Bosch Rexroth IndraDrive Mi Project Planning Manual page 50

42/152 Bosch Rexroth AG | Electric Drives
Technical Data of the Components
Description
Maximum current
Torque constant at 20 °C 12)
Constant voltage at 20 °C 13)
Rotor inertia 14)
Thermal time constant
Maximum speed
Insulation class according to
DIN EN 60034–1
Data optional holding brake
Holding torque
Rated voltage
Rated current
Clamping delay
Release delay
and Controls
Symbol Unit Definition
Maximum, temporarily allowed phase current (r.m.s. value) in the
I
A motor winding without damaging effect on the permanent-magnet
max(rms)
circuit of the motor.
Ratio of torque to current in the motor winding (r.m.s. value) at
K
Nm/A
M_N
motor temperature 20 °C. Unit (Nm/A).
R.m.s. value of the induced motor voltage at motor temperature
K
V/min -1
EMK_1000
20 °C and 1000 revolutions per minute. Unit (V/1000 min
J
Inertia of rotor without optional holding brake
kg*m 2
rot
Time of the temperature rise to 63% of the end temperature of the
motor housing with the motor loaded with the allowed S1 contin‐
uous torque. The thermal time constant is determined by the size
of the motors and the method of cooling used.
T
min
th
①: Course of the motor housing temperature over time; Θ
Highest temperature (motor housing); T
Maximum allowed speed of the motor. Limiting factors can have
n
min mechanical (centrifugal forces, bearing stress) or electrical (DC
-1
max
bus voltage) causes.
Insulation class
M
Nm Transmittable holding torque
4
U
V Input voltage of the holding brake
N
I
A Current consumption of the holding brake
N
t
ms ON delay when clamping
1
t
ms Release delay
2
Rexroth IndraDrive Mi | Project Planning Manual
: Thermal time constant
th
-1 ).
:
max