Output Connections - WEG CFW500 Serie Manual Del Usuario

Installation and Connection
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
Set P0151 at maximum value when using dynamic braking.
„
The voltage level on the DC bus for activation of the dynamic braking is defined by
„
the parameter P0153 (level of the dynamic braking).
Refer to the CFW500 programming manual.
„

3.2.3.5 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 CFW500 is in accordance
„
with the UL508C standard. Note the following information:
1. Trip current equal to 1.2 times the motor rated current (P0401).
2. When parameters P0156, P0157 and P0158 (Overload current at
100 %, 50 % and 5 % of the rated speed, respectively) are manually
set, the maximum value to meet the condition 1 is 1.1 x P0401.
ATTENTION!
If a disconnect switch or a contactor is installed at the power supply
between the inverter and the motor, never operate it with the motor turning
or with voltage at the inverter output.
The characteristics of the cable used to connect the motor to the inverter, as well
as its interconnection and routing, are extremely important to avoid electromagnetic
interference in other equipment and not to affect the life cycle of windings and bearings
of the controlled motors.
Keep motor cables away from other cables (signal cables, sensor cables, control cables,
etc.), according to item 3.2.6 Cable Separation
Connect a fourth cable between the motor ground and the inverter ground.
14 | CFW500
Distance.
- English -
figure 3.2.