Siemens SIMOTICS S-1FK2 Series User Manual

Motor components and options
4.2 Options
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
47
Holding torque M
4
The holding torque M
4
is the highest permissible torque for the closed brake in steady-state
operation without slip (holding function when motor is at standstill). The data applies for the
state at operating temperature (120 °C).
Dynamic braking torque M
1m
The dynamic braking torque M
1m
is the smallest mean dynamic braking torque that can occur
for an EMERGENCY STOP.
Opening time and closing time
The delay times that occur when switching the brake.
Maximum permissible single switching energy
The maximum permissible single switching energy of an individual EMERGENCY STOP
operation.
After an EMERGENCY STOP with the maximum single operating energy, allow a cooling
time of at least 3 minutes before you operate the motor again.
Maximum EMERGENCY STOP speed
Maximum permitted speed for a safe EMERGENCY STOP procedure.
Total operating energy (service life)
The total switching energy is the sum of the single switching energy (switching energy for
each EMERGENCY STOP procedure). If the total operating energy is exceeded, brakes can
no longer be guaranteed to function correctly.
● Refurbish the motor.
Formula for calculating the operating energy per braking operation
W
BR
= ( J
Mot Br
+ J
load
) • n
mot
² / 182.4
W
Br
/ J
Operating energy per braking operation
n
Mot
/ min
-1
Speed at which the brake is engaged
J
Mot Br
/ kgm
2
Rotor moment of inertia of the motor with brake
J
load
/ kgm
2
Load moment of inertia of the mounting part on the motor with brake (kgm
2
)
182.4
Constant for calculating the circular frequency and SI units
You can find the corresponding data in Chapter "Technical data and characteristics
(Page 63)".

Siemens SIMOTICS S-1FK2 Series Specifications

General

Brand	Siemens
Model	SIMOTICS S-1FK2 Series
Category	Servo Drives
Language	English