Siemens 6SY7000-0AC80 PLC Power Supply Module
The Siemens 6SY7000-0AC80 is a high-power industrial power supply module designed for PLC systems, SIMOREG DC drives, and SIMADYN D controllers. It converts a 3-phase 400V AC input to a regulated 24V DC output at 20A (480W). The unit is fan-cooled and provides isolated, short-circuit-proof power for control electronics, sensors, and actuators in harsh industrial environments.
Electrical Specifications
Input voltage: 3-phase 380–480V AC (nominal 400V), 50/60 Hz.
Input current: 1.5A at full load.
Output voltage: 24V DC ±2% (adjustable via potentiometer: 22–28V).
Output current: 20A continuous, 30A for 5 seconds (peak).
Efficiency: 92% typical at full load.
Ripple: < 50 mVpp.
Protection and Safety
The power supply includes overvoltage protection (crowbar at 30V), overcurrent protection (hiccup mode, automatic recovery), and short-circuit proof. It has an output OK relay contact (floating, 30V DC/1A) that closes when output voltage >22V. The unit meets SELV (Safety Extra Low Voltage) per EN 60950 and is double-insulated.
Mechanical and Environmental
Dimensions: 180 mm width x 240 mm height x 130 mm depth (including fan). Weight: 3.5 kg. Mounting: DIN rail (EN 60715) or screw panel (4 holes). Operating temperature: -10°C to +55°C; derate output current by 2.5% per °C above 45°C. Storage: -25°C to +85°C. Humidity: 5% to 95% non-condensing. Protection class: IP20. The fan is temperature-controlled (starts at 60°C internal).
Connections
Input terminals: 3-phase (L1, L2, L3) and PE via screw terminals (up to 4 mm²). Output terminals: +24V and 0V (two parallel terminals each) for redundant wiring. Auxiliary terminal for remote on/off (24V control signal). The unit also provides a green LED (DC OK) and a red LED (overload).
Standards and Certifications
The 6SY7000-0AC80 complies with UL 508, CSA C22.2, CE, and RoHS. It has a MTBF of >200,000 hours at 40°C. The unit is also approved for marine applications (DNV GL).
Compatibility
This power supply is a direct replacement for Siemens part 6SY7000-0AC80 used in SIMOREG DC master drives (6RA70 series) and SIMADYN D control cabinets. It can also be used as a general 24V/20A power source for any PLC or industrial control system.
Typical Applications
Supplying control voltage for large PLC racks (S7-400), I/O modules, and DC drives. The high 20A capacity is suitable for systems with many solenoid valves or large relay banks.
Maintenance
The fan has a lifetime of 40,000 hours at 40°C; replacement fan kit (6SY7000-0FA10) is available. The input fuse (6.3A, 5x20mm) is located on the rear and is user-replaceable.
Ordering and Documentation
Siemens order number: 6SY7000-0AC80. The unit comes with terminal covers and a quick start guide. Manual: SIMOREG Power Supply Module (6SY7000) Manual (C98130-A7455).
