ACX1_TAU_SYNC_UserManual_En
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36071 ARZIGNANO (VI) ITALY
Phone +39 0444 470511 - Fax +39 0444 451803
sales@sme-group.com - www.sme-group.com
3.4 Fuse
A fuse protects the Controller and the entire system against shorts circuit in the power section
and it can be mounted in the Controller between the +B and the related terminal.
Anyway, consider that the fuse doesn’t be used to avoid overloads on the Controller or on the AC
Motor. The firmware inside the Controller already manages them so they don’t usually cause the
fuse to blow.
Sizing
In order to select the Fuse Rating, refer to the following formula:
with
and
You must choose a fuse with specific rating and time delay characteristics.
It must carry I
FUSE
indefinitely, but blow within maximum 3 seconds for 2 x I
FUSE
.
The following diagram shows common dimensions for fuse on Controller.
Suggested Manufacturers are FERRAZ, BUSSMAN, LITTELFUSE and others which satisfy the time
delay and dimensions required.
Dimensions[mm]
A 82
B 60
D 20
E 11
Figure 7 – Fuse Dimensions
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