Technical Data Terminology

See the individual servo motor series sections for their respective technical data, dimensional drawings, and key and keyway dimension details.
All data is 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%.

Term	Definition
Peak Current, (pulse current) I_0max [A]	The Peak Current (effective sinusoidal value) is several times the rated current, depending on the servo motor winding. The actual value is determined by the peak current of the drive which is used.
Rated Torque, M_n [Nm]	The Rated Torque is produced when the servo 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).
Release Delay Time t_BRH[ms] / Engage Delay Time t_BRL[ms] of the brake	These constants define the response times of the holding brake when operated with the rated voltage from the servo drive.
Rotor Moment of Inertia, J [kg-cm²]	The constant J is a measure of the acceleration capability of the servo motor. Example: At I₀, the acceleration time t_b from 0 to 3000RPM is given as: with M₀ in Nm and J in kg.cm².
Standstill Current, I_0rms [A]	The standstill current is the effective sinusoidal current which the servo motor draws at 0<n<100RPM to produce the standstill torque.
Standstill Torque, M₀ [Nm]	The standstill torque can be maintained indefinitely at a speed 0<n<100RPM and rated ambient conditions.
Thermal Time Constant, t_th [min]	The constant t_th defines the time for the cold servo motor, under a load of I_0rms, to heat up to a temperature rise of 0.63 x 105 Kelvin. This temperature rise happens in a much shorter time when the servo motor is loaded with the peak current.
Torque Constant,	The Torque Constant defines how much torque in Nm is produced by the servo motor with 1A r.m.s. current. The relationship is M=I x K_T .
U_N	Rated mains voltage.
U_n	DC-Bus link voltage.
Voltage Constant, K_Erms [mV/min^-1]	The Voltage Constant defines the induced servo motor EMF, as an effective sinusoidal value between two terminals, per 1000RPM. Measured at 25 °C.