Danfoss VLT HVAC Series Programming Manual page 61

VLT ® HVAC Drive Programming Guide
3-19 Jog Speed [RPM]
Range:
300. RPM* [0 - par. 4-13 RPM]
3.5.3 3-4* Ramp 1
Configure the ramp parameter, ramping times, for each of the two ramps (par. 3-4* and par. 3-5*).
3-41 Ramp 1 Ramp-up Time
Range:
10.00 s* [1.00 - 3600.00 s]
3-42 Ramp 1 Ramp-down Time
Range:
20.00 s* [1.00 - 3600.00 s]
Function:
Enter a value for the jog speed n
JOG
runs at this speed when the jog function is activated. The maximum limit is defined in par. .
See also par.3-80 Jog Ramp Time
Function:
Enter the ramp-up time, i.e., the acceleration time from 0 RPM to par.1-25
Choose a ramp-up time such that the output current does not exceed the current limit in par.
Current Limit
4-18 during ramping. See ramp-down time in par.3-42
tacc nnorm par
×
par
.3 − 41 =
ref rpm
Function:
Enter the ramp-down time, i.e., the deceleration time from par.1-25
Choose a ramp-down time such that no overvoltage arises in the inverter due to regenerative op-
eration of the motor, and such that the generated current does not exceed the current limit set in
Current Limit
par.4-18 . See ramp-up time in par.3-41
tdec nnorm par
×
par
.3 − 42 =
ref rpm
MG.11.C6.22 - VLT ® is a registered Danfoss trademark
, which is a fixed output speed. The adjustable frequency drive
.
Ramp 1 Ramp-down Time
.1 − 25
s
Motor Nominal Speed
Ramp 1 Ramp-up Time
.1 − 25
s
3 Parameter Description
3
Motor Nominal Speed .
.
to 0 RPM.
.
3-37