Fan array configuration - Johnson Controls - LIT-12014081 - RA-1270 - Airflow Measuring Station - AFMS

RA-1270 Advanced Thermal Dispersion Fan Inlet Airflow and Temperature Measuring System Technical Bulletin

Product name
AFMS
Document type
Technical Bulletin
Document number
LIT-12014081
Revision date
2022-08-04

Procedure

Fan array configuration enables the user to set the fan array settings and perform a field-calibration for a selected fan.

Table 1. Fan array configuration
Configuration selections Configuration options
Number of Fans Sets the number of fans the monitor network tracks.
Sensors Per Fan Sets the number of sensors on each fan. This applies to all fans.
Set Fan Sensors Assigns a monitor and sensors to a given fan. When Sensors Per Fan is set to 2, only the selection of a monitor is required as both sensors on that monitor are assigned to the selected fan. When Sensors Per Fan is set to 1, selection of a monitor and a sensor is required.
Field Calibration Configuration Opens the Field Calibration Configuration menu for a selected fan. Depending on the value of Use Calc’d Cal, either the manual calibration menu or the calculated calibration menu are available.
Fan Array Cal Performs the calculated field-calibration process as a fan array.
Reset Calibration Selection to reset one or all fan calibrations.
Note: Press ESC at any time to return to the previous menu and exit without changing any settings. If the Boot Fan Setup is completed, you can skip to Step 11.

To configure the fan array, complete the following steps:

  1. While in the Supervisor Menu, use UP or DOWN to scroll to Sensor Mgmt > Fan Arry Config
  2. Select Fan Arry Config and press ENTER to enter the Fan Array Configuration menu. The display shows Number of Fans > Sensors Per Fan.
  3. Press ENTER to modify the number of fans that are monitored by this monitor network from 0, no fans configured, to 16 total fans. The display shows Number of Fans.
  4. Use UP and DOWN to modify the value and press ENTER to confirm the value.
  5. Use UP or DOWN to scroll to Number of Fans > Sensors Per Fan.
  6. Select Sensors Per Fan and press ENTER to modify the number of sensors for each fan, 1 or 2. This setting applies to all fans on the monitor network. Press ENTER to confirm the value. The display shows Sensors Per Fan and either 1 or 2.
  7. Use UP or DOWN to scroll to Set Fan Sensors and press ENTER. Then use UP and DOWN to select the fan number, from 1 to 16, to assign the sensors. Press ENTER to confirm the selection.
  8. Use UP and DOWN to select the monitor to associate with the fan being setup, H is the host monitor, 0 through F are the client monitors. Press ENTER to confirm the selection. When Sensors Per Fan is setup as 1, the sensor associated with the fan being setup must be selected.
  9. Use UP and DOWN to select either sensor. Press ENTER to confirm the selection. When Sensors Per Fan is setup as 2, selecting the sensor number is skipped and both sensors of the selected monitor are assigned to the selected fan.
    1. When you select the assignment, there are two errors that can display. If there is an error, it is shown as the last character of the second line. If both errors are present, the display flashes between the two characters.
      • Error 1 displays as * when the selected assignment is not connected or does not communicate with the host. See Figure 1.
      • Error 2 displays as ! to indicate that the displayed assignment is already assigned to another fan. See Figure 2.
      Figure 1. Error with selected assignment
      Figure 2. Error with displayed assignment
  10. Scroll to the Field Calibration menu item and press ENTER. Use UP and DOWN to select the fan from 1 to 16 to edit its field-calibration. If Use Calc'd Cal is set to On, then the calculated menu is present, otherwise refer to the manual menu.
  11. To perform the calculated field-calibration as a fan array, scroll to the Fan Array Calibration menu item and press ENTER. This steps through the Fan Array Field Calibration process and performs the field-calibration for all configured fans simultaneously.
  12. Select Reset Cal from the menu to select all fans or an individual fan to reset the calibration. Use UP and DOWN and ENTER to confirm. A confirmation screen confirms reset the cal, use UP and DOWN to select and press ENTER to confirm.