YOKOGAWA SC450G, Руководство пользователя

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IM 12D08N05-01E
3-8
<3. INSTALLATION AND WIRING>
WARNING
• Install an external switch or circuit breaker to the power supply of the converter.
• Use an external switch or circuit breaker rated 5A and conforming to IEC 60947-1 or
IEC 60947-3.
• It is recommended that the external switch or circuit breaker be installed in the same
room as the converter.
• The external switch or circuit breaker should be installed within reach of the operator
and identified with marking as a power supply switch to the converter.
• Power lines such as power cables and contact outputs should be fixed securely
onto a wall or construction using cable racks, conduit tubing, nylon bands or other
appropriate ways. Accidental removal from terminals by pulling may result in electric
shock.
Local health and safety regulations may require an external circuit breaker to be installed.
The instrument is protected internally by a fuse. The fuse rating is dependent on the supply
to the instrument. The 250 VAC fuses should be of the “time-lag” type, conforming to
IEC127.
WARNING
Fuse replacement should be performed only by a qualified service personnel.
See Chapter 7. MAINTENANCE, Fuse.
Fuse ratings:
Power supply Fuse type
12-24 VDC, 10W max 2A/250V, Slow
100-240 VAC, 15VA max 0.5A/250V, Slow
3.3.2 Access to terminal and cable entry
Terminals 1 and 2 are used for the power supply.
Guide the power cables through the gland closed to the power supply terminals. The
terminals will accept wires of 2.5 mm
2
(14 AWG). Always use cable finishings if possible.
3.3.3 AC power
Connect terminal L to the phase line of the AC power and terminal N to the zero line. See
figure 3.8 for the power ground. This is separated from input ground by a galvanic isolation.
Should be used the cable beyond 300 V AC.
3.3.4 DC power
Connect terminal 1 to the positive outlet and terminal 2 to the negative outlet.
Should be used the cable beyond 30 V AC.
This is separated from input ground by a galvanic isolation. The size of conductors should
be at least 1.25 mm
2
. The overall cable diameter should be between 6 and 12 mm.