Definition Of Parameters - Bosch Rexroth MKE E Series Project Planning Manual

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Technical Data
4.1.4

Definition of Parameters

Continuous torque at standstill 60K Symbol
Continuous current at standstill 60K Symbol
Maximum torque
Maximum current
Torque constant at 20° C
Voltage constant at 20°C
Winding resistance at 20 °C
Winding inductivity
Discharge capacity
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Rexroth MKE Synchronous Motors for Potentially Explosive Areas acc. to ATEX and UL/CSA
ED Relative duty cycle in %
Δt Operating time with constant load
P
Fig.4-2: Relative duty cycle
The values specified in the documentation have been determined on the ba‐
sis of the following parameters:
Cycle time: 15 min
Duty cycle DC: 25%
M
0_60
Unit Nm
Continuous torque that can be applied to the motor output shaft at a speed of
n ≥ 0.1 Hz.
I
0_60(eff)
Unit A
Phase current (crest value) of the motor M
standstill at a speed of n ≥ 0.1 Hz.
M
Symbol
max
Unit Nm
Maximum torque that can be applied for about 400 ms at maximum current I
maximum torque that can be attained depends on the drive control device used. Only
the specified maximum torque in the selection lists is binding.
I
Symbol
max(eff)
Unit A
Maximum, briefly permissible phase current of the motor winding without adverse affect
on the permanent magnet circuit of the motor.
K
Symbol
M_N
Unit Nm/A
Relation of created torque to motor phase current at motor temperature of 20 °C. Valid
up to i = 2x I .
0_60
K
Symbol
EMK_1000
Unit
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.
R
Symbol
12
Unit Ohm
Measured winding resistance between two strands.
L
Symbol
12
Unit mH
Measured inductivity between two strands.
C
Symbol
ab
Unit nF
Capacitiy of short-circuited power connections U, V, W against the motor housing.
DOK-MOTOR*-MKE*GEN2***-PR06-EN-P
required for the continuous torque at
0_60
. The
max