Lenze i550 - Brake Resistor Connection

Brake resistor connecon
Use intrinsically safe brake resistors to be able to dispense with a separate switch-o device (e.g. a
contactor).
Short connecng cables up to 0.5 m
Up to a cable length of 0.5 m, the cable for the brake resistor and that of the temperature monitoring can be
twisted. Doing so reduces problems due to EMC interference.
R
B
RB1 RB2
①
②
< 0.5 m
T1 T2
Fig. 3: Connecon plan - brake resistor with a cable length of up to 0.5 m
① Wiring to the "brake resistor" connecon on the inverter or another component with brake chopper.
② Oponal: Wiring to a control contact, e. g. a digital input that is set to monitor the thermal contact. If the thermal
contact responds, the voltage supply of the inverter must be disconnected (e. g. switch o the control of the mains
contactor).
Electrical installaon
Brake resistor connecon
156