￭ Replacing R8i inverter modules
Removing the inverter module(s)
To allow more room for cabling work, the inverter modules can be removed completely
instead of only the fan carriages.
Refer to the drawings below.
Note: As an alternative to using the extraction/installation ramp, a lifter is available from
ABB Service. See Lifter for air-cooled drive modules user's guide (3AXD50000332588
[English]).
WARNING!
Read the safety instructions given in Safety instructions for ACS880
multidrive cabinets and modules (3AUA0000102301 [English]). If you
ignore them, injury or death, or damage to the equipment can occur.
Note: The illustrations represent a frame 2×R8i inverter cubicle with option +F286 (DC
switch-disconnector). On units without +F286, the DC busbars are oriented differently, but
the procedure is otherwise the same.
1.
Do the steps in section Electrical safety precautions (page 57) before you start the work.
2. Open the inverter module cubicle door.
3. Remove the shroud at the top of the cubicle.
4. Detach the terminal block [X50] at the top of the module.
5. Detach the DC busbars from the module. Make note of the order and position of the
screws and washers.
6. Detach the wiring connected to the terminals on the front of the module (including fiber
optic cabling). Move the disconnected wiring aside.
7. Drives with option +C121 (Marine construction) or +C180 (Seismic design):
a. Loosen the bolts holding the transverse retaining bracket both on the left and the
right. (During reassembly, tighten these screws to 9 N·m [6.6 lbf·ft].)
b. Remove the bolts holding the retaining bracket to the module.
c. Remove the retaining bracket.
d. Reinstall the bolts to the module. Tighten to 22 N·m (16 lbf·ft).
WARNING! Do not proceed before the bolts are securely in place.
Otherwise, the parts of the module can become separated and cause
injury or damage.
8. Attach the module extraction/installation ramp (included) to the base of the cabinet so
that the tabs on the mounting bracket enter the slots on the ramp.
WARNING!
Check the markings on the ramp to make sure that it is suitable for the plinth
height.
9. Remove the two retaining screws at the bottom front of the module.
WARNING!
Before you proceed, make sure the cabinet is level, or chock the wheels of
the module.
Maintenance 119
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