NORD Drivesystems BU0200 - Manual (Page 186)

6 Parameterisation
BU 0200 GB-4411 Subject to technical alterations 185
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P216
Time boost prectrl.
(Time boost precontrol)
S P
0.0 ... 10.0 s
{ 0.0 }
This parameter is used for 3 functionalities
Time limit for the boost lead: Effective time for the increased starting current.
Only with linear characteristic curve (P211 = 0% and P212 = 0%).
Time limit for suppression of pulse switch-off (P537): enables start-up under heavy load.
Time limit for suppression of switch-off on error in parameter (P401), setting { 05 } „0 - 10V
with switch- off on error 2“
P217
Oscillation damping
(Oscillation damping)
S P
0 ... 400 %
{ 10 }
With the oscillation damping, idling current harmonics can be damped. Parameter 217 is a
measure of the damping power.
For oscillation damping, the oscillation component is filtered out of the torque current by means
of a high pass filter. This is amplified by P217, inverted and switched to the output frequency.
The limit for the switched value is also proportional to P217. The time constant for the high pass
filter depends on P213. For higher values of P213 the time constant is lower.
With a set value of 10% for P217, a maximum of ± 0.045Hz are switched in. At 400% in P217,
this corresponds to ± 1.8Hz
The function is not active in “Servo mode, P300”.
P218
Modulation depth
(Modulation depth)
S
50 ... 110 %
{ 100 }
This setting influences the maximum possible output voltage of the FI in relation to the mains
voltage. Values <100% reduce the voltage to values below that of the mains voltage if this is
required for motors. Values >100% increase the output voltage to the motor increased the
harmonics in the current, which may cause oscillation in some motors.
Normally, 100% should be set.