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4.
Check the condition of the fuses. If a fuse is blown, replace all fuses with similar fuses
as follows:
•
Loosen the nuts of the fuses and pull the fuses out. Do not remove the nuts
completely. If you remove the nuts completely, there is a risk that they fall inside
the cubicle.
•
Install the new fuses. Tighten the nuts first by hand or applying maximum 5 N·m
force. Tightening torques for M12 nuts are 50 N·m (37 lbf·ft) for Bussmann fuses,
and 46 N·m (34 lbf·ft) for Mersen (Ferraz-Shawmut) fuses.
5.
Attach the shrouding and close the door.
Control panel
Refer to
ACS-AP-I, -S, -W and ACH-AP-H, -W Assistant control panels user's manual
(3AUA0000085685
Control units
BCU control unit types
￭
There are three variants of the BCU control unit used in ACS880 drives: BCU-02, BCU-12
and BCU-22. These have a different number of converter module connections (2, 7 and 12
respectively) but are otherwise identical. The three BCU types are interchangeable as long
as the number of connections is sufficient. For example, the BCU-22 can be used as a direct
replacement for both BCU-02 and BCU-12.
[English]).
4
Maintenance 161
3
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