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1-Channel RS232 ProXR Lite Relay

ProXR Lite RS232 Relay
1-Channel 20-Amp SPDT Relay Installed

Product Code: R120PL_ZRS

R120PL_ZRS ProXR Lite Relay Controller
R120PL_ZRS ProXR Lite Controller
The R120PL_ZRS features the same ProXR Command set as our more expensive boards without the expandability of a full ProXR controller.
    

RS232 ProXR Lite at a Glance

  • Accurate Surface Mount Machine-Manufactured
  • Onboard RS232 Interface Module with your choice of RS232 connector
      - Onboard DB9 Connector:
      - Screw Terminal Connector
      - Off the Board DB9 Connector
  • Mounts as a Virtual COM Port on Computer
  • Compatible with 3rd Party Devices Such as Crestron
  • Read 0 to 5 Volt Sensors
  • Base Station Software gets you up an running fast
  • Highly reliable with industry leading command set
  • Program in almost any language
  • Break-A-Way Tabs for smaller profile when needed
RS232 Relay
Pro XR Lite with RS232 Interface

The R120PL_ZRS is equipped with firmware built into the board that will allow you to Control one relay at a time, a bank of relays or all relays at once with manual and automatic refreshing command set. The R120PL_ZRS Relay supports any available COM port at any standard baud rate, allowing easy integration into any program that support serial communications.

R120PL_ZRS The Ideal Choice
The R120PL_ZRS ProXR Lite Relay is an ideal choice for applications that may require a limited number of Relays, and it's extremely easy to work with since it mounts as a COM port on your computer.

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The R120PL_ZRS features the same ProXR Command set as our more expensive boards without the expandability of a full ProXR controller.

Resources:

Here's Where to Order:

R120PL_ZRS
Ratings AC DC
Voltage 240 24
Amperage
ProXR Lite RS232 Relay
1-Channel 20-Amp SPDT Relay Installed
Part #: R120PL_ZRS $125.00
 

Power Supply Available

PWR12 Power Supply
The PWR12 is regulated power supply providing clean power necessary for the performance of these boards
Power Supplies $24/ea
 

Enclosures Available

TFL Enclosures
The TFL Enclosure is an undrilled, non-waterproof enclosure and is available at checkout for this controller.
Spec Sheet: TFL_SPEC
CAD Drawing: TFL_CAD
3D Model: TFL_3D
$19/ea
 

Induction Supression

Induction Capacitors
Add years to the lifespan of the relay by adding an Induction Capacitor to the line when switching inductive loads. 
Induction Suppression $1.99 - $4.89 ea
Available at Checkout

USB Adapter Available

USB to RS232 Adapter
Connect a RS232 board with a DB9 connector to the USB port of your computer

Order Today with This Board for Only $35
Stock#: USB $40/ea
 

Desktop Control

N-Button Lite
Desktop Control & Monitoring
N-Button creates up to 8 desktop widgets to control relays without any programming.

Order Today with This Board for Only $29
Stock#: N-Button Lite $45
 
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Shipping and Payment Information
Warranty Information
Order Online or Call Us At:
800-960-4287
Fax Purchase Orders To
417-646-5662 

RS-232 ProXR Lite Relay with A/D Conversion

Mounts as a Virtual COM Port on your Computer
Control Relays and Read 0 to 5 Volt Sensors
Control Through RS-232 of Your Computer or Device

RS-232 Still the Best Choice

While RS-232 is not built into some of today's motherboards, there are many applications where RS-232 is still the best choice.  Using a simple USB to Serial Adapter allows you to use RS-232 devices with ease.  This combination is actually better than using a device with a onboard USB port, because it eliminates most of your EMI problems while maintaining compatibility with today's computers.

Connects to Third Party Devices

RS-232 devices are perhaps versatile and most popular choices because of their ability to adapt to any other communication protocol and devices.  For instance, using 3rd party devices, RS-232 relay controllers can be controlled from GSM modems, Ethernet to Serial Adapters, WiFi to Serial Adapters, USB to Serial Adapters, Bluetooth to Serial Adapters, and Wireless Mesh Network to Serial Adapters.  RS-232 will continue to adapt to all emerging technologies, as the foundation for all communication technologies has provisions for RS-232 communications.  With the DB-9 or direct wire capabilities this controller can connect to third party devices including Crestron almost any way possible.

Integrates with Crestron

This relay can integrate with Crestron, in fact we have many Crestron customers using our devices.  The most important thing you need to know is how to format the data out the serial port of the Crestron device.  Our devices work with Hex/Decimal byte values.  Crestron systems usually work with Hex values, our devices start with a header byte of 254, followed by a command (ProXR controllers need 254, 108, 1 to activate the first relay).  So you need to convert all of these values to Hex for the Crestron system and send the bytes out the port.  For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.

Mounts as a COM Port

This ProXR Lite series controller connects to the RS-232 port of your computer and requires a 12VDC Power Supply.  This ProXR series controller connects to the serial port of your computer and will mount as a COM port on your PC.  Once powered up, the controller waits for a command.  A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes.  Once the command has been received, the controller processes the command, and sends you back ASCII character code 85 to signal the completion of your command.

ZRS ModulesRS-232 Relay ZRS Module

This board is equipped with a ZRS Module.  The ZRS communications module adds RS-232 communications to the board.  The ZRS module is powered from the serial port of your computer.  The board itself will require 12 volts of power and can be hard wired or you can purchase a "wall wart" type Power Supply at checkout.

Three ZRS Modules Available

There are three RS-232 connection options available for this controller.


ZRS-A
Wire It Up
ZRS-B
Plug It In
ZRS-AB
Both!

Choose Your Connector

Choose the connection that fits your needs. The ZRS-A connection is recommended for applications where hard wiring directly to the board is needed. ZRS-B has the full 9-Pin DB-9 connector on the board. The ZRS-AB Has the DB-9 connector but is is located off the board for applications where the board may be place inside an enclosure an the RS-232 connector needs to reach to the side of the enclosure.  You can choose one of these connection options at checkout.

Induction Capacitors

Induction CapacitorPerhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as anything with a magnetic coil, such as a motor, solenoid, or a transformer.  Controlling a inductive load using this relay controller requires the use of induction suppression capacitors.  The purpose of this capacitor is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay.  Without this capacitor, the lifespan of the relay will be greatly reduced.  Induction can be so severe that it electrically interferes with the microprocessor logic of our controllers, causing relay banks to shut themselves down unexpectedly.  In the case of Serial devices, it is not as severe as using a USB port a capacitor is still recommended.  Capacitors that we offer are available at checkout, for more information view our Induction Suppression Video.

USB Induction Solution

If USB is required, an RS-232 communications module will allow RS-232 communications between your PC and controller with no complications.  A USB to RS-232 adapter (available at checkout) can be used in combination with the RS-232 controller.  The RS-232 communications format with a capacitor effectively blocks induction to safe levels for a USB to RS-232 adapter to function without errors.

SPDT Relay Controller

SPDT RelayThis device has SPDT relays installed.  SPDT Single Pole Double Throw Relays have three connections - Common, Normally Open, and Normally Closed.  1/4" Quick DisconnectWhen the relay is off, the common is connected to the normally closed connection of the relay (see diagram to the right).  When the relay coil is energized, the Common swings over to the Normally Open Connection of the Relay .  You can wire the device you are switching to either the Normally Open or the Normally Closed position.  With the 20-amp version wiring is done directly to the Relay terminals using a common 1/4" quick disconnect terminal.  To the left is a picture of the connector that will connect to the relay (not included). 

For more information on selecting the correct relay amperage for your application see Choosing a Proper Amperage.

Easy Software Development

Most of our customers write their own program for controlling these devices and use almost any language to do this.  This boards supports the Serial Port Profile, meaning they will mount to the computer as a virtual com port making it very easy to send commands to the device.  This board will support almost any programming language you are comfortable with.

Plug-In for Visual Studio

The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line. The samples can be run in Visual Studio and fully customizable to your needs.  Over 40 samples included with this free download!  Component Library.

Base Station Software

Base StationBase Station will assist you in learning how this device functions and is the ultimate reference tool for setting up, testing and controlling this device.  Base Station software supports every feature of this device - no other controller manufacturer even comes close to offering this type of software.  Base Station works by communicating with your controller to identify the model and provides the appropriate graphical user interface for setting up and testing the identified device.  To help you get started and learn this controller Quick Start Guides are available for just about every feature.  As you discover a feature in Base Station a link is provided where you can easily download the Quick Start Guide.

ProXR Lite Relay

We've looked at the interface and the programming now let's take a look at the board design itself.  The ProXR Lite series controllers are machine manufactured for a highly accurate and reliable design.  Fully tested before they leave the production facility each ProXR Lite controller is ready to stand up to rigorous demands from heat, cold or vibration.  The best test of all is the numerous boards in the field from customers all over the world in all sorts of conditions.  Take it from us, these controllers will hold up!

Break-A-Way Tabs for a Smaller Design

The ProXR Lite relays have a great feature where space is a premium - Break-A-Way Tabs. The Break-A-Way Tabs allow most boards to fit in an optional undrilled plastic enclosure.  Snap off the Break-A-Way Tabs and you have a controller with a smaller profile when you need to fit in a tight space.

Not Expandable

Unlike it's big brother, the ProXR Series, the ProXR Lite series controllers are NOT expandable. The firmware still thinks 256 relays are available but the relay portion of the controller only responds to the first 1, 2, 4 or 8 relays in Bank 1.

Read Analog Sensors

We did NOT skip the Analog Input portion of the ProXR Lite.  All ProXR Lite controllers offer a 8-Channel 8/10-Bit Analog to Digital Converter in addition to relay control.  Read and control from 8 sensors per board from 0 to 5 volts!  Look for more on this below.

Full ProXR Enhanced Firmware Installed

This board has ProXR Firmware installed that responds to the full ProXR Command Set - it's just not expandable.  The ProXR Firmware is the industry leading firmware for controlling relays with more commands and functionality than any other board on the market.  The list of commands and parameters this board is capable of is extensive.  ProXR Enhanced is the newly released enhance version of the ProXR Firmware with more commands, more functionality and better control than ever before!  For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.

Compliance to ROHS StandardsRoHS Compliant

This board is led free and RoHS Compliant.  If your requirements are for RoHS compliant parts this board is manufactured with RoHS compliant led free parts and solder.

30-Day Warranty/Money Back Guarantee

ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 30 days!  Not to mention a 30-day money back guarantee!  If for any reason you are not happy with a relay purchased from Relay Pros, simply return it within 30 days and we will give you your money back!  Controllers that are damaged by our customers will not of course be warranted under any circumstances. 

Thousands or Relay Cycles

ProXR Lite series controllers are designed for long life, you should expect to get years of service from your controller and literally thousands of cycles from the relay(s) onboard.  With a 30-day warranty and a money back guarantee you have nothing to loose!  Place your order now, while everything is in front of you.

Shipping

The boards sold are brand new units shipped from our office conveniently located in Missouri.  These boards are completely tested before they are released for shipping  With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship.  If you have any questions please feel free to call our office at 800-960-4287 or e-mail us at sales@relaypros.com.

ProXR Lite Is Here!

A more streamlined manufacturing process brings a more durable, reliable and better relay board to the market.  Here's a lists of great features:

    User Friendly Board Design
  • Surface mount allows for a smaller more reliable board
  • Break-A-Way Tabs lets you decide the board's size
  • Screw terminal or direct relay connections make connecting to the board easy

    ProXR Lite Features
  • Works with the full ProXR Enhanced Command Set
  • 8-Channel 8/10-Bit Analog to Digital Converter
  • Highly reliable relay with industry leading command set

    ProXR Lite Limitations
  • This controller cannot be expanded

Analog to Digital Conversion

Analog Inputs are very special in that they are sensitive to voltage changes.  Analog to Digital (A/D) conversion is the process of converting a voltage in the range of 0 to 5VDC into a number that can be processed by custom software that you develop.  The ProXR Command Set will allow you to send a command to the board and read voltage levels from 0-5 volts using 8-bit resolution.  8-Bit resolution will read the voltage input (from 0 to 5VDC) and then is interpreted as a value from 0 to 255.  Zero being a contact closure input.

    For Example
  • A voltage input of 0 Volts is interpreted as a value of 0
  • A voltage input of 2.5 Volts is interpreted as a value of 127
  • A voltage input of 5 Volts is interpreted as a value of 255

So if you divide 5 Volts by 255 possible steps (0-255 for 8-Bit resolution), the board is sensitive to voltage changes as small as 0.019 Volts.  This controller has eight A/D inputs, each input is capable of reading a separate voltage from 0 to 5 VDC, provided all voltages can share a common ground.  This is particularly useful for reading temperature sensors (one temperature sensor is built into select boards mostly 4 & 8 channel, shared with analog input number 8).  A/D Inputs are also useful for reading light level sensors, thermocouples, switch closures, or just about any other kind of sensor you can think of.

A/D Sample Programs Available

Eight Different A/D Sample programs are available in the Component Library.  These samples are available as a free download and are compatible with Visual Studio. 


N-Button Lite

N-Button creates widgets or buttons to control up to eight relays without any programming. A new button will be created and placed on the desktop of your computer for each relay that you want to control. N-Button supports Serial Port/ USB and Network connection between PC and relay board. N-Button Manager makes it easy to add any type of button to the desktop and change the properties.


Analog to Digital meters can also be added to your desktop to instantly read the status of any sensor or probe you may have connected to the board.  Each meter is customizable and can be changed without any programming knowledge.

Relay Button widgets turn on/off relay directly. It has never been so easy to control relays before.
Relay Status widgets show status of the relay automatically.
A/D Meter widgets display the value of A/D channel automatically.
Customized Button widgets can send user-defined data to relay board. It also supports to open or run other file and application.

N-Button Lite version supports up to 8 widgets. If you want to add more than 8 widgets, you need upgrade to the standard version.

Attention: 0 to 5 Volt Input

Please Note: Users must ONLY apply a voltage between 0 and 5 volts to the A/D input on this controller, higher voltages will damage the controller.



Attention: Relays Provide No Voltage Output

Please Note: Relays do NOT provide a voltage output. They provide a contact closure output, exactly like the terminals found on a light switch at your local hardware store. Wiring to a relay will be slightly different depending on the model controller you choose.
For wiring information see our Relay Logic page.

 

This video is a basic introduction to the world of Computer Controlled Switching and Relays in general.
Also read our "Introduction to Computer Control" Article.

 

Watch to find out the advantages of wired communications and the differences between wired communications.
Also read our Articles on Communication Protocols.

 

This video will show you what Induction is and how to use Capacitors to Suppress it.
Also read our Article on Induction Suppression.

 

Learn about the mechanics, applications, and tricks to Analog to Digital Conversion.
Also read our Article on Analog to Digital Conversion.

 

This movie will show you how to find the Com Port assigned to your Relay Controller.
The first half of the video will show you how to do so in Windows Vista and the second half is using Windows XP.

 

This movie will explain the different expansion options that can be used with our controllers.

Resources