￭ Parameter settings
Set the following parameters:
• Disable the overvoltage control of the drive with parameter 30.30 Overvoltage
control.
• If the thermal switch is wired to the DIIL input, an overheating resistor will, by
default, remove the Run enable signal from the drive. See also parameters 20.11
Run enable stop mode, 20.12 Run enable 1 source and 95.20 HW options word 1.
• If the thermal switch is wired to another digital input input, set the following
parameters.
1. 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.
2. 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.
3. Set parameter 31.02 External event 1 type to Fault.
4. Set parameter 43.07 Brake chopper run enable to Other [bit] and select from
parameter 10.01 DI status the digital input where the thermal switch of the
brake resistor is wired.
5. Set the resistance value of the resistor to parameter 43.10 Brake resistance.
With these parameter settings, the drive generates a fault and coasts to a stop
on brake resistor overtemperature.
WARNING!
If the drive is equipped with a brake chopper but the chopper is not enabled
by the parameter setting, the internal thermal protection of the drive against
resistor overheating is not in use. In this case, the brake resistor must be
disconnected.
Technical data
￭ Ratings
The table below gives the ratings for resistor braking.
Example brake resistor(s)Internal brake chopper
ACS580-
04-…
P
Rcont
E
R
R
Type
R
min
P
brcont
kWkJohmohmkW
U
n
= 400 V
1872002.02×SAFUR125F5002.0250505A-4
27108001.32×SAFUR200F5001.3315584A-4
27108001.32×SAFUR200F5001.3315650A-4
40162000.93×SAFUR200F5000.7400725A-4
40162000.93×SAFUR200F5000.7400820A-4
40162000.93×SAFUR200F5000.7400880A-4
246 Resistor braking
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