Emc Filter - Mitsubishi Electric FR-F740 EC Instruction Manual

Electromagnetic compatibility (EMC)
3.8.3

EMC filter

The inverter is equipped with a built-in EMC filter. Effective for reduction of air-propagated noise
on the input side of the inverter. The EMC filter is factory-set to enable (ON). To disable it, fit the
EMC filter ON/OFF connector to the OFF position. The filter must be deactivated when the in-
verter is used in networks with an isolated neutral (IT networks).
EMC filter OFF
00023 to 00126
Fig. 3-41: Built-in EMC filter
How to disconnect the connector
After confirming that the power supply is off, remove the front cover. (For the front cover
removal method, refer to section 2.2).
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.
Fig. 3-42: Activating the built-in EMC filter
NOTES Fit the connector to either ON or OFF.
Enabling (turning ON) the EMC filter increases leakage current (refer to page 3-46).
WARNING:
P
While power is on or when the inverter is running, do not open the front cover.
Otherwise you may get an electric shock.
3 - 52
00023 to 00126
EMC filter ON EMC filter OFF
(initial setting)
00170, 00250
EMC filter Disengage connector fixing tab
OF/OFF connector
(Side view)
00170, 00250
EMC filter ON
(initial setting)
00310, 00380 00470, 00620
Wiring
00310 to 12120
EMC filter OFF EMC filter ON
(initial setting)
00770 to 12120
Connector
with/without
EMC filter
I001052E
With tab disengaged,
pull off connector straight.
I001053E