8-Channel Programmable Potentiometer with Wireless Interface

Digital Potentiomer

You've been asking for NCD to bring back their Digital Potentiometer and they heard you!  Back in production as a Legacy controller, this device will not become obsolete as long as Parts Remain Available!  Based on the MCP42xx0 Series Digital Potentiometers, use a computer to change the resistor values on 8 different programmable resistors with up to 256 taps per potentiometer.  Available in Potentiometer values of 10 kΩ, 50 kΩ and 100 kΩ with a wiper current of up to 1mA per channel.  Set the Power-Up Default State of the first 32 Potentiometers or read the Power-Up Default State of Each Potentiometer.  All other Potentiometers default to a center position for all wipers.

Resistance Output

Potentiometers have 3 Connections: A, Wiper, and B. When a low value is sent to the controller, the wiper moves closer to A, decreasing the resistance between A and the wiper (increasing the resistance between the wiper and B).  When a high value is sent to the controller, the wiper moves closer to B, decreasing the resistance between the wiper and B (increasing the resistance between the wiper and A).  The first 32 channels of wiper values can be set to a power-up default state.  It is possible to set the wipers on all outputs individually or simultaneously.

Send Commands to Program the Output Resistance

You can send commands to program the output resistance of each individual output, or you program all outputs at the same time.  Other commands allow you to set the startup resistance of each output.  The ProXR command set allows you to send commands to activate relays, deactivate relays, control all the relays at one time, plus you can send commands that tell a relay to turn on for a few seconds, minutes, or hours.  You can assign 16 timers to any of the 256 relays, and set the timers to go off after the duration has expired.

Expandable as Your Needs Grow

Built on the ProXR Framework, the ProXR Series has a long history of reliability while maintaining an easy learning curve using our Base Station Software as a guide for controlling and using this product.  Equipped with a UXP expansion port, add up to 256 Potentiometer Channels by chaining expansions to this main controller board.  Equipped with a XR Expansion port, this device is capable of controlling up to 256 relays of various types using XR Series relay controllers.  Simply plug in any XR Expansion Relay Controller and you are ready to switch solid state relays, DPDT signal relays, general purpose SPDT relays, and high-power relays.  Supports simple relay control commands such as off, on, or toggle functions as well as more complex commands for activating relays using integrated timers.

New Version Shipping

Beginning Late 2020, NCD made some updates to this product to make it better with increased component count while maintaining the same functionality and footprint.  The New Rev G2 Series adds a better power supply circuit to improve noise immunity while providing increased power availability.  We als changed the color of the circuit board to Black and updated branding to ncd.io with updated logos.

Legacy Product

This is now a Legacy Product, which means it will never go obsolete as long as critical parts are still available to us.  Built with their new high-speed pick and place assembly line, they can complete the surface mount assembly process at a rate of several thousand units per day with the potential to scale to any volume you could imagine, so you never need to worry about supply quantities or supply chain problems.

More Interfaces Available

This controller features a modular communications interface, capable of accepting USB, RS-232, Ethernet, WiFi, Bluetooth, communication modules.  Control potentiometers directly from cloud platforms such as Amazon AWS or MQTT when working with our WiFi Bluetooth USB Communications module.  Control Potentiometers using a USB Interface and a Virtual COM Port communications when using our USB interface.  Control Potentiometers over WiFi or Ethernet by opening a TCP socket to port 2101 and start sending commands (as shown in Base Station).

Base Station Compatible

Use Base Station software to quickly learn the command structure for potentiometer control using a simple Point and Click interface that supports all communication technologies.

Resistance Output

Please keep in mind; our POT series controllers offer a resistance output, and cannot provide a voltage output of any kind without additional electronics.  The potentiometers are limited to applications that operate in the 0 to 5V range.  Each potentiometer has a maximum current capacity of 1ma.  Exceeding these rating will immediately damage the controller.

Connections

Potentiometers have 3 Connections: A, Wiper, and B. When a low value is sent to the controller, the wiper moves closer to A, decreasing the resistance between A and the wiper (increasing the resistance between the wiper and B).  When a high value is sent to the controller, the wiper moves closer to B, decreasing the resistance between the wiper and B (increasing the resistance between the wiper and A). The first 48 channels of wiper values can be set to a power-up default state.  It is possible to set the wipers on all outputs individually or simultaneously. 

Output Resistance

Send commands to program the output resistance of each individual output, or you program all outputs at the same time.  Other commands allow you to set the startup resistance of each output.  The ProXR command set allows you to send commands to activate relays, deactivate relays, control all the relays at one time, plus you can send commands that tell a relay to turn on for a few seconds, minutes, or hours.  You can assign 16 timers to any of the 256 relays, and set the timers to go off after the duration has expired.  The complete command set can be found in the ProXR Quick Start Guide located in the Data Sheets tab above.

This Board is RoHS 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.

Precautions

This is an expansion module and must be connected to a compatible board to work.  This board will NOT work on it's own.  Please keep in mind; our POT series controllers offer a resistance output, and cannot provide a voltage output of any kind without additional electronics.  Integrated potentiometers are limited to applications that operate in the 0 to 5V range.  Each potentiometer has a maximum current capacity of 1ma.  Exceeding these rating will immediately damage the board.

Wireless Relay Control

Long Range Wireless Industrial Mesh

Long-Range Wireless Mesh networking is the ONLY communications technology NCD recommends on the factory floor, operating at a safe 900MHz.  Mesh technology will hop data from one location to another to reach its intended destination, users do not need to do anything other than make sure wireless modules stay within hopping range of each other.  We use the Digi 900HP-S3B module in many of our products, as this is the best industry has to offer.  With a 2 mile range between modules and up to 8 hops, it is possible to cover 16 miles of wireless territory using this technology.  Using high-gain antennas, this module is capable of communicating to a remote module up to 28 miles away!  Please note that data hopping only works between live devices.  Data will hop from sensors to gateways and modems.  Data will also hop between gateways and modems.

Long Range Wireless

XBee-PRO 900HP embedded modules provide best-in-class range wireless connectivity to devices. They are easy to setup and use, reliable and capable of transmitting a ling distance.  You will need an 900MHz modem that plugs into your USB port of your computer to talk any number of boards with a standard range of 2-miles and up to 15 miles.  You can choose the distance of the module installed at checkout.

XBee-PRO 900 RF Module

This board is equipped with an 900HP Module.  The XBee-PRO 900 RF module is ideally suited for less power-hungry, low-latency point-to-multipoint networking applications.  Capable of point-to-point, peer-to-peer and point-to-multipoint networking, The XBee-900 modules have a higher selectable transmitting power of 250mW.  This higher TX power allows for line-of-sight range up to 28 miles with the right antenna.  It is ideal for solutions where RF penetration and absolute transmission distance are paramount to the application.

Line-Of-Site Operation

As with any wireless technologies, for optimal performance it needs to be line-of-sight.  In other words the antennas of the board and modem must "see" each other to get the optimal range or even be able to communicate at all.  Mounting slots on the modem make it easy to attach to a wall to allow for line-of-site operation.

Standard Range Antenna

The XSC900SR Standard Range Antenna (distance of 2 miles) is included with the price of the controller.  The included antenna is a 6" whip antenna with an RP-SMA threaded connection.  The antenna will screw directly onto the wireless module.  NCD has tested this device at 2 Miles with excellent results using smaller antennas than what would be required to achieve the 28-Mile range achieved by the manufacturer.  All range tests are conducted in clear line-of-sight installations.  It is not possible for us to accurately predict range prior to purchase.  We cannot predict range inside buildings, using google map images, or predict interference that may be present at your location that would prohibit proper operation.

900MHz Wireless Modem

Plug the UXSCMSR_ZIGMO short range modem or UXSCMLR_ZIGMO long range modem into the USB Port of your computer.  The modem will mount as a COM port on your PC.  Open the COM port and start sending data to the modem.  The modem will forward your data to all Wireless XSC compliant devices within range (it is also possible to speak to a specific device when other controllers are in range).  The modem is also available at checkout.
XSC Modem

Sending Commands

Base Station Software is available at no charge to get you up and running fast (more on Base Station below).  Once powered up, the controller waits for a ProXR 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.

For Use in North America

For use in North America (United States, Canada, Mexico) Australia, Brazil, and Singapore also supported with changes to Channel mask settings.

Singapore:

The labeling of equipment is per Info-communications Development Authority of Singapore (Singapore IDA, www.ida.gov.sg/). This license is only for the Digi XB900HP radio and not the final product, so customers must be aware that they should find a consultant who is aware of the requirements and can guide them through the process of obtaining a license for their product with Singapore IDA. The license number is DA105737.

Canada Labeling Requirement:

Contains IC: 1846A-XB900HP
ISED (Innovation, Science and Economic Development Canada) This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. 

The XR Expansion Port

Add Relays as Your Needs Grow

The expansion board is compatible with the ProXR and Taralist Time Activated Relay boards.  The ProXR and Taralist boards are fitted with an XR Expansion Port where you can add expansion boards.  Expansion boards can be added until you reach 256 total relays.  As you continue to chain expansion boards onto an XR expansion port, the total number of available relay banks will increase.  Add expansion boards as needed in the future, whenever you require more relays simply order another expansion board.

Linking XR Expansion Boards Together

XR Expansion Boards consist of a XR Input and XR Output Connector.  Simply connect the XR Output of your ProXR Board to the XR Input located on the relay expansion board.  Chaining more relays is easy.  Simply connect the XR Output of your ProXR expansion board to the XR Input of your next expansion board.  Mix and Match different relay types as your application requires.  A 6″ expansion cable is included with this expansion board.

Will Not Operate Independently

This Expansion Board gets it's commands from the main ProXR or Taralist board and will not operate independently.  This board MUST be plugged into a ProXR or Taralist board to operate and will not function on it's own.

SPDT Relay Installed

This device has SPDT relays installed.  SPDT Single Pole Double Throw Relays have three connections - Common, Normally Open, and Normally Closed.  When the relay is off, the common is connected to the normally closed connection of the relay.  When the relay coil is energized, the Common swings 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 using screw terminal connections.  The maximum guage wire the terminal can handle is 14 ga but we have used up to 12 ga solid core for several applications with no issues.

Mix & Match

Expansion boards do not need to be the same relay amperage as the main board or other expansion boards.  Mix &anp; match expansion board to get the exact amperage for your switching needs. 

Essential Power Requirements

This and all expansion boards require 12 VDC to operate.  We offer a wall-wart type power supply at checkout if you need to plug this into a 110 wall outlet.  Applying Good clean power to the board is essential for the operation of the board.  Without good steady clean power from a regulated power supply the board simply will not function correctly.  The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated power supply and it plugs into the barrel connector on the board.  The output connector is a 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female R/A barrel connector.  We also carry an international power supply with interchangeable adapters for international customers. Learn More

Maximum Relay Rating Notes

ProXR is capable of expanding to an absolute maximum of 256 Relays.  In some cases, it may not be possible to control all 256 relays, particularly in applications where high noise levels may be involved.  Experimentation may be required, as it is not possible for us to guarantee all users will be able to utilize all 256 relays in every application.  Noise tends to accumulate when several expansions are connected together.  For best results, the XR expansion cables must be as short as possible.

This Board is RoHS 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.

2-Million Cycles

XR Expansion Boards are designed for long life just as the ProXR boards, you should expect to get years of service from expansion board and literally 2-million cycles from the relays on board.  With a 5-year warranty and a money back guarantee add more relay anytime the need arises!

5-Year Warranty/Money Back Guarantee

ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 5 years!  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. 

Data Sheets & Quick Start Guides

Below are the Data Sheets Quick Start Guides for this board.  These are the guides that will help you communicate and configure this board.