Manuals / Samson / Household Appliance / Heating System

Samson 5476 Limitation using 0/4 to 20 mA signal, Locking manual levels, System-widefunctions

Models: 5476

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7.10.2 Limitation using 0/4 to 20 mA signal

System-wide functions

Functions	WE	Configuration
Current input for flow rate	OFF	FB22 = OFF
measurement
Flow rate or capacity limitation	OFF	FB23 = ON
	500 pulse/h	Max. limit / 3 to 500 pulse/h
	1.0	Limiting factor / 0.1 to 10
	500 pulse/h	Max. limit for DHW / 3 to 500 pulse/h
	1.0	Limiting factor / 0.1 to 10

7.10.2 Limitation using 0/4 to 20 mA signal

A connected heat meter (terminals GND/15 with a 50 Ω resistor connected in parallel) with a 0/4 to 20 mA output can be used to limit the flow rate in the system. All limit values are given in the unit “cubic meters per hour“ [m3/h]. As a result, it is necessary to se in addition to Lower measuring range value 0 or 4 mA also an Upper measuring range value (flow rate at which the 20 mA signal is issued) in unit [m3/h]. When the flow rate reaches the current Maximum limit , the controller switches in control circuit RK1 to flow rate control with the Maximum limit acting as the set point. If the flow temperature exceeds its normal set point by more than 5 °C during this time, the flow temperature control is started again. If the flow rate falls below the set Mini- mum limit, the control valve of control circuit RK1 is temporarily closed. The normal control op- eration is started again when the flow temperature falls below its normal set point by 5 °C.

Note!

In systems Anl 4 to 6 and 11, the valve of the heating circuit is affected during an active flow rate limitation.

Functions	WE	Configuration
Current input for flow rate measurement	OFF	FB22 = ON, select “Lower measuring range”
Flow rate or capacity limitation	OFF	FB23 = ON
	10.00 m3/h Upper measuring range / 0.1 to 650 m3/h
	0.01 m3/h Minimum limit/ 0.01 to 650 m3/h
	9.00 m3/h	Maximum limit / 0.01 to 650 m3/h

7.11 Locking manual levels

The number of access options to the controller can be restricted by locking the manual level. When the locking is active, the mode switches positioned at the manual mode do not have any effect concerning manual activation of the valves. Merely, reactions occur as if the mode

62EB 5476 EN

Image 62

Samson 5476 Limitation using 0/4 to 20 mA signal, Locking manual levels, System-widefunctions

Contents

Heating and District Heating Controller TROVIS Mounting and Operating Instructions EB 5476 ENAutomation System Firmware version Edition DecemberDisclaimer of liability Contents ContentsContents 6.9.2Contents 9.1Controller with RS-232-Cport . . . . . . . . . . . . . . . . . . . . .1.1.1 Operating keys 1 Operation1.1Operating elements Operation1.1.2 Operating switches Operation1.2Operating modes Operation1 2 3 4 5 6 7 8 1.3DisplayOperation Fig. 1 · Icons1.4Displaying data Operation1.5Setting the controller time OperationTime schedule 1.6Setting the times-of-useOperation Heating circuitOperation Select datapoint for times-of-use Display1.6.1 Entering public holidays Operation1.6.2 Entering vacation periods Operation1.7Correcting temperature set points OperationStart-up 2 Start-up 2.1Setting the system code number2.2Activating and deactivating functions Proceed as follows Switch to the parameter level Start-upStart-up 2.3Changing parameters2.4Enter key number 2.5Calibrating sensors Start-up2.6Resetting to default values Start-up3 Manual operation Manual operationSystems SystemsSystem Anl Default settingsSystems FB13FB13 = OFF Default settingsSystems Without RFWithout RF SystemsFB13 = OFF FB20 = ONWithout RF SystemsFB13 = OFF FB20 = ONFB13 = OFF Default settingsSystems Without RFWith RüF1 SystemsSolar With SF1FB13 = OFF Default settingsSystems Without RFFB13 = OFF Setting different from default setting: FB15 = ONSystems Without RFSystems 32EB 5476 ENSystems EB 5476 ENSystems 34EB 5476 ENEB 5476 EN SystemsSystem Anl Systems 36EB 5476 ENEB 5476 EN SystemsSystem Anl Systems 38EB 5476 ENEB 5476 EN SystemsSystem Anl Functions of the heating circuit 5 Functions of the heating circuit5.1Weather-compensatedcontrol 5.1.1 Gradient characteristic Functions of the heating circuitFunctions of the heating circuit 5.1.2 4-pointcharacteristicFig. 3 · 4-pointcharacteristic 5.2Fixed set point control 5.3Underfloor heating5.4.1 OT deactivation value in rated operation 5.4Deactivation depending on outdoor temperature5.4.3 Summer mode 5.4.2 OT deactivation value in reduced operationSelection of the operating mode –Automatic mode 5.5Delayed outdoor temperature adaptation5.6Remote operation –Day mode –Night mode5.7Optimization Functions of the heating circuitFunctions of the heating circuit 5.8Flash adaptation5.9Adaptation Functions of the heating circuit 5.10 Pump management5.11 Potentiometer input Functions of the DHW circuit 6.1 DHW heating in the storage tank systemFunctions of the DHW circuit Functions of the DHW circuit Start storage tank chargingFunctions of the DHW circuit Stop storage tank chargingFunctions of the DHW circuit Function6.8Parallel pump operation Anl 2, 3 and 6.6Circulation over the heat exchanger6.7Intermediate heating operation Anl 2, 3 and Functions of the DHW circuit6.9.2 Set-backoperation 6.9Priority circuit Anl 4, 5, 6, 7, 8 and6.9.1 Reverse control Functions of the DHW circuit6.11 Thermal disinfection of the DHW storage tank Functions of the DHW circuit7.1Automatic summer time/winter time changeover 7.4Return flow temperature limitation7 System-widefunctions 7.2Frost protectionSystem-widefunctions –the heating systems have been calibratedSystem-widefunctions 7.5Condensate accumulation control7.6Three-stepcontrol System-widefunctions 7.7On/off control7.9Processing of external demand in RK1 System-widefunctions 7.10.1 Limitation using pulse input7.10 Flow rate/capacity limitation System-widefunctions 7.10.2 Limitation using 0/4 to 20 mA signal7.11 Locking manual levels 7.12 Setting a customized key number System-widefunctionsOperational faults 8 Operational faults8.2Collective error alarm 8.1Sensor failureOperational faults 8.3Temperature monitoring8.4Error status register 9 Communication Communication9.1Controller with RS-232-Cport Communication9.2Controller with serial RS-485interface CommunicationCommunication Station address ST.-NO9.4Meter bus interface Communication9.4.1 Activating the meter bus CommunicationInstallation Appendix Capacity limitationInstallation 10 Installation9.5Memory module Installation Controller housingDimensions in mm Fig. 9 · Installation11 Electrical connection Electrical connectionConnecting the sensors Electrical connectionSystem Anl Electrical connectionSystems Anl 1 to 78EB 5476 ENSystem Anl Electrical connectionSystems Anl 5 to EB 5476 ENElectrical connection 80EB 5476 EN12 Appendix 12.1 Function block list AppendixAppendix FunctionAppendix Setting only possible after entering key numberSetting only possible after entering key number FunctionAppendix Setting only possible after entering key numberSetting only possible after entering key number FunctionSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberAppendix 12.2Parameter list Appendix DisplayAppendix DisplayCan only be set after entering the key number AppendixDisplay Appendix DisplaySystem Anl 9, underfloor heating circuit AppendixDisplay Appendix DisplayDHW heating AppendixDisplay Can only be set after entering the key number AppendixDisplay Appendix DisplaySTOP AppendixEB 5476 EN ST.-NR12.3 Sensor resistance tables Appendix12.4 Technical data AppendixFunction block parameter settings 12.5 Customer dataSystem code number Function block settings AppendixAppendix Function block parametersParameter settings AppendixParameters Appendix Public holidays and vacationsAppendix Frequently used abbreviationsAppendix Key number1732 106EB 5476 ENAppendix EB 5476 ENIndex Index Operating levelIndex Three-stepcontrolEB 5476 EN Fig. 11 · Level structure of TROVIS 00:0000:00 112EB 5476 ENPage EB 5476 EN 2007-09