NORD Drivesystems BU0200 - Manual (Page 176)

6 Parameterisation
BU 0200 GB-4411 Subject to technical alterations 175
6.1.2 Basic parameters (Frequency inverter)
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P100
Parameter set
(Parameter set)
S
0 ... 3
{ 0 }
Selection of the parameters sets to be parameterised. 4 parameter sets are available. All
parameter set-dependent parameters are identified by P.
The selection of the operating parameter set is performed via a digital input or the Bus control.
Switching can take place during operation (online).
Setting
Digital input
function [8]
Digital input
function [17]
LEDs
SimpleBox
0 = Parameter set 1 Low Low
1
2
1 = Parameter set 2 High Low
2
1
2 = Parameter set 3 Low High
1
2
3 = Parameter set 4 High High
2
1
If enabled via the keyboard (SimpleBox, PotentiometerBox or ParameterBox), the operating
parameter set will match the settings in P100.
P101
Copy parameter set
(Copy parameter set)
S
0 ... 4
{ 0 }
After confirmation with the OK key, a copy of the parameter set selected in P100 >Parameter
set< is written to the parameter set dependent on the value selected here.
0 = Do not copy
1 = Copy actual to P1: copies the active parameter set to parameter set 1
2 = Copy actual to P2: copies the active parameter set to parameter set 2
3 = Copy actual to P3: copies the active parameter set to parameter set 3
4 = Copy actual to P4: copies the active parameter set to parameter set 4
P102
Acceleration time
(Acceleration time)
P
0 ... 320.00 s
{ 2.00 }
Acceleration time (acceleration ramp) is the time corresponding to the linear frequency rise from
0Hz to the set maximum frequency (P105). If an actual setpoint of <100% is being used, the
acceleration time is reduced linearly according to the setpoint set.
The acceleration time can be extended by certain circumstances, e.g. FI overload, setpoint lag,
smoothing, or if the current limit is reached.
Notes on ramp gradient:
Amongst other things, the ramp gradient is governed by the inertia of the rotor.
A ramp with a gradient which is too steep may result in the "inversion" of the motor.
In general, extremely steep ramps (e.g.: 0 - 50Hz in < 0.1 s) should be avoided, as may cause
damage to the frequency inverter.