￭ Mechanical installation
Refer to the resistor manufacturer’s instructions.
￭ Electrical installation
Measuring the insulation
See the electrical installation instructions of the drive.
Connecting power cables
See the electrical installation instructions of the drive.
Connection the control cables
Connect the thermal switch of the brake resistor as described in Protecting the system
against thermal overload (page 179).
Start-up
Set the following parameters:
1.
Disable the overvoltage control of the drive with parameter 30.30 Overvoltage
control.
2.
Set the source of parameter 31.01 External event 1 source to point to the digital
input where the thermal switch of the brake resistor is wired.
3.
Set parameter 31.02 External event 1 type to Fault.
4.
Enable the brake chopper by parameter 43.06 Brake chopper enable. If Enabled
with thermal model is selected, set also the brake resistor overload protection
parameters 43.08 and 43.09 according to the application.
5.
Check the resistance value of parameter 43.10 Brake resistance.
With these parameter settings, the drive generates a fault and coasts to a stop on brake
resistor overtemperature.
Resistor braking 181
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