org.lsst.ccs.subsystem.refrig

Class ColdCompressor

java.lang.Object

org.lsst.ccs.subsystem.refrig.Compressor

org.lsst.ccs.subsystem.refrig.ColdCompressor

All Implemented Interfaces:

org.lsst.ccs.framework.HasLifecycle

public class ColdCompressor
extends Compressor

Controls a refrigeration cold compressor.

Author:

Owen Saxton

Nested Class Summary

Nested classes/interfaces inherited from class org.lsst.ccs.subsystem.refrig.Compressor

Compressor.LimitData, Compressor.SwitchDevice

Field Summary

Fields inherited from class org.lsst.ccs.subsystem.refrig.Compressor

cmprPowerChan, discPressChan, discTempChan, gotCommand, liquidTempChan, maq20Devc, phaseSepTempChan, suctPressChan, suctTempChan

Constructor Summary

Constructors

Constructor and Description
ColdCompressor() Constructor.

Method Summary

Modifier and Type	Method and Description
org.lsst.ccs.framework.ClearAlertHandler.ClearAlertCode	canClearAlert(org.lsst.ccs.bus.data.Alert alert) Enables an alert to be cleared.
List<String>	getValveNames() Command to get the valid valve names.
void	postInit() Initializes the cold compressor control.
void	resetVfdFault() Command to reset a VFD fault condition.
void	setValvePosition(String valve, double posn) Command to set a valve position.
void	setVfdFrequency(double freq) Command to set the VFD frequency.
protected boolean	updateState() Updates the compressor state.

Methods inherited from class org.lsst.ccs.subsystem.refrig.Compressor

areEqual, getIndex, getState, getSwitchNames, postStart, resetLatches, setCmprPowerDelayLimit, setCmprPowerDelayTime, setCmprPowerImmedLimit, setDiscPressDelayLimit, setDiscPressDelayTime, setDiscPressImmedLimit, setDiscTempDelayLimit, setDiscTempDelayTime, setDiscTempImmedLimit, setDiscTempLowImmedLimit, setIndex, setLiquidTempDelayLimit, setLiquidTempDelayTime, setLiquidTempImmedLimit, setPhaseSepTempDelayLimit, setPhaseSepTempDelayTime, setPressDiffImmedLimit, setSuctTempImmedLimit, setSwitchOn, updateSystem

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.lsst.ccs.framework.HasLifecycle

build, init, postBuild, postShutdown, shutdown, start

Constructor Detail

ColdCompressor

public ColdCompressor()

Constructor.

Method Detail

postInit

public void postInit()

Initializes the cold compressor control.

Specified by:

postInit in interface org.lsst.ccs.framework.HasLifecycle

Overrides:

postInit in class Compressor

getValveNames

@Command(type=QUERY,
         description="Get the valid valve names",
         level=0)
public List<String> getValveNames()

Command to get the valid valve names.

Returns:

The index value

setValvePosition

@Command(type=ACTION,
         description="Set a cold compressor\'s valve position")
public void setValvePosition(@Argument(description="Valve name")
                                                                                                                   String valve,
                                                                                                                   @Argument(description="Valve position")
                                                                                                                   double posn)
                                                                                                            throws RefrigException

Command to set a valve position.

Parameters:

valve - The valve name

posn - The valve position (0 - 1)

Throws:

RefrigException

setVfdFrequency

@Command(type=ACTION,
         description="Set a cold compressor\'s VFD frequency")
public void setVfdFrequency(@Argument(description="Frequency")
                                                                                                                 double freq)
                                                                                                          throws RefrigException

Command to set the VFD frequency.

Parameters:

freq - The frequency

Throws:

RefrigException

resetVfdFault

@Command(type=ACTION,
         description="Reset a cold compressor\'s VFD fault")
public void resetVfdFault()
                                                                                                      throws RefrigException

Command to reset a VFD fault condition.

Throws:

RefrigException

updateState

protected boolean updateState()

Updates the compressor state. This should be called at regular (short) intervals to maintain the correct state

Overrides:

updateState in class Compressor

Returns:

Whether any value changed

canClearAlert

public org.lsst.ccs.framework.ClearAlertHandler.ClearAlertCode canClearAlert(org.lsst.ccs.bus.data.Alert alert)

Enables an alert to be cleared.

Overrides:

canClearAlert in class Compressor

Parameters:

alert - The alert

Returns:

Action code