Hitachi L100 IP Series, Инструкция по эксплуатации

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Chapter 5 – Wiring
5-1
Chapter 5 – Wiring
CAUTION Fasten the screws with the specified fastening torque so that they will not loosen
unintentionally. Check all terminals for loose screws. Otherwise there is a danger of
fire.
CAUTION Remarks for using earth leakage circuit breakers in the mains supply
Frequency inverters with CE-filters (RFI-filter) and screened motor cables have a
higher leakage current against earth. Especially in the moment of switching this can
cause unintentional triggering of earth leakage circuit breakers. Because of the rectifier
on the input side of the inverter there is the possibility to stall the switch-off function
through amounts of DC current. For these reasons, the following items should be
observed:
Only pulse current sensitive earth leakage circuit breakers which have a short term
delay and a higher trigger current (500mA) should be used. Other components should
be secured with separate earth leakage circuit breakers. Earth leakage circuit breakers
in front of an inverter´s rectifier are not an absolute protection against direct touching.
CAUTION Each phase of the power supply has to be provided with a fuse. Otherwise, there is a
danger of fire.
CAUTION As for motor leads, earth leakage breakers, and electromagnetic contactors, be sure to
use the ones that have the correct rating. Otherwise, there is a danger of fire.
CAUTION Make sure that the mains supply leads are reliably fixed.
Wiring the power supply and motor
In order to connect cables to the power supply and other terminals the terminal cover has to be opened. For
this, first of all the four corresponding screw has to be loosened. The location of the terminals is depicted in
the figure below:
CAUTION Don’t disconnect wires attached to F terminals (fan power supply), otherwise
inverter may overheat. In case the wires are exchanged, the fan doesn’t work. This
terminals cannot be used for the power supply for external device.
When connecting cables, the following details have to be considered:
1) Power supply cables must only be connected to the terminals L1, L2, L3 or L, N.
2) Refer the page 5-5 for wiring equipment and options.
L1 L3 L2 + V U F F - W
Motor
To the power supply
Mains circuit terminals
L N + V U F F - W
NFE:
HFE:
Grounding terminal (PE)