Danfoss VLT HVAC Basic Drive FC 100 Series Programming Manual

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Danfoss VLT HVAC Basic Drive FC 100 Series Programming Manual Manual pdf 48 page image

3.6 Main Menu - Digital In/Out - Group 53.6.1 5-0* Digital I/O ModeParameters for configuring the input and output usingNPN and PNP.These parameters cannot be adjusted while the motor isrunning.5-00 Digital Input ModeOption: Function:Set NPN or PNP mode for digital inputs 18, 19 and 27.Digital Input Mode[0] PNP Action on positive directional pulses (0). PNP systemsare pulled down to GND.[1] NPN Action on negative directional pulses (1). NPN systemsare pulled up to +24 V, internally in the adjustablefrequency drive.5-03 Digital Input 29 ModeOption: Function:[0] PNP[1] NPN3.6.2 5-1* Digital InputsParameters for configuring the input functions for theinput terminals.The digital inputs are used for selecting various functionsin the adjustable frequency drive. All digital inputs can beset to the following functions:Digital inputfunctionDescription[0] No operation No reaction to signals transmitted toterminal.[1] Reset Resets Adjustable frequency drive after aTRIP/ALARM. Not all alarms can be reset.[2] Coast inverse Leaves motor in free mode. Logic ‘0’ =>coasting stop.(Default Digital input 27): Coasting stop,inverted input (NC).[3] Coast and resetinverseReset and coasting stop inverted input(NC). Leaves motor in free mode andresets the Adjustable frequency drive.Logic ‘0’ ⇒ coasting stop and reset.Digital inputfunctionDescription[4] Quick StopinverseInverted input (NC). Generates a stop inaccordance with the quick stop ramp timeset in 3-81 Quick Stop Ramp Time. Whenthe motor stops, the shaft is in free mode.[5] DC brake inverse Inverted input for DC braking (NC). Stopsmotor by energizing it with DC current fora certain time period, see 2-01 DC BrakeCurrent. Function is only active whenvalue in 2-02 DC Braking Time is differentfrom 0. This selection is not possiblewhen 1-10 Motor Construction is set to [1]PM non-salient SPM.[6] Stop inverse Stop inverted function. Generates stopfunction when selected terminal goesfrom logical level “1” to “0” (not latched).The stop is performed according to theselected ramp time.[7] External Interlock Same function as Coasting stop, inverse,but External Interlock generates the alarmmessage ’external fault’ on the displaywhen the terminal which is programmedfor Coast Inverse is logic ‘0’. The alarmmessage will also be active via digitaloutputs and relay outputs, if programmedfor External Interlock. The alarm can bereset using a digital input or the [Reset]key if the cause for the External Interlockhas been removed.*[8] Start Select start for a start/stop command.Logic ‘1’ = start, logic ‘0’ = stop. (DefaultDigital input 18)[9] Latched start Motor starts, if a pulse is applied for min.2 ms. Motor stops when Stop inverse isactivated.[10] Reversing Change the direction of the motor shaftrotation. Reversing signal only changesthe direction of rotation; it does notactivate the start function. Select [2] Bothdirections in 4-10 Motor Speed Direction. 0= normal, 1 = reversing.[11] Start reversing Use for start/stop and for reversing at thesame time. Signals on [8] start are notallowed at the same time. 0 = stop, 1 =start reversing.[14] Jog Used for activating jog speed. See3-11 Jog Speed [Hz]. (Default Digital input29)[16] Preset ref bit 0 Enables a choice between one of theeight preset references according toTable 3.5.Parameters VLT® HVAC Basic Drive Programming Guide3-20 MG18B222 - VLT® is a registered Danfoss trademark33