Danfoss VLT AQUA Drive FC 200, Instruction Manual

Page: 77 / 155

3-85 Check Valve Ramp Time
Range: Function:
0.00 s
*
[0.00–
60.00 s] In order to protect ball check valves in a stop
situation, the check valve ramp can be utilized
as a slow ramp rate from
4-11 Motor Speed
Low Limit [RPM] or 4-12 Motor Speed Low Limit
[Hz] , to Check Valve Ramp End Speed, set by
the user in or . When is different from 0
seconds, the Check Valve Ramp Time is
effectuated and will be used to ramp down
the speed from Motor Speed Low Limit to the
Check Valve End Speed in or ..
130BA961.10
Speed
Motor Speed
Normal
Check valve
Motor Speed
High
Low
Time
Ramp
End Speed
3-86 Check Valve Ramp End Speed [RPM]
Range: Function:
3-87 Check Valve Ramp End Speed [Hz]
Range: Function:
3-88 Final Ramp Time
Range: Function:
0.00
s
*
[0.00–
60.00 s] Enter the Final Ramp Time to be used when
ramping down from Motor Speed Low Limit,
4-11 Motor Speed Low Limit [RPM] or
4-12 Motor Speed Low Limit [Hz] , to zero speed.
Submersible deep well pumps can be
damaged by running below minimum speed.
A fast ramp time below minimum pump
speed is recommended. This parameter may
be applied as a fast ramp rate from Motor
Speed Low Limit to zero speed.
130BA962.10
Motor Speed
Motor Speed
High
Low
Normal
Ramps
Initial
Ramp
Final
Ramp
Time
Speed
How to program the adjustab... VLT AQUA 12-Pulse High Power Instruction Manual
6-14 MG.20.Y1.22 - VLT
®
is a registered Danfoss trademark
6 6