ABB ACH550 Quick Start Manual page 3

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Step 3: Remove all control wire and fieldbus connection from terminals (you can leave any existing jumpers). Unscrew

the board enclosure mounting screw from upper right corner.

Step 4: At the bottom of the plastic board enclosure there will be two plastic tabs (on bottom left, one bottom right)

that should be pulled down to separate the enclosure. After they are pulled down, slowly separate the plastic board

enclosure housing about 1 -2 inches to see the two ribbon cables that must be detached from the unit to free the control

board (SMIO-01).

Step 5: After disconnecting the ribbon cables, remove the plastic board enclosure with the control board (SMIO-01) still

mounted in it. Remove the mounting screws from the front panel to complete removing the permanent fixtures keeping

the board in place in the plastic housing.

LVD-EOTKN094U-EN REV A

Effective: 2022-06-30