Output Connections - WEG CFW100 User Manual

For the calculation of the line reactance necessary to obtain the desired percentage voltage
„
drop, use:
seeing that:
ΔV - desired line drop, in percentage (%);
V - phase voltage in the inverter input, in volts (V);
e
- rated current of the inverter input;
I
e, rat
- line frequency.
f

3.2.3.3 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 CFW100 is in accordance with
„
the UL508C standard. Note the following information:
1. Trip current equal to 1.2 times the motor rated current (P401).
2. When parameters P156, P157 and P158 (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 spinning 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 - Distance for Cable
V
e
L = 1592 . ΔV .
I . f
e, rat
Separation.
Installation and Connection
[ μH]
CFW100 | 19