H134-E1-01A E5_N UsersManual (986777), страница 18
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The “SP ramp set value” parameter isset to OFF by default, i.e., the SP ramp function is disabled.Changes in the ramp set point can be monitored in the “Set point during SPramp” parameter (operation level). Use this parameter when monitoring SPramp operation.The SP ramp function operates in the same way when switching the set pointusing the multi-SP function.82Section 4-7Using the SP Ramp Function to Limit the SP Change RateParametersSymbolol-hol-lsl-hsl-lsprtsprualspOperation at StartupParameter: LevelMV upper limit: Adjustment levelMV lower limit: Adjustment levelSet point upper limit: Initial setting levelSet point lower limit: Initial setting levelSP ramp set value: Adjustment levelSP ramp time unit: Advanced function setting levelAlarm SP selection: Advanced function setting levelDescriptionTo limit the manipulated variableTo limit the manipulated variableTo limit the SP settingTo limit the SP settingTo limit the SP rate of changeUnit for setting the SPAlarm SP selectionIf the SP ramp function is enabled when the Controller is turned ON or whenswitching from STOP to RUN mode, the process value may reach the setpoint using the SP ramp function in the same way as when the set point ischanged.
In this case, operation is carried out with the process value treatedas the set point before the change was made. The direction of the SP rampchanges according to the relationship between the process value and the setpoint.PV < SPPV > SPSPSPSP rampSP rampPVSet pointSame rateof changeSet pointPVTimePower ONRestrictions duringSP Ramp OperationTimePower ON• Execution of auto-tuning starts after the end of the SP ramp.• When control is stopped or an error occurs, the SP ramp function is disabled.83Section 4-8Moving to the Advanced Function Setting LevelAlarms during SPRamp OperationThe operation of alarms during SP ramp operation depends on whetheralarms are set to be based on the ramp set point or the target set point (referto the following diagrams). The set point to be used is set in the “alarm SPselection” parameter.Alarm SP Selection = Ramp SP (Alarm Type: 1 (Upper/Lower Limits))TemperatureAlarm output ONAlarm output ONTimeAlarm SP Selection = Target SP (Alarm Type: 1 (Upper/Lower Limits))TemperatureAlarm output ONAlarm output ONTime4-8Moving to the Advanced Function Setting LevelTo move to the advanced function setting level, you must first cancel the protection applied by the “initial setting/communications protect” parameter.In the default setting, the advanced function setting level is protected and youcannot move to this setting level.1,2,3...1.
Press the O and M keys simultaneously for at least three seconds in operation level.NoteThe key pressing time can be changed in the “move to protect leveltime” parameter (advanced function setting level).2. The Controller moves to the protect level, and the “operation/adjustmentprotect” parameter is displayed.Operation/adjust-Protect Leveloapt ment protect0icpt1icpt084Initial setting/communications protect3. Press the M key once to move to the “initial setting/communications protect” parameter.4. Set the set value to 0.Section 4-9Using the Key Protect LevelOperation LevelC25PV/SP5.
Press the O and M keys simultaneously for at least one second to returnto the operation level.100Initial Setting Levelin-tInput type6. Move to the advanced function setting level.Press the O key for at least three seconds to move from the operationlevel to the initial setting level.5Initial Setting Levelamov-169Move to advanced functionsetting levelAdvanced function setting levelParameterinit initialization7.
Select the “move to advanced function setting level” parameter by pressing the M key.8. Press the D key, enter the password (−169), and then either press theM key or leave the setting for at least two seconds to move to the advanced function setting level from the initial setting level.offInitial Setting Levelin-tInput type9. To return to the initial setting level, press the O key for at least one second.510.
To return to the operation level, press the O key for at least one second.Operation LevelC25PV/SP1004-94-9-1Using the Key Protect LevelProtection• To move to the protect level, press the O and M keys simultaneously forat least three seconds in operation level or adjustment level. (See note.)NoteThe key pressing time can be changed in the “move to protect leveltime” parameter (advanced function level).• The protect level protects parameters that are not changed during Controller operation until operation is started to prevent them from being modified unintentionally.There are three types of protection: operation/adjustment protect, initialsetting/communications protect, and setting change protect.• The protect level settings restrict the range of parameters that can beused.85Section 4-9Using the Key Protect LevelOperation/AdjustmentProtectThe following table shows the relationship between set values and the rangeof protection.Leveloapt0OperationlevelSet valuePVPV/SPOthersAdjustment level0Can be displayed1Can be displayed2Can be displayed3Can be displayedCan be displayed andchangedCan be displayed andchangedCan be displayed andchangedCan be displayed andchangedCan be displayed andchangedCannot bedisplayed andmoving toother levels isnot possibleCan be displayedCan be displayed andchangedCannot bedisplayed andmoving toother levels isnot possibleCannot bedisplayed andmoving toother levels isnot possibleCannot bedisplayed andmoving toother levels isnot possibleCannot bedisplayed andmoving toother levels isnot possible• Parameters are not protected when the set value is set to 0.• The default is 0.Initial Setting/CommunicationsProtecticpt1This protect level restricts movement to the initial setting level, communications setting level, and advanced function setting level.SetvalueInitial setting levelCommunicationssetting levelAdvanced functionsetting level01Movement possibleMovement possibleMovement possibleMovement possibleMovement possibleMovement not possible2Movement not possibleMovement not possibleMovement not possible• The default is 1.Setting ChangeProtectwtptoffThis protect level restricts key operations.Set valueOFFDescriptionSettings can be changed using key operations.ONSettings cannot be changed using key operations.
(The protect levelsettings, however, can be changed.)• The default is OFF.• The all protect indication (set.86) will light when setting change protect isSection 4-9Using the Key Protect Level4-9-2Entering the Password to Move to the Protect Level• Protect level can be moved to only by display the password display andentering the correct password. (The user can set any password in the“protect level password” parameter.
If no password is set (i.e., if the password is set to 0 in the “protect level password” parameter), the passwordinput display to move to protect level will not be displayed and the protectlevel can be moved to directly.Operating ProcedureUse the following procedure to move to protect level.■ Example with a Password of 1234Operation LevelC25PV/SP100Protect LevelMove to protectpmov level1.
Press the O and M keys simultaneously for at least the time set in the“move to protect level time” parameter to move from the operation level tothe protect level.02. Press the U key to set the parameter to 1234 (password input).pmov12343. Move to the “operation/adjustment protect” parameter by pressing the Oor M key or leaving the setting for at least two seconds.Operation/adjust-Protect Leveloapt ment protect0■ Example with No Password SetOperation LevelC25PV/SP100Protect Leveloapt0Press the O and M keys simultaneously for at least the time set in theOperation/adjust- “operation/adjustment protect” parameter to move from the operation level tothe protect level.ment protectWhen a password is not set, the “operation/adjustment protect” parameterwill be displayed.87Section 4-9Using the Key Protect LevelSetting the PasswordOperating ProcedureUse the following procedure to set the password to move to the protect level.■ Example To set the Password to 1234Operation LevelC25PV/SP100Protect Leveloapt1.
Press the O and M keys simultaneously for at least the time set in the“move to protect level time” parameter to move from the operation level toOperation/adjustthe protect level.ment protection0Protect LevelPassword toto protectprlp movelevel2. Select the “password to move to protect level” parameter by pressing theM key.03. Press the O and U keys to set the parameter to 1234.(To prevent setting the password incorrectly, the U and O keys or D andO keys must be pressed simultaneously to set the password.)prlp1234NoteProtection cannot be cleared or changed without the password.
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