1 internal interfaces, Internal interfaces, 8basic drive functions (mck) – Lenze 8400 User Manual
Page 536
8
Basic drive functions (MCK)
8.12
Holding brake control
536
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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8.12.1
Internal interfaces
In the function block editor, the
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).
• Note!
The brake can also be released when the controller is inhibited!
• During automatic operation, the internal brake logic is
deactivated and the brake is released (supervisor operation). If
the brake control has inhibited the controller, this inhibit is
deactivated again.
• In semi-automatic operation, the brake is released including
feedforward control.
bMBrakeStartValue2
BOOL
(from version 06.00.00)
Selection of the torque feedforward control value for manual specification of the
feedforward control value
• Only effective if bit 4 in
is set to "1".
Feedforward control of the motor before release
FALSE Starting value 1 (
) active.
TRUE Starting value 2 (
) active.
nMBrakeAddValue_a
INT
(from version 06.00.00)
Additive feedforward control value (speed or torque) in [%] for torque feedforward
control when the respective control mode is started
• For speed control: 100 % ≡ reference speed (
)
• For torque control: 100 % ≡ maximum torque (
)
Feedforward control of the motor before release
bMBrakeApplied
BOOL
(from version 06.00.00)
Input for status detection via switching contacts at the brake
• Only effective if bit 5 in
is set to "1".
FALSE Brake is released.
TRUE Brake is applied.
Identifier
Data type
Value/meaning
bBrkReleaseOut
BOOL
Trigger signal for switching element holding brake control via a digital output
• Use bit 0 under
to activate inverted switching element triggering.
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, bMBrakeReleased is immediately set
to FALSE even if the brake closing time has not yet elapsed!
TRUE Brake released (after the brake release time has expired).