WEG CFW701 User Manual page 21

Installation and Connection
Use twisted cable for the connection. Separate these cables from the signal and control
„
cables.
Size the cables according to the application, respecting the maximum and effective currents.
„
If the braking resistor is installed inside the inverter cabinet, consider its additional dissipated
„
energy when sizing the cabinet ventilation.
The thermal protection of the dynamic braking resistor must be provided externally using
„
a thermal relay in series with the resistor and/or a thermostat in contact with the resistor
frame, connected so as to switch the input power supply of the inverter, as shown in
3.3 on page 16.
Set P0151 and P0185 to their maximum values (400 V or 800 V) when using dynamic braking.
„
The DC link voltage actuation level of the dynamic braking is set by parameter P0153 (Dynamic
„
Braking Level).
Power
supply
Control power
supply
16 | CFW701
Contactor
Thermal
relay
Thermostat
Figure 3.3: Connection of the braking resistor
CFW701
R
S
T
BR DC+
Braking
resistor
Figure