Danfoss ADAP-KOOL Drive - Page 61

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: Function:
10.00 s* [1.00 - 3600.00 s] Enter the ramp-up time, i.e. the acceleration time from 0 RPM to par.1-25 Motor Nominal Speed .
Choose a ramp-up time such that the output current does not exceed the current limit in par.
4-18
Current Limit during ramping. See ramp-down time in par.3-42 Ramp 1 Ramp Down Time .
par .3 − 41 =
tacc × nnorm par .1 − 25
ref rpm
s
3-42 Ramp 1 Ramp Down Time
Range: Function:
20.00 s* [1.00 - 3600.00 s] Enter the ramp-down time, i.e. the deceleration time from par.1-25 Motor Nominal Speed to 0 RPM.
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
Current Limit . See ramp-up time in par.3-41 Ramp 1 Ramp Up Time .
par .3 − 42 =
tdec × nnorm par .1 − 25
ref rpm
s
3.5.4 3-5* Ramp 2
Choosing ramp parameters, see 3-4*.
3-51 Ramp 2 Ramp Up Time
Range: Function:
10.00 s* [1.00 - 3600.00 s] Enter the ramp-up time, i.e. the acceleration time from 0 RPM to par.1-25 Motor Nominal Speed .
Choose a ramp-up time such that the output current does not exceed the current limit in par.
4-18
Current Limit during ramping. See ramp-down time in par.3-52 Ramp 2 Ramp Down Time .
par . 3 − 51 =
tacc × nnorm par . 1 − 25
ref rpm
s
ADAP-KOOL
®
Drive Programming Guide 3 Parameter Description
MG.11.N1.02 - VLT
®
is a registered Danfoss trademark 61
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