During the opening times of the brake (co22, co23) the
co26[1] start speed is active to build up a torque. During
the closing times (co24, co25) the co26[2] stop speed is
active to guarantee a torque.
The position controller is automatically activated when the
brake is opened and closed, the set position is automati-
cally taken over from the actual position and kept con-
stant.
During the first 25% of co22 brake ctrl open delay, the
precontrol torque is increased up to the value in co26[3]
and then remains constant.
In addition to the pre torque setting, the current actual
torque is determined and stored as new pre-torque value
in co26[3] before the brake is closed.
➢ In most cases it makes sense to control the brake from the state machine. Therefore the op-
tions: application + force switch on + sc delay on + torque transfer mode should be activated
in co21 brake control mode.
➢ For start-up or if the complete brake control shall be adapted by an external control, value 0 is
recommended for co21 brake control mode. In this case, 0 should be set for the times co22
... co25.
➢ For open-loop applications torque transfer with start and stop speed is recommended, for
closed-loop drives torque transfer with postion control can be used.
➢ If you know the exact load torque, you can achieve best results with pre torque, without
movement when opening the brake.
➢ 5-Step or Hf-Detect are suitable methods for the rotor position detection when the holding
brake is closed; cvv is unsuitable when the brake is closed.
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