SCHROFF MPS022 VME Rack-Mount Switch-Mode Power Supply Module

Description

1. Overview

The SCHROFF MPS022 is an industrial 6U VMEbus rack-mount switching power supply module launched by nVent SCHROFF. Designed for standard 19-inch cabinets, VME industrial control systems, embedded measurement and control platforms, military and rail transit equipment, it serves as the core power supply unit for VME chassis. Adopting high-frequency switching power supply architecture and active Power Factor Correction (PFC) technology, it supports ultra-wide AC/DC input and provides multiple stable DC outputs. It supplies pure, low-ripple industrial power for VME backplane CPUs, communication cards, I/O modules and IP carrier boards, widely used for legacy VME system power replacement, industrial cabinet power matching and high-reliability equipment power upgrading.

Fully compliant with 6U VME chassis standards, the module natively supports VMEbus power status alarm and feedback functions, equipped with comprehensive over-voltage, over-current, short-circuit and over-temperature multi-level protection. Featuring high conversion efficiency, ultra-low output ripple and excellent anti-interference performance, its industrial wide-temperature design ensures stable operation under harsh temperature, electromagnetic and continuous working conditions, covering high-end scenarios such as industrial measurement and control, aerospace testing, rail transit, semiconductor equipment and military embedded control systems.

2. Technical Features

2.1 Ultra-Wide AC/DC Input for Global Industrial Power Grids

It supports 90～264VAC universal AC input and 130～350VDC wide-range DC input, adapting to global industrial grid voltage fluctuations without additional voltage regulation devices. It effectively avoids equipment restart and unstable power supply caused by grid fluctuation and ensures continuous operation of industrial control systems.

2.2 Active PFC for High Efficiency & Low Harmonic

Built-in active Power Factor Correction circuit suppresses grid harmonics, improves grid utilization and reduces reactive power loss, with a power conversion efficiency over 85%. Compared with ordinary switching power supplies, it features lower grid pollution and higher energy efficiency, complying with industrial energy-saving and EMC standards for long-term cabinet operation.

2.3 Multiple Pure DC Outputs Optimized for VME Systems

Optimized for VME industrial control power demand, it provides multiple precision regulated DC outputs with ultra-low ripple noise (＜100mVp-p). It effectively avoids communication abnormality, data disorder and module crash caused by voltage jitter and clutter interference, perfectly meeting the precision power supply requirements of VME CPUs, communication cards and I/O modules.

2.4 Full-Range Electrical Protection & High Fault Tolerance

Integrated four core protection mechanisms: over-voltage, over-current, short-circuit and over-temperature protection. It automatically cuts off output and locks under fault conditions to prevent power supply and load damage. It recovers automatically after fault elimination without manual reset, suitable for long-term unattended cabinet operation.

2.5 Native VMEbus Signal Interaction & Visual Status Monitoring

Equipped with standard VMEbus power status alarm and feedback functions, it uploads real-time operating status, fault, under-voltage and overload information to the main control system, realizing power fault early warning and traceability, improving the overall operation and maintenance reliability of VME systems.

2.6 Industrial Wide-Temperature Rugged Design for Harsh Conditions

Adopting military-grade power components and reinforced PCB structure, it resists high/low temperature, vibration and electromagnetic interference. The operating temperature range of -20℃～+70℃ ensures stable 7×24-hour continuous operation in complex industrial environments with temperature fluctuation and strong electromagnetic interference.

2.7 Standard 6U Rack Mount & Easy Replacement

Designed per 6U VME chassis standards, it is fully compatible with SCHROFF 19-inch VME cabinets and backplanes. Plug-and-play installation enables direct replacement of legacy power modules without chassis and wiring modification, realizing low-cost and fast power supply upgrading for legacy industrial control systems.

3. Detailed Specifications

3.1 Basic Hardware Parameters

Model: MPS022 (Part No.: 13100-203 / 13100-204)
Manufacturer: nVent SCHROFF (Germany)
Type: 6U VME Rack-Mount Industrial Switching Power Supply
Mounting: Standard 6U VME Chassis Embedded Rack Installation
Rated Power: 224W
Efficiency: ≥85% Full-Load High Efficiency
Output Ripple: ＜100mVp-P Low Noise Pure Output
Core Functions: VME System Power Supply, Active PFC Correction, Power Status Monitoring, Fault Self-Protection, Bus Signal Feedback
Compatible Devices: Full-Series 6U VME Chassis, VME CPU, Communication Modules, I/O Cards, IP Carrier Boards

3.2 Input Electrical Parameters

AC Input Voltage: 90～264VAC Ultra-Wide Adaptive
DC Input Voltage: 130～350VDC Wide-Range Compatible
Input Frequency: 50/60Hz Industrial Power Frequency Adaptive
Power Correction: Built-In Active PFC Circuit, Low Harmonic & High Power Factor
Input Characteristics: Tolerates Grid Fluctuation and Transient Voltage Impact with High Fault Tolerance

3.3 Output Electrical Parameters

Output Mode: Multiple Regulated DC Outputs Dedicated for VME Systems
Main Output Voltage: 22VDC Rated Stabilized Output
Rated Output Current: 2A
Voltage Regulation Accuracy: High-Precision Stabilization, Fast Dynamic Load Response
Output Characteristics: Low Ripple, Low Noise, Zero Voltage Drift for Precision Industrial Card Power Supply

3.4 Protection & Diagnosis Parameters

Protection Functions: Over-Voltage, Over-Current, Short-Circuit, Over-Temperature Protection
Fault Mechanism: Automatic Output Cutoff & Lock, Auto Recovery After Fault Elimination
Diagnosis Functions: VMEbus Power Status Feedback, Overload Alarm, Under-Voltage Monitoring, Over-Temperature Detection
Fault Tolerance: Independent Single-Fault Protection, No Damage to Load Equipment with High System Safety

3.5 Environmental & Mechanical Parameters

Operating Temperature: -20℃～+70℃ Wide-Temperature Continuous Operation
Storage & Transit Temperature: -40℃～+85℃ for Transportation & Storage
Operating Humidity: 5%～95% RH (Non-Condensing), Moisture & Corrosion Resistant
Mechanical Performance: 6U Reinforced Rack Structure, Vibration-Proof & Anti-Loose

Heat Dissipation: Natural Air Convection Cooling, Fan-Less Maintenance-Free Design

4. Operating Principle

After connecting to industrial power grid, the SCHROFF MPS022 completes AC/DC conversion through front-end filtering and rectifier circuits. The built-in active PFC circuit optimizes grid input waveform, suppresses harmonic loss and improves power utilization. After multi-stage processing of high-frequency switching inversion, isolation transformation and precision voltage regulation filtering, it outputs low-ripple, high-stability DC voltage to supply power for VME chassis backplanes and various board cards.

The module real-timely monitors input voltage, output load current, internal temperature and output status during operation. Once abnormalities such as short circuit, overload, over-voltage and over-temperature are detected, it immediately triggers hardware protection to cut off output and lock working status, preventing damage to the power supply and backend VME main control, communication and I/O modules. It automatically resets and resumes normal power supply after faults are eliminated without manual intervention.

Meanwhile, the module generates real-time power operating signals and uploads them to the system main control unit via VMEbus, realizing visual power condition monitoring, fault alarm and operation traceability, ensuring stable, controllable and traceable power supply for the entire VME industrial control system and meeting high-reliability continuous operation requirements.