Did you know that you can add notes to any Point, Channel or Controller in the database and have those notes displayed first whenever you click one of those items? This is true in Text View, Hardware View or Graphics View (if the point is configured as clickable).
Continue reading George’s CBAS Tips, August 2020Formulas and Calculations is a Help feature that can be found on the System Menu > Help. In older versions of CBAS, this was found directly on the System Menu. Currently, there are 4 entries..
The first one is a duct area calculator for use in the Cubic Feet per Minute (CFM) Calculation on a VAV or UNI-B. The VAV-B has this built into its VAV-B Utility Program that is used when you initially set it up. All you have to know is the dimensions of the duct and whether it is round or rectangular. Just enter the size and a value for the area will appear. You can also use this value as the Duct Size on a VAV template for a UNI-B.
Continue reading George’s CBAS Tips, July 2020When working with Analog Inputs, sometimes you may find yourself needing to work with a 4-20mA device. These devices can be powered from an external DC voltage source or the LX controller itself – please refer to the label on the controller for wiring diagram examples.
We previously covered the topic of enthalpy and dew point in our article Enthalpy as it relates to free cooling in HVAC. In today’s article we will go over how to create these points in CBAS.
Continue reading George’s CBAS Tips, May 2020Most Computrols hardware products include various LEDs – these lights can be very helpful in providing visual feedback of various controller conditions and the status of communication channels.
The LX controller features several differences and improvements over the X-line with regards to LED indicator light functions.
Continue reading George’s CBAS Tips, April 2020The easiest way to program Software Points is by going to Hardware View, finding the controller then going to Points. In Editor Mode or in Live Edit you will see a line at the bottom of the points that says Add A Software Point. Click that to add a point.
Note that all the standard Software Point types are there but there are also a few select System Point types. For example, Controller Run Minutes is a Point that counts the minutes that a controller has been running without a reboot. This can be helpful in determining if a controller’s power is being interrupted
Did you know that you can now use 10K Type II temperature sensors in addition to 10K Type III in CBAS? This means that if Type II sensors are in place when retrofitting controllers at a site, you don’t have to change them.
The use of Type II is limited to the LX line of controllers. You must have a CBAS19 version and LX firmware dated January 15, 2020 or later for this to work.
Did you know that Binary Outputs can be locked out if your power supply is inadequate?
If the power being supplied to the controller is inadequate, all binary outputs will be locked in the OFF state until adequate power is returned. This way the controller continues to run, and if you have alarms setup, you will be notified that the equipment did not start. To know for sure whether this is Binary Lockout or your controller is defective, you must check Controller Diagnostics.
The MN-S series of LCD Display Sensors are a popular choice due to their simplicity and flexibility. Did you know that you can also use the sensor to view the serial address of the UNI, VAV or Stat Interface Board that the MN-S sensor is connected to?
