Setting AFMS Parameters

Before Beginning

Before setting an AFMS's parameters in AFMS , ensure that the Prerequisites have been met.

Caution: Select the appropriate application on the AFMS controller before configuring other settings. Changing applications after configuration will restore most parameters to their defaults. See "Selecting an Application" in the AFMS NetSensor Application Guide, found on any AFMS controller's product page.

Setting the Parameters

  1. Go to AFMS , then select the Device Name of the AFMS controller.

  2. Select the Configure tab.

  3. For Supply Area, enter the measurement (in square feet) of the cross section where the supply airflow pickup tubes were installed.

    Note: For guidance about the location of the pickup tubes, see "Mounting the Supply Airflow Pickup Tubes" in the Airflow Measurement System Installation Guide, found on any AFMS controller's product page.

  4. Choose to either leave Enable Low Limit set to ON (the default), or to turn it OFF.

    Warning: ON is recommended to prevent freezing of equipment. If not needed (due to your equipment's particular nature), you might choose to turn it OFF.

  5. Either leave Low Temp Limit set to the default (37°F), or adjust the value.

    Note: If the mixed air temperature reaches the Low Temp Limit set here (and Enable Low Limit is set to ON) the outside air damper will modulate toward closed to prevent freezing of the equipment.

  6. For Space in Cubic Feet, enter the cubic foot measurement of the space served by the equipment.

    Note: The value entered will be used to calculate Air Exchanges/Hour (see Monitoring Operation).

  7. For Stroke Time, enter the time (in seconds) that it takes for the damper to go from 100% open to 100% closed.

  8. For Damper Reverse Action:

    • Select NORMAL if the greater the output signal to the damper actuator is, the more the damper opens (if 10 volts = 100% open).

    • Select REVERSE if the greater the output signal to the damper actuator is, the more the damper closes (if 10 volts = 100% closed).

  9. For Actuator Voltage, select the voltage range of the damper actuator (2 to 10 volts or 0 to 10 volts).

  10. Select ON for Learn Damper Span.

    Note: Before the AFMS controller can run Learning Mode, it must learn the minimum and maximum incline of the damper using the inclinometer.

  11. Select Save.

    Note: "The process of updating points is successfully started" appears briefly. When the damper has stroked the opening, Damper Span Learned will report LEARNED.

Continue to Calibrating the AFMS's Sensors.