ABB ACS880-104

￭ Frame R5i
General
The DC input and AC output terminals are located at the bottom of the module. The ZCU-12
control unit is mounted underneath the front cover; the control unit contains the basic I/Os
and slots for optional I/O modules. Other optional equipment is primarily installed on separate
mounting plates.
The module should be fitted with external DC fuses. Frame R5i modules have an internal
capacitor pre-charge circuit.
Frame R5i layout
ExplanationItem

2
7
3
6
8
9
4
5
1
10
11
DC connection1
AC connection2
ZCU control unit3
I/O terminal blocks4
Slots for optional I/O modules5
Memory unit6
Control panel holder7
Cooling fan8
Front cover9
Front cover retaining clip
To remove the front cover, use a screwdriver to
push the clip down, and pull cover outwards by
its bottom edge.
10
Varistor board and EMC filter connecting screws
(VAR and EMC). Should not be present in an
ACS880-104.
11
26 Hardware description