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