Application

Commissioning (parameterization)

The following table lists all parameters necessary for initializing the temperature controller.

After changes have been made to the parameters of the aaaPfwTempMparamFromHmi, aaaPfwTempPparamFromHmi, stPfwSupplyLineCfg structures, they must be saved via the respective structure. For this purpose, the following variables are provided in each structure:

SaveDelay: If a number in ms is entered here, the library counts from this number to zero. At zero, the file is saved and at -1, saving is inactive.
SaveParam: Triggers immediate saving.
LoadParam: Loads the parameters from the previously defined path.

During saving, a backup file is always created, so that the validity of the data is ensured at all times.

In the structure aaaPfwTempMparamFromHmi[...] the machine data are initialized:

Variable	Short description	Example value	Type
ZoneName	Name of the zone	Z1	STRING
AbsoluteHigh	Temperature upper limit for alarm and shutdown	250 °C	LREAL
AbsoluteLow	Temperature lower limit for alarm and shutdown	40 °C	LREAL
ExtruderComp	TRUE: active; FALSE: inactive	FALSE	BOOL
KpCool	P gain from PID controller (heating)	... %/°C	LREAL
KpHeat	P gain from PID controller (cooling)	.. %/°C	LREAL
TdCool	The D-part (damping time) of the temperature controller (cooling)	... s	LREAL
TdHeat	The D-part (damping time) of the temperature controller (heating)	... s	LREAL
TnCool	Integral action time from PID controller (heating)	... s	LREAL
TnHeat	Integral action time from PID controller (cooling)	... s	LREAL
TvCool	The D-part (rate time) of the temperature controller (cooling)	... s	LREAL
TvHeat	The D-part (rate time) of the temperature controller (heating)	... s	LREAL
Overshoot	Overshoot after self-optimization	... °C	LREAL
Tracking_Td	Time constant for control with large setpoint changes	... s	LREAL
Ramping_Rate	Ramp slope in °C/min	... °C/min	LREAL
Ramping_Tolerance	Up to which setpoint step-change should a ramp be used?	5 °C	LREAL
dTmax	max. slope of the path for a step response	... °C/s	LREAL
SensorOffset	Offset temperature from temperature sensor	0 °C	LREAL
SettlingTime	path-specific time base	5 s	LREAL
SupplyLoad_Cooler	Cooling capacity	100 W	LREAL
SupplyLoad_Heater	Heating capacity	1000 W	LREAL
SupplyLoad_Tolerance	If the measured heating power deviates from this tolerance, an alarm is triggered.		LREAL
TuneEnd	Final temperature of self-tuning in relation to setpoint [%]	80%	LREAL
TuneKp	Setting factor for the Kp value	01. Feb	LREAL
TuneTd	Setting factor for the Td value	0.2	LREAL
TuneTn	Setting factor for the Tn value	2	LREAL
TuneTv	Setting factor for the Tv value	0.5	LREAL
TuneY	Power output during self-tuning	100%	LREAL
TuneTrackingTd	Setting factor for the TrackingTd value	0	LREAL
L_LoadIdle	Discharge resistance to the environment	2 W/°C	LREAL
ErrorHeatingFactor	Heating factor with control switched off	20 %	LREAL
fPwmStdMaxOnTime	Maximum heating on time when the setpoint is selected. At zero the MaxPWMOnTime of the SupplyLine is used. Value range 0.0...1.0	0.0	LREAL
fPwmMaxOnTime	Maximum heating on-time when one of the setpoints in the array is selected. At zero the MaxPWMOnTime of the SupplyLine is used. Value range 0.0...1.0	20 %	LREAL
fPwmMinOnTime	Minimum heating on time when the setpoint is selected. At zero the PwmMinOnTime of the SupplyLine is used. Value range 0.0...1.0	20 %	LREAL
Weighting_C	Factor between the determined heating and cooling parameters		LREAL
fc_OnTime	Switch-on time of forced cooling		LREAL
fc_OffTime	Duration for normal regulation		LREAL
OutputSel_H	Heating signal selection (see E_TcPfw_TctrlOutSelect)	1	INT
OutputSel_C	Cooling signal selection (see E_TcPfw_TctrlOutSelect)	3	INT
TempSensTerm	Sensor terminal type must be selected by E_TcPfw_TerminalType.
SensorType	Type of sensor must be selected by E_TcPfw_TempSensType.
TermChannel	Sensor terminal channel	1	INT
ExtruderId	Extruder number	1	INT
ModuleId	Assigns a temperature group to zones	1	INT
ZoneId	Numbering of the zone of a machine	1	INT
SupplyId	Supply group to distribute the power evenly among the three phases	2	INT
CJ_CompMode
CJ_CompZone
SensTermSwapIdx
HeaterSwapIdx
CoolerSwapIdx
InUse	TRUE: zone in use; FALSE: zone not in use The zone is only active in case of feedback from ST_TcPfw_TempToHmi_Itf[x].InUse. Requirement: ModuleId<>0; ZoneId<>0; SupplyId<>0	TRUE
UseCooling	Zone has a cooling.	TRUE	BOOL
ExtruderCompEna	Activation of extruder compensation	FALSE	BOOL
TuneCooling	Self-optimization for cooling	FALSE	BOOL
Tune_IdleLoad	Self-optimization for IdleLoad determination. This would follow the heating power determination.	TRUE	BOOL
Autotune	Self-optimization for heating	FALSE	BOOL
Enable	Zone is active	TRUE	BOOL
Update	The user interface indicates that values in this structure have been changed.	FALSE	BOOL
EnaExtruderBlock	reserved	FALSE	BOOL
NoFanWhileTrackDown	Do not use a fan when cooling down.	FALSE	BOOL
Ena_TuneIdleLoad	Activate calculation of the discharge resistance.	FALSE	BOOL
LooptestUpdate	Activate power measurement in this zone.	FALSE	BOOL
EnableErrorHeating	Activate that the heating tape is supplied with a predefined power (ErrorHeatingFactor).	FALSE	BOOL
NoFanWhileTrackDown	reserved	FALSE	BOOL
Ena_TuneIdleLoad	reserved	FALSE	BOOL
OpenloopHeating	Set output with a predefined output	FALSE	BOOL
fc_Enable	Activation of forced cooling	FALSE	BOOL
HibernateI_Cool	Freezing of the I-part for heating	FALSE	BOOL
hibernateI_Heat	Freezing the I-part for cooling	FALSE	BOOL
bSavingParams	Signal that machine data are currently being stored.		BOOL
bLoadParams	Loads the machine data	FALSE	BOOL
ReadBack	reserved	FALSE	BOOL

In the structure aaaPfwTempPparamFromHmi[...] the product data are initialized:

Variable	Short description	Example value	Type	Note
Setpoint	Setpoint during operation	180 °C	LREAL	must be parameterized
StandbySetpoint	Setpoint in standby	60 °C	LREAL	must be parameterized
Threshold_M	The inner negative tolerance limit, referred to the setpoint (threshold for the on-off controller)	-5 °C	LREAL	must be parameterized
Threshold_MM	The outer negative tolerance limit, referred to the setpoint	-10 °C	LREAL	must be parameterized
Threshold_P	The inner positive tolerance limit, referred to the setpoint (threshold for the on-off controller)	+5 °C	LREAL	must be parameterized
Threshold_PP	The outer positive tolerance limit, referred to the setpoint	+10 °C	LREAL	must be parameterized
Update	The user interface indicates that values in this structure have been changed, relative to the setpoint.		BOOL	optional

In the structure stPfwSupplyLineCfg[...] the settings for the PWM are initialized and the connection between a zone and the supply network is established.

This information is only important for heating power monitoring and zooning. If both are not used, it is sufficient to initialize the array with one element.

Plastics machines are sometimes designed to contain several temperature control groups (extruders1..n, heating channels, etc.). These are partly supplied separately. These supply units are called supply groups in the framework. Each supply group consists of four supply lines (phase 1..3 and multi-phase elements) . Several heating zones can be connected to one supply line. The first supply line of a group represents the supply for the heating zones, which are connected between L1 and the neutral conductor. The second for L2 and N and the third for L3 and N. The fourth supply line includes all heating zones that are connected between two outer conductors in star or delta.

Variable	Short description	Example value		Parameterization level
fPwmCycleTime	PWM cycle time	0.1 s	LREAL	yes
fPwmMaxOnTime	PWM maximum switch-on time (related to cycle time)	0.9 for 90%	LREAL	yes
fPwmMinOnTime	PWM minimum switch-on time (related to cycle time)	0.1 for 10%	LREAL	yes
fPwmMaxOnC	PWM maximum switch-on time (related to the cycle time) for cooling	0.1 for 10%	LREAL	yes
fPwmMaxRampLoad	reserved		LREAL	optional
fActSupplyLoad	If a power measurement is performed, the current power can be read here.	... W	LREAL	optional
fActSupplyCurrent	If a power measurement is performed, the current currently measured can be read here.	... W	LREAL	optional
fSupplyLoad	The predicted total power of the supply line.	... W	LREAL	optional
fSupplyMatch	The ratio of fActSupplyLoad to fSupplyLoad		LREAL	optional
nPwmFactorC	For PWM cooling, nPwmFactorC is multiplied by "fPwmCycleTime" (reason: cooling is often controlled via contactors).	1	INT	must be parameterized

In the structure aaaPfwTempToHmi[...] the following display values are written back to the HMI:

Variable	Short description
ActualTemp	Current temperature of the zone	LREAL
SupplyMatch	Current measured power ratio (actual power/target power)	LREAL
ActCurrent	Current measured from the zone	LREAL
FileErrId	Error number if loading or saving of the machines or product data fails.	DINT
ErrorId	Error number	WORD
ModuleId	Module number	INT
PowerLevel	Heating power output of the controller	LREAL
ZoneId	Zone number	INT
Cooling	The zone is cooling.	BOOL
Enable	The zone controls to its setpoint.	BOOL
Error	The zone is heating.	BOOL
Heating	The zone is in error state.	BOOL
FileErr	The zone could not successfully load or save the machine or product parameters.	BOOL
InUse	Zone is used. In the machine parameters must be: ModuleId<>0; ZoneId<>0; SupplyId<>0 and InUse:=TRUE	BOOL
OnStandBy	Standby temperature is active as setpoint.	BOOL
TuningActive	Self-optimization active	BOOL
TuningDone	Self-optimization successful	BOOL
IdleLoadActive	Calculation of the discharge resistance active	BOOL
IdleLoadDone	Calculation of the discharge resistance successful	BOOL
LooptestActive	Activation of the power control of the individual heating tapes	BOOL
ExtruderCompActive	Feedback that the extruder compensation is being taught.	BOOL
ExtruderCompDone	Feedback that the extruder compensation was successfully taught.	BOOL