Connection of stand-alone option units
Wiring
3 - 42
3.8.3
Connection of a brake unit FR-BU2
When connecting a brake unit to improve the brake capability at deceleration, make connection as
shown below.
Connection example with the GRZG type discharging resistor
햲
If the control contacts are only specified for 230 V control power you must install a transformer
when using a 400 V power supply.
햳
Connect the inverter terminals (P/+, N/ ) and brake unit terminals so that their terminal signals
match with each other. (Incorrect connection will damage the inverter.)
햴
The wiring distance between the inverter, brake unit and resistor unit should be within 5m. If
twisted wires are used, the distance should be within 10 m.
햵
If the transistors in the brake unit should become faulty, the resistor can be unusually hot, causing
a fire. Therefore, install a magnetic contactor on the inverters input side to configure a circuit so
that a current is shut off in case of fault.
햶
Refer to FR-BU2 manual for connection method of discharging resistor.
I002044E
Fig. 3-37:
Connection with the brake unit FR-BU2
Brake Unit
Discharging Resistor
Recommended External Thermal
Relay
FR-BU2-1.5K
GZG 300W-50 (one)
TH-N20CXHZKP-1.3A
FR-BU2-3.7K
GRZG 200-10 (three in series)
TH-N20CXHZKP-3.6A
FR-BU2-7.5K
GRZG 300-5 (four in series)
on request
FR-BU2-15K
GRZG 400-2 (six in series)
on request
FR-BU2-7.5K
GRZG 200-10 (six in series)
TH-N20CXHZKP-3.6A
FR-BU2-15K
GRZG 300-5 (eight in series)
on request
Tab. 3-22:
Recommended external relay
ON
3-phase AC
power supply
OFF
Inverter
5 m
햴
M
3~
Motor
햳
햵
T
햲
햴
Discharging
resistor
햶
Содержание fr-e700 series
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Страница 20: ...Contents XVI ...
Страница 112: ...Operation panel Operation 4 20 ...
Страница 154: ...External operation Basic settings 5 42 ...
Страница 528: ...CC Link IE Field Network Basic Parameter 6 374 ...
Страница 562: ...Meters and measuring methods Troubleshooting 7 34 ...
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