Nidec Unidrive M600 Series User Manual

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Unidrive M Regen Design Guide 169
Issue Number: 4
Percentage Load (04.020) gives the Active Current (04.002) as a percentage of the Rated Current (05.007). Positive values indicate power flow from
the supply to the Regen drive and negative values indicate power flow from the Regen drive to the supply.
If Current Feedback Filter Disable (04.021) = 0, a 4 ms filter is applied to the current feedback components measured by the drive to be used
in Active Current (04.002) and Reactive Current (04.017). This filter removes ripple components associated with the PWM switching.
If Current Feedback Filter Disable (04.021) = 1, the filter is disabled and the user parameters are based on the current components sampled every
250 µs.
User Current Maximum Scaling (04.024) defines the variable maximum/minimum VM_USER_CURRENT which is applied to Percentage Load
(04.020) and Active Current Reference (04.009). This is useful when routing these parameters to an analog output as it allows the full scale output
value to be defined by the user.
The maximum value (VM_TORQUE_CURRENT_UNIPOLAR [MAX]) varies between drive sizes with default parameters loaded. For some drive
sizes the default value may be reduced below the value given by the parameter range limiting.
See Inductor Thermal Time Constant (04.015).
Final Reactive Current Reference (04.040) gives the reactive current reference that is defined by the user plus any current that is injected by the
island detection system.
04.020 Percentage Load
RO Num ND NC PT FI

VM_USER_CURRENT %

04.021 Current Feedback Filter Disable
RW Bit US

Off (0) or On (1)

Off (0)
04.024 User Current Maximum Scaling
RW Num RA US

0.0 to VM_TORQUE_CURRENT_UNIPOLAR %

175.0 %
04.036 Inductor Protection Accumulator Power-up value
RW Txt US

Power down (0), Zero (1), Real time (2)

Power down (0)
04.040 Final Reactive Current Reference
RO Num ND NC PT FI

±200.0 %


Nidec Unidrive M600 Series Specifications

General

Brand	Nidec
Model	Unidrive M600 Series
Category	DC Drives
Language	English