BASpi Lead-Lag Control Panel at a Remote Unmanned Broadcast Site @ 12,000 ft. Elevation


I always love hearing about BASpi applications out there – it fills my heart!

Remote and unmanned are two key words which certainly imply the need for automation. A BASpi-6U6R was installed at this broadcast site located at 12,000 ft. elevation to monitor and control a lead-lag application of 2 AC units based on run-time. Check out the view from this site!


“I am using the BASpi to control 2 latching relays to swap the AC units every 24 hrs. of actual runtime in a remote, unmanned broadcast site. I used the LeadLag component from the CControls_HVAC Sedona kit to program 2 BASpi units for use as AC Lead-Lag with latching relays…. I like the run-proof built into the LeadLag component…it simplifies the programing. I am also controlling the air dampers and exhaust fan from the BASpi. I am using the damper and exhaust fan as an economizer separate from the AC for better control. Controlling the Econo with the BASpi will reduce the electric consumption by approx. 50% because it lets the shelters cool via outside air when the temperature allows. The outside air seldom gets above 65 degF at this site… it is the solar intensity that heats the building the most.”

A 24VDC to 5VDC power supply was installed in order to utilize the battery-backed power supply already in the control panel. This allows alarms, cameras, and system status to be accessed in the event of power failure.

The BASpi Universal Inputs are set for Binary Inputs used with current relays for monitoring the Evap Fan, Condenser Fan, and Compressor for a command fail application which will swap them if one had failed. This also allows for a “fail” email to be sent with actual part numbers, so a work order can be handed off for repair without a very expensive trouble shoot call.

These are in a remote, difficult to get to without 4-wheel-drive unmanned site and is part of the ROI for the site manager. A local supervisor with cloud connection provides a solution to bring these sites to one login screen for the site manager.

“I really like the ability to program the controller for stand-alone operation using Sedona and be able to grab the points from BACnet/IP over Ethernet or Wi-Fi instead of using a “dumb” IO box …. Helps save processor power in the supervisor as well. I am excited about the potential for the BASpi in many applications for a lot of reasons, but most importantly…. Sedona programming and cost-effective solution. Works very well, thanks!”


Tell me how you are using your BASpi!!


Leave a Reply

Your email address will not be published. Required fields are marked *