Connection Of The Braking Resistor; Output Connections - WEG CFW700 User Manual

Power
supply
Control power
supply
(*) The effective braking current can be calculated as follows:
I . √t (min)
I = max br
effective
5

3.2.3.3 Output Connections

ATTENTION!
The inverter has an electronic motor overload protection that shall be adjusted
„
according to the driven motor. When several motors are connected to the
same inverter, install individual overload relays for each motor.
The motor overload protection available for the CFW700 is in accordance
„
with UL508C as per the following information:
- "Trip" current equal to 1.25 times the motor rated current (P0401) adjusted
in the "Oriented Start-up" menu.
- The maximum value of P0398 (Motor Service Factor) is 1.15.
- Parameters P0156, P0157 and P0158 (Overload Current at 100 %,
50 % and 5 % of the rated speed, respectively) are automatically adjusted
when the parameters P0401 (Motor Rated Current) and/or P0406 (Motor
Ventilation) are changed on the "Oriented Start-up" menu. If the parameters
P0156, P0157 and P0158 are set manually, the maximum allowed value
is 1.05 x P0401.
Contactor
Thermal
relay
Thermostat
Figure 3.3: Connection of the braking resistor
Installation and Connection
CFW700
R
S
T
BR DC+
Braking
resistor
CFW700 | 17