If an external brake resistor is used, the settings of the parameters must be the same as the power 
and resistance of the external brake resistor. 
Note: 
Brake overload detection should  be  used with P4.34. If P4.34 is set to  2, the  brake overload 
detection logic uses the external brake resistor parameters to execute fault detection. If this group 
of parameter does not match the power and resistance of the external brake resistor, the brake 
overload fault (Er07-0) may be reported by mistake or even the brake resistor may be burnt down. 
The  regenerative  brake  overload  protection  time  of  the  external  brake  resistor  is  in  direct 
proportion to  the  two  parameters  and  is  in  inverse proportion  to  the  brake  rate during  actual 
running. The two parameters are invalid when P4.34 is not 2.