Stober SD6 - Contact

ID 442426.04 238WE KEEP THINGS MOVING
Holding brake
11
Manual SD6
B25 determines whether the motor will continue to be powered with the brake
set for stop and quick stop. This is especially useful for positioning. After a stop
the motor remains fully powered for time B27. After this time has elapsed,
power is lowered to the level specified in B25. With a setting of 0 % and the
brake set (stop or quick stop) the motor is unpowered and flux is removed. This
offers the advantage of better thermal results for the motor because the motor
can cool off during the pause times. The disadvantage is the additional
magnetization time (rotor time constant, about 0.5 s). The time required is
determined by the drive controller and added to the brake release time F04.
In the case of reduced halt flux B25, the full flux current will be maintained for
time B27 if the brake is set and the power board is active.
For control modes with torque specification only. Reference torque or reference
force currently required by the speed controller. The reference value for
consideration on the load side is C09, for consideration on the motor side B18.
In control modes ASM - U/f control, ASM - slip compensated and ASM -
sensorless vector control (B20), the brake is released so it will be released
when the motor-related velocity in F02 is reached.
While the brake is released, an acceleration ramp is used which is calculated
from the total set time t
rel
and F02.
If the holding brake is indirectly connected via a contactor (F93), the total
release time t
rel
=F04 + 1.2*F94.
In control modes ASM - V/f control, ASM - slip compensated and ASM -
sensorless vector control (B20), the brake is already set if the speed falls below
the motor-related velocity set in F03 during stopping.
While the brake is set, a braking ramp is used which is calculated from the total
set time t
set
and F03.
If the holding brake is indirectly connected via a contactor (F93), the total set
time t
set
=F05 + 1.2*F95.
Display of the Brakes are set state.
The state is calculated from the brake set time F05 and the activation of the
brake.
• Element 0: Both brakes are set.
• Element 1: Brake 1 is set.
• Element 2: Brake 2 is set.
F08[0] shows whether both brakes are set (after brake engaging time and if
applicable feedback through the brake module).
F08[1] shows whether brake 1 is set (after brake engaging time and if
applicable feedback through the brake module).
B25 halt flux version 0
B27 time halt-flux version 0
E170 T-reference version 0
F02 brake release speed version 0
F03 brake set speed version 0
F08 brake is closed version 0
F08[0] brake is closed all utilized brakes version 0
F08[1] brake is closed brake 1 version 0