How do I add a Siebe Display Stat to a VAV?
The Invensys/TAC MN-S3-700 or MN-S3-HT Display Stat can also be programmed on a Host or Secondary Channel of an Internet controller by using a Computrols Stat Interface Board (SI-S3). There are separate instructions for that purpose. Once you have wired the MN-S3 to Analog Input 3 of the VAV controller, you are ready to program it in Editor Mode of CBAS. First program the VAV controller, then follow the instructions below. Once you have programmed the VAV controller, find it in Hardware View. Click the VAV, and then click Channels.Click “Siebe Channel”, and then Controllers. (Originally, the S3 was a Siebe product)There is only one address available on the Siebe Channel hosted by a VAV controller. Click Add Controller.Give it a name that describes its location.For Configuration, select S3. (There is only one choice) Now, you can add points to the MN-S3. Unfortunately, you cannot use a Template at this time. Click the controller and click Channels. Click Siebe Channel and click Controllers. You will see the Display Stat listed. Click the Display Stat and click Points. You will see a list of points with “Add A Point” next to each. These points are standard points, but they need to be added in order for them to show up in Text View. Click Add A Point next to the points you want to use. Give the point a descriptive name and select the one available configuration. Click Add Point Now.The functions of the points are pre-determined and most are obvious. Here’s a description of some of the less obvious ones:
Mode: There are 4 modes, which determine what is seen in the display on the Display Stat itself. Temp: Stat display shows the Space TempSPTemp: Display shows Setpoint when in OCCupied status, shows Space Temp when in UNOCCupied status. Setpnt: Shows Setpoint all the timeAltern: Display shows Alternate Display Number, which can be set to anything
Hum: Displays Relative Humidity if the point is programmed and you are using a MN-S3-HT Alternate Display Number: Put in the number you want to be displayed when in Altern Mode.Unoccupied/Occupied Enable: When enabled, this allows you to change Occupied/Unoccupied mode from the button on the Display Stat.
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