Industrologic URB
Universal Relay Board
Reference Manual
version 2/5/05
Industrologic, Inc.
3201 Highgate Lane
St. Charles, MO
63301
USA
Phone: (636) 723-4000
WWW: http://www.industrologic.com
Email: info@industrologic.com
Trademark and Copyright Information
URB is a Trademark of Industrologic, Inc. 2005
This document is Copyright (c) 2005 by Industrologic, Inc.
All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying or scanning, for any purpose other than the personal use by the purchaser of this product. Industrologic, Inc. reserves the right to revise this document at any time without obligation to notify any person of such revision. Industrologic, Inc. assumes no responsibility for any errors that may appear in this document.
Warning/Disclaimer
Whereas effort has been made to make the information in this document as useful and accurate as possible, Industrologic, Inc. assumes no responsibility for the application, usefulness, or completeness, of the information contained herein. Under no circumstance will Industrologic, Inc. be responsible or liable for any damages or losses including indirect or consequential damages or losses arising from either the use of any information contained within this manual or the use of any products or services referenced within this manual.
Industrologic, Inc. reserves the right to change any product's features, specifications, documentation, warranties, fee schedules, and conditions at any time and without notice.
Industrologic products are provided as printed circuit board level assemblies. Some Industrologic products may include mechanical packaging accessories which are provide for the purchaser's convenience, and are not intended to be final assembly enclosures.
Industrologic products are provided with the understanding that the purchaser will determine fitness for any particular application as well as achieve compliance with any particular specifications or regulations as required or desired for that application.
Warranty
Industrologic, Inc. products are warranted to be free from defects in workmanship or material under normal use and service for a period of one year from date of purchase. Industrologic's warranty is to the original purchaser only, but is extended to you by the Distributor or OEM from whom you purchased the product.
Industrologic's obligation under this Warranty is limited to replacement with a new or repaired unit to the original purchaser. The unit must be returned, and replacements obtained from Industrologic, Inc. or the Distributor or OEM from whom it was purchased.
This warranty will not apply if, in the judgment of Industrologic, Inc., damage or failure of the product has resulted from accident, alteration, misuse, abuse, connection to or operation with incompatible signals or power sources, or improper installation.
Under no circumstances shall Industrologic, Inc. be liable to purchaser or any third party for any loss of profits or other direct or indirect costs, expenses, losses, or consequential damages arising out of or as a result of any defects in or failure of Industrologic products or any part or parts thereof.
THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EITHER EXPRESSED OR IMPLIED, AS TO DESCRIPTION, QUALITY, MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE OR USE, OR ANY OTHER MATTER.
Return and Repair Policy
Products purchased in single piece quantities may be returned, if in resellable
condition, for a full refund of the purchase price only, to the original
purchaser, within 30 days of purchase.
Products must be returned by original purchaser with a Return Materials Authorization (RMA) number issued by Industrologic, Inc. or the Distributor or OEM from whom it was purchased, authorizing its return. Current repair or replacement fees and procedures will be related during the issue of the RMA number.
Warranty or repair units must be returned with postage and insurance paid by purchaser. Industrologic, Inc. is not responsible for damages or loss during shipment.
Industrologic URB
Universal Relay Board
The Industrologic URB is a relay printed circuit board assembly designed to
allow logic and microcontroller circuits to control medium current loads.
It features a single-pole double-throw "Form C" relay with 24 volt 1 amp
contacts, and includes convenient terminal block connections, transistor
drivers, a back EMF suppression diode, and LED indicator.
Summary of Features
- +5 power supply voltage compatible with most microcontroller boards
- Single-pole double-throw "Form C" relay with 1 amp contacts
- Screw terminal block connections for easy wiring
- On-board suppression diode and LED indicator
- Separate connections for both active-high and active-low drive signals
- Low source and sink current for both active-high and active-low drive signals
- Drive signals can both be used to create "wired OR" activation
- Originates as a 4 circuit assembly that can be separated into individual relay boards
Mechanical specifications
Single-sided .062" FR-4 glass epoxy printed circuit board
Single relay circuit only 2.0 inches by 1.0 inches
Two #6 clearance mounting holes on each individual board
Electrical specifications
Operating Environment:
Temperature: 0-50 degrees Celsius (32-122 Fahrenheit)
Humidity: 30 to 80 percent, non-condensing
Power Supply Requirements:
Operating voltage: 5 volts DC regulated or unregulated
Operating current: 30 mA per relay maximum at 5 volts (plus 15 mA maximum for LED)
Relay Contacts:
Maximum voltage: 24 volts, AC or DC
Maximum current: 1.0 amp
Manufacturer's type: Omron G5V-1-DC5 or equivalent
Input Signals:
Active-low (L) sink current: 0.5 mA minimum, limited to 1.0 mA by resistor
Active-high (H) source current: 0.1 mA minimum, limited to 1.0 mA by resistor
Using the URB
The URB is designed to be used with microcontroller boards or other logic
circuits that have 5 volts and ground available to power the URB, and
low current logic level outputs to activate the relays. The URB is
"universal" in that it can accept either active-high or active-low
outputs. Separate connections are provided for either or both. If both
are used they can provide a "wired OR" connection.
The URB originates as a 4 board assembly that can be separated into
individual boards by snapping the boards apart along a pre-cut score
line. Each individual relay board then contains identical components
and functions. If the URB is used as a multiple board assembly the
+5 volt and ground terminals on the individual boards can be connected
in parallel to the microcontroller power supply.
Schematic Diagram
Using the URB with Industrologic products
Industrologic products that include an on-board micrcontroller have
logic level signals that are connected directly to the pins of the
microcontroller, and these signals usually have 10K ohm "pullup"
resistors to +5 volts. This allows the signal to be easily used
as an input or output. These products also have +5 and ground
connections to provide power to external devices.
When the microcontroller is reset or powered up these signals are
at a logic level "high" state and can be either read as inputs,
or programmed "low" as outputs.
To use the URB with Industrologic products with this type of logic
level I/O signals, the signals are connected to the L (active-low)
connection, and the +5 and ground connections on the URB go to the
product's +5 and ground connections.
The following diagram shows how to connect a 4 board URB to an
Industrologic T51 single board computer.
end of manual
