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3.2.1 Identification of the Power Terminals and Grounding Points
The location of the power, grounding and control connections are shown in
page
199.
Description of the power terminals:
Terminal X1 (L1/L, L2/N and L3 (R, S, T,
„
models only, the power voltage must be connected to L/L1 and N/L2.
Terminal X2 (U/T1, V/T2, W/T3,
„
Terminal X3 (DC-, BR, DC+,
„
the voltage of the DC bus, BR is the connection of the brake resistor and DC+ is the positive
pole of the voltage of the DC bus.
3.2.2 Power and Grounding Wiring, Circuit Breakers and Fuses
ATTENTION!
Use proper cable lugs for the power and grounding connection cables.
„
Refer to
and fuses.
Keep sensitive equipment and wiring at a minimum distance of 0.25 m from
„
the inverter and from the cables connecting the inverter to the motor.
It is not recommended the use of mini circuit breakers (MDU), because of
„
the actuation level of the magnet.
ATTENTION!
Residual Current Device (RCD):
When used in the inverter supply, it must have a pick-up current of 300 mA.
„
Depending on the installation (motor cable length, cable type, multimotor
„
configuration, etc.), the RCD protection may be activated. Contact the RCD
manufacturer for selecting the most appropriate device to be used with
inverters.
NOTE!
The wire gauges listed in
„
Installation conditions and the maximum permitted voltage drop must be
considered for the proper wiring sizing.
In order to meet UL requirements, use ultra fast fuses at the inverter supply
„
with a current not higher than the values presented in
): connection for the motor.
): DC bus and brake connection. DC- is the negative pole of
Table B.1 on page 203
Table B.1 on page 203
Installation and Connection
)): AC power supply. For the single-phase
for recommended wiring, circuit breakers
are approximate values.
Table B.2 on page
Figure A.2 on
204.
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