REXROTH IndraDyn A Series, Руководство по планированию проекта, Страница: 28 / 220

4-2
Technical Data Rexroth IndraDyn A
4.2 Operating Behavior
The following section describes the parameters, characteristic curves and
the explanations of the motor data found in the technical data sheets of
the IndraDyn A series.
Parameters
Available torque at the rated speed in operating mode S1 (continuous
operation). Unit: Newton meters (Nm).
Typical working speed defined by the manufacturer. Depending on the
particular application, other working speeds are possible (see speed-
torque characteristic curve).
Power output of the motor at the rated speed and capacity with rated
torque, specified in kilowatts (kW).
Phase current of the motor at the rated speed and load with rated torque,
specified as root-mean-square value in ampere (A).
Ratio of increase of torque to the torque-forming current of the motor.
Unit: Nm/A. Valid up to the rated current I
N
.
The moment of inertia of the rotor without bearings and encoder. Unit:
kgm².
Mass of the motor in standard version, without holding brake, specified in
kilograms (kg).
Maximum allowed speed of the motor in (rpm). Normally restricted by
mechanical factors like centrifugal force or bearing stress.
The time it takes for the temperature to rise to 63% of the final
temperature of the motor under load with rated torque in S1-operation and
surface ventilation by directly-connected blower units.
0%
63%
100%
t [min]
Q
max
T
th
1
~ 5
x
T
th
Q
MAD_Definition3.EPS
(1): Path of the motor temperature over time
T
th
: Thermal time constant
Fig. 4-3: Thermal time constant
Duration of the cycle in S6 operating mode until the steady-state
temperature is reached and the maximum temperature equals the final
temperature in S1 operation (see Fig. Fig. 4-1).
Quantity of pole pairs of the motor.
Rated Torque M
nenn
Rated Speed n
nenn
Rated Power P
nenn
Rated Current I
nenn
Torque Constant at Rated Point
K
M_nenn
Rotor Moment of Inertia J
rot
Mass m
Maximum Speed n
max
Thermal Time Constant T
th
Duty Cycle Time T
C
Number of Pole Pairs p