Weq CFW700 Serie Manual Del Usuario página 20

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
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
(*) The effective braking current can be calculated as follows:
I . √t (min)
I = max br
effective
5
Contactor
Thermal
relay
Thermostat
Figure 3.3: Connection of the braking resistor
Installation and Connection
Figure 3.3 on page
CFW700
R
S
T
BR DC+
15.
Braking
resistor
CFW700 | 15