Bosch MSK030B-0900-NN, Project Planning Manual

Page: 26 / 282

Designation Symbol Unit Description
Maximum torque
M
max
M
max
For maximum current I
max
, for approx. 400 ms exchangeable maximum torque.
The maximum torque depends on the drive control unit. The only binding maxi‐
mum torque is that specified in the selection lists.
Maximum current
I
max(eff)
A
Maximum, temporarily permissible phase current of the motor winding without ad‐
verse effect on the permanent magnet circuit of the motor.
Torque constant at 20 °C
K
M_N
Nm/A
Ratio of generated torque to motor phase current at motor temperature 20 °C. Val‐
id up to approx. i = 2x I
0_60
.
Voltage constant at 20 °C
K
EMK_1000
V/min
-1
Root-mean-square value of the induced motor voltage at a motor temperature of
20 °C and 1,000 revolutions per minute.
Winding resistance at 20 °C
R
12
Ohm Measured winding resistance among two strands.
Winding inductivity
L
12
mH Measured inductivity between two strands.
Leakage capacitance
C
dis
nF Capacity of short-circuited power connections U, V, W against the motor housing.
Number of pole pairs p - Quantity of pole pairs of the motor.
Moment of inertia of the rotor
J
red
kgm 2
Moment of inertia of the rotor without optional holding brake. Moment of inertia of
the holding brake must be added as well.
Thermal time constant T
th
min
Duration of the temperature rise to 63% of the final temperature of the motor
housing at motor load with permissible S1 continuous torque. The thermal time
constant is determined by the cooling type used.
①: time course of the temperature on the motor housing
Θmax: Highest temperature (motor housing)
T
th
: Thermal time constant
Duration of the temperature rise to 63% of the final temperature of the motor
housing at motor load with permissible S1 continuous torque. The thermal time
constant is determined by the cooling type used.
Maximum speed n
max
min -1
Maximum permissible speed of the motor.
Sound pressure level
L
P
dB(A) Determined values for 1 m distance from motor to measuring point.
Mass m kg Mass of the motor.
Ambient temperature during
operation
T
amb
°C 0 … 40 °C
Protection class - - IP protection class acc. to EN 60034
Insulation class - - Insulation class according to DIN EN 60034-1
Holding torque
M
4
Nm Transmittable holding torque of the holding brake.
Rated voltage
U
N
V Input voltage of the holding brake.
Rated current
I
N
A Current consumption of the holding brake.
Connection time t
1
ms Time until the holding brake is closed.
Disconnection time
t
2
ms Time until the holding brake is released.
Moment of inertia of the brake
J
Br
kgm 2
Moment of inertia of the holding brake, must be added to the moment of inertia of
the motors to determine the total moment of inertia.
Operation mode MSK motors are documented according to test criteria and measuring meth‐
ods in compliance with EN 60034-1. The specified characteristic curves cor‐
respond to operation modes S1 or S3.
Bosch Rexroth AG DOK-MOTOR*-MSK********-PR12-EN-P 24/279
Synchronous Servomotors MSK
Technical data