Lenze DSD - Manual (Page 30)

3 User interface
3.1 Control and function elements
30
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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3.1.3.3 "Motor" image
3.1.3.4 "Inverter" image
Symbol Description
P
N
Rated power of the motor
n
rated
Rated speed of the motor
M
rated
Rated torque of the motor
I
N
Rated motor current
A
th,max
Max. thermal utilisation of the motor
A(M
max
) Utilisation of the motor relative to the torque
• Ratio of the max. required torque to the max. possible torque of the motor during operation
on the selected inverter and with the selected control mode:
M
max,req
/ M
max,M
A(M
rms
) Utilisation of the motor with reference to the effective torque and taking into account the ther-
mal time constant
A(M
dyn,M
) Dynamic utilisation of the motor
• Ratio of the max. occurring motor torque to the rated motor torque:
(M
max
/ M
N
)
k
f
Field weakening factor of the motor
k
J,max
Load-matching factor of the motor
Symbol Description
A(I
max
/ I
rated,M
) Utilisation of the inverter
• Ratio of the max. output current of the inverter (I
max
) to the rated motor current (I
N,M
).
• If the inverter is highly overdimensioned with regard to the motor, the control quality de-
creases.
A(I
imp,max
) Thermal utilisation of the inverter relative to the power pulse current for 1 s or 60 s
A(I
red,max
) Utilisation of the inverter relative to the reduced max. output current
A
th,Brm
Thermal utilisation of the internal brake transistor
A
Brm
(ED) Utilisation of the internal brake transistor, relative to the i×t monitoring
A
max
Max. utilisation of the brake resistor
A
th
Thermal utilisation of the brake resistor
A
th,max
Max. thermal utilisation of the inverter relative to the reduced output current
I
max
Max. output current of the inverter selected
I
N
Rated current of the inverter selected
P
N
Rated motor power of the inverter selected
Type Type of brake resistor