Danfoss VLT AQUA Programming Manual page 68

2. Parameter Description
Low
Limit
3-88 Final Ramp Time
2
Range:
0(off)
2.5.6. 3-9* Digital Pot.Meter
The digital potentiometer function allows the user to increase or decrease the actual reference by
adjusting the set-up of the digital inputs using the functions INCREASE, DECREASE or CLEAR. To
activate the function, at least one digital input must be set up to INCREASE or DECREASE.
3-90 Step Size
Range:
0.10%
3-91 Ramp Time
Range:
1.00 s
68
*
Function:
* [0(off) – 60s] Set the Final Ramp Down Time to be used when ramping down
from Check Valve Ramp End Speed and 0 RPM. Final Ramp
Down Time can be used as a quick ramp down time to prevent
damage of pumps with thrust bearings. When Final Ramp Time
is in effect the Final Ramp will be used instead of the existing
ramp down time (P3-42 or P3-52)
Function:
* [0.01 - 200.00%] Enter the increment size required for INCREASE/DECREASE, as
a percentage of the nominal speed set in par. 1-25. If IN-
CREASE/ DECREASE is activated the resulting reference will be
increased / decreased by the amount set in this parameter.
Function:
* [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 potentiometer
function (INCREASE, DECREASE or CLEAR).
If INCREASE / DECREASE is activated for longer than the ramp
delay period specified in par. 3-95 the actual reference will be
ramped up / down according to this ramp time. The ramp time
is defined as the time used to adjust the reference by the step
size specified in par. 3-90
MG.20.O2.02 - VLT
®
VLT
Step Size
.
®
is a registered Danfoss trademark
AQUA Drive Programming Guide