Definition Of Terms For Technical Data - Kollmorgen AKM 2G Manuel D'installation

AKM2G Instructions | 1 English

1.8 Definition of Terms for Technical Data

Technical data for every motor type can be found in chapter "Technical Data"
Technical
All data valid for 40°C environmental temperature and 100K overtemperature of the winding.
Determination of nominal data with constant temperature of adapter flange of 65°C. The data can have
a tolerance of +/- 10%.
Standstill torque M
The standstill torque can be maintained indefinitely at a speed 0<n<100 rpm and rated ambient
conditions.
Rated torque M [Nm]
n
The rated torque is produced when the motor is drawing the rated current at the rated speed. The rated
torque can be produced indefinitely at the rated speed in continuous operation (S1).
Standstill current I
The standstill current is the effective sinusoidal current which the motor draws at 0<n<100 rpm to
produce the standstill torque.
Peak current (pulse current) I
The peak current (effective sinusoidal value) is several times the rated current depending on the motor
winding. The actual value is determined by the peak current of the drive which is used.
Torque constant K
The torque constant defines how much torque in Nm is produced by the motor with 1A r.m.s. current.
The relationship is M=I x K
Voltage constant K
The voltage constant defines the induced motor EMF, as an effective sinusoidal value between two
terminals, per 1000 rpm. Measured at 25°C.
Rotor moment of inertia J [kgcm²]
The constant J is a measure of the acceleration capability of the motor. For instance, at I
acceleration time t
b
Thermal time constant t
The constant t defines the time for the cold motor, under a load of I
th
overtemperature of 0.63 x 105 Kelvin. This temperature rise happens in a much shorter time when the
motor is loaded with the peak current.
Release delay time t
These constants define the response times of the holding brake when operated with the rated voltage
from the servo amplifier.
U
N
Rated mains voltage
U
n
DC-Bus link voltage.
28 Kollmorgen | kdn.kollmorgen.com | August 2020
Data.
[Nm]
0
[A]
0rms
[A]
0max
[Nm/A]
Trms
.
T
[mV/min -1]
Erms
from 0 to 3000 rpm is given as:
with M in Nm and J in kgcm²
0
[min]
th
[ms] / Engage delay time t
BRH
, to heat up to an
0
[ms] of the brake
BRL
the
0