Danfoss VLT HVAC Drive Instruction Manual

Also see for VLT HVAC: Instructions Operating instructions Design guide Instruction Operating instructions

22-24 No-Flow DelayValue:0-600 sec. 10 sec.Function:Set the time. Low Power/Low Speed must staydetected to activate signal for actions. If de-tection disappears before the timer runs out,the timer will be reset.22-26 Dry Pump FunctionValue:Off [0]Warning [1]Alarm [2]Function:Low Power Detection must be enabled (par.22-21) and commissioned (using either par.22-3*,No-Flow Power Tuning, orAuto Set-Up, Par. 22-20) in order to use dry pumpdetection.Warning: Messages in the local control paneldisplay (if mounted) and/or signal via a relayor a digital output.Alarm: The adjustable frequency drive tripsand the motor stays stopped until reset.22-40 Minimum Run TimeValue:0 - 600 s 10 sFunction:Set the desired minimum running time for themotor after a Start command (digital input orbus) before entering Sleep Mode.22-41 Minimum Sleep TimeValue:0 - 600 s 10 sFunction:Set the desired minimum time for remainingin sleep mode. This will override any wake-upconditions.22-42 Wake-Up Speed [RPM]Value:par. 4-11 (Motor Speed Low Limit) - Par.4-13 (Motor Speed High Limit)Function:To be used if par. 0-02,Motor Speed Unit, hasbeen set for RPM (parameter not visible if Hzselected). Only to be used if par. 1-00,Con-figuration Mode, is set for open-loop andspeed reference is applied by an external con-troller.Set the reference speed at which the SleepMode should be cancelled.22-60 Broken Belt FunctionValue:Disabled [0]Warning [1]Trip [2]Function:Selects the action to be performed if the bro-ken belt condition is detected22-61 Broken Belt TorqueValue:0 - 100% 10%Function:Sets the broken belt torque as a percentageof the rated motor torque.6. How to program the adjustable frequencydrive VLT® HVAC Drive Instruction Manual94 MG.11.A4.22 - VLT® is a registered Danfoss trademark6