Primary States (Occupied Sequencing [Single Device]) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

Controller Tool Help
Product
Controls > Control Tools > Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
13.1
Revision date
2019-12-04

  • Satisfied: The sequencer transitions to Satisfied from Control Unreliable if the Process Variable becomes reliable.

    The sequencer transitions to Satisfied from Idle if configured for heating and no heating is required or configured for cooling and no cooling is required.

    The sequencer transitions to Satisfied from T Control if the temperature requirement is satisfied (configured for Heating and no heating is required of configured for cooling and no cooling is required) and any of the three following conditions is true:

    • The output control device control status is Low.
    • The output controller is not responding to this sequencer.
    • A large setpoint change has occurred. This later requisite happens when Fast Sequence Enable is True and the setpoint has changed by a value larger than the Setpoint Threshold.

  • Idle: The sequencer enters this state from Satisfied if configured for heating and heating is required or configured for cooling and cooling is required.

  • T Control: The sequencer enters this state from Idle when the fan is operational as indicated by the Fan Ready input element.

  • Control Unreliable: The sequencer enters this state if the Process Variable sensor is unreliable.