Technical data
4-2 Technical Data Rexroth IndraDyn H
DOK-MOTOR*-MBS-H******-PR02-EN-P
Parameters
Available torque that can be output at the rated speed in operating mode
S1 (continuous operation). Unit Newton meter (Nm).
Typical working speed as defined by the manufacturer. Depending on
the particular application, other working speeds are possible (see speed-
torque characteristic curve).
Mechanical power output of the motor while running at rated speed and
rated torque. The value is specified in kilowatts (kW).
Phase current of the motor while running at rated speed and rated
torque. The value is specified as root-mean-square value in amps (A).
This is the maximum torque available using maximum current I
max .
The
achievable maximum torque depends on the drive controller used.
This is the maximum current (root-mean-square) of the motor at M
max
.
The value is specified in amps (A).
The moment of inertia of the rotor without bearings and encoder. Unit:
kgm².
This is the relation of torque increase to the motor phase-current (RMS).
The value is specified in Nm/A. Valid up to the rated current I
nenn
.
Root-mean-square of the induced motor voltage with respect to the
motor speed. The value is specified in V/1000 rpm.
Winding resistance measured between two phases in ohms (Ω).
The mass of stator and rotor, without bearing and encoder, stated in
kilogram (kg).
Maximum allowable speed of the motor in n
max
. Value specified in RPM.
Normally restricted by mechanical factors like centrifugal force or bearing
stress.
Number of pole pairs of the motor.
The time it takes for the motor temperature to rise to 63% of the final
temperature with the stators loaded with rated torque in S1-operation
and liquid cooling.
0%
63%
100%
t [min]
Q
max
T
th
1
~ 5 x T
th
Q
MBS_Definitions2.EPS
(1): Curve of the stator temperature over time
T
th
: Thermal time constant
Fig. 4-3: Thermal time constant
Rated torque
Rated speed
Rated power
Rated current
Maximum torque
Maximum current
Rotor moment of inertia J
rot
Torque constant at 20 C K
M_nenn
Voltage constant at 20°C
K
EMK_1000
Winding resistance at 20°C R
12
Stator/Rotor mass m
stat
/ m
rot
Maximum speed n
max
Number of pole pairs p
Thermal time constant T
th