Installation and Connection
40 | CTW900
Figure 5.5
– Field supplied externally
ATTENTION!
By supplying the field circuit by means of connector X3, the protection provided by the internal
fuses (F2 and F3) is lost.
In this case, it is necessary to protect the field circuit with external fuses between the X3 connector
and the power supply.
It is recommended to use ultra fast fuses dimensioned according to the maximum current allowed
by the converter (see the Table 5.5).
DANGER!
Before touching the internal fuses of field protection (F2 and F3), make sure voltage is not present
at the R/S/T terminals and also the power supply of the electronics is disconnected.
5.3.3
Power and Grounding Wiring
The use of wiring with gauges suitable for the converter model is essential to prevent damages to the installation
and equipment.
Thus, the following Table 5.1 presents the minimum recommended values for cables or busbars to connect the
armature circuit and also for the protection conductor (PE), based on NBR 5410 standard.
ATTENTION!
When flexible cables are used for the power and grounding connections, proper terminals must be
used.
ATTENTION!
Sensitive equipment, such as PLCs, temperature controllers and thermocouple cables must be
placed at least 25 cm away from the cables between the converter and the motor.
Содержание CTW900
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