ABB i-bus EIB Product Manual

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ABB i-bus EIB Product Manual Manual pdf 46 page image

ABB i-bus® EIB / KNX Project design and programming4.4.3 Parameter window:“Monitoring”This parameter window is visible if the value “yes” has been entered in theparameter Enable monitoring of the controller in the parameter window “x:Function”.Parameter: “Cyclic monitoring time of room thermostat”The telegrams of the room thermostat are transferred to the electronicactuator at specific intervals. If one or more of the subsequent telegrams isomitted, this can indicate a communications fault or a defect in the roomthermostat. If there are no telegrams to the objects “Switch” or “Control value(PWM)” during the period defined in this parameter, the actuator switches tofault mode and triggers a safety position. The fault mode is ended as soonas a telegram is received.Note: If this parameter window is visible, the room thermostat mustsend the control value cyclically, otherwise no function ispossible. The monitoring time should be greater than the cyclictransmission time (recommended: Factor 2).Parameter:“Position of the valve drive during fault of room thermostat”The safety position which is triggered by the actuator in fault mode is definedhere. The switch cycle time t CYC of the control is defined in the parameter“PWM cycle time for continuous control”.Parameter: “Enable object ‘Telegr. fault’”The object “Telegr. fault thermostat” which can display the failure of theroom thermostat can be enabled in this parameter.© 2004 ABB STOTZ-KONTAKT GmbH 46