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2 Parameter Description
3-80 Jog Ramp Time
Range:
Application
[1.00 - 3600.00 s]
dependent*
2
3-84 Initial Ramp Time
Range:
0 s*
[0 – 60 s]
3-85 Check Valve Ramp Time
Range:
0 s*
[0 – 60 s]
60
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Function:
Enter the jog ramp time, i.e. the acceleration/deceleration time between 0 RPM and the rated motor
Motor Nominal Speed
speed (n
) (set in par. 1-25
M,N
quired for the given jog ramp time does not exceed the current limit in par. 4-18
jog ramp time starts upon activation of a jog signal via the control panel, a selected digital input,
or the serial communication port.
tjog
×
nnorm par
. 1 ì 25
par
. 3 ì 80 =
jog speed par
. 3 ì 19
Function:
Enter the initial ramp up time from zero speed to Motor Speed Low Limit, par. 4-11 or 4-12. Sub-
mersible 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 zero speed to Motor Speed Low Limit.
Function:
In order to protect ball check valves in a stop situation, the check valve ramp can be utilized as a
Motor Speed Low Limit [RPM]
slow ramp rate from par. 4-11
[Hz]
, to Check Valve Ramp End Speed, set by the user in par. 3-86 or par. 3-87. When par. 3-85 is
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Programming Guide
). Ensure that the resultant output current re-
Current Limit
s
Motor Speed Low Limit
or par. 4-12
. The
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