Pickering Interfaces has launched high-voltage programmable resistor modules housed in compact single-slot PXI and PXIe form factors. The new 40-230 (PXI) and 42-230 (PXIe) simulation modules offer a simple solution for applications requiring voltage handling up to 1.2 kV.
This new range of programmable resistor modules is one of a few PXI or PXIe modules that can handle voltages up to 1.2 kV, which make it suitable for high-voltage environments like electric vehicles (EVs), aerospace, or power electronics test benches, according to the company.
(Source: Pickering Interfaces)
The new programmable resistor modules are available in 70 standard builds. These include four single-channel devices that feature a variety of resistance ranges and resolution capabilities, used in simulating resistive loads and fault conditions for high-voltage devices-under-test (DUT) in sectors such as automotive, aerospace, and energy.
The 40/42-230 programmable resistor modules play an important role in simulating resistive loads and fault conditions for high-voltage DUTs such as EV power inverters, battery management systems, and aerospace components, Pickering said. These modules can be used for tasks such as voltage isolation check testing, ensuring compliance with safety standards such as ISO 6469 and IEC 60664.
Engineers can emulate resistance sensor values (such as thermistors and RTDs) in high-voltage environments for safe testing without the use of sensor hardware. When used in the hardware-in-the-loop simulation testing of electronic control units, each channel of the 40/42-230 can be set to short and open circuit conditions to verify the controller’s response to a faulty sensor or connection.
These modules, with up to four channels available in a single slot, offer multi-channel flexibility in a PXI or PXIe form factor. Key specifications include a wide resistance range from 1 Ω to 76.8 MΩ and resistance resolution down to 0.125 Ω.
In addition, these high-voltage modules feature a hardware interlock for greater safety. When activated, the interlock will return all relays to their default unpowered state (assuming the switches are fully functional), Pickering said, and provide error notification via the software interface.
The interlock also can be daisy-chained between additional hardware interlock-enabled modules. This allows one signal to disable multiple cards.
Software control uses resistor value calls. The module calculates the resistance setting closest to the requested value and sets that value. An optional cable assembly may be attached to the module in place of the DUT for simple calibration using a digital multimeter to verify the resistor channels.
Drivers are supplied for Windows, Linux, and real-time operating systems. All standard products include a three-year warranty and long-term product support.
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