Danfoss VLT AQUA Programming Manual page 66

2. Parameter Description
3-42 Ramp 1 Ramp Down Time
Range:
*
3 s
2
2.5.4. 3-5* Ramp 2
Choosing ramp parameters, see 3-4*.
3-51 Ramp 2 Ramp up Time
Range:
*
3 s
3-52 Ramp 2 Ramp down Time
Range:
*
3 s
2.5.5. 3-8* Other Ramps
Configure parameters for special ramps e.g. Jog or Quick Stop.
3-80 Jog Ramp Time
Range:
20 s
66
Function:
[1 - 3600 s] Enter the ramp-down time, i.e. the deceleration time from the
rated motor speed n
down time such that no over-voltage arises in the inverter due
to regenerative operation of the motor, and such that the gen-
erated current does not exceed the current limit set in par. 4-18.
See ramp-up time in par. 3-41.
par
Function:
[1 - 3600 s] Enter the ramp-up time, i.e. the acceleration time from 0 RPM
to the rated motor speed (n
time such that the output current does not exceed the current
limit in par. 4-18 during ramping. See ramp-down time in par.
3-52.
par
Function:
[1 - 3600 s.] Enter the ramp-down time, i.e. the deceleration time from the
rated motor speed (n
down time such that no over-voltage arises in the inverter due
to regenerative operation of the motor, and such that the gen-
erated current does not exceed the current limit set in par. 4-18.
See ramp-up time in par. 3-51.
par
Function:
* [1 - 3600 s] Enter the jog ramp time, i.e. the acceleration/deceleration time
between 0 RPM and the rated motor speed (n
1-25
current required for the given jog ramp time does not exceed
the current limit in par. 4-18. The jog ramp time starts upon
MG.20.O2.02 - VLT
VLT
(par. 1-25) to 0 RPM. Choose a ramp-
M,N
t n par
×
dec norm
.3 − 42 =
Δ ref rpm
) (par. 1-25). Choose a ramp-up
M,N
tacc nnorm par
×
. 3 − 51 =
Δ ref rpm
) (par. 1-25) to 0 RPM. Choose a ramp-
M,N
tdec × nnorm par
.3 − 52 =
ref rpm
Δ
Motor Nominal Speed
). Ensure that the resultant output
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AQUA Drive Programming Guide
.1 − 25
s
. 1 − 25
s
. 1 − 25
s
) (set in par.
M,N