PXIe-2527

The NI PXIe-2527 is a high-voltage, high-power multiplexer switch module designed for the PXI Express platform. It is engineered for applications that require a combination of high-channel density and the ability to handle significant voltage and current. Software-configurable as a 32-channel 1-wire multiplexer or a 16-channel 2-wire multiplexer, this module serves as the primary power-switching interface for automotive, aerospace, and industrial energy systems where signal integrity and high-voltage isolation are non-negotiable.

1. Ключевые технические характеристики

Количество каналов: 32 (1-wire) or 16 (2-wire) Топология: Программно-конфигурируемый мультиплексор Тип реле: Электромеханический (нефиксирующийся) Максимальное коммутационное напряжение: 300 VDC / 300 VAC (CAT I) Максимальный коммутируемый ток: 2.0 А (на канал) Максимальная коммутируемая мощность: 60 ВА / 62,5 ВА Сопротивление пути: < 0.5 Ω (Initial) Скорость переключения: 145 циклов в секунду Шинный интерфейс PXI Express (Gen 1 x1)

2. Подробное техническое описание

High-Voltage and High-Current Capacity The defining characteristic of the PXIe-2527 is its robust power handling. While many high-density multiplexers are limited to 100V or 150V, the PXIe-2527 supports up to 300V. Additionally, its 2A current capacity allows it to switch small loads, power supplies, and high-level signals that would damage standard signal-level switches. This makes it a “universal” multiplexer capable of handling both low-level sensor data and high-level power rails.

Advanced PXI Express Synchronization As a PXIe module, the PXIe-2527 utilizes the advanced timing and triggering capabilities of the PXI Express backplane. It supports hardware-timed scanning, allowing the switch to cycle through its scan list based on triggers from a PXIe DMM or digitizer. This eliminates the latency inherent in software-controlled switching, ensuring that measurements are taken at the exact moment the relay has settled, maximizing test throughput and deterministic timing.

Reliability and Health Tracking For critical manufacturing and validation environments, the PXIe-2527 includes an integrated relay counter. Every time a relay is activated, the count is stored in non-volatile memory on the module. Through the NI-SWITCH driver, engineers can monitor the wear on each of the 32 relays. This enables predictive maintenance, allowing for module replacement before a mechanical failure occurs, which is essential for maintaining 24/7 production line uptime.

3. Сценарии использования и применения

Power Supply and Battery Validation In EV battery and power supply testing, the PXIe-2527 is used to route various power rails and cell voltages to measurement instruments. Its 300V rating provides the necessary safety margin for testing medium-voltage battery stacks and industrial power converters.

Automotive ECU Functional Test The module is frequently used in ECU testers to simulate various high-level sensor inputs and to route power-on signals. Its 2A capacity allows it to drive typical automotive solenoids and relays directly during functional verification.

Industrial Control and Energy Monitoring For monitoring industrial machinery or solar power systems, the PXIe-2527 acts as a rugged front-end. Its 2-wire configuration is perfect for differential measurements of thermocouples and high-voltage sensors in electrically noisy industrial environments.

4. Сравнение продуктов и рекомендации

NI PXIe-2527 (Идеальный выбор) 32 channels, 300V/2A. Best for applications requiring higher voltage and current handling at moderate channel counts.

NI PXIe-2524 (The Density Choice) 128 channels, 150V/1A. Best for high-channel-count sensor logging where voltages do not exceed 150V and space is the primary constraint.

NI PXIe-2529 (The Matrix Choice) 128 crosspoints, 150V/1A. Best for applications requiring any-to-any connectivity (matrix) rather than sequential signal routing (multiplexer).

Резюме

The NI PXIe-2527 is a robust and versatile switching solution for engineers who refuse to compromise on power capacity or precision. By combining 300V/2A ratings with the high-speed synchronization of PXI Express, it provides a stable foundation for the most demanding automated test environments. We offer professional technical support for high-voltage system integration and support project pricing for large-scale production deployments and multi-module upgrades.