Monitoring with an AFMS

Accessing Monitoring

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

  2. Select the Monitor tab.

Select the Monitor tab.

Monitoring Operation

Label Description

Outside Air Flow

The AFMS controller's current outside air CFM calculation displays here.

Return Air Flow

The AFMS controller's current return air CFM calculation displays here.

Supply Air Flow

The AFMS controller's current supply air CFM calculation displays here.

AFMS Status

NORMAL = No faults are detected.

LEARN MODE = Learning Mode is ON. (See Running AFMS Learning Mode.)

SPAN MODE = Learn Damper Span is ON. (See Setting AFMS Parameters.)

SERVICE = One or more faults are detected. (See Monitoring Faults.)

Control Mode

The saved Control Mode (OA FLOW CTRL, MAT CTRL, DMPR POSITION CTRL or PASS THROUGH) displays here. (See Controlling Airflow with an AFMS.)

Damper Position

The damper's percentage open displays here.

Occupancy

The default is OCCUPIED. If an occupancy sensor is used and the served space is vacant, UNOCCUPIED will display.

Outside Air Temp

The outside air temperature sensor's measurement displays here.

Return Air Temp

The return air temperature sensor's measurement displays here.

Mixed Air Temp

The mixed air temperature sensor's measurement displays here.

Air Exchanges/Hour

If the Space in Cubic Feet of the served space was entered (see Setting AFMS Parameters), the number of air exchanges per hour of that space displays here.

Damper Voltage

The current output voltage from the AFMS controller to the damper actuator displays here.

Monitoring Faults

Label Description

Outside Air Sensor Fault

FAULT = The outside air temperature sensor is missing or shorted.

Return Air Sensor Fault

FAULT = The return air temperature sensor is missing or shorted.

Mixed Air Sensor Fault

FAULT = The mixed air temperature sensor is missing or shorted.

Sensor Fault

FAULT = One or more of the three temperature sensors is missing or shorted.

Damper Control Fault

If the saved Control Mode is DMPR POSITION CTRL (see Commanding a Damper Position), FAULT will display if the damper position is more than 15% off from the Outside Air Damper Setpoint for longer than the Stroke Time (Seconds) (found under Configure > Damper). This indicates that the damper is not moving properly.

Outside Air Control Fault

If the saved Control Mode is OA FLOW CTRL (see Controlling Outside Air Flow), FAULT will display if Outside Air Flow is more than 15% off from the Outside Air Flow Setpoint for longer than the Stroke Time (Seconds) (found under Configure > Damper). This indicates that the damper is not moving properly.

Mixed Air Flow Fault

If the saved Control Mode is MAT CTRL (see Controlling Mixed Air Temperature), FAULT will display if Mixed Air Temp is more than 15°F off from the Mixed Air Temp Setpoint for longer than the Stroke Time (Seconds) (found under Configure > Damper). This indicates that the damper is not moving properly.

Outside Air Flow Fault

FAULT = The calculation of the airflow based on the damper characterization data (see Accessing the Damper Characterization Table) has differed from the calculation using the current temperatures by more than the tolerance (20% difference default) for longer than 10 minutes. Ensure that the equipment is in the same physical condition as it was when Learning Mode was run.

Mixed Air Temp Low Limit Control

ACTIVE = The damper is modulating toward closed to prevent freezing of the equipment because the Mixed Air Temp is lower than the Low Temp Limit (found under Configure > General).

INACTIVE = Either the Mixed Air Temp is higher than the Low Temp Limit, or Enable Low Limit is set to OFF.

See the related low limit information in Setting AFMS Parameters.

Inclinometer Orientation

CORRECT = The inclinometer is correctly mounted on the damper blade, with the orientation arrow pointing up.

INCORRECT = The inclinometer is incorrectly mounted. Remount so that the inclinometer's orientation arrow points up.