Danfoss vlt AQUA Instruction Manual

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

Preset ref. bit 2 1 0Preset ref. 0 0 0 0Preset ref. 1 0 0 1Preset ref. 2 0 1 0Preset ref. 3 0 1 1Preset ref. 4 1 0 0Preset ref. 5 1 0 1Preset ref. 6 1 1 0Preset ref. 7 1 1 1[19] Freeze ref. Freezes actual reference. The frozen reference is now the point of enable/condition for Speed upand Slow to be used. If Speed up/down is used, the speed change always follows ramp 2 (par. 3-51and 3-52) in the range 0 - par. 3-03Maximum Reference.[20] Freeze output Freezes actual motor frequency (Hz). The frozen motor frequency is now the point of enable/con-dition for Speed up and Slow to be used. If Speed up/down is used, the speed change always followsramp 2 (par. 3-51 and 3-52) in the range 0 - par. 1-23Motor Frequency.NOTE!When Freeze output is active, the adjustable frequency drive cannot be stoppedvia a low ‘start [13]’ signal. Stop the adjustable frequency drive via a terminalprogrammed for Coasting inverse [2] or Coast and reset, inverse [3].[21] Speed up For digital control of the up/down speed is desired (motor potentiometer). Activate this function byselecting either Freeze reference or Freeze output. When Speed up is activated for less than 400msec., the resulting reference will be increased by 0.1%. If Speed up is activated for more than 400msec., the resulting reference will ramp according to Ramp 1 in par. 3-41.[22] Slow Same as Speed up [21].[23] Set-up select bit 0 Selects one of the four set-ups. Set par. 0-10Active Set-up to Multi Set-up.[24] Set-up select bit 1 Same as Set-up select bit 0 [23].(Default Digital input 32)[32] Pulse input Select Pulse input when using a pulse sequence as either reference or feedback. Scaling is done inpar. group 5-5*.[34] Ramp bit 0 Select which ramp to use. Logic “0” will select ramp 1 while logic “1” will select ramp 2.[36] Line failure inverse Activates par. 14-10Line Failure. Line failure inverse is active in the Logic “0” situation.[52] Run Permissive The input terminal for which run permissive has been programmed must be logic “1” before a startcommand can be accepted. Run permissive has a logic ‘AND’ function related to the terminal whichis programmed forSTART [8],Jog [14] orFreeze Output [20], which means that in order to startrunning the motor, both conditions must be fulfilled. If run permissive is programmed on multipleterminals, it needs only be logic ‘1’ on one of the terminals for the function to be carried out. Thedigital output signal for Run Request (Start [8],Jog [14] orFreeze output [20]) programmed in par.5-3* Digital outputs, or par. 5-4* Relays, will not be affected by run permissive.[53] Hand start A signal applied will put the adjustable frequency drive into hand mode as if the buttonHand Onon the LCP has been pressed; a normal stop command will be overridden. If disconnecting the signal,the motor will stop. To make any other start commands valid, another digital input must be assigntoAuto Start and a signal applied to this. TheHand On andAuto On buttons on the LCP have noeffect. TheOff button on the LCP will overrideHand Start andAuto Start. Press either theHandOn orAuto On button to reactivateHand Start andAuto Start. If there is no signal on eitherHandStart orAuto Start, the motor will stop regardless of any normal start command applied. If a signalapplied to bothHand Start andAuto Start, the function will beAuto Start. If you press theOff buttonon the LCP, the motor will stop regardless of the signals onHand Start andAuto Start.[54] Auto-start A signal applied will put the adjustable frequency drive into auto mode as if the LCP buttonAutoOn has been pressed. See alsoHand Start [53][55] DigiPot Increase Uses the input as an INCREASE signal to the digital potentiometer function described in parametergroup 3-9*.8 How to program the adjustable frequencydriveVLT® AQUA DriveInstruction Manual8-22 MG.20.M5.22 - VLT® is a registered Danfoss trademark8