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PXI-7901

PXI cPCI 3U 16*Chan 2 Form C 2A Relay Card
806,00 EUR

including VAT 959.14 EUR

  • Manufacturer Adlink Technology Inc.
  • Category: DIO Isolated PXI/PXIe/cPCI
  • The ADLINK PXI-7901 is a high-performance, general-purpose switch module designed for PXI and CompactPCI systems. It provides 16 independent single-pole double-throw (SPDT) non-latching relays, each capable of switching up to 3 A at 250 VAC or 220 VDC. The module is engineered for flexible signal routing, device control, and automation applications in industrial, laboratory, and automated test environments.
- PXI and CompactPCI Compliance:
Fully compliant with PXI Specification Rev. 2.2 and CompactPCI (PICMG 2.0 R3.0) standards, ensuring interoperability with PXI-based test and measurement systems.

- Hot-Swap Support:
Conforms to PICMG 2.1 R2.0 CompactPCI Hot Swap specifications, allowing module replacement without system shutdown.

- 16 Independent SPDT Relays:
Each channel provides one Form C (SPDT) contact configuration, enabling flexible switching between normally open (NO) and normally closed (NC) states.

- High Switching Capacity:
Supports up to 3 A switching and carrying current, with maximum ratings of 220 VDC or 250 VAC and 60 W / 50 VA power handling.

- Fast Operation:
Relay operate and release times are ≤5 ms, with bounce time ≤3 ms, supporting up to 125 operations per second.

- Onboard 1K-Sample Scan List:
Enables deterministic scanning and automated relay pattern sequencing with programmable delay and trigger control.

- PXI Trigger and Synchronization:
Supports PXI trigger bus and star trigger for multi-module synchronization without external wiring.

- Safety and Reliability Features:
Includes programmable emergency shutdown, watchdog timer (1 ms–420 s), and relay safety status configuration for fail-safe operation.

- Auxiliary Digital I/O:
Eight 3.3 V/TTL (5 V tolerant) digital I/O lines for general-purpose control and handshaking with external instruments.

- Software Programmability:
Fully software-controlled operation with ADLINK’s ADL-SWITCH driver and API support for Windows platforms.

- Operating System and Software Support:
Compatible with Windows 2000/XP/Vista/2003; supports VB, VC++, BCB, Delphi, and DAQBench environments.

Country of origin: Taiwan R.O.C.

Customs tariff number: 8473 3020 000

Comprehensive Product Summary: ADLINK PXI-7901 16-Channel SPDT Relay Module




### 1. Product Overview

Product Name: PXI-7901
Model Number: PXI-7901
Series: PXI / CompactPCI 3U General-Purpose Switch Modules
Article Number: PXI-7901
Manufacturer: ADLINK Technology Inc.
Product Type: 16-Channel General-Purpose SPDT (1 Form C) Relay Module
Form Factor: PXI 3U Eurocard, CompactPCI compliant
Manufacturer Website: [www.adlinktech.com](http://www.adlinktech.com)

The ADLINK PXI-7901 is a high-performance, general-purpose switch module designed for PXI and CompactPCI systems. It provides 16 independent single-pole double-throw (SPDT) non-latching relays, each capable of switching up to 3 A at 250 VAC or 220 VDC. The module is engineered for flexible signal routing, device control, and automation applications in industrial, laboratory, and automated test environments.




### 2. Key Features

- PXI and CompactPCI Compliance:
Fully compliant with PXI Specification Rev. 2.2 and CompactPCI (PICMG 2.0 R3.0) standards, ensuring interoperability with PXI-based test and measurement systems.

- Hot-Swap Support:
Conforms to PICMG 2.1 R2.0 CompactPCI Hot Swap specifications, allowing module replacement without system shutdown.

- 16 Independent SPDT Relays:
Each channel provides one Form C (SPDT) contact configuration, enabling flexible switching between normally open (NO) and normally closed (NC) states.

- High Switching Capacity:
Supports up to 3 A switching and carrying current, with maximum ratings of 220 VDC or 250 VAC and 60 W / 50 VA power handling.

- Fast Operation:
Relay operate and release times are ≤5 ms, with bounce time ≤3 ms, supporting up to 125 operations per second.

- Onboard 1K-Sample Scan List:
Enables deterministic scanning and automated relay pattern sequencing with programmable delay and trigger control.

- PXI Trigger and Synchronization:
Supports PXI trigger bus and star trigger for multi-module synchronization without external wiring.

- Safety and Reliability Features:
Includes programmable emergency shutdown, watchdog timer (1 ms–420 s), and relay safety status configuration for fail-safe operation.

- Auxiliary Digital I/O:
Eight 3.3 V/TTL (5 V tolerant) digital I/O lines for general-purpose control and handshaking with external instruments.

- Software Programmability:
Fully software-controlled operation with ADLINK’s ADL-SWITCH driver and API support for Windows platforms.

- Operating System and Software Support:
Compatible with Windows 2000/XP/Vista/2003; supports VB, VC++, BCB, Delphi, and DAQBench environments.




### 3. Technical Specifications

Relay Characteristics:
- Channels: 16 independent SPDT (1 Form C), non-latching
- Max Switching Current: 3 A
- Max Carrying Current: 3 A
- Max Switching Voltage: 220 VDC, 250 VAC
- Max Switching Power: 60 W (DC) / 50 VA (AC)
- Contact Resistance: ≤150 mΩ
- Operate Time: ≤5 ms
- Release Time: ≤5 ms
- Bounce Time: ≤3 ms
- Mechanical Life: ≥10⁸ operations
- Electrical Life: ≥10⁵ operations (0.4 A @ 125 VAC resistive load)
- Data Transfer: Programmed I/O

Auxiliary Digital I/O:
- Channels: 8 bidirectional lines
- Logic Level: 3.3 V/TTL compatible, 5 V tolerant
- Function: Programmable input/output with tri-state control

Handshaking and Triggering:
- Programmable polarity and logic level (3.3 V/TTL, 5 V tolerant)
- Trigger Input Sources: AUX1, PXI trigger bus, PXI star trigger input
- Scanner Advanced Destinations: AUX0, PXI trigger bus, PXI star trigger output

Safety Functions:
- Emergency Shutdown:
Logic level 3.3 V/TTL (active low), configurable via AUX2/SHDNn or PXI trigger bus
- Watchdog Timer:
32-bit counter, 10 MHz base clock, programmable overflow interval (1 ms–420 s)

General Specifications:
- I/O Connector: 62-pin D-sub male
- Power Requirements (all relays ON):
+5 V @ 700 mA, +3.3 V @ 400 mA
- Dimensions (excluding connectors): 160 mm (L) × 100 mm (H)
- Operating Temperature: 0°C to 55°C
- Storage Temperature: -20°C to 70°C
- Relative Humidity: 5%–85% non-condensing
- EMC/EMI Compliance: CE, FCC Class A




### 4. Functionality

The PXI-7901 functions as a general-purpose relay switching module for signal routing, device control, and automation. Each of its 16 SPDT relays can connect a common terminal (COM) to either a normally open (NO) or normally closed (NC) contact, enabling flexible switching configurations.

Operating Modes:
- Direct-Update Mode:
Relays respond immediately to software commands for real-time control.
- Auto-Scan Mode:
Uses onboard 1K scan list memory to execute pre-defined relay patterns with programmable delays and trigger synchronization.

Trigger and Synchronization:
- Supports PXI trigger bus and star trigger for precise timing coordination across multiple modules.
- Handshaking signals (Trigger In and Scanner Advanced) enable synchronization with external instruments such as digital multimeters (DMMs).

Use Cases and Applications:
- Industrial ON/OFF control and automation
- Signal routing in automated test equipment (ATE)
- External high-power relay driving
- Laboratory and process automation
- Limit switch monitoring and contact status sensing
- Integration with A/D and D/A modules for data acquisition systems

Compatibility:
- PXI and CompactPCI chassis (3U form factor)
- ADLINK software ecosystem (ADL-SWITCH, DAQBench)
- Windows-based control systems




### 5. Components & Accessories

Included Items:
- PXI-7901 16-CH SPDT Relay Module
- User’s Manual
- ADLINK Software CD (includes ADL-SWITCH drivers and utilities)
- ADL-SWITCH User’s Guide

Optional Accessories:
- TB-6201-01: General-purpose terminal board with 62-pin D-sub female connector for direct wiring.
- ACL-10262: 62-pin D-sub male/female cable, 1-meter length, for connection between PXI-7901 and terminal board.

Connectors:
- Front Panel: 62-pin D-sub male connector for relay and I/O signals
- Rear: PXI J1/J2 connectors for backplane communication




### 6. Installation & Setup

Requirements:
- PXI or CompactPCI chassis with available 3U slot
- Compatible PXI controller or embedded PC
- Proper grounding and anti-static handling during installation

Installation Steps:
1. Power off the PXI chassis (unless hot-swap is supported).
2. Align the PXI-7901 module with the chassis card guide.
3. Slide the module into the slot until resistance is felt.
4. Engage the ejector latch to seat the module fully.
5. Tighten front panel screws to secure the module.
6. Power on the chassis; the module will be recognized automatically (Plug and Play).

Hot-Swap Procedure:
- Supported under PXI platforms compliant with PICMG 2.1 R2.0.
- Microsoft Embedded XP supports native hot-swap; other OSs may require additional drivers.

Configuration:
- Use ADL-SWITCH software to configure relay states, scan lists, triggers, and safety functions.
- Connect external devices via the TB-6201 terminal board or direct D-sub cabling.




### 7. Performance & Capabilities

Switching Performance:
- Up to 125 relay operations per second with full settling.
- Operate/Release time ≤5 ms ensures rapid switching.
- Contact bounce ≤3 ms for stable signal transitions.

Capacity and Load Handling:
- 3 A maximum current per channel, suitable for moderate power loads.
- Supports both AC (up to 250 V) and DC (up to 220 V) switching.

Efficiency and Reliability:
- Mechanical endurance exceeding 100 million operations.
- Electrical endurance exceeding 100,000 operations under rated load.
- Onboard FPGA ensures deterministic timing and precise control.

Limitations:
- Non-latching relays (requires continuous power to maintain state).
- Not intended for high-voltage or high-current power switching beyond rated limits.




### 8. Standards & Compliance

PXI and CompactPCI Standards:
- PXI Specification Rev. 2.2 compliant
- CompactPCI (PICMG 2.0 R3.0) compliant
- CompactPCI Hot Swap (PICMG 2.1 R2.0) compliant

Electrical and Safety Standards:
- CE and FCC Class A certified for electromagnetic compatibility
- Designed for safety-critical applications with programmable emergency shutdown and watchdog timer

Environmental Compliance:
- Operating temperature range: 0°C to 55°C
- Storage temperature range: -20°C to 70°C
- Humidity tolerance: up to 85% non-condensing

Software and Driver Compliance:
- ADL-SWITCH driver package for Windows 98/ME/NT/2000/XP/Vista/2003
- Supports Microsoft Visual Basic, Visual C++, Borland C++ Builder, and Delphi




### 9. Additional Information

Warranty:
- Standard 2-year limited warranty from ADLINK Technology Inc.
- Covers defects in materials and workmanship under normal use.
- Excludes damage from misuse, improper installation, or environmental factors.

Maintenance:
- Periodic inspection recommended for relay wear and contact integrity.
- Avoid exposure to excessive humidity, dust, or corrosive environments.
- Replace module if relay performance degrades beyond specifications.

Support and Service:
- Technical support via email: service@adlinktech.com
- Telephone: +886-2-82265877
- Fax: +886-2-82265717
- Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan

Software Updates:
- Latest drivers and utilities available from ADLINK’s website.
- Firmware and driver updates may enhance performance and compatibility.

Ordering Information:
- PXI-7901: 16-CH General-Purpose SPDT Relay Module
- TB-6201-01: Terminal Board with 62-pin D-sub Female Connector
- ACL-10262: 62-pin D-sub Cable, 1 m




### Summary

The ADLINK PXI-7901 is a robust, high-precision 16-channel SPDT relay module designed for PXI and CompactPCI systems. It combines fast switching performance, deterministic scan control, and advanced safety features in a compact 3U Eurocard form factor. With its 3 A switching capacity, programmable triggers, and synchronization capabilities, the PXI-7901 is ideal for automated test equipment, industrial control, and laboratory automation applications. Its compliance with PXI and CompactPCI standards ensures seamless integration into modular test systems, while ADLINK’s software ecosystem provides comprehensive control and monitoring capabilities.

The PXI-7901 exemplifies ADLINK’s commitment to reliability, flexibility, and performance in modular instrumentation and automation solutions.