Danfoss vlt AQUA Instruction Manual

Also see for vlt aqua: Instructions Design guide Operating instructions Design guide Operating instructions

Functions dedicated to only one digital input are stated in the associated parameter.All digital inputs can be programmed to these functions:[0] No operation No reaction to signals transmitted to terminal.[1] Reset Resets adjustable frequency drive after a TRIP/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 reset inverse Reset and coasting stop Inverted input (NC).Leaves motor in free mode and resets the adjustable frequency drive. Logic ‘0’ => coasting stopand reset.[5] DC brake inverse Inverted input for DC braking (NC).Stops motor by energizing it with a DC current for a certain time period. See par. 2-01 to par. 2-03.The function is only active when the value in par. 2-02 is different from 0. Logic "0" => DC braking.[6] Stop inverse Stop Inverted function. Generates a stop function when the selected terminal goes from logical level‘1’ to ‘0’. The stop is performed according to the selected ramp time (par. 3-42, par. 3-52, par. 3-62,par. 3-72).NOTE!When the adjustable frequency drive is at the torque limit and has received astop command, it may not stop by itself. To ensure that the adjustable frequencydrive stops, configure a digital output toTorque limit & stop [27] and connectthis digital output to a digital input that is configured as coast.[7] External Interlock Same function as Coasting stop, inverse, but External Interlock generates the alarm message ’ex-ternal fault’ on the display when the terminal which is programmed for Coast Inverse is logic ‘0’.The alarm message will also be active via digital outputs and relay outputs if programmed for ex-ternal interlock. The alarm can be reset using a digital input or the [RESET] key if the cause for theexternal interlock has been removed. A delay can be programmed in par. 22-00, External InterlockTime. After applying a signal to the input, the reaction described above will be delayed with thetime set in par. 22-00.[8] Start Select start for a start/stop command. Logic ‘1’ = start, logic ‘0’ = stop.(Default Digital input 18)[9] Latched start The motor starts if a pulse is applied for at least 2 ms. The motor stops when stop inverse is activated[10] Reversing Changes direction of motor shaft rotation. Select Logic ‘1’ to reverse. The reverse signal onlychanges the direction of rotation. It does not activate the start function. Select both directions inpar. 4-10Motor Speed Direction.(Default Digital input 19).[11] Start reversing Used for start/stop and for reversing on the same wire. Signals on start are not allowed at the sametime.[14] Jog Used for activating jog speed. See par. 3-11.(Default Digital input 29)[15] Preset reference on Used for shifting between external reference and preset reference. It is assumed thatExternal/preset [1] has been selected in par. 3-04. Logic '0' = external reference active; logic '1' = one ofthe eight preset references is active.[16] Preset ref bit 0 Enables a choice between one of the eight preset references according to the table below.[17] Preset ref bit 1 Enables a choice between one of the eight preset references according to the table below.[18] Preset ref bit 2 Enables a choice between one of the eight preset references according to the table below.VLT® AQUA DriveInstruction Manual8 How to program the adjustable frequencydriveMG.20.M5.22 - VLT® is a registered Danfoss trademark 8-218