4-20mA to 0-10VDC Conversion When 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.
Enthalpy, Dew Point and Wet Bulb Calculations in CBAS 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.
What do the lights on the LX controller mean? Most 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
How to Program Software Points in CBAS The 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
Add or Change Point Type 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
Controller Voltage 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,
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?
Using CO2 sensors with VAV-B We were recently asked if it would be possible to utilize CO2 sensors with the VAV-B in order to control CFM setpoints. At this particular site, they want to add CO2 sensors to some of the VAV-Bs and command the CFM setpoint to the MAX
Did you know that you can simulate your logic programming without having to go into Real Mode or wiring up controllers? This can be really handy, especially when testing central plant operation without having to do it live.
Simply put, Computrols provides the most economical-to-own building automation solution on the market today. We empower our users by providing robust yet simple solutions that allow our customers to largely manage their building automation systems in-house.
