Primary States (Fan Supply Duct Static for UL-864-UUKL) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

• Off: The fan is off when the module is in this mode of operation.

• Min: The analog fan output (Supply Fan Percent Cmd) is zero and the fan control output (Supply Fan OnOff) is on when the module is in this mode of operation.

• Emergency On: When the mode is Emergency S-P and the pressure sensor is not reliable, the module enters this state and turns on the fan while retaining its last value for the fan percent command.

• Ramp: The supply fan slowly changes from its initial speed to 100% at a rate defined by the ramp rate input. This mode may be used during the Start/Stop sequence to start the fan in a controlled fashion.

• S-P Control: The module controls the supply duct static pressure to the duct static pressure setpoint while the module is in this mode of operation. If the pressure sensor is not reliable, the fan turns off.

• Emergency S-P Control: The module controls the supply duct static pressure to the Emergency Duct Static Pressure Setpoint while the module is in this mode of operation. If the pressure sensor is not reliable, the fan stays on at the Emergency On Percent Cmd.

• Emergency Off: The mode turns off.

• Hold : Holds the outputs at their current position. If the Output Overridden input is true, the Output Position input is passed to the Return Fan Percent Cmd. The module operates in this state when the output priorities are not 16.

The following table describes the State Output dependencies on FSCS SF Cmd, Mode, and Duct Static Pressure, and PID Tuning Reset reliability inputs.