Lauer 035/18F LS Systems Power Supply

The Lauer 035/18F is a high-reliability power supply unit developed for LS Systems integration. It delivers a regulated 24 V DC output with a current capacity of 1.8 A, suitable for powering control systems, sensors, and communication modules. Its compact metal housing and wide input voltage range make it ideal for industrial environments with fluctuating mains power. The unit features built-in short-circuit, overvoltage, and overtemperature protection, ensuring uninterrupted operation in demanding conditions.

Technical Specifications

Input Voltage: 85–264 V AC (47–63 Hz) or 110–370 V DC.
Output Voltage: 24 V DC ±2%, adjustable via trimmer.
Output Current: 1.8 A continuous (43 W), peak 2.5 A for 10 seconds.
Efficiency: >89% at nominal load.
Ripple & Noise:<60 mVp-p.
Hold-up Time: >25 ms at full load.
Protection: Short-circuit (foldback current limiting), overvoltage (crowbar at 28 V), overtemperature (shutdown with auto-recovery).
Operating Temperature: -15 °C to +60 °C (derating above 50 °C).
Storage Temperature: -25 °C to +85 °C.
Humidity: 5% to 95% non-condensing.
Mounting: DIN rail or chassis mount with screw holes.
Dimensions: 120 x 70 x 110 mm (H x W x D).
Weight: 0.65 kg.
Terminals: Screw-type, 0.5–2.5 mm².
LED Indicators: Green (output OK), Red (fault).
Remote On/Off: Optional via terminal block.

Functional Features

The 035/18F incorporates active power factor correction (PFC) to comply with harmonic standards and improve efficiency. It includes a DC OK relay contact (NO/NC) for remote status monitoring. The unit features soft-start to limit inrush current, and it can be paralleled with identical units for redundancy using external diodes. The output voltage can be adjusted by ±10% using a front-panel potentiometer.

The design emphasizes reliability with long-life electrolytic capacitors and a fanless cooling concept. The unit is fully encapsulated to protect against dust and moisture, making it suitable for harsh industrial settings.

Installation Guidelines

Mount the power supply on a DIN rail or securely with screws. Ensure vertical orientation for proper convection cooling. Connect the input (L, N, ground) with a 2.5 mm² wire and a 4 A circuit breaker. For DC input, connect + and – accordingly. Connect the output terminals (+V, -V) to the load using twisted pair cables. Wire the DC OK relay to a monitoring system if needed. Ground the unit to the main earth.

Maintain at least 60 mm clearance above and below for airflow. Do not cover the ventilation slots.

Operating Conditions

This power supply is rated for industrial indoor use with ambient temperatures from -15 to +60 °C. Derate output current by 2.5% per °C above 50 °C. Vibration tolerance 0.5 g (10–150 Hz), shock 10 g (11 ms). The mean time between failures (MTBF) exceeds 500,000 hours at 40 °C.