Frenic 5000VG7S Series, Инструкция по эксплуатации

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2-9
(5) Braking resistor connecting terminals (P(+) and DB)
The optional braking resistor may be externally
mounted. It is required when the inverter is
operated frequently or under heavy inertia.
1) Connect the braking resistor terminals, P(+) and
DB, to the inverter terminals, P(+) and DB.
2) Lay out so that the wiring length will not exceed
5m. The two leads should be twisted or in close
contact (parallel).
·
Do not directly connect the braking resistor to the DC terminals, P(+) and N(
-
).
Doing so may lead to fire.
(6) DC link circuit terminals (P(+) and N(
-
))
The 200V series, 75kW or higher and 400V
series, 132kW or higher inverters contain no
braking resistor drive circuit. When the braking
resistor is required, a braking unit should be
used.
1) Connect the braking unit terminals, P(+) and
N(
-
), to the inverter terminals, P(+) and N(
-
).
Lay out so that the wiring length will not
exceed 5m. The two leads should be twisted
or in close contact (parallel).
2) Connect the braking resistor terminals, P(+)
and DB, to the braking unit terminals, P(+) and
DB. Lay out so that the wiring length will not
exceed 10m.
The two leads should be twisted or in close
contact (parallel).
When the inverter terminals, P(+) and N(
-
),
are not used, they should be left open. Never
short these terminals or directly connect the
braking resistor. Doing so may break the
inverter.
3) Auxiliary contacts 1 and 2 of the braking unit
have polarity. When connecting a PWM
Converter, see the instruction manual for the
unit.
P1 P( + ) DB N( - )
DC reactor
(DCR)
Braking resistor DB
G
P DB
2
1
(CM)
(THR)
ZZ
Figure 2-3-5 Connection Diagram
(For 200V, 55kW or Lower and 400V, 110kW or
Lower Inverters)
DC reactor
(DCR)
P1 P(+) N(
-
)
External braking resistor DB
G
P
DB
G
P(+)R
P(+)
N(
-
)
Braking unit BU
1
2
1
2
DB
(CM)
(THR)
Figure 2-3-6 Connection Diagram
(200V, 75kW or Higher and 400V, 132kW
or Higher Inverters)
*More than one braking units or braking
resistors may be needed according to a
model. For the details of connection,
refer to the instruction manual for the
braking unit.