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Measurement Computing USB-SSR08 User Manual

Usb-based 8 solid-state relay module interface device
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Summary of Contents for Measurement Computing USB-SSR08

  • Page 2 USB-SSR08 USB-based 8 Solid-state Relay Module Interface Device User's Guide Document Revision 4, June, 2006 © Copyright 2006, Measurement Computing Corporation...
  • Page 3 Measurement Computing. Thank you for choosing a Measurement Computing product—and congratulations! You own the finest, and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our two missions: To offer the highest-quality, computer-based data acquisition, control, and GPIB hardware and software available—at...
  • Page 4 Information furnished by Measurement Computing Corporation is believed to be accurate and reliable. However, no responsibility is assumed by Measurement Computing Corporation neither for its use; nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation.

  • Page 5: Table Of Contents

    Overview: USB-SSR08 features........................1-1 Compatible SSR modules .............................. 1-2 USB-SSR08 block diagram ..........................1-2 Software features ............................1-2 Connecting a USB-SSR08 to your computer is easy..................1-3 Chapter 2 Installing the USB-SSR08......................... 2-1 What comes with your USB-SSR08 shipment?....................2-1 Hardware ..................................
  • Page 6 USB-SSR08 User's Guide Main connector ............................... 4-3 Screw terminal pin out ..............................4-3...

  • Page 7: Preface

    What you will learn from this user's guide This user's guide explains how to install, configure, and use the USB-SSR08 so that you get the most out of its solid state relay features. This user's guide also refers you to related documents available on our web site, and to technical support resources.

  • Page 8: Introducing The Usb-Ssr08

    (-) relay contacts are brought out to the screw terminals. The USB-SSR08 is powered by an external 9 V, 1 A regulated power supply that is shipped with the device. A USB cable is also included. USB out and power out connections let you power and control multiple MCC USB Series boards from one external power source and one USB port in a daisy chain fashion.

  • Page 9: Compatible Ssr Modules

    Compatible SSR modules The USB-SSR08 board has locations for eight solid state relay modules that you can install in your USB-SSR08 board. The SSR modules use a standard color scheme so you can quickly identify what module type is installed.

  • Page 10: Connecting A Usb-Ssr08 To Your Computer Is Easy

    USB-SSR08. No third-party device driver is required. You can connect the USB-SSR08 before or after you install the software, and without powering down your computer first.

  • Page 11: Installing The Usb-Ssr08

    In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of the software you received with your USB-SSR08 and information regarding installation of that software. Please read this booklet completely before installing any software or hardware.

  • Page 12: Unpacking The Usb-Ssr08

    USB 1.1 port or USB 2.0 port on your computer. Configuring the hardware switches The USB-SSR08 has three on-board switches that you set to configure the I/O module type, relay logic polarity, and relay power-up state. Configure these switches before you connect the external power supply to the USB- SSR08.
  • Page 13 Installing the USB-SSR08 Remove from the enclosure to access the on-board switches To change the configuration of a switch, you must first remove the USB-SSR08 from the enclosure. Turn external power off before changing the switch settings I/O module type Configure switch to set the type of each module group for input or output.

  • Page 14: Connecting The External Power Supply

    If the USB LED turns off If the USB LED is lit but then turns off, the computer has lost communication with the USB-SSR08. To restore communication, disconnect the USB cable, and then reconnect it. This should restore communication, and the USB LED should turn back on.
  • Page 15 Plug the external power cord back into the connector. POWER IN Plug the USB cable back into the USB-SSR08. Your system should now properly detect the USB-SSR08 hardware. Contact technical support if your system still does not detect the USB-SSR08.

  • Page 16: Functional Details

    Chapter 3 Functional Details Internal components The USB-SSR08 has the following internal components, as shown in Figure 3-1. Two (2) USB connectors Two (2) external power connectors PWR LED USB LED I/O module type switch ( Control logic polarity switch (...

  • Page 17: External Power Connectors

    "Power limitations using multiple USB-SSR08 devices" on page 3-4 for more information. USB LED LED indicates the communication status of the USB-SSR08. This LED uses up to 5 mA of current and cannot be disabled. Table 3-2 explains the function of the USB LED.

  • Page 18: Control Logic Polarity Switch (S2)

    Figure 3-4. Switch S3 default configuration Screw terminals The USB-SSR08 has eight screw terminal pairs to connect external devices to the SSR modules. Two terminals are dedicated to each module (one positive and one negative terminal). Each screw terminal is identified with a label on the board and on the underside of the enclosure lid.

  • Page 19: Led States

    USB-SSR08 connected to a computer and to an external power source. The USB-SSR08 already connected to the computer is referred to as the connected module. The USB-SSR08 you want to daisy chain to the connected module is referred to as the new module.

  • Page 20: Specifications

    Chapter 4 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. I/O module configuration Table 1. I/O module configuration specifications Modules 1-4 User-selectable via switch S1 "CL" position as either input modules or output (default) modules.

  • Page 21: Usb Specifications

    USB-SSR08 User's Guide Specifications The USB-SSR08 monitors the external +9 V power supply voltage with a voltage supervisory Note 1: circuit. If this power supply exceeds its specified limit, the PWR LED will turn off indicating a power fault condition.

  • Page 22: Environmental

    USB-SSR08 User's Guide Specifications Environmental Table 8. Environmental specifications Operating temperature range 0 to 70 °C Storage temperature range -40 to 85 °C Humidity 0 to 90% non-condensing Main connector Table 9. Connector specifications Connector type Screw terminal Wire gauge range...
  • Page 23 Address: 10 Commerce Way Suite 1008 Norton, MA 02766 Measurement Computing Corporation declares under sole responsibility that the product USB-SSR08 to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents: EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN 61326 (1997) Amendment 1 (1998) Emissions: Group 1, Class A EN 55011 (1990)/CISPR 11: Radiated and Conducted emissions.
  • Page 24 Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton, Massachusetts 02766 (508) 946-5100 Fax: (508) 946-9500 E-mail: info@mccdaq.com www.mccdaq.com...

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