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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
291
5
Motor control (MCTRL)
5.13
Braking operation/brake energy management
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5.13.2.1
Inverter motor brake
This function extension is only available from version 04.00.00!
With this braking method, which can be selected as an alternative in
energy in the motor is converted as a result of dynamic acceleration/deceleration with down-
ramping of the ramp function generator..
Tip!
If no brake resistor is used, the DC injection brake can also be used for a braking process in
addition to the "inverter motor brake" and "Stopping of the ramp function generator".
In applications with high mass inertia and long braking times (> 2 s), we recommend the
use of the DC injection brake.
• The DC injection brake provides for an oscillation-minimised braking. The braking
process generally takes more time than the "inverter motor brake" function with an
optimised setting. Moreover, the function is only recommended for braking to a
standstill.
In the following cases we recommend the "inverter motor brake" function:
• With servo control (SC).
• For all applications that do not require braking to a standstill (e.g.braking to a lower
speed setpoint) or the braking process can be interrupted by selecting a new speed
setpoint.
• For applications with low mass inertias and a short braking time (< 1 s).
• For all applications where braking should be as quick as possible.
Stop!
• This braking method only works without intervention of a position controller in the
case of speed-controlled applications!
• When the "inverter motor brake" function is used, the
not adapted. If it is braked too frequently, there is a risk of the motor being thermally
overloaded or the motor overload monitoring does not work properly!
• The "inverter motor brake" function must not be used with vertical conveyors (hoists)
or with active loads!