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National Instruments NI USB-6525 manual

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Table of contents for the manual

  • Page 1

    USER GUIDE AND SPECIFICATIONS NI USB-6525 This user guide describes how to use the National Instruments USB-6525 data acquisi tion (D A Q) de vice. Introduction The NI USB-6525 is a full-speed USB 2.0 device that provides eight ±60 VDC chan nel-to-channel isolated digital inputs (DI ), eight 60 VDC/30 Vrms channel-to-channel isolated solid-state r[...]

  • Page 2

    USB-6525 User Guide an d Specifications 2 ni.com Figure 2. USB-6525 Back View Installing Software Software suppo rt for the USB-6525 for Wind ows 2000/XP is provided by NI-DAQmx. The NI-D A Q mx CD contains example programs th at you can use to get started programming with the USB-65 25. Refer to the NI-D AQmx for USB Devices Getting Started Guide [...]

  • Page 3

    © National Instruments Co rporation 3 USB-6525 User Guide and Specifications Refer to the Safety G uidelines section of this document for im portant safety information. Setting Up Hardware Complete the f ollowing st eps to set up the hardwa re: 1. Install combicon scr e w terminal blocks by inserting them into th e combicon jacks. Note The USB-652[...]

  • Page 4

    USB-6525 User Guide an d Specifications 4 ni.com I/O Connector The USB-6525 device ships with two d etachable terminal blocks for digital signals. Each indivi dual terminal accepts a wire gauge between 16 AWG–28 AWG. Table 1. Digital T erminal Assignments Module T erminal Signal Module T erminal Signal 1 P0.0A 17 P1.0+ 2 P0.0B 18 P1.0– 3 P0.1A [...]

  • Page 5

    © National Instruments Co rporation 5 USB-6525 User Guide and Specifications Signal Descriptions Table 2 describes the signals available on the I/O connectors. Digital I/O USB-6525 has eight channel-to-channel op tically isolated inputs, P1.<0..7>, and eight chann el-to-channel optically isolated solid-state relay outputs, P0.<0..7>. P[...]

  • Page 6

    USB-6525 User Guide an d Specifications 6 ni.com Applying a DC voltage of at least 3.2 V across two input terminals registers logic high. Applying no voltage or a voltage dif ference of 1 V or less registers logic lo w . DC voltages between 1 V and 3.2 V may not register a consistent or usable value. Signal Connection Example Figure 5 shows signal [...]

  • Page 7

    © National Instruments Co rporation 7 USB-6525 User Guide and Specifications Solid-State Relay (SSR) Outputs You can connect loads to the USB-6525. Connect the load to one of the leads of the power source. Connect either the P0. x A or the P0. x B terminal to the load and the other terminal to the other lead of the AC or DC power source. Figure 6 [...]

  • Page 8

    USB-6525 User Guide an d Specifications 8 ni.com Figures 7 and 8 show examples of us ing an external flyback diode to protect DC inductiv e loads and an MO V to protect A C inducti ve loads, respecti vely . Figure 7. Contact Protection for DC Inductive Load s Figure 8. Co ntact Protection for AC Inductive Loads Inductive Load USB-6525 Flyback Diode[...]

  • Page 9

    © National Instruments Co rporation 9 USB-6525 User Guide and Specifications Using the USB-6525 as a TTL Output Device Figure 9 shows a sign al connection example for a TTL-level application with an external supply voltage of +5 V. Figure 9. TTL Device Signal C onnection Example When the SSR is open, a small am ount of current flo ws through R L a[...]

  • Page 10

    USB-6525 User Guide an d Specifications 10 ni.com Input current ........... .............. .............. ....3.0 mA/channel max Solid-State Relay Outputs Number of output channels ................. ....8, ch-ch isolated Relay type ..................... .............. ............Normally open solid-state relay (SSR) Switching voltage .............[...]

  • Page 11

    © National Instruments Corporation 11 USB- 6525 User Guide an d Specifications Power Requirements USB Input voltage ............ ........... ............ 4.5 to 5.25 VDC in configured state Active current ....... .............. ........... . 150 mA max Suspend current...................... ......... 350 μ A ty p Physical Characteristics Dimension[...]

  • Page 12

    USB-6525 User Guide an d Specifications 12 ni.com Isolation Channel-to-channel ............. .............. ......60 VDC continuous Channel-to-earth ground ....... ...... ............60 VDC continuous Withstand . .......... .............. ........... ............60 VDC continuous Caution Do not use this module for connection to signals or for measu[...]

  • Page 13

    © National Instruments Corporation 13 USB- 6525 User Guide an d Specifications CE Compliance This product meets the essential re quirements of applicable European Directives, as amended for CE markin g, as follows: • 73/23/EEC; Lo w-V oltage Directi ve (safety) • 89/336/EEC; Electromag netic Compatibility Directive (EMC) Note Refer to the Decl[...]

  • Page 14

    USB-6525 User Guide an d Specifications 14 ni.com Operate the device only at or belo w Pollution Degree 2. Pollution is foreign matter in a solid, liquid, or gaseous state that can reduce dielectric strength or surface resisti vity . The following is a description of pollution de grees: • Pollution Degree 1 means no pollution or only dry , noncon[...]

  • Page 15

    © National Instruments Corporation 15 USB- 6525 User Guide an d Specifications • Measurement Category III is for measurements performed in the building installation at the distribution le vel. This cate gory refers to measurements on hard-wir ed equipment such as equipment in f ixed installations, distribution boards, and circuit breakers. Other[...]

  • Page 16

    National Instruments, NI, ni.com, and LabVIEW are tradem arks of National Instruments Corporation. Refer to t he Terms of Use section on ni.com/legal for more information abou t National Instruments trademarks. Other product and compan y names mentioned herein are trademarks or t rade names of their respective companie s . For patents covering Nati[...]