BECKHOFF AM8100 - Manual (Page 18)

Technical description
6.4 Options
Holding brake
The holding brake is integrated in the motor. It increases the motor length and the rotor moment of inertia.
Radial shaft­sealing ring
Radial shaft­sealing ring (FKM) for sealing against splash water. This increases the protection class of the
shaft bushing to IP65.
Feather key
The motors are available with feather key groove and fitted feather key according to DIN6885. The rotor is
balanced with half a feather key.
OCT
This model features a different feedback system in place of the resolver.
Notice
Installation options and reduction of rated values
• With the exception of the sealing ring, the options cannot be retrofitted.
• The option sealing ring can lead to a reduction of the rated data.
6.5 Selection criteria
The three­phase servomotors are designed for operation with servo terminals.
Both units together form a speed or torque control Loop.
The main selection criteria are:
• Standstill torque M0 [Nm]
• Maximal torque Mmax [Nm]
• Rated speed at rated supply voltage nn [min­1]
• Moment of inertia of motor and load J [kgcm²]
• Effective torque (calculated) Mrms [Nm]
The static load and the dynamic load (acceleration/braking) must be taken into account in the calculation of
the required motors and servo terminals. Formulas and calculation example are available from our
applications department on request.
Synchronous servomotor AM8100 18 Version 1.1