Output Connections; Grounding Connections - WEG ADW300 Manual Del Usuario

3.2.4 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 ADW300 is in accordance with
„
the UL508C standard. Note the following information:
1. Trip current equal to 1.2 times the motor rated current (P401).
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.).

3.2.5 Grounding Connections

DANGER!
The inverter must be connected to a protective ground (PE).
„
Use a minimum wire gauge for ground connection equal to the indicated in
„
Table 3.1 on page
Connect the inverter grounding connections to a ground bus bar, to a single
„
ground point or to a common grounding point (impedance ≤ 10 Ω).
The neuter conductor of the line that feeds the inverter must be solidly
„
grounded; however, this conductor must not be used to ground the inverter.
Do not share the grounding wiring with other equipment that operate with high
„
currents (e.g.: high voltage motors, welding machines, etc.).
11.
Installation and Connection
ADW300 | 13