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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 1.1.2 1.1.3 1.1.4 Robust Protection ........................................................... 3 Wide Input Range .......................................................... 3 Reset Protection for Industrial Applications .................. 3 Plug & Play Function .....................................................
3.2.3 3.3 Table 3.1:I/O Connector Signal Description ............... 24 LED Indicator Status Description ................................ 24 Table 3.2:LED Indicator Status Description ................ 24 Isolated Digital Input Connections.................................. 25 3.3.1 Single-ended Channel Connections ............................. 25 Figure 3.2:Isolated Digital Input Connections ............. 25 3.4 Relay Connections........................................................... 25 3.
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 module. The USB4761 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.
1.1.1 Robust Protection The USB-4761 digital input channels feature a robust isolation protection for industrial, lab and machinery automation applications. It durably withstands voltage up to 2,500 VDC, preventing your host system from any incidental harms. If connected to an external input source with surge protection, the USB-4761 can offer up to a maximum of 2,000 VDC ESD (Electrostatic Discharge) protection. 1.1.
1.2 Applications • Industrial On/Off control • Switch status sensing • Digital I/O control • Industrial and lab automation • SMT/PCB machinery • Semi-conductor machinery • PC-based Industrial Machinery • Testing & Measurement • Laboratory & Education • External relay driving 1.3 Installation Guide Before you install your USB-4761 module, please make sure you have the following necessary components: • USB-4761 DAS Module • Shielded USB 2.0 cable (1.
Figure 1.
1.4 Software Overview OMEGA offers a rich set of DLL drivers, third-party driver support and application software to help fully exploit the functions of your USB-4761 module: • Device Drivers (on the companion CD-ROM) 1.4.1 Programming Choices for DA&C Module: You may use the application software like the Device Drivers. On the other hand, advanced users are allowed to use register- level programming as another option, although this is not recommended due to its laborious and time-consuming nature. 1.4.
1.5 Device Driver Programming This section will provide a roadmap to demonstrate how to build an application from scratch using the Device Drivers with your favorite development tools such as Visual C++, Visual Basic. The step-by-step instructions on how to build your own applications using each development tool will be given in the Device Drivers Manual. Moreover, a rich set of example source code is also given for your reference. 1.5.
1.5.2 Programming with Device Drivers Function Library The Device Drivers offer a rich function library that can be utilized in various application programs. This function library consists of numerous APIs that support many development tools, such as Visual C++, Visual Basic. 1.5.3 Troubleshooting Device Drivers Error Driver functions will return a status code when they are called to perform a certain task for the application.
2 2 Installation This chapter has a package item checklist, proper instructions about unpacking and step-by-step procedures for both driver and USB installation..
Chapter 2 Installation 2.1 Unpacking After receiving your USB-4761 package, please inspect its contents first. The package should contain the following items: • USB-4761 Module • Shielded USB 2.0 Cable (1.8 m) • Companion CD-ROM (DLL driver included) The USB-4761 Module harbors certain electronic components vulnerable to electrostatic discharge (ESD). ESD could easily damage the integrated circuits and certain components if preventive measures are not carefully paid attention to.
2.2 Driver Installation We recommend you install the software driver before you install the USB-4761 module into your system, since this will 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. Please follow the steps below to install the driver software: Step 1: Insert the companion CD-ROM into your CD-ROM drive.
Step3: Click Continue, and select the Installation option Step4: Select the specific device and then just follow the installation instructions step by step to complete your device driver installation and setup. For further information on driver-related issues, an online version of the Device Drivers Manual is available by accessing the following path: Start/Programs/Omega USB-4700 Series/ Device Driver’s Manual 2.
Figure 2.2: Device Name on the Device Manager Note: If your module is properly installed, you should see the device name of your module listed on the Device Manager tab. If you see your device name listed, but marked with an exclamation sign “!” , it means your module has not been correctly installed. In this case, remove the mod- ule from Device Manager by selecting its device name and press the Remove button. Then go through the driver installation process again.
After your module is properly installed with your system, you can now configure your device using the Device Manager that has itself already been installed on your system during driver setup. A complete device installation procedure should include device setup, configuration and testing. The following sections will guide you through the Setup, Configuration and Testing of your device. 2.
Step2: You can view the device(s) already installed on your system (if any) in the Installed Devices list box. If you haven’t installed any devices, you might see a blank list. Figure 2.4: Device Manager Dialog Box Note: If you have properly installed the device driver but still can’t find it in Device Manager, please close the Device Manager and restart it. 2.4.2 Configuring the Device Step 3: Click “Setup” button and you will see the “Device Setting “dialog box as follow.
Figure 2.5: The Device Setting Dialog Box Note: Please refer to the software manual Start/Programs/Omega USB-4700 series/Device Driver’s Manual for the firmware download utility guidance and further information. 2.5 Device Testing Following the Setup and Configuration procedures to the last step described in the previous section, you can now proceed to test the device by clicking the Test Button in the I/O Device Installation dialog window.
2.5.1 Testing Digital Input Function Click the Digital Input tab to show the Digital Input test panel as seen below. By the color of the LEDs, you can easily discern whether the status of each digital input channel is high or low. Figure 2.6: Digital Input Tab in Device Test Dialog 2.5.2 Testing Digital Output Function Click the Digital Output tab to bring up the Digital Output test panel as shown below.
. Figure 2.7: Digital Output Tab in Device Test 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, Signal Connections. 2.
Step2: Right click the “Unplug or Eject Hardware” icon on your task bar. Figure 2.8: Unplug or Eject Hardware Dialog Step3: Select “USB4711 Device” and press “Stop” Button. Figure 2.
Step4: Unplug your USB device from the USB port. Note: Please make sure that you have closed the application programs before unplugging the USB device, otherwise some unexpected system errors or damages may happen.
3 2 Signal Connections This chapter provides useful information on how to connect input and output signals to the USB-4761 via the 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. 3.2 I/O Connectors USB-4761 is equipped with plug-in screw-terminal connectors that facilitate connection to the module without terminal boards or cables. 3.2.1 Pin Assignment Figure 3.
Figure 3.
3.2.2 I/O Connector Signal Description Table 3.1: I/O Connector Signal Description Signal Name Description NO<0~7> Normally Open pin of relay output COM<0~7> Common pin of relay output NC<0~7> Normally Close pin of relay output IDInA Isolated digital input A IDInB Isolated digital input B 3.2.3 LED Indicator Status Description The USB Module is equipped with a LED indicator to show the current status of the device.
3.3 Isolated Digital Input Connections 3.3.1 Single-ended Channel Connections USB-4761 has 8 isolated digital input channels. Each of isolated digital input channel accepts 10~30 VDC voltage inputs, and accept bi-directional input. It means that you can apply positive or negative voltage to an isolated input pin (Vin ). The figure below shows how to connect an external input source to one of the card's isolated input channels. Figure 3.2: Isolated Digital Input Connections 3.
3.5 Field Wiring Considerations • When you use USB-4761 to acquire data from outside, noises in the environment might significantly affect the accuracy of your measurements 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 Specifications
Appendix A Specifications A.1 Isolated Digital Input Channels Optical Isolation 8 2,500 VDC Opto-isolator response time 25us Input Voltage VIH (max.) 30VDC VIH (min.) 5VDC VIL (max,) 2VDC 5VDC 1.2mA 12VDC 3.3mA 24VDC 6.9mA 30VDC 8.7mA Input current A.2 Relay Output Channels Relay Type 8 Form C Rating (Resistive) Max. Switching Power 30 VDC@1 A 110 VAC@0.3 A 120 VAC@0.5 A 240 VAC@0.25 A 62.5 VA, 60 W Max.Switching Voltage Max.
A.3 General I/O Connector Type Dimensions Removable 10-pin screw terminal x 5 132 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 Block 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. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation.
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