Emotron CDU/CDX 48-008 [44/82] Explanations of parameters

Emotron CDU/CDX 48-008 [44/82] Explanations of parameters
EMOTRON DSV 5445/5444
Page 44
Emotron 21.04.09
8.2 Explanations of parameters
8.2.1 F0 Rotor flux
Rotor flux "F0" is responsible for the no-load current (field) of an asynchronous motor. We recommend the
use of the values in the tables and/or the project related settings. If the flux is too large, the motor heats up
unnecessarily, while if the flux is too small, the starting torque is reduced. The flux serves the coding of the
motor in the case of synchronous motors (do not change the setting under any circumstances). One sets the
maximum necessary current is set with "F0" in "encoder-free" mode (the values are then normally 4-digit in
this case).
8.2.2 t rotor time constant
The rotor time constant "t" is responsible for the motor torque (rotor). It is dependent upon the motor cos ϕ. If
cos ϕ is poor, then "t" is also small. If the value of "t" is too large, torque losses occur. Values that are too
small lead to oscillations in the acceleration range. Use the values in the table and/or any preset project
values. The exact value for the motor-specific parameter "t" can also be obtained from the motor
manufacturer. Attention: The double table value must be entered for asynchronous-gearless ("New motor"
line), e.g. "Klose" 18.5 kW has t=600 at F0-500 !
8.2.3 Adjustment of parameters "F0" and "t" dependent upon the installed motor
DSV 5445 - x / 400 010 16 20 30
Motor power [kW]
3.0 4.0 5.0 4.0 5.5 6.5 5.5 7.5 8.5 9.0 11.0 15.0
Rotor flux "F0"
400 600 750 400 500 600 350 450 700 450 550 650
Rotor time constant "t"
New motor
200 225 230 225 230 245 240 250 260 270 275 280
Old motor
50 75 80 75 85 95 90 100 110 120 125 130
DSV 5445 - x / 400 40 40-70 60 80
Motor power [kW]
15.5 18.5 21.2 18.5 22.0 25.0 22.0 27.0 29.5 30.0 37.0 45.0
Rotor flux "F0"
400 500 600 400 500 600 400 500 600 425 475 550
Rotor time constant "t"
New motor
290 300 310 300 310 320 310 325 330 340 350 360
Old motor
140 150 160 150 170 175 170 175 180 190 200 220
DSV 5445 - x / 400 120 150 200 250
Motor power [kW]
45.0 55.0 65.0 75.0 90.0 110 132
Rotor flux "F0"
400 450 500 400 450 500 400
Rotor time constant "t"
New motor
375 400 425 450 450 500 550
Old motor
230 250 275 275 275 300 325
The above-named values in the tables for "F0" and "t" apply only to asynchronous motors
with gearbox (TUDYxxN or TUDXxxN-firmware). Value "t" is doubled for TUDZxxN-firmware
using for example ’asynchronous-gearless’. Note: TUD-version is written on DSV-typeplate.
All gearless-asynchronous are preset; the values can deviate from the above mentioned
table. Only the values set in the factory are valid for synchronous motors; they may not be
altered since this removes the winch type code in the converter. See details also chapter
OPERATION OF SYNCHRONOUS-GEARLESS MOTORS…

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