- 8 nonlatching mechanical relay outputs, 150 VAC/DC or 60 VDC
- 2 A switching current, 60 W switching power
- 8, 60 V channel-to-channel isolated digital inputs
- NI-DAQmx measurement services with configuration utility for easy setup
- Prog. power-up states, watchdog timers, change detection, prog. input filters
- Connectivity to a range of low-cost, 37-pin accessories
- 24 V logic, sinking or sourcing inputs
The National Instruments 6520/21 are industrial digital I/O boards with eight 150 VAC/DC (NI 6521) or 60 VDC (NI 6520) channels of relay outputs with maximum switching power of 60 W and eight ±30 V digital inputs with 60 V channel-to-channel isolation and industry-standard 24 V logic levels. The digital inputs offer connectivity to both sinking and sourcing signals. NI 6521 is a UL Listed devices with 60 V continuous and 620 V withstand (5s) isolation. For added safety PCI-6521 provides insulated covers on both sides of the board and requires a keyed connector. For added reliability, the NI 6520/21 provide watchdog timers to help recover from a variety of computer and application faults and also feature programmable power-up states, digital filtering, and change detection for optimal control over your application. NI 6520/21 offer a 37-pin D-Sub connector for connectivity to National Instruments’ wide offering of low-cost accessories. NI 6520/21 take advantage of NI-DAQmx measurement services software to help you achieve shorter setup times and more productivity.
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