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3.13 Enable the Internal EMC Filter
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YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
119
3.13 Enable the Internal EMC Filter
◆
Internal EMC Filter
An EMC filter module is built in model CIMR-U
E
/U
W
. The EMC filter module can be
switched between enabled (ON) or disabled (OFF).
Note:
Models CIMR-U
4
0477 to 4
0930 are not available. Be sure to use a stand-alone EMC filter for
models CIMR-U
4
0477 to 4
0930.
DANGER!
Electrical Shock Hazard. Do not touch SW screw while power is applied to the drive. Failure to comply will result in death or
serious injury.
WARNING!
Electrical Shock Hazard. Connect the ground cable correctly. Failure to comply may result in death or serious injury.
NOTICE:
When disabling the internal EMC filter, move the screws from ON to OFF and then tighten to the specified torque.
Completely removing the screws or tightening the screws to an incorrect torque may cause drive failure.
Note:
For floating, impedance grounded, or asymmetrically grounded networks, disconnect the internal EMC filter by moving the SW
screw to the OFF position.
Use size M4 internal EMC filter screws with 1.0 to 1.3 N
m tightening torque.
■
Asymmetrical Grounded Network
shows asymmetrical grounded networks. Asymmetrical networks require first moving the SW screw to
disconnect the internal ground connection. (Drives are shipped with SW screw installed at the OFF position.)
Table 3.27 Asymmetrical Grounded Network
Grounded at the corner of the delta
Grounded at the middle of the side
Single-phase, grounded at the end point
Three-phase variable transformer without solidly grounded
neutral
L1
L2
L3
L1
L2
L3
L1
N
L1
L2
L3
L1
L2
L3
SIEP_C710636_02B_1_0.book 119 ページ 2015年11月25日 水曜日 午後4時56分