Lenze EDS4900U-REG - Manual (Page 80)

Commissioning
5-4 48XX/49XXSHB0399
5.2 Input of the motor data
Note
For internal calculations with field-weakening control, the exact input of the
following data is required. See indications on the nameplate of the connected
motor.
( C022, C023 Adapt maximum motor current I
max
( C081 Rated motor power for the power display
( C087 Rated motor speed for the power display
( C083 Rated field current for the field controller
( C084 L/R armature time constant for uncompensated motors
( C088 Rated motor current for ”I
2 ¼t monitoring” (armature circuit)
( C090 Rated motor voltage for armature voltage limitation
Under C084 the controller can be adjusted to different armature time constants
T = L/R. The values can be set between 0 ms and 30 ms.
Common armature time constants: (see motor catalog, section I)
- compensated machines 0 ms to 10 ms
- uncompensated machines 15 ms to 30 ms.
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