BECKHOFF AL2000 Linear servomotor - Manual (Page 50)

Technical data
11 Technical data
All data valid for 40 °C ambient temperature and 100 K overtemperature of the winding.
The data can have a tolerance of +/­ 10%.
11.1 Term definitions
Winding type
The winding type describes the structure of the windings. Depending on the coil unit this can be the N­type
or the S­type, which differ in their electrical values. The N­type (normal) represents the standard. The S­type
(speed) is characterised by a higher max. speed and a higher current consumption.
Peak force 3 s Fp (N)
The peak force specifies the maximum force of the motor. It cannot be constantly generated.
Peak current (IPa)
The peak current is the maximum permissible current.
Continuous force with water cooling (Fcw)
The continuous force with water cooling is the force which the motor can constantly generate if the water
cooling is used.
Continuous force with air cooling (Fca)
The continuous force with air cooling is the force which the motor can constantly generate if the water
cooling is not used.
Continuous power loss (Pca)
The continuous power dissipation is the max. power dissipation of the motor. It can be used for the
calculation of the cooling systems.
Power constant (Kf)
The power constant specifies how much force in Newtons the motor generates with 1A effective sine current.
The relationship is F=I x Kf (up to I = 2 x I0)
Pole spacing
The pole spacing is the period in which the magnetic field (north/south) of the magnetic plate repeats itself.
Magnetic attractive force (Fa)
The magnetic attractive force acts between the magnetic plate and the coil unit even if no current is flowing.
It increases with the size of the motors.
Air gap
The air gap is the distance between the magnetic plate and the coil unit. It must be adhered to in order to
attain the rated and maximum values of the motor. The overall mounting height over the magnetic plate and
coil unit is given in the dimensional drawings. If this height is adhered to, the air gap will be correct.
Linear servomotor AL2xxx 50 Version 4.0