Product Introduction
Земля NI PXI-2522 is a high-density general-purpose PXI relay module designed for automated test equipment (ATE), signal routing, load switching, device control, production testing, and laboratory automation. It provides 53 independent SPDT (Single-Pole Double-Throw) Form C electromechanical relays in a compact single-slot PXI module.
With switching capability up to 2 A and 100 VDC, a switch bandwidth of 51 MHz, low relay contact resistance, low thermal offsets, software-programmable switching, and onboard relay count tracking, the PXI-2522 provides a flexible solution for routing signals and controlling loads in automated PXI test systems.
Product Overview
Земля NI PXI-2522 is a general-purpose relay switching module designed for applications requiring a large number of independent Form C relay channels.
Each of the 53 channels uses an independent SPDT electromechanical armature relay. This architecture allows each relay to connect a common terminal to either a normally open or normally closed contact, providing greater routing flexibility than basic SPST relay modules.
The PXI-2522 is particularly useful in automated test systems where many independent circuits, loads, test points, or control signals must be switched under software control. Typical applications include ATE load switching, DUT routing, heater control, fan control, lighting control, power sequencing, and automated electronic validation.
Key Features
53 Independent Relay Channels
The PXI-2522 provides 53 independent relay channels within a single PXI module.
- 53 independent relay channels
- High-density switching architecture
- Individual software control
- Multi-load switching
- Automated signal routing
Advantage: High relay density helps reduce PXI slot requirements in automated systems containing many independent switching points.
SPDT Form C Relay Configuration
Each PXI-2522 channel uses a Single-Pole Double-Throw Form C relay configuration.
- SPDT relay architecture
- Common terminal
- Normally open contact
- Normally closed contact
- Flexible signal routing
Advantage: SPDT relays allow a signal or load to be switched between two different paths, providing greater routing flexibility than single-throw relay configurations.
2 A Maximum Switching Current
The PXI-2522 supports switching currents up to 2 A DC under applicable operating conditions.
- Up to 2 A switching current
- Load control
- Power circuit switching
- Automated fixture control
- General-purpose relay applications
Advantage: The current capability allows the module to control a broader range of loads than low-current signal-only switching hardware.
100 VDC Maximum Switching Voltage
The PXI-2522 supports DC switching voltages up to 100 V under specified operating conditions.
- Up to 100 VDC switching
- Electronic load routing
- Power supply switching
- Automated DUT connections
- Industrial test applications
Advantage: Provides useful voltage handling capability for general-purpose automated test and control systems.
51 MHz Switch Bandwidth
The PXI-2522 provides switch bandwidth up to 51 MHz, allowing it to route signals beyond basic DC applications.
- 51 MHz switch bandwidth
- DC signal switching
- Low-frequency AC routing
- Measurement signal routing
- Automated test signal switching
Advantage: Supports both general load control and a variety of measurement signal-routing applications.
Non-Latching Electromechanical Relays
The PXI-2522 uses electromechanical, non-latching armature relays.
- Electromechanical relay architecture
- Non-latching operation
- Form C contacts
- Physical circuit isolation
- Коммутация общего назначения
Advantage: Electromechanical relays provide true physical contact switching and are suitable for applications requiring flexible voltage and current handling.
Low On-Resistance
The PXI-2522 relays are designed with low contact resistance to minimize unwanted voltage drop through closed switching paths.
- Low relay on-resistance
- Reduced switching path voltage drop
- Улучшенная целостность сигнала
- Load switching applications
- Precision test routing
Advantage: Low path resistance is useful when switching loads or measurement signals where excessive series resistance could affect system performance.
Low Thermal Offset
The relay architecture is designed to provide low thermal offsets for measurement-oriented switching applications.
- Low thermal EMF
- Precision signal routing
- Low-level measurement switching
- DMM test system integration
- Automated electrical characterization
Advantage: Reduced thermal offset helps minimize relay-induced measurement errors in precision DC measurement systems.
Up to 145 Cycles/s Scan Rate
The PXI-2522 supports relay scanning speeds up to 145 cycles per second under specified conditions.
- Up to 145 cycles/s
- Automated channel sequencing
- Production test switching
- Multi-point measurement routing
- Automated load control
Advantage: Automated relay sequencing can improve test throughput when many switching configurations must be executed repeatedly.
Onboard Relay Count Tracking
The PXI-2522 supports onboard tracking of relay operations to assist with maintenance and lifecycle management.
- Relay cycle tracking
- Preventive maintenance support
- Relay usage monitoring
- ATE maintenance planning
- Improved system reliability management
Advantage: Relay count information can help maintenance teams identify heavily used channels and plan relay replacement before failures affect production testing.
Software-Programmable Switching
Each relay can be controlled programmatically as part of an automated test sequence.
- Software-controlled relay operation
- Automated switching sequences
- TestStand integration
- Интеграция LabVIEW
- Custom ATE software support
Advantage: Switching configurations can be changed automatically according to the requirements of each DUT and test step.
PXI Hybrid Bus Connection
The PXI-2522 uses a PXI Hybrid bus connection for integration into compatible PXI modular test platforms.
- PXI Hybrid bus connection
- Single-slot module
- Modular instrumentation architecture
- Automated test integration
- Scalable switching systems
Advantage: Allows switching functions to be integrated with PXI DMMs, DAQ modules, power supplies, digitizers, and other automated test instruments.
Technical Specifications
| Параметр | Описание |
|---|---|
| Product Type | PXI General-Purpose Relay Module |
| Part Number | 778572-22 |
| Number of Channels | 53 |
| Relay Configuration | SPDT, Form C |
| Тип реле | Electromechanical, Non-Latching |
| Maximum Switching Current DC | 2 A |
| Maximum Switching Voltage DC | 100 V |
| Switch Bandwidth | 51 MHz |
| Maximum Scan Rate | 145 Cycles/s |
| Relay Count Tracking | Supported |
| Bus Connection | PXI Hybrid |
| Module Size | 3U, 1-Slot PXI/cPCI Module |
| Dimensions | 21.6 × 2.0 × 13.0 cm |
| Weight | 192 g |
| Operating Temperature | от 0 °C до 55 °C |
| Storage Temperature | -20 °C to 70 °C |
| Primary Applications | ATE Switching, Load Control, Signal Routing and Automated Test |
Software Ecosystem
The NI PXI-2522 integrates with NI switching and automated test software for relay configuration, routing, sequencing, and system management.
- NI-SWITCH: Provides programmatic control of relay channels and switching operations in compatible NI software environments.
- NI Switch Executive: Provides route-based switch management for building and maintaining larger automated switching systems.
- LabVIEW: Enables development of customized relay control, measurement routing, load switching, and automated test applications.
- TestStand: Allows relay configurations to be incorporated directly into automated validation and production test sequences.
- InstrumentStudio: Can be used within compatible NI test environments for interactive instrument configuration and automation workflows.
Industries
- Automated Test Equipment
- Electronic Manufacturing
- Тестирование полупроводников
- Automotive Electronics
- Аэрокосмическая и оборонная промышленность
- Промышленная автоматизация
- Power Electronics
- Research and Development
Applications
Automated Test Equipment
The PXI-2522 is well suited for ATE systems requiring a large number of independently controlled relay channels.
- DUT signal routing
- Test point selection
- Automated fixture control
- Load connection and disconnection
- Production test sequencing
Load Switching
The 2 A current capability allows the PXI-2522 to control compatible electrical loads within the module’s specified voltage, current, and power limits.
- Load connection
- Power circuit control
- Electronic device switching
- Automated power sequencing
- Test fixture loads
Heater Control
The PXI-2522 can switch compatible heater circuits in automated environmental and device test systems.
- Heater switching
- Temperature test fixtures
- Environmental test systems
- Automated thermal testing
Fan and Lighting Control
NI identifies fan and light control as applications for the general-purpose PXI-2522 relay architecture.
- Cooling fan control
- Lighting control
- Test fixture accessories
- Equipment automation
Signal Routing
The SPDT architecture allows individual signals to be routed between alternative electrical paths.
- Measurement signal selection
- DUT routing
- Alternative signal paths
- Automated measurement systems
- Test fixture multiplexing
DMM Measurement Systems
The PXI-2522 can be combined with a PXI digital multimeter to route multiple DUT signals into a centralized measurement instrument.
- Voltage measurement routing
- Resistance measurement routing
- Multi-point electrical testing
- Automated DMM systems
Production Test Systems
High channel density and programmable switching make the PXI-2522 useful for repetitive production validation.
- End-of-line testing
- Functional testing
- Electronic assembly validation
- Automated pass/fail testing
- Multi-DUT test fixtures
Comparison with Similar PXI Switch Modules
| Модель | Основное различие | Best Application |
|---|---|---|
| NI PXI-2522 | 53-channel SPDT Form C relay module supporting up to 2 A switching current and 100 VDC. | High-density general-purpose relay switching |
| NI PXI-2520 | General-purpose relay switching module designed for automated test and load-control applications with a different relay configuration and channel density. | General-purpose ATE load switching |
| NI PXI-2521 | Related electromechanical relay module providing a different switching topology for automated routing and control systems. | Alternative relay routing configurations |
| NI PXI-2532B | High-density matrix switch architecture designed for systems requiring flexible matrix-style signal routing rather than independent SPDT load switching. | High-density matrix switching |
Recommended Related Products
| NI PXI-2532B | High-density PXI matrix switch for automated systems requiring flexible connection between multiple rows and columns. |
| NI PXI-4070 | PXI digital multimeter that can be combined with relay switching for automated multi-point electrical measurements. |
| NI PXI-6221 | Multifunction PXI DAQ module for systems combining analog measurement, analog output, digital I/O, and relay-controlled signal routing. |
| NI PXI-6225 | High-channel-count analog input DAQ module that can complement the PXI-2522 in large automated measurement systems. |
Why Choose PXI-2522?
- 53 independent relay channels
- SPDT Form C switching configuration
- Electromechanical non-latching relays
- Up to 2 A DC switching current
- Up to 100 VDC switching voltage
- 51 MHz switch bandwidth
- Up to 145 cycles/s scan rate
- Low relay on-resistance
- Low thermal offsets
- Onboard relay count tracking
- PXI Hybrid bus connection
- Single-slot high-density architecture
- Ideal for ATE, load control and automated signal routing
Frequently Asked Questions
What is the NI PXI-2522?
The NI PXI-2522 is a 53-channel general-purpose PXI relay module featuring independent SPDT Form C electromechanical relays for automated signal routing, load control, ATE, and production testing.
How many relay channels does the PXI-2522 have?
The PXI-2522 provides 53 independent relay channels within a single PXI module.
What relay configuration does the PXI-2522 use?
Each PXI-2522 channel uses an SPDT Form C relay configuration. This provides a common terminal that can be switched between normally open and normally closed contacts.
What is the maximum switching current of the PXI-2522?
The PXI-2522 supports a maximum DC switching current of 2 A under applicable operating conditions. The complete voltage, current, and power limitations should always be considered when designing the switching system.
What is the maximum DC switching voltage of the PXI-2522?
The PXI-2522 supports a maximum DC switching voltage of 100 V under specified operating conditions.
What is the bandwidth of the PXI-2522?
The PXI-2522 has a specified switch bandwidth of 51 MHz, allowing it to route both DC and applicable AC measurement signals.
Are the PXI-2522 relays latching?
No. The PXI-2522 uses non-latching electromechanical armature relays.
Does the PXI-2522 track relay usage?
Yes. The PXI-2522 supports onboard relay count tracking, which can help engineers monitor relay usage and develop preventive maintenance schedules for automated test systems.
Can the PXI-2522 be used to control heaters and fans?
Yes. NI specifically identifies compatible ATE loads, heaters, lights, and fans as example applications for the PXI-2522. The connected load must remain within the module’s specified voltage, current, and power limits.
What is the difference between PXI-2522 and PXI-2532B?
The PXI-2522 provides 53 independent SPDT Form C relays and is optimized for general-purpose signal and load switching. The PXI-2532B is a high-density matrix switch designed primarily for creating flexible row-to-column signal-routing configurations. The PXI-2522 is therefore more suitable for independent relay and load-control applications, while the PXI-2532B is better suited for high-density matrix routing.
What is the part number of the PXI-2522?
The NI PXI-2522 is available under part number 778572-22.
Заключение
Земля NI PXI-2522 53-channel SPDT relay module provides a high-density general-purpose switching solution for automated test equipment, production validation, load control, signal routing, and laboratory automation. With 53 independent Form C electromechanical relays, up to 2 A switching current, up to 100 VDC switching voltage, 51 MHz bandwidth, relay count tracking, and PXI system integration, the PXI-2522 is well suited for automated test platforms requiring reliable and flexible relay switching.
