Lenze i550

10.6.3 Holding brake control
This funcon serves as a low-wear control of a holding brake. The holding is usually mounted
to the motor as an opon. The holding brake can be automacally released via the start com-
mand for the inverter or manually via an external control signal, for instance, by a higher-level
Controller. The interacon of higher-level Controller and holding brake is especially important
for vercal applicaons. Horizontal applicaons need a less demanding holding brake control.
Precondions
•
Observe that the holding brake is an important element of the machine's safety concept as
a whole. Therefore be sure to carry out commissioning of this system part with parcular
care!
•
Holding brakes are not intended for braking during operaon. The increased wear caused
by braking during operaon may destroy the holding brake prematurely!
•
Automac DC braking must be deacvated if a holding brake is used.
•
The holding brake control itself only outputs a digital trigger for releasing the holding
brake. This trigger "Release holding brake [115]" must be assigned to a digital output or, in
the simplest case, to the relay when then switches the brake supply. 4Congure digital
outputs ^ 263
•
If the holding brake is to be controlled via a digital output, the use of an addional relay or
power contactor is required. The digital output is not suited for direct control of a holding
brake.
•
If, instead of an electrically releasing (self-holding) holding brake, an electrically holding
(self-releasing) holding brake is to be controlled, a signal inversion for the digital output
used or for the relay must be set! 4
Congure digital outputs ^ 263
Conguring the motor control
Parameterisable motor funcons
Holding brake control
203