Lenze i550 Series Project Planning Manual

Brake resistor connecon
If wiring of the brake resistor can be kept short, it is sucient to twist the cables. Up to 0.5 m
of cable length, this applies to the cable of the brake resistor and the cable of temperature
monitoring. This procedure reduces interferences caused by problems with the EMC.
Cables for a brake resistor - short version

R
B
RB1 RB2
< 0.5 m
T1 T2

Fig. 11: Connecon plan - brake resistor with a cable length of up to 0.5 m
① For the connecon of the "brake
resistor" to the inverter or another
component with brake chopper
② For a control contact, e.g. digital
input that is set to the monitoring
mode of the thermal contact
If wiring of the brake resistor cannot be kept short, a shielded cable is required. The cable of
the brake resistor shall not exceed a length of 5 m.
For the cable of temperature monitoring, twisng is sucient. This procedure reduces inter-
ferences caused by problems with the EMC.
Cables for a brake resistor - long version
R
B
RB1 RB2
< 5 m
T1 T2
 
Fig. 12: Connecon plan - brake resistor with a cable length of up to 5 m
① For the connecon of the "brake
resistor" to the inverter or another
component with brake chopper
② For a control contact, e.g. digital
input that is set to the monitoring
mode of the thermal contact
Informaon on electrical installaon
Brake resistor connecon
61

Lenze i550 Series Specifications

General

Protection Class	IP20
Ambient Temperature	-10°C to +50°C
Overload Capacity	150% for 60 seconds
Control Type	Vector control
Communication Interfaces	CANopen, Modbus, Ethernet, PROFIBUS, PROFINET
Safety	STO (Safe Torque Off)
Frequency Range	0 Hz
Cooling Method	Air cooling
Storage Temperature Range	-25°C to +70°C
Input Voltage Range	3-phase 380...480 V AC -15%/+10%