Part Number: 778572-64
The National Instruments 778572-64 is a PXI-2564 SPST Relay Module equipped with 16 electromechanical, non-latching relays, each capable of handling up to 5 Amperes. This module supports safe maximum switching voltages of 150 volts AC or 150 volts DC between individual channels, as well as between channels and ground, with a CAT II clearance for suitable application in environments with moderate transient overvoltage, such as local electrical distribution systems. Each channel can manage a power switching capability of up to 750 VA, 150 watts at 30 volts DC, and 30 watts at 150 volts DC. The module guarantees reliable performance with a minimum switching load of 150 mA at 5 volts and allows simultaneous operation of all channels while maintaining a maximum temperature of 55 °C.

Control inputs are managed through 8 PXI trigger lines, allowing for individual addressing to facilitate activities such as measurement initiation, data acquisition synchronization, or external device triggering. The module requires a minimum input trigger pulse width of 150 nanoseconds, while the output trigger pulse width is adjustable through software settings, ranging from 1 microsecond to 62 microseconds, providing flexibility for diverse applications. The relays exhibit swift response times, with a switching duration of approximately 10.4 milliseconds from open to closed and vice versa. The robust design ensures a mechanical life expectancy of up to 20 million cycles and an electrical life of around 100,000 cycles at full load. With compact dimensions of 21.6 × 2.0 × 13.0 cm (8.5 × 0.8 × 5.1 in.) and a weight of approximately 267 grams, the 778572-64 module is both lightweight and space-efficient, making it an effective solution for various automation applications.