Definition and technical terms
This chapter provides information on various technical terms and their meaning.
 | Consider validity framework All data valid for 40 °C ambient temperature and 60 K overtemperature of the winding. The data can have a tolerance of +/- 10 %. |
Peak force Fmax [N]
Peak force at peak current Imax. The force to be achieved depends on the peak output current of the servo drive used. The peak force may be delivered permanently for a maximum of 3 seconds; S5 operation.
Peak current Imax [A]
RMS value of the peak current at peak force Fmax.
Continuous force Fc [N]
Available continuous force in S1 operation close to standstill at continuous current Ic.
Continuous current Ic [A]
RMS value of the continuous current at continuous force Fc.
Maximum velocity Vmax [m/s]
Maximum velocity of the linear motor.
Force constant Kf [N/A]
Ratio of force to current while maintaining the ideal air gap.
Magnetic force of attraction Fa [N]
Force of attraction between magnetic plate and coil unit. Exists even when no current is flowing. Increases with the size of the coil unit and depends on the size of the air gap. See Chapter Air gap. Increases by up to 10% when the peak current is reached
Pole pair distance [mm]
Distance across a pole pair, north pole and south pole, of the magnetic plate.
Mounting height [mm]
Distance between machine bed and machine carriage. Correct mounting height ensures that the motor works smoothly and efficiently, without mechanical obstructions or excessive wear.
Power loss
PL [W]
Power loss occurring during nominal operation or continuous operation that must be dissipated by the cooling system. The cooling unit can be dimensioned based on the sum of the power losses of all components in the cooling circuit. This information is contained in the documentation of the respective product.
Pressure drop
Δp [bar]
Necessary pressure difference of the coolant between the coolant inlet and coolant outlet in order to achieve the minimum flow rate in the component to be cooled. This information is contained in the documentation of the respective product.
Flow rate
Qmin [I/min]
Coolant flow rate required for nominal operation or continuous operation of the component to be cooled. This information is contained in the documentation of the respective product.