Lenze E84DSxxx - Manual (Page 307)

Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05
307
8 Basic drive functions (MCK)
8.4 Holding brake control
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8.4.1 Internal interfaces
In the function block editor, the LS_MotionControlKernel system block provides the following
internal interfaces for the basic function "holding brake control":
Inputs
Outputs
Identifier
Data type
Information/possible settings
bBrkRelease
BOOL
Releasing/applying the brake in connection with the selected operating mode
FALSE Apply brake.
• During automatic operation, the internal brake logic controls the
brake.
TRUE Release brake manually (forced release).
• During automatic operation, the internal brake logic is
deactivated and the brake is released. If the brake control has
inhibited the controller, this inhibit is deactivated again.
bBrkStartValue2 Inputs have no function on the 8400 protec StateLine!
nBrkAddValue_a
bBrkApplied
Identifier
Data type
Value/meaning
bBrkReleaseOut
BOOL
Trigger signal for switching element holding brake control via a digital output
• Use bit 0 under C02582 to activate inverted switching element triggering.
 Functional settings
FALSE Apply brake.
TRUE Release brake.
bBrkReleased
BOOL
"Brake released" status signal considering the brake release time
• When the holding brake is triggered to close, bBrkReleased is immediately reset
to FALSE even if the brake closing time has not yet elapsed!
TRUE Brake released (after the brake release time has expired).

Stop!
The digital outputs are not suitable for the "direct" control of a holding brake!
• Connect the digital output connected to the trigger signal bBrkReleaseOut with a relay
or power contactor which switches the brake supply.
• When a power contactor is used, the response and release time of the earth contact is
added to the response and release time of the brake. Both times must also be
considered for parameterising the closing and opening time of the holding brake