Danfoss AK-LM 330 Design Manual

Also see for AK-LM 330: User guide

Contents

68 RS8FR302 © Danfoss 2015-08 AK-LM 330Thermostats (10 units)The function may freely be used for:• Temperature registration• Temperature monitoring with alarm function• Temperature control with relay functionAn example could be thermostat control of the fan in the com-pressor compartment.The thermostat can be used as one of the sensors Saux1, Saux2,Saux3, .. etc.Cutin and cutout limits are set for the thermostat. Couplingof the thermostat’s output will be based on the actual sensortemperature. Alarm limits can be set for low and high temperature,respectively, including separate alarm delays.The individual thermostat function can be adapted to the relevantapplication as it is possible to give the thermostat a name and toindicate alarm texts.Each thermostat function can also detect two digital signals whichcan be used to change alarm signals.One signal that will change the alarm delay so that a change ismade to the long alarm delay. This signal is primarily used with adefrosting so that no alarm is triggered during a defrosting.A signal that stops the alarm. This signal is primarily used duringstoppage of a refrigeration appliance, e.g. during cleaning.Each thermostat has the following available functions:• Name• Sensor signal• Display of the current reading• Selection of relay function• Setting the cut-out value for relays• Setting the cut-in value for relays• Selection of the input signal that changes to Alarm Delay 2• Selection of the input signal that stops alarms• High alarm limit• Delay time for 'high alarm'• Delay time 2 for 'high alarm'• Alarm text for 'high alarm'• Low alarm limit• Delay time for 'low alarm'• Alarm text for 'low alarm'Pressostats (5 units)The function may freely be used for:• Pressure registration• Pressure monitoring with alarm funktion• Pressure control with relay functionAn example could be pressure control of a vessel:The pressostat can use one of the pressure transmitters Paux1,Paux2, Paux3... etc.Set cut-in and cut-out limits for the pressostat. The pressostatoutput is connected based on the current pressure.Alarm limits can be set for low and high pressure including sepa-rate alarm delays.The individual pressostat function can be adapted to the currentuse as it is possible to name the pressostat control and customisealarm texts.Each pressostat has the following available functions:• Name• Pressure signal• Display of the current reading• Selection of relay function• Setting the cut-out value for relays• Setting the cut-in value for relays• High alarm limit• Delay time for 'high alarm'• Alarm text for 'high alarm'• Low alarm limit• Delay time for 'low alarm'• Alarm text for 'low alarm'Monitoring functions