User Manual Technical Data
EM1 Series AC Servo Motors EM1-01-0-EN-2110-MA Page 20 of 72
5 Technical Data
5.1 General Parameter Specified
Parameters used in the manual are lists in the following table.
Table 5.1: Parameters on the Data Sheet
Designation Symbol Unit Description
Drive input voltage V V Input voltage of driver.
Output power P W Output power of the motor operated at rated point.
Rated torque
T
c
Nm Output torque of the motor operated at rated point.
Rated current
I
c
A
rms
Input current of the motor operated at rated point.
Maximum torque
T
p
Nm
Maximum torque that can be applied for about 400 ms
at maximum current.
Maximum current
I
p
A
rms
Maximum current that
Rated speed
ω
c
rpm Velocity of the motor operated at rated point.
Maximum speed
ω
p
rpm Maximum permissible velocity of the motor.
Torque constant
K
t
Nm/A
rms
Relation of crated torque to motor line current at
motor temperature 25°C.
Voltage constant
(back EMF constant)
K
e
V/krpm
Root-mean-square (RMS) value of the induced motor
voltage at a motor temperature of 25°C and 1.000
revolutions per minute (rpm).
Winding resistance R Ω
Measured winding resistance between two strands at
25°C.
Winding inductivity L mH Measured inductivity between two strands.
Moment of inertia of
the rotor
J
kgm
2
(x10
-4
)
Moment of inertia of the rotor without the optional
brake.
Moment of inertia of
the rotor with brake
J
kgm
2
(x10
-4
)
Moment of inertia of the rotor with the optional brake.
Insulation class - - Insulation class according to DIN EN 60034-1.
Degree of protection - - IP protection mode according to EN 60034.
Static friction torque
T
b
Nm Holding torque of the holding brake.
Brake rated current
I
b
A Continuous current of the holding brake.
Brake input voltage
V
b
V Input voltage of the holding brake.
Braking time
T
o
ms Duration until the holding brake applies.
Release time
T
r
ms Duration until the holding brake releases.
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