Carrier Touch Pilot Control Series Control Manual

Active operating type Parameters' statusControltypeUnitstateLOFF L-C L-Sc Rem Net MastStart/Stop forcecommandRemote start/stop contactMastercontroltypeStart/StopscheduleNetworkEmergencyShutdownAlarmshutdownenable offyes offactive local offactive unoccupied local offactive open remote offactive unoccupied remote offactive disable network offactive unoccupied network offactive local unoccupied local offactive open remote remote offactive remote unoccupied remote offactive disable network network offactive network unoccupied network offactive disable no local onactive occupied disable no local onactive closed occupied disable no remote onactive enable occupied disable no network onactive local occupied disable no local onactive closed remote occupied disable no remote onactive enable network occupied disable no network onIMPORTANT: When the unit is stopping or there is a demand to stop the unit, compressors are stopped consecutively. In caseof emergency stop, all compressors are stopped at the same time.8 - STANDARD CONTROL OPERATIONS AND OPTIONS8.1 - Start/stop controlThe unit state is determined based on a number of factors,including its operating type, active overrides, open contacts,master/slave configuration, or alarms.The table given below summarizes the unit control type [ctrl_typ]and its running status with regard to the following parameters:■ Operating type: This operation type is selected using the Start/Stop button on the user interface.LOFF Local offL-C Local onL-SC Local scheduleRem RemoteNet NetworkMast Master unit■ Start/stop force command [CHIL_S_S]: Start/stop forcecommand can be used to control the chiller state in the Networkmode.- Command set to stop: The unit is halted.- Command set to start: The unit runs according to schedule 1.■ Remote start/stop contact status [Onoff_sw]: Start/stopcontact status can be used to control the chiller state in theRemote operating type.■ Master control type [ms_ctrl]: When the unit is the masterunit in a two-chiller master/slave arrangement, the master unitmay be set to be controlled locally, remotely or via network.■ Start/stop schedule [chil_occ]: Occupied or unoccupiedstatus of the unit.■ Network emergency stop command [EMSTOP]: If activated,the unit shuts down regardless of the active operating type.■ General alarm: The unit shuts down due to failure.8.2 - Cooling / HeatingThe table below summarises the unit operation based on thefollowing parameters:■ Unit On/Off status: This parameter indicates whether the unitis shut down (not authorised to start) or in operation (authorisedto start).■ Control type: Indicates whether the unit operates in Local,Remote or Network mode.■ Heating/Cooling selection in Local mode: The operating modeis selected via the user interface (GENUNIT menu).■ Heat/Cool switch status in Remote mode: This contact is activeonly when the unit is under remote control.■ Heat/Cool selection in Network mode: The network command[HC_SEL] permits heating/cooling control if the unit is inNetwork operating mode.Status ControltypeHeat/Coolin LocalHeat/Coolin RemoteHeat/Coolin NetworkCurrent unitoperatingmodeOff - - - - -On local cool - - coolingOn local heat - - heatingOn remote - on_cool - coolingOn remote - on_heat - heatingOn network - - cool coolingOn network - - heat heating8.3 - Control interlock contactThis contact checks the status of a loop (customer safety loop).It prevents the unit from starting if it is open when the delay atstart-up has expired. This open contact leads to an alarm shut-down, if the unit is running (alarm 10014).25