Lenze DSD - Manual (Page 320)

11 Drive Dimensioning
11.2 Motor selection
320
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Description of the parameters
Parameter Unit Description
Metric Imperial
k
f
Field weakening factor
• With the slider you can adapt the max. speed in ad-
vance.
A
rated
~(n
max
) Previously calculated utilisation of the motor
• The utilisation is calculated from the ratio of the max.
motor speed to its rated speed.
Possible messages:
 Utilisation >100 %, regarding the max. torque ( 445)
A~(M
max
) Utilisation of the motor calculated in advance with refer-
ence to the max. torque in the M-n characteristic.
A
th
,
M
~ (M
rms
) % % Thermal utilisation of the motor with regard to the effec-
tive torque
Relevant topics:
 Continuous rated curves (S1 characteristics) ( 317)
Possible messages:
 Utilisation >100 %, regarding the effective torque
( 455)
Type Type code (excerpt)
• Specification of the motor type.
P
rated
kW kW Rated power of the motor
M
rated
Nm lbfft Rated torque of the motor
f
rated
Hz Hz Rated frequency
I
rated
A A Rated current
n
rated
rpm rpm Rated speed
P
th,av,M
kW kW Medium power loss of the motor
I
max
~ A A Previously determined max. required application current
k
J
~ Previously calculated load matching
• Mismatch of the moment of inertia
Relevant topics:
 Load-matching factor ( 321)
Possible message:
 Max. mismatch is higher than permissible mismatch
( 456)
cos ϕ Power factor
IP Protection type of the motor
Cooling Type of motor cooling
S Naturally ventilated (surface-ventilated)
E Self-ventilated (integral fan)
F Forced ventilated
V
rated
V V Rated voltage
Y/Δ Connection method
S Y-connection
D Δconnection