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NI6521

更新时间: 2022-11-27 11:50:55
品牌 Logo 应用领域
美国国家仪器公司 - NI /
页数 文件大小 规格书
5页 244K
描述
Low-Cost Industrial Digital I/O - 150 V

NI6521 数据手册

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Low-Cost Industrial Digital I/O – 150 V  
NI 6521  
• 8, ±30 VDC digital inputs with 60 V  
channel-to-channel isolation  
Recommended Software  
• LabVIEW  
• LabWindows/CVI  
• Measurement Studio  
• 8 nonlatching mechanical relay outputs  
• 150 V AC/DC maximum switching voltage  
with maximum switching current of 2 A  
and maximum switching power of 60 W  
Other Compatible Software  
• C, C++  
• Microsoft Visual Studio .NET 2003  
• UL listed: UL 61010-1 (IEC 61010-1)  
• High-reliability industrial feature set  
includes isolation, programmable  
power-up states, digital filtering,  
watchdog timers, and change detection  
• NI measurement services software for  
highest productivity and performance  
Measurement Services  
Software (included)  
• NI-DAQmx driver, Version 7.5 or later  
Safety  
Operating Systems  
• Windows 2000/NT/XP  
• LabVIEW Real-Time  
INPUT  
OUTPUT  
Low  
Threshold  
±± VDC  
High  
Threshold  
±11 VDC  
Mechanical  
Relay Outputs  
8
Industrial  
Feature Set  
Product  
Bus  
Inputs  
Isolation  
Max Voltage  
150 V AC/DC  
Max Current  
Max Power  
60 W  
NI 6521  
PCI, PXI  
8
60 V channel-to-channel  
2 A  
Overview and Applications  
many helpful features such as DAQ Assistant, automatic code  
generation, and high-performance multithreaded streaming technology.  
The National Instruments 6521 products are industrial digital I/O devices  
with eight channel-to-channel isolated digital inputs and eight nonlatching  
mechanical relay outputs. You can use the eight differential, isolated,  
±30 VDC digital inputs to read the status of sensors, actuators, and logic  
devices. You can use the bipolar digital input channels to read from both  
sinking and sourcing devices. NI 6521 devices register a logic low if the  
voltage is between ±± V, and register a logic high if the voltage is less  
than -11 V or greater than +11 V.  
Safety  
• UL listed: UL 61010-1 (IEC 61010-1)  
• Keyed connector  
• Insulation covers  
• Complete software configuration  
• High-voltage accessories  
NI 6521 devices are UL listed and require the use of a keyed connector  
to prevent high-voltage signals from accidentally being connected to a  
low-voltage device. For added safety, PCI-6521 includes insulation covers  
on both sides of the board to prevent the user from coming in contact  
with high-voltage traces. Complete software configuration means that  
the user at no point is required to come in the vicinity of high-voltage  
traces. Several low-cost, high-voltage accessory options are available  
to ensure safe operation.  
NI 6521 devices offer three single-pole double-throw (SPDT) Form C  
relays and five single-pole single-throw (SPST) Form A relays. You can  
use NI 6521 relay outputs to switch devices requiring up to 150 V AC/DC.  
NI 6521 relay outputs have maximum current rating of 2A and maximum  
switching power of 60 W.  
Note: The switching current is limited by the maximum switching  
power and maximum voltage. (current = power/voltage)  
NI 6521 devices offer completely programmable configuration and do not  
require setting up jumpers or DIP switches. These devices are ideal for use  
with a programmable automation controller (PAC) for automotive test,  
industrial monitoring, and control applications. With high-current drive, high-  
voltage outputs, and isolation, you can connect the digital I/O module directly  
to a wide array of industrial electronic devices, sensors, and actuators.  
NI 6521 devices take advantage of NI-DAQmx measurement services  
software (Version 7.5 or later) to speed up application development with  
Isolation  
Channel-to-channel . . . . . . . . . . . . . . . . . . . . . . .60 VDC continuous1  
Channel-to-bus . . . . . . . . . . . . . . . . . . . . . . . . . .150 VDC continuous2  
Channel-to-earth . . . . . . . . . . . . . . . . . . . . . . . . .150 VDC continuous3  
1 Verified by 620 Vrms dielectric withstand test, 5 s  
2 Verified by 1400 Vrms dielectric withstand test, 5 s  
3 Verified by 850 Vrms dielectric withstand test, 5 s  

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