Danfoss VLT AQUA Programming Manual

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

Contents

LowLimit*3-88 Final Ramp TimeRange: Function:0(off) * [0(off) – 60s] Set the Final Ramp Down Time to be used when ramping downfrom Check Valve Ramp End Speed and 0 RPM. Final RampDown Time can be used as a quick ramp down time to preventdamage of pumps with thrust bearings. When Final Ramp Timeis in effect the Final Ramp will be used instead of the existingramp down time (P3-42 or P3-52)2.5.6. 3-9* Digital Pot.MeterThe digital potentiometer function allows the user to increase or decrease the actual reference byadjusting the set-up of the digital inputs using the functions INCREASE, DECREASE or CLEAR. Toactivate the function, at least one digital input must be set up to INCREASE or DECREASE.3-90 Step SizeRange: Function:0.10% * [0.01 - 200.00%] Enter the increment size required for INCREASE/DECREASE, asa percentage of the nominal speed set in par. 1-25. If IN-CREASE/ DECREASE is activated the resulting reference will beincreased / decreased by the amount set in this parameter.3-91 Ramp TimeRange: Function:1.00 s* [0.00 - 3600.00 s] Enter the ramp time, i.e. the time for adjustment of the refer-ence from 0% to 100% of the specified digital potentiometerfunction (INCREASE, DECREASE or CLEAR).If INCREASE / DECREASE is activated for longer than the rampdelay period specified in par. 3-95 the actual reference will beramped up / down according to this ramp time. The ramp timeis defined as the time used to adjust the reference by the stepsize specified in par. 3-90Step Size.2. Parameter Description VLT ® AQUA Drive Programming Guide68 MG.20.O2.02 - VLT ® is a registered Danfoss trademark2