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USB-4761 8-channel Relay / Isolated DI USB Data Acquisition Module User Manual.
Contents Chapter 1 Introduction ............ ............................... .......... 2 1.1 Features ....... ........... .................... ........... ................. ........... 2 1. 1.1 Ro bust Pr otect ion ..... ... ...... ..... .... ..... .
Ta ble 3 .1:I /O Co nnec tor Sign al Description .. ............. 24 3.2.3 LED Indicat or Status Descript ion ...... ....... .. ...... ... ...... .. 24 Table 3.2:LED Indicator Sta tus Descripti on ... ....... .... .. 24 3.3 Isolated Digital Input Connections.
1 2 Introduction This chapter will provide information on the features of the DAS module, a quick start guide for installation, and some brief information on software and accessories for the USB-4761 Module.
Chapter 1 Introduction Thank you for buying the USB-4761 data acquisition modul e. The USB- 4761 is a powerful data acquisition (DAS) module for the USB port. It features a unique circuit design and complete functions for data acquisition and control.
1.1.1 Robust Pro tection The USB-4761 digital input channels feature a robust isolation protection for industrial, lab and machinery automat io n app licat i ons. It durabl y withstands voltage up to 2,500 VDC, preventing your host system from any incidental harms.
1.2 Applications • Industrial On/Of f control • Switch status sensi ng • Digital I/ O cont r ol • Industrial and lab automation • SMT/PCB machinery • Semi-conductor machinery • PC-based Industrial Machinery • T esting & Measurement • Laboratory & Education • External relay driving 1.
Figure 1.1: Installati on Flow Char t 5 Chapter 1.
1.4 Sof tw are Overview OMEGA offers a rich set of DLL drivers, th ird-party driver support and application software to help fully exploit the functions of your USB-4761 modu le: • Device Drivers (on the companion CD-ROM) 1.4.1 Programming Choice s for DA&C Module: Yo u may use the application software like the Device Driv ers.
1.5 Device Driver Programming This section will provide a roadmap to demons trate how to build an appli- cation from scratch using the Device Drivers with your favorite development tools such as V isual C++, V isual Basic.
1.5.2 Programming wit h Device Drivers Function Library The Device Drivers offer a rich function library that can be utili zed in various application programs. This function li brary consists of numerous APIs that support many development tools, such as V isual C++, V isual Basic.
2 2 Inst allation This chapter has a package item check- list, proper instructions about unpack- ing and step-by-step procedures for both driver and USB installation.
Chapter 2 Inst allation 2.1 Unp ackin g After receiving your USB-4761 package, please inspect its contents first. The package should contain the followi n g i tems: • USB-4761 Module • Shield ed USB 2.
2.2 Driver Inst allation W e recommend you install the software driver before you install the USB-4761 module into your system, sinc e this wi l l guarantee a smooth installation process. The 32-bit DLL driver Setup program for the USB-4761 module is included on the companion CD-ROM that is shipped with your module package.
St e p 3 : Click Continue , and sel ect t he Installa tion option St e p 4 : Select the specific device and th en just fo ll ow th e insta llatio n instructions step by step to complete your device driver installation and setup.
Figure 2.2: Device Name on the Device Manager Note: If your modu le is prop er ly in sta lle d, you shou ld see the device name of your module listed on the Device Manage r tab . If yo u see your d evice na me listed, but mark ed w it h an excl ama tio n sign “!” , it mean s your mo du le ha s not be en co rr ectly inst alle d.
After your module is prop erly installed with your system, you can now configure your device using the Device Manager tha t has itself already been installed on your system during driver setup. A complete device installation pr ocedure should include device setup , configuration and testing .
St e p 2 : Yo u can view the device(s) alread y installed on y our system (if any) in the Installed Devices list box. If you haven’t installed any devices, you might see a blank list.
Figure 2.5: The Device Setting Dialog Box Note: Pleas e refe r to the so f tware man u al S tart/Pro grams/Omega USB-4700 series/Device Driver’s Manual for the firmw are download util ity guidance an d further info rmation .
2.5.1 T esting Digit al Input Functio n Click the Digit al Input tab to show the Digita l Input test panel as seen below . By the color of the LEDs, you can easily discern whether the sta - tus of each digital input channel is high or low . Figure 2.6: Digit al Inpu t T ab in Device T est Dial og 2.
. Figure 2.7: Digit al Out put T ab in Device T est Dialog Only after your module device is properly set up, configured and tested, can the device installation procedure be considered complete. After the device installation procedure is completed, you can safely proceed to the next chapter , Sign al Connections .
St e p 2 : Right click the “Unplug or Eject Hardware” icon on your task bar . Figure 2.8: Unplug or Eject Hardware Dialog St e p 3 : Select “USB471 1 Device” and press “S top” Button.
St e p 4 : Unplug your USB device from the USB port. Note: Plea se mak e sur e that you have clo se d the app lic ati on prog rams bef ore unplu gging the USB de vice, othe rwise some unexpe cted system er rors or da mages may hap- pen.
3 2 Signal Connections This chapter provides useful informa- tion on how to connect input and output signals to the USB-4761 via the I/O connectors.. Sections include: • Overview • I/O Connectors .
Chapter 3 Signal Connections 3.1 Overview Maintaining good signal connections is one of the most important factors in ensuring that your application system is sending and receiving data correctly . A good signal connection can avoid unnecessary and costly damage to your PC and other hardware devices.
Figure 3.1: I/O Connector Pin Assignment 23 Chapter 3.
3.2.2 I/O Conne ctor Signal Description T able 3.1: I/O Connector Signal Description Signal Name Description NO<0~7> Normal ly Open p in of re lay output COM<0~ 7> Common pin of rel ay out.
3.3 Iso late d Dig it al Input Connections 3.3.1 Single-ende d Channel Connections USB-4761 has 8 isolated digital input channels. Each of isolated digital input channel accepts 10~30 V DC voltage inputs, and accept bi-direc- tional input. It means that you can apply positive or negative voltage to an isolated input pin (V in ).
3.5 Field Wiring Co nsiderations • When you use USB-4761 to acquire data from outside, noises in the environment might significantly af fect the accuracy of your measure- ments if due cautions are not taken. The following measures will be helpful to reduce possible interference running signal wires between signal sources and the USB-4761.
A 2 S pecifications.
Appendix A S pecifications A.1 Isolat ed Digit al Input Channels 8 Optical Isolation 2,500 VDC Opto-isolator response time 25us Input V oltage VIH (max.) 30VDC VIH (m in. ) 5VDC VIL (max,) 2VDC Input current 5VDC 1.2mA 12VDC 3.3mA 24VDC 6.9mA 30VDC 8.
A.3 Ge ne ra l I/O Connector T ype Remova ble 10- pi n scr ew t er m ina l x 5 Dimensions 132 X 80 X 32 mm (5.2” X 3.2” X 1.3”) Power Consumption 60mA@+5V typical, 400mA@+5V max.
USB-4761 User Manual 30.
B 2 Function Block.
Appendix B Function Bloc k USB-4761 User Manual 32.
WARRANTY / DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time.
Where Do I Find Ever ything I Need for Process Measurement and Contr ol? OM EGA…Of Course! Shop online at omega.com TEMPERA TURE 䡺 ⻬ Thermocouple, RTD & Thermistor Probes, Connectors, Panels.
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