Nord Drivesystems BU 0500, Руководство пользователя

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SK 500E – Users Manual for Frequency Inverters
102 BU 0500 EN-3021
P209
No load current
(No load current)
S P
0.0 ... 1000.0 A
{ see information }
This value is always calculated automatically from the motor data if there is a change in the
parameter >cos
ϕ
< P206 and the parameter >Nominal current< P203.
NOTE: If the value is to be entered directly, then it must be set as the last motor data. This is
the only way to ensure that the value will not be overwritten.
Information
Default setting
The default setting is dependent upon the FI nominal power and the setting in P200.
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P210
Static boost
(Static boost)
S P
0 ... 400 %
{ 100 }
The static boost affects the current that generates the magnetic field. This is equivalent to the no
load current of the respective motor and is therefore load-independent. The no load current is
calculated using the motor data. The factory setting of 100% is sufficient for normal applications.
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P211
Dynamic boost
(Dynamic boost)
S P
0 ... 150 %
{ 100 }
The dynamic boost affects the torque generating current and is therefore a load-dependent
parameter. The factory 100% setting is also sufficient for typical applications.
Too high a value can lead to overcurrent in the FI. Under load therefore, the output voltage will be
raised too sharply. Too low a value will lead to insufficient torque.
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P212
Slip compensation
(Slip compensation)
S P
0 ... 150%
{ 100 }
The slip compensation increases the output frequency, dependent on load, to keep the
asynchronous motor speed approximately constant.
The factory setting of 100% is optimal when using DC asynchronous motors and correct motor data
has been set.
If several motors (different loads or outputs) are operated with one FI, the slip compensation P212
must be set to 0%. This excludes any negative influences. With PMSM motors, the parameter must
be left at the factory setting.
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P213
ISD ctrl. loop gain
(Amplification of ISD control)
S P
25 ... 400 %
{ 100 }
This parameter influences the control dynamics of the FI current vector control (ISD control). Higher
settings make the controller faster, lower settings slower.
Dependent on application type, this parameter can be altered, e.g. to avoid unstable operation.
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P214
Torque precontrol
(Torque precontrol)
S P
-200 ... 200 %
{ 0 }
This function allows a value for the expected torque requirement to be set in the controller. This
function can be used in lifting applications for a better load transfer during start-up.
NOTE: Motor torques (with rotation field right) are entered with a positive sign, generator
torques are entered with a negative sign. The reverse applies for the counter
clockwise rotation.
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