PIL 40-100 series Matrix SPDT Module Card featuring 83 SPDT (single-pole double-throw) electromagnetic relays, they represent the highest density 2A SPDT PXI switching modules in PI company's product line.
Originally designed for the medium-power, high-density switching needs of the aerospace and defense sectors, it served as a higher-density alternative to the previous 52 SPDT module (model 40-139). The 40-100-001 Matrix SPDT Module Card module uses a single-slot 3U PXI package, with a maximum switching current of 2A (supporting both hot and cold switching), a maximum switching voltage of 200VDC/140VAC, and a maximum power of 60W. Signal connections are achieved through a front-panel-mounted 500-pin SEARAY high-density connector. Pickering also provides standard cable solutions that convert this connector to D-type connectors, IDC connectors, and unterminated options. Typical applications of this module include automotive testing, aerospace testing, military testing, and battery/power cell testing.
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The PIL 40-100 series Matrix SPDT Module Card was developed out of the urgent need in the aerospace and defense testing fields for a higher-density 2A switching solution. In Pickering's PXI switch module product portfolio, the 40-100 series is explicitly categorized as a "high-density, medium-power (2A to 5A) general-purpose switch," alongside the 40-121 (switch protection type), positioning it in the high-density, medium-power range of the density-power matrix
| Type | Description |
| Relay configuration | 83 x SPDT, the highest density among current Pickering 2A SPDT products |
| Relay type | Electromagnetic relay (EMR), palladium-ruthenium forked contacts(Palladium-Ruthenium Gold-Covered Bifurcated Contacts) |
| Switching capacity | 2A hot or cold switching, 200VDC/140VAC, 60W maximum power |
| Connector | 500-pin SEARAY high-density connector (front panel mount) |
| Installation method | Through-hole mounting of relays simplifies on-site maintenance |
| Platform compatibility | Supports PXI chassis and LXI modular chassis |
| Driver support |
Kernel,IVI,VISA driver,support Windows and Linux |
The core differentiating advantage of the 40-100 series lies in its industry-leading SPDT relay density. Integrating 83 SPDT relays in a single-slot 3U PXI module, it far surpasses the density of other 2A modules in the same series. Compared to its predecessor, the 40-139 (52 x SPDTs), the 40-100 offers approximately 60% more SPDT relays while maintaining the same 2A switching capability.This high-density design allows the test system to implement a larger-scale signal switching network within a limited PXI chassis space.
This module uses palladium-ruthenium gold-coated bifurcated contact electromagnetic relays, combining the wear resistance of palladium-ruthenium alloys with the low contact resistance of gold coatings. The bifurcated contact design provides higher contact reliability, making it particularly suitable for medium-power signal switching scenarios. Through-hole mounting allows for easy replacement of individual relays without replacing the entire module during maintenance, significantly reducing system maintenance costs and downtime.
Innovation of Key Products in The Same Series - PIL 40-100 Series Matrix SPDT Module Card:
| Type | Relay Configuration | Relay Type | Connector | Position |
| 40-131 | 16/32 x SPDT | EMR | 78-pin D-type | Low density and low cost |
| 40-132 | 16/32 x SPST | EMR | 78-pin D-type | Low density and low cost |
| 40-136 | 16/32 x SPDT/DPDT | EMR | 78-pin D-type | Low density DPDT |
| 40-139 | 52 x SPDT / 80 x SPST | EMR | 160-pin DIN 41612 | Medium Density 2A |
| 40-139A | 52 x SPDT / 80 x SPST / 40 x DPST / 26 x DPDT | EMR | 160-pin DIN 41612 | Medium density 2A (upgraded version, PXI/PXIe) |
| 40-137 | 16/32/39 x SPST | EMR | 37/78-pin D-type | 2A/5A Power Relay |
| 40-100 | 83 x SPDT | EMR | 500-pin SEARAY | Ultra-high density 2A |
The 40-100 series is a universal relay switch module. Its 83 SPDT relays are all in an uncommitted configuration, that is, the common terminal (C), normally closed terminal (B) and normally open terminal (A) of each relay are independently led to the front panel connector. Users can freely build a switching network according to their needs.This non-committal design gives users maximum flexibility:
The 40-100 module supports multiple system integration methods:
| Items | 40-100-001 | 40-139A-201 | 40-132A-101 | 40-137-201 |
| Relay configuration | 83 x SPDT | 52 x SPDT | 16 x SPST | 39 x SPST |
| Maximum current | 2A | 2A | 2A | 2A |
| Maximum DC voltage | 200V | 300V | 300V | 110V |
| Maximum AC voltage | 140V | 250V | 250V | 250V |
| Maximum power | 60W | 60W | 60W | 60W |
| Connector | 500-pin SEARAY | 160-pin DIN 41612 | 78-pin D-type | 78-pin D-type |
| Platform | PXI | PXI/PXIe | PXI/PXIe | PXI |
| Relay type | EMR | EMR | EMR | EMR |
| Typical operation time | / | 6ms | 3ms | 3ms |
The 40-100-001 significantly outperforms the 40-139A and 40-132A (300VDC) in SPDT relay density (83 vs 52), but its maximum voltage (200VDC) is lower than the 40-139A and 40-132A (300VDC). This is because the SEARAY connector has a smaller pin pitch, resulting in a correspondingly lower withstand voltage. In applications where 300V high-voltage switching is not required, the 40-100-001 offers higher channel density and better space utilization.
| Parameter | Specification |
| Operating temperature | 0 °C to 50 °C |
| Operating humidity | Up to 90% non-condensation |
| Working altitude | Max 5000m |
| Storage temperature | -20℃ to 75℃ |
| Storage humidity | Up to 90% non-condensation |
| Store altitude | Max.15000m |
It provides three main Windows drivers for the 40-100-001 and the entire System 40 PXI module series, allowing users to choose according to their system requirements.
| Driver type | Name | Description | Application |
| IVI driver | pi40iv | The VISA-based IVI (Interchangeable Virtual Instrument) driver integrates well with LabWindows/CVI and LabVIEW, and is compatible with NI Switch Executive | requiring IVI compliance and using the NI development environment |
| VISA Driver | pipx40 | Drivers compliant with the VISA standard integrate seamlessly with LabVIEW and LabWindows/CVI, and are typically faster than IVI drivers for non-IVI requirements | using the NI VISA framework that require fast operation speeds |
| Direct I/O Driver | Pilpxi | It directly accesses the card without using the VISA layer, functions similarly to the PIPX40, and supports a general programming environment | Applications that do not rely on NI VISA and use general development environments such as Visual C++/VB |
The 40-100-001 driver supports the following programming environments and development tools
| Programming environment | Supported drivers |
| National Instruments LabVIEW | Pi40iv, pipx40 |
| National Instruments LabVIEW RT | Pipx40, pi40iv |
| National Instruments LabWindows/CVI | Pi40iv, pipx40 |
| Microsoft Visual Studio (VB, C++, C#) | Pilpxi, pipx40, pi40iv |
| Borland C++ | Pilpxi, pipx40 |
| Python | Pilpxi, pipx40 |
| MATLAB / Simulink | Call Via Driver API |
| Real-time Operating System | via VISA Driver |
When the 40-100-001 is installed in a Pickering LXI modular chassis, the following additional control methods are also supported:
| Control method | Description |
| Piplx driver | LXI extension driver based on PILPPXI, adding IP address addressing functionality |
| NET driver | Native .NET interface, suitable for .NET programming environments |
| SOAP Interface | Web service interface supports remote control across multiple platforms and languages |
| SSH Interface | Remote command-line access control, or programmatic control via software packages |
| Web Browser | Manual control via LXI Web interface |
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FAQ:
Q: After inserting the expansion card into the PXI/LXI chassis, Windows Device Manager or testing software cannot find the expansion card. How to fix this?
A:
Q: Why does hard-coding the physical board address in the test program cause it to fail when changing the slot or upgrading the system?
A: The hardware base address (Bus/Slot address) of the PXI/PCI switch board is dynamically allocated during computer startup and PCI bus enumeration. Hardcoding the physical address in the code is strongly discouraged. Best practice is to use Pickering Explorer or NI MAX software to bind a fixed virtual instrument name (such as Alias/Logical Name) to the board, and then directly call this alias in the code to achieve slot independence.
Q: The 40-100 module is rated to support 2A current. Why is it that the hardware is easily damaged or stuck together when switching to a lower current?
A: This text confuses hot switching with cold switching: The 40-100 series circuit allows a maximum hot switching current of 2A. However, if the circuit contains a very large transient capacitive load (such as an undischarged capacitor) or an inductive load (such as a transformer or motor), the surge current at the moment of closure will far exceed 2A, easily causing arcing or direct sticking of the relay contacts.
Solution: The recommended solution is to use a "cold switching" mode (first disconnect the physical power supply of the test source -> the relay switches -> the power is turned back on). If it is an inductive load, a freewheeling diode or an RC snubber circuit must be connected in parallel at the external cable end.
Q: With high-density 500-pin connectors having too many pins, how can I efficiently troubleshoot whether a specific relay is faulty?
A: The 40-100 series fully supports Pickering's official eBIRST switch system diagnostic testing tool. Without disassembling the board, simply insert the dedicated eBIRST test connector into the front panel, run the diagnostic software, and the tool will automatically poll and test the contact resistance of each channel. It will then graphically locate and mark on the screen which relay number has suffered physical damage or excessive contact resistance, greatly simplifying the maintenance process.
Ready to integrate reliable SPDT Module control into your system? Our team is here to help you select the right configuration and provide ongoing support.
Contact our technical specialists at manager03@mxtdinfo.com / manager02@mxtdinfo.com for detailed specifications, pricing information, or to discuss your custom requirements. We're committed to delivering the perfect PIL 40-100 Series Matrix SPDT Module Card solution for your application needs.
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