Output Connections - WEG CFW300 Manual Del Usuario

Installation and Connection
Procedure to use the dynamic braking:
Connect the brake resistor between the power terminals +BR and BR.
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Use a twisted cable for the connection. Separate these cables from the signal and control
„
wiring.
Dimension the cables according to the application, observing the maximum and effective
„
currents.
If the brake resistor is mounted within the cabinet of the inverter, consider its energy when
„
dimensioning the ventilation of the cabinet.
DANGER!
The internal braking circuit and the resistor may be damaged if the latter is not
properly dimensioned and/or if the voltage of the input power supply exceeds the
maximum value permitted. In order to avoid the destruction of the resistor or risk
of fire, the only guaranteed method is the inclusion of a thermal relay in series with
the resistor and/or a thermostat in contact with its housing, connected in such
a way to disconnect the input power supply of the inverter in case of overload,
as shown in
DANGER!
Le circuit de freinage du variateur interne et la résistance de freinage peuvent
être endommagés s'ils sont mal dimensionnés ou si la tension de ligne dépasse
la valeur permise maximale.
Dans ce cas, la seule méthode garantie pour éviter une surchauffe de la résistance
de freinage et éliminer le risque d'incendie est l'installation d'un relais de surcharge
thermique en série connecté avec la résistance et.ou l'installation d'un thermostat
sur le corps de la résistance, en le câblant de manière à ce qu'il déconnecte
l'alimentation électrique du variateur en cas de surchauffe, comme indiqué sur
la Figure 3.2 on page
Set P151 at maximum value when using dynamic braking.
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The voltage level on the DC Link for activation of the dynamic braking is defined by the
„
parameter P153 (level of the dynamic braking).
Refer to the CFW300 programming manual.
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3.2.3.4 Output Connections

ATTENTION!
The inverter has an electronic motor overload protection that must 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 in the CFW300 is in accordance with
„
the UL508C standard.
20 | CFW300
Figure 3.2 on page 19.
19.