Lauer 047/00 Power Supply Module

The Lauer 047/00 is a robust power supply module engineered for industrial automation environments. It converts AC mains voltage into a regulated 24 V DC output, providing reliable power to controllers, sensors, actuators, and other field devices. Its compact DIN-rail mountable design saves valuable cabinet space, while built-in protection circuits ensure safe operation even under harsh electrical conditions. This module is an essential component for distributed control systems requiring stable and noise-free DC power.

Technical Specifications

Input Voltage: 85–264 V AC (single phase) or 120–370 V DC, frequency 47–63 Hz.
Output Voltage: 24 V DC nominal, adjustable ±10% via potentiometer.
Output Current: 2.0 A continuous (48 W), peak 2.8 A for 5 seconds.
Efficiency: >89% at full load, low standby power<0.5 W.
Protection: Short-circuit (hiccup mode), overvoltage (clamp at 28 V), overtemperature (shutdown with auto-recovery).
Ripple & Noise:<50 mVp-p (20 MHz bandwidth).
Hold-up Time: >25 ms at full load.
Operating Temperature: -10 °C to +60 °C (derating above 50 °C).
Storage Temperature: -25 °C to +85 °C.
Humidity: 5% to 95% non-condensing.
Mounting: 35 mm DIN rail (EN 60715), snap-on mechanism.
Dimensions: 90 x 65 x 115 mm (H x W x D).
Weight: 0.55 kg.
Terminals: Screw-type, suitable for 0.5–2.5 mm² wire.
LED Status: Green (output OK), Red (fault).
DC OK relay contact (NO/NC).

Functional Features

The 047/00 incorporates advanced switch-mode technology with active power factor correction (PFC) to minimize harmonic distortion and improve power quality. The output is fully regulated and isolated from the input, providing galvanic separation for safety. The module can be paralleled with identical units for higher current or redundancy using an optional OR-ing diode module. The built-in soft-start circuit limits inrush current during power-up, protecting upstream circuit breakers.

Configuration is straightforward: the output voltage can be fine-tuned using the front-panel potentiometer, and the unit automatically adjusts for input variations. The power supply is certified for use in industrial control cabinets and meets stringent EMC requirements, ensuring compatibility with sensitive electronic equipment.

Installation Guidelines

Mount the module on a standard 35 mm DIN rail in a vertical orientation for optimal convection cooling. Allow at least 50 mm of free space above and below for airflow. Connect the AC input wires (L, N, and ground) to the designated terminals, using a 2.5 mm² wire and a 4 A circuit breaker. For DC input, connect + and – accordingly. The output terminals are labeled +V and –V; use twisted pair cables to reduce voltage drops. The DC OK relay can be wired to a PLC input for alarm monitoring.

Ensure the grounding terminal is connected to the main protective earth. Do not install near heat sources or in direct sunlight. Maintain a 10 mm gap between multiple units.

Operating Conditions

This power supply is designed for indoor operation in pollution degree 2 environments. Ambient temperature should not exceed 60 °C, with derating of 2.5% per °C above 50 °C. The unit can withstand vibration of 0.5 g (10–150 Hz) and shock of 10 g (11 ms). The electrolytic capacitors have a typical lifespan of >100,000 hours at 40 °C.

Applications

Powering PLCs, distributed I/O modules, HMI panels, sensors, and small actuators in packaging, material handling, and machine tool industries. Also suitable for building automation and HVAC controls.