Lenze 9400 - Manual (Page 266)

7 Braking operation
266
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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7 Braking operation
The 9400 HighLine controller as single-axis controller (single drive) is provided with an integrated
brake transistor.
• The required brake resistor must be connected externally (see Mounting Instructions/Hardware
Manual).
• The rated values for the internal brake transistor are given in the Hardware Manual in the
chapter "Rated data".

Stop!
If the brake resistor actually connected is smaller than the brake transistor
parameterised, the brake chopper can be destroyed!
The brake resistor can be thermally overloaded. Carry out protective measures suitable
for the installation, e.g.:
• Parameterisation of an error response in C00574 and evaluation of the parameterised
error message within the application or within the machine control.  I2t utilisation
- brake resistor ( 270)
• External interconnection using the thermal contact on the brake resistor (e.g. supply
interruption via the mains contactor and activation of the mechanical brakes).

Note!
The brake chopper control is also guaranteed if, for example, the application stands still
or the 24-V supply is not connected and the controller is only fed by the DC bus.