Siemens SIMOTICS S-1FK2 Series Configuration Manual page 49

Holding torque M
The holding torque M
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
The dynamic braking torque M
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
W
Br
n
Mot
J
Mot Br
J
load
182.4
You can find the corresponding data in Chapter "Technical data and characteristics
(Page 63)".
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
4
is the highest permissible torque for the closed brake in steady-state
4
1m
J J n
= ( + ) •
Mot Br load mot
/ J Operating energy per braking operation
/ min Speed at which the brake is engaged
-1
/ kgm Rotor moment of inertia of the motor with brake
2
/ kgm Load moment of inertia of the mounting part on the motor with brake (kgm
2
Constant for calculating the circular frequency and SI units
is the smallest mean dynamic braking torque that can occur
1m
² / 182.4
Motor components and options
4.2 Options
)
2
47