mounting.
Compatibility
Compatible with Siemens SIMODRIVE 611 and 840D systems, as well as S7-300 and S7-400 PLC racks (using adapter brackets).
Applications
Used to supply DC power to CNC controls, PLC CPUs, I/O stations, sensors, and relays in machine tools, printing presses, and conveyor systems.
Installation and Wiring
Installation requires secure mounting and proper grounding. Input terminals are screw-type for 10 AWG wire; output terminals for 12 AWG. Shielded cables are recommended for the analog output.
Maintenance and Reliability
No routine maintenance except for cleaning of ventilation slots. MTBF is rated at > 200,000 hours. The module has no user-adjustable parts.
Certifications
CE, UL 508, and CSA approved. Meets EN 61000-6-2 and EN 61000-6-4 standards.
In summary, the Siemens 6SN1123-1AA00-0DA1 power supply module offers robust, high-current DC power for PLC and drive systems, ensuring stable operation and system protection.
