Lenze 8400 - Switching Status of the Motor Holding Brake at the High Current Output

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 343
6 I/O terminals
6.1 Digital input terminals
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6.1.2.2 Switching status of the motor holding brake at the high current output
This function extension is available from version 15.00.00!
For a simple monitoring of the switching status of a motor holding brake connected to the high
current output, the bOutHC_BrakeApplied status signal can be used.
Required steps for a simple monitoring of the switching state:
1. Link the bOutHC_BrakeApplied status signal with the bMBrakeApplied input of the
SB LS_MotionControlKernel
.
2. Activate feedback monitoring of the holding brake control: Set bit 5 in C02582
to "1".
Connection principle
In the following, a connection principle for controlling a motor holding brake via the high current
output is described with the two options for feedback monitoring:
[6-4] Connection principle motor holding brake
Designator
Data type
Value/meaning
bOutHC_BrakeApplied
BOOL
Switching status of a motor holding brake connected to the high current output
• The inverted signal logic of this status signal corresponds to the evaluation of a
real brake contact which provides the FALSE state in case of a released holding
brake and the TRUE state in case of a closed holding brake.
FALSE High current output is controlled if an external 24-V supply is
available (holding brake is released).
TRUE High current output is not controlled (holding brake is closed) or
external 24-V supply is not available.
In the closed state, an open-circuit monitoring is available so that a
brake status error is created in case of an open circuit.
Options for feedback monitoring:
 Use of the internal status signal bOutHC_BrakeApplied
 Evaluation of the switching contact of the holding via a free digital input
 Wire-break detection with a closed holding brake
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