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2.1.2
EMC filter
This inverter is equipped with a built-in EMC filter (capacitive filter) and common mode choke.
Effective for reduction of air-propagated noise on the input side of the inverter.
The EMC filter is factory-set to disable (OFF).
To enable it, fit the EMC filter ON/OFF connector to the ON position.
The input side common mode choke, built-in the FR-A720-02150(FR-A740-01100) or lower inverter, is always valid
regardless of on/off of the EMC filter on/off connector.
FR-A720-00080 to 00175
FR-A740-00015 to 00090
EMC filter OFF
EMC filter ON
(initial setting)
FR-A720-00080 to 00175
FR-A720-00240, 00330
FR-A740-00015 to 00090
FR-A740-00120, 00170
The FR-A720-00030 and 00050 are not provided with the EMC filter ON/OFF connector. (The EMC filter is always valid.)
<How to disconnect the connector>
(1) Before removing a front cover, check to make sure that the indication of the inverter operation panel is OFF, wait
for at least 10 minutes after the power supply has been switched OFF, and check that there are no residual voltage
using a tester or the like. (Refer to page 6.)
(2) When disconnecting the connector, push the fixing tab and pull the connector straight without pulling the cable or
forcibly pulling the connector with the tab fixed. When installing the connector, also engage the fixing tab securely.
(If it is difficult to disconnect the connector, use a pair of long-nose pliers, etc.)
EMC filter
ON/OFF connector
(Side view)
CAUTION
Fit the connector to either ON or OFF.
Enabling (turning on) the EMC filter increases leakage current. (Refer to page 53)
While power is ON or when the inverter is running, do not open the front cover. Otherwise you may get an electric shock.
FR-A720-00240, 00330
FR-A740-00120, 00170
EMC filter OFF
EMC filter ON
(initial setting)
FR-A720-00460
FR-A720-00610 to 00900
FR-A740-00230, 00310
Disengage connector fixing tab
WARNING
FR-A720-00460 or more
FR-A740-00230 or more
EMC filter OFF
(initial setting)
FR-A720-01150 or more
FR-A740-00380, 00440
FR-A740-00570 or more
With tab disengaged,
pull up the connector straight.
Wiring
EMC filter ON
EMC filter
ON/OFF
connector
U
V
W
15
2
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