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National Instruments NI 9871, Инструкция по эксплуатации и технические характеристики

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NI 9871 Operating Instructions

16

ni.com

Safety

Maximum Voltage

1

Connect only voltages that are within these limits.

RS485/RS422 Port-to-COM.............  –8 to +13 VDC max, 

Measurement Category I

V

SUP

-to-COM ...................................  ±28 V max,

Measurement Category I

Measurement Category I is for measurements performed on 
circuits not directly connected to the electrical distribution system 
referred to as 

MAINS

 voltage. MAINS is a hazardous live electrical 

supply system that powers equipment. This category is for 
measurements of voltages from specially protected secondary 
circuits. Such voltage measurements include signal levels, special 
equipment, limited-energy parts of equipment, circuits powered by 
regulated low-voltage sources, and electronics.

Caution

Do not connect to signals or use for 

measurements within Measurement Categories II, III, 
or IV.

1  

The maximum voltage that can be applied or output without creating a safety hazard.

Содержание NI 9871

Страница 1: ...OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9871 4 Port RS485 RS422 Serial Module...

Страница 2: ...ion about installing configuring and programming the system refer to the system documentation Visit ni com info and enter cseriesdoc for information about C Series documentation Note The safety guidel...

Страница 3: ...notes that the component may be hot Touching this component may result in bodily injury Safety Guidelines for Hazardous Locations The NI 9871 is suitable for use in Class I Division 2 Groups A B C D T...

Страница 4: ...by IEC 60529 and EN 60529 Caution For Zone 2 applications install a protection device between the RS232 signal cables and the NI 9871 RJ 50 jacks ports 1 4 The device must prevent the RS232 signal to...

Страница 5: ...ster LR Type Approved for marine shipboard applications To verify Lloyd s Register certification for a module visit ni com certification and search for the LR certificate or look for the Lloyd s Regis...

Страница 6: ...vide connections for four RS485 RS422 devices Table 1 RS485 RS422 Port Pinout RJ 50 Pin Signal Name 1 No Connect 2 TXD 3 TXD 4 RTS 5 CTS 6 RXD 7 RXD 8 RTS 9 CTS 10 GND These signals are shared by all...

Страница 7: ...he cables included with your kit convert the RJ 50 pinout to the standard NI pinout as shown in Table 2 Table 2 Pin Assignments for RS485 RS422 DB 9 Male Connector Connector Pin Signal 1 GND 2 CTS 3 R...

Страница 8: ...igtail to connect to an external voltage source Figure 1 lists the connections between an external voltage source of 8 V to 28 V and the NI 9871 Caution To ensure the specified EMC performance do not...

Страница 9: ...uctions Figure 1 Four Position External Power Connector Figure 2 shows the method of power connection to the NI 9871 module Attach an isolated power supply to the Vsup and COM terminals using the incl...

Страница 10: ...y adapter available at ni com serial to connect power to more than one module using the same power source One y adapter is needed for each additional module Ensure that the power supply can handle ma...

Страница 11: ...s Caution All connections must be made before power is applied Figure 3 Powering Multiple Modules from a Single Power Supply Red Black NI P N 198303 XX Male Microfit Y Adapter NI P N 198159 XX Female...

Страница 12: ...bus topologies and termination Figure 4 4 Wire Full Duplex Multidrop Network Using Terminating Resistors Figure 5 2 Wire Multidrop Network Using Terminating Resistors RS485 terminators are available a...

Страница 13: ...rent RS485 transceiver control modes NI 9871 Hardware Overview The NI 9871 has four independent RS485 RS422 ports that are isolated from the other modules in the system Each port is fully compatible w...

Страница 14: ...te with the modules Refer to the Specifications section for more information about power consumption and thermal dissipation Specifications The following specifications are typical for the range 40 to...

Страница 15: ...wer consumption from chassis Active mode 0 5 W max Sleep mode 50 W max Thermal dissipation at 70 C Active mode 1 5 W max Sleep mode 55 mW max Required external supply voltage range VSUP 8 to 28 VDC Po...

Страница 16: ...em referred to as MAINS voltage MAINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such...

Страница 17: ...dielectric withstand test up to 5 000 m altitude 500 Vrms verified by a 5 s dielectric withstand test Safety Standards This product meets the requirements of the following standards of safety for elec...

Страница 18: ...C D T4 Class I Zone 2 Ex nA II T4 Europe DEMKO Ex nA IIC T4 Environmental Refer to the installation instructions for the chassis you are using for more information about meeting these specifications O...

Страница 19: ...only Shock and Vibration To meet these specifications you must panel mount the CompactRIO system Operating vibration random IEC 60068 2 64 5 grms 10 to 500 Hz Operating shock IEC 60068 2 27 30 g 11 ms...

Страница 20: ...y use EN 61326 IEC 61326 Class A emissions Basic immunity EN 55011 CISPR 11 Group 1 Class A emissions AS NZS CISPR 11 Group 1 Class A emissions FCC 47 CFR Part 15B Class A emissions ICES 001 Class A e...

Страница 21: ...e information To obtain product certifications and the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column...

Страница 22: ...the end of the product life cycle all products must be sent to a WEEE recycling center For more information about WEEE recycling centers National Instruments WEEE initiatives and compliance with WEEE...

Страница 23: ...e headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone suppor...

Страница 24: ...ct and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products technology refer to the appropriate location Help P...

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