Carrier AquaForce 30XV140 Controls, Start-up, Operation, Service And Troubleshooting Instructions

Also see for AquaForce 30XV140: Controls, start-up, operation, service and troubleshooting instructions

Contents

21Table 17 — Operating TypesOPERATING TYPE SELECTION — The operating typeis selected through the main interface by pressing the Start/Stop button .If the unit is running, pressing the Start/Stop button dis-plays a screen with a Confirm Stop button (see Fig. 21),which when pressed switches the chiller to Local Off mode.If the unit is Off, pressing the Start/Stop button shows a list ofoperating types with the currently selected type correspond-ing to the last running operating type (Fig. 20).Start/Stop Selection Screen — In Local mode (LEN bus), theTouch Pilot treats the Start/Stop button as a hotkey, and goesdirectly to the Start/Stop selection screen. In CCN mode, theTouch Pilot ignores Start/Stop key presses.Start a Stopped Machine — With the unit in the Local offmode, press the gray Start/Stop button to display the list ofoperating modes and select the required mode.Stop a Running Machine — To stop a running unit, press thegreen Start/Stop button . Confirm the unit shutdown bypressing Confirm Stop or cancel by pressing the Back button(Fig. 21).Once the unit has been stopped, the Home screen isdisplayed.NOTE: Start/Stop a machine is not authorized through a webconnection for security reasons.Machine On/Off Function — The machine operatingstate can be viewed by going to Main Menu  General Param-eters  Run Status. Table 18 summarizes possible unit states.Table 18 — Unit StatesTable 19 summarizes the unit control method and stop or gostatus with regard to the following parameters set in the TouchPilot:• Active operating type: Operating Type as selected on theunit Start-Stop screen.• CHIL_S_S: Current CCN chiller start/stop force com-mand (enable/disable). Main Menu  General Parame-ters  Net:Cmd Start/Stop.• Onoff_sw: Start-stop contact status when unit is underremote operating type. Main Menu  Inputs Status Remote On/Off Switch.• chil_occ state: Chiller occupied state. If the occupancyoverride input switch is closed, the chiller remains occu-pied regardless of the set point scheduled selection. MainMenu  General Parameters  Net:Cmd Occupied.• ms_ctrl: Master control type. This parameter status willdetermine if the master unit is going to be controlledlocally, remotely, or through CCN. Main Menu  Main-tenance Menu  Master Slave Control (0=disabled,1=master, 2=slave).• EMSTOP: CCN emergency stop command (enable/dis-able). Main Menu  General Parameters  EmergencyStop• Alarm shutdown: Unit is totally stopped due to alarm.OPERATING TYPE CONTROL METHOD OPERATINGMODES DESCRIPTIONLOCAL — OFF Local Off The unit is under Local control method. It will remain halted and will ignore allCCN network commands and remote switch contacts.LOCAL — ON Local OnThe unit is under Local control method and will be allowed to start. The controlwill ignore all remote control contacts (except the demand limit contact) and allCCN network force commands (except the Emergency Stop Command).LOCAL — SCHEDULE Local ScheduleThe unit is under Local control method and will be allowed to start if theschedule #1 is occupied (chil_occ). Otherwise, the unit will remain off. Thecontrol will ignore all remote control contacts (except the demand limit con-tact) and all CCN network force commands (except the Emergency StopCommand).NETWORK CCN NoneThe unit is under CCN control method and will be controlled by CCN forcecommands. The control will ignore all remote control contacts (except thedemand limit contact).REMOTE Remote NoneThe unit is under Remote control method and will be controlled by the start/stop and set point contacts. In this mode, no CCN force command can affectthe unit control except the Emergency Stop Command.MASTER Master MasterThe unit is configured as the master unit in a two-unit master/slave plant. Themaster unit control method can be done locally, remotely or through CCNcommands upon the master/slave configuration.BACKBUTTONa30-5894Fig. 21 — Confirm StopSTATE DESCRIPTIONOff Unit is commanded to be offStopping Unit is currently stopping (after a manual, emergency,or shutdown request). Next state will be Off.DelayUnit is in delay at start-up (waiting for the end of theOn/Off delay to be reached). Next state will beRunning.Running Unit compressor capacity is more that 0% (unit hasstarted running)Ready Unit compressor capacity is 0%. Unit is ready tostart.Override The compressor cannot start because of an override(SST, SCT, etc.)Tripout Unit is Off due to an alarmTest Unit is in Quick Test