Nord Drivesystems SK 510P, Руководство с инструкциями по установке

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NORDAC PRO (SK 500P) – Manual with installation instructions
112 BU 0600 en-3221
P219 Auto. flux adjustment S
Setting range 25 ... 100 % / 101
Factory setting { 100 }
Description "
Automatic magn. adjustment
". With this parameter, the magnetic flux of the motor
can be automatically matched to the motor load, so that the energy consumption is
reduced to the amount which is actually required.
P219 is the limiting value, to which
the field in the motor can be reduced.
Reduction of the field is performed with a time constant of 7.5 s. If the load increases,
the field is increased with a time constant of approx. 300 ms. The field is reduced so
that the magnetisation current and the torque current are approximately equal, i.e. the
motor is operated with “optimum efficiency”.
This function is suitable for applications with relatively constant torque (e.g. pump and
fan applications). Its effect therefore replaces a quadratic curve, as it adapts the
voltage to the load.
Note For applications with rapid torque fluctuations (e.g. lifting equipment) this parameter
should be left at the factory setting (100%). Otherwise, rapid load changes could
cause shut-down due to overcurrent or "breakdown".
This parameter does not function with synchronous motors (IE4 motors).
Setting values
Value Meaning
100 Function disabled
101 Automatic Activation of automatic excitation current control. The ISD controller
then operates with a subordinate flux controller, which improves the
slippage calculation, especially at higher loads. The control times
are considerably faster than with normal ISD control
P219 = 100 .