Installing a Wiegand Reader to the DC20

Topics included in this article:

• Wiegand Protocol
• Wiring a Wiegand Reader to the DC20
• Setup in Rhombus Console
  • Add a Wiegand Reader
  • Assign to a Virtual Door
  • Delete a Wiegand Reader
• Helpful Links
• Contact Support or Sales

Wiegand Protocol

The Wiegand protocol connects card readers and access control systems by transmitting data between devices. When a card is swiped, the system generates a unique binary code representing the card's ID. This code is sent to a controller, which checks it against a database of access permissions.

Wiring a Wiegand Reader to the DC20

• D0 (DATA0): Figure 2 yellow wire, minimum 24 AWG, 300 ft max run.
• D1 (DATA1): Figure 2 light blue wire, 24 AWG, 300 ft max run.
• GND: Figure 2 black wire, solid or stranded, twisted pair, minimum 24 AWG, 300 ft max run.
• +12V: Figure 2 red wire, the 12VDC reader power supplies are rated to 660mA each.
• Terminals [OUT1] and [OUT2] are configurable in Rhombus Console to support LEDs and buzzers.

*NOTE: We recommend you consult the appropriate federal, state, and local authorities for any relevant regulations at the time of installation. 

Figure 1. Wiegand port location on the DC20.

Figure 2. Wiegand port wiring configuration. 

Setup in the Rhombus Console

Add a Wiegand Reader

1. Navigate to "Settings," select "Door Controllers," and then click on the controller you wish to configure.

2. Click "Quick Add" or "Configure" in the "Wiegand Ports" section. Ensure you are configuring the number port corresponding to the physical number port that the reader is connected to on the DC20. Optional: We offer the ability to check if a Red or Green LED is connected.  Note: The Rhombus web console does not auto-recognize Wiegand readers, so they must be manually added.

Assign to a Virtual Door

Assign the Wiegand reader to an already created door by selecting "Edit."

Add reader to a new door by selecting "Create door."

For more information on configuring a virtual door, please visit the Controller Settings and Access Control Door Configuration article. 

Delete a Wiegand Reader

1. Navigate to "Settings," select "Door Controllers," and then click on the controller you wish to configure.

2. "Edit" the virtual door that has the Wiegand reader associated with it. Uncheck the Wiegand reader from the virtual door, then click "Next" until you are able to save the virtual door.

3. Once the reader is unassociated with the virtual door, the "Delete" option will show up for the reader in the "Ports" location. Click "Delete" to remove the reader.

Helpful Links

• Wiegand vs OSDP
• DC20 Overview
• Installing/Registering the DC20
• Controller Settings and Access Control Door Configuration

Contact Support or Sales

Have more questions? Contact Rhombus Support at +1 (877) 746-6797 option 2 or support@rhombus.com.

Interested in learning more? Contact Rhombus Sales at +1 (877) 746-6797 option 1 or sales@rhombus.com.