Danfoss VLT FC 100 Series Programming Manual page 57

®
VLT HVAC Drive Programming Guide
3-41 Ramp 1 Ramp up Time
Range:
*
10 s [1 - 3600 s]
3-42 Ramp 1 Ramp Down Time
Range:
*
20 s [1 - 3600 s]
3.5.4. 3-5* Ramp 2
Choosing ramp parameters, see 3-4*.
3-51 Ramp 2 Ramp up Time
Range:
*
3 s [1 - 3600 s]
3-52 Ramp 2 Ramp down Time
Range:
*
3 s [1 - 3600 s.]
3.5.5. 3-8* Other Ramps
Configure parameters for special ramps e.g. Jog or Quick Stop.
3-80 Jog Ramp Time
Range:
*
20 s [1 - 3600 s]
Function:
Enter the ramp-up time, i.e. the acceleration time from 0 RPM to the rated motor speed n
a ramp-up time such that the output current does not exceed the current limit in par. 4-18 during ramping. See
ramp-down time in par. 3-42.
tacc × nnorm par
par
.3 − 41 =
ref rpm
Δ
See drawing above!
Function:
Enter the ramp-down time, i.e. the deceleration time from the rated motor speed n
Choose a ramp-down time such that no over-voltage arises in the inverter due to regenerative operation of the
motor, and such that the generated current does not exceed the current limit set in par. 4-18. See ramp-up time
in par. 3-41.
tdec nnorm par
×
par .3 − 42 =
ref rpm
Δ
Function:
Enter the ramp-up time, i.e. the acceleration time from 0 RPM to the rated motor speed (n
a ramp-up 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.
tacc nnorm par
×
par . 3 − 51 =
ref rpm
Δ
Function:
Enter the ramp-down time, i.e. the deceleration time from the rated motor speed (n
Choose a ramp-down time such that no over-voltage arises in the inverter due to regenerative operation of the
motor, and such that the generated current does not exceed the current limit set in par. 4-18. See ramp-up time
in par. 3-51.
tdec nnorm par
×
par
.3 − 52 =
ref rpm
Δ
Function:
Enter the jog ramp time, i.e. the acceleration/deceleration time between 0 RPM and the rated motor speed
Motor Nominal Speed
(n ) (set in par. 1-25
M,N
jog ramp time does not exceed the current limit in par. 4-18. The jog ramp time starts upon activation of a jog
signal via the control panel, a selected digital input, or the serial communication port.
t jog nnorm par
×
par
. 3 − 80 =
jog speed par
Δ
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
3. Parameter Description
.1 − 25
s
.1 − 25
s
. 1 − 25
s
. 1 − 25
s
). Ensure that the resultant output current required for the given
. 1 − 25
s
. 3 − 19
(par. 1-25). Choose
M,N
(par. 1-25) to 0 RPM.
M,N
) (par. 1-25). Choose
M,N
) (par. 1-25) to 0 RPM.
M,N
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