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National Instruments NI 9485 manual

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Table of contents for the manual

  • Page 1

    OPERATING INSTRUCTIONS NI 9485 8-Channel Solid-State Relay (SSR) Digital Output Module[...]

  • Page 2

    NI 9485 Operating Instructions 2 ni.com These operating instructions desc ribe ho w to use the National Instruments 9485. For information about installing, conf iguring, and programming the syst em, refer to the system documentation. Vi s i t ni.com/info and enter the info code rds oftwareversion to determine which software you need for the modules[...]

  • Page 3

    © National Instruments Corp. 3 NI 9485 Operating Instructions Safety Guidelines for Hazardous V oltages If hazardous voltages are connected to the module, take the follow ing precautions. A hazardous voltage is a voltage greater than 42.4 V pk or 60 VDC to earth ground. Caution Ensure that hazardous voltage wiring is performed only by qualified pe[...]

  • Page 4

    NI 9485 Operating Instructions 4 ni.com Figure 1 sho ws the NI 9939 connector backshell. Figure 1. NI 9939 Connector Backshell Safety Guidelines fo r Hazardous Loca tions The NI 9485 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Clas s I, Zone 2, AEx nA II T4 and Ex nA II T4 hazardous locations ; and nonhaza[...]

  • Page 5

    © National Instruments Corp. 5 NI 9485 Operating Instructions Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous. Caution Do not remove modules unle ss power has been switched off or the area is known to be nonhazardous. Caution Substitution of component s may impair su[...]

  • Page 6

    NI 9485 Operating Instructions 6 ni.com Special Conditions for Hazard ous Locations Use in Europe This equipment has been evalua ted as EEx nA II T4 equipment under DEMK O Certificate No. 03 A TEX 0324020X. The equipment is marked II 3G and is suitable fo r use in Zone 2 hazardous locations. Wiring the NI 9485 The NI 9485 has a 16-terminal, deta ch[...]

  • Page 7

    © National Instruments Corp. 7 NI 9485 Operating Instructions Table 1. T erminal Assignments Module Te r m i n a l Signal 0 CH0a 1 CH0b 2 CH1a 3 CH1b 4 CH2a 5 CH2b 6 CH3a 7 CH3b 8 CH4a 9 CH4b 10 CH5a 11 CH5b 12 CH6a 13 CH6b 14 CH7a 15 CH7b 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15[...]

  • Page 8

    NI 9485 Operating Instructions 8 ni.com Wiring for High-Vib ration Applications If an application is subject to hi gh vib ration, National Instruments recommends that you either use fe rrules to terminate wires to the detachable screw-term inal connector or use the NI 9939 backshell kit to protect the connections. Refe r to Figure 2 for an illustra[...]

  • Page 9

    © National Instruments Corp. 9 NI 9485 Operating Instructions Connecting Loads to the NI 9485 Y ou can connect loads to the NI 9485. Connect the load to one of the leads of the power source. C onnect either the CHa or the CHb terminal to the load and the other terminal to the other lead of the A C or DC power source. Figure 3 sho ws a possible con[...]

  • Page 10

    NI 9485 Operating Instructions 10 ni.com When you write an ON command to a channel, the SSR is closed and the terminal that is connected to the load allo ws current to flow or allows v o ltage to be applied to the load. When you write an OFF command to a channel, the switch opens, disconnect ing the circuit so no current flo ws and no voltage is ap[...]

  • Page 11

    © National Instruments Corp. 11 NI 9485 Operating Instructions Figures 4 and 5 show examples of using an external flyback dio de to protect DC inducti ve loads and an MO V to protect A C inductive loads, respec tiv ely . Figure 4. Contact Protection for DC Inductive Loads CHa CHb Inductive Load NI 9485 Flyback Diode f or DC Inductive Loads V DC + [...]

  • Page 12

    NI 9485 Operating Instructions 12 ni.com Figure 5. Contact Protection for AC Inductive Loads Sleep Mode This module supports a lo w-powe r sleep mode. Su pport for sleep mode at the system le vel depends on the chassis that the module is plugged into. Refer to the chassi s documentation for information about support for sleep mode. Y ou can enable [...]

  • Page 13

    © National Instruments Corp. 13 NI 9485 Operating Instructions T ypically , when a system is in sleep mode, you cannot communicate with the modules. In sleep mode, the SSRs open to pre vent current from flowing through the load. Consequently , the system consumes minimal power and may dissipate less heat than it does in normal mode. Refer t o the [...]

  • Page 14

    NI 9485 Operating Instructions 14 ni.com Switching current, per channel 1 All channels .... ........... ............ ..... 0.75 A max Up to four channels .......... .......... 1.2 A max Switching rate (90 % duty cycle) 1 ..... 1 operation per second Relay open time ........... ........... .......... 0.5 ms typ Relay close time .... ........... ....[...]

  • Page 15

    © National Instruments Corp. 15 NI 9485 Operating Instructions Power Requirements Power consumption from chassis Active mode ........ ........... ........... . 500 mW max Sleep mode . ........... ........... ......... . 5 mW max Thermal dissipation (at 70 °C) Active mode ... ........... ............ ..... 1 .5 W max Sleep mode . ........... .....[...]

  • Page 16

    NI 9485 Operating Instructions 16 ni.com Safety Safety Voltages Connect only v oltages that are within these li mits. Channel a-to-Channel b ...... ............. . 60 VDC max, 30 V rms max Isolation Channel-to-channel Continuous ............... ............ 60 VDC W ithstand ............ .............. ... 1,390 V rm s , ve r ifi ed by a 5 s dielec[...]

  • Page 17

    © National Instruments Corp. 17 NI 9485 Operating Instructions Safety Standards The NI 9485 is designed to meet th e requirements of the following standards of safety for electric al equipment for measurement, control, and laboratory use: • IEC 61010-1, EN-61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certif ications, refer to[...]

  • Page 18

    NI 9485 Operating Instructions 18 ni.com Environmental National Instruments C Series modules are in tended for indoor use only but may be used outdoors if inst alled in a suitable enclosure. Refer to the installation instructions for the chassis you are using for more information about me eting these specifications. Operating temperature (IEC 60068[...]

  • Page 19

    © National Instruments Corp. 19 NI 9485 Operating Instructions Shock and Vibration T o meet these specif ications, you must panel mount the system and either use ferrules to termi nate wires to the detachable scre w-terminal connector or use the NI 9939 backshell kit to protect the connections. Operating vibration Random (IEC 60068-2-34)......... [...]

  • Page 20

    NI 9485 Operating Instructions 20 ni.com Note For EMC compliance, operate this de vice according to product documentation. CE Compliance This product meets the essentia l requirements of applicable European Directi ves, as amended for CE marking, as follo ws: • 73/23/EEC; Low- V oltag e Directive (safety) • 89/336/EEC; Electrom agnetic Compatib[...]

  • Page 21

    © National Instruments Corp. 21 NI 9485 Operating Instructions National Instruments Contact Information The National Instruments W eb site is your complete resource for technical support. At ni.com/support you ha ve access to ev erything from troubleshooting and application de velopment self-help resources to emai l and phone assistance from NI Ap[...]

  • Page 22

    NI 9485 Operating Instructions 22 ni.com K orea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710, Mexico 0 1 800 010 0793, Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322, Norway 47 (0) 66 90 76 60, Poland 48 22 3390150, Portugal 351 210 311 210, Russia 7 495 783 6851, Singapore 1800 226 5886, Slo venia 386 3 425 42 00, So[...]

  • Page 23

    © 2006–2007 Nati onal Instruments Corp. All rights reserved . 374820C-01 Mar07 National Instruments, NI, n i.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about Natio nal Instruments trademarks. Other product and company names ment ioned herein are trad[...]