Removing The Optional 6-Channel Expansion I/O Board; Replacing The 6-Channel Expansion I/O Board - Emerson FB2100 Field Replacement Manual

FB2100/FB2200 Flow Computer CPU Enclosure and Electronics Field Replacement Guide
D301803X012
June 2018

Removing the Optional 6-Channel Expansion I/O Board

1. Remove the HMI module. See Removing the HMI Module on page 6.
2. Disconnect the cable between the CPU enclosure and the sensor. See
3. Detach the CPU enclosure from the battery compartment. See Detaching the CPU
4. Remove the CPU enclosure cover. See Removing the CPU Enclosure Cover (Top) on
5. Remove the adapter board. See Removing the Adapter Board on page 12.
6. Remove the CPU board. See Removing the CPU Board on page 14.
7. Remove the two standoffs closest to the connectivity board; these screw directly
8. Carefully slide the 6-channel expansion I/O board out of its socket on the

Replacing the 6-Channel Expansion I/O Board

1. If you removed standoffs that are held on the expansion I/O board, attach them to
2. Carefully slide the 6-channel expansion I/O board into its slot in the connectivity
3. Secure the board to the bottom of the CPU enclosure by tightening the two
4. Attach the CPU board. See Replacing the CPU Board on page 16.
5. Reattach the adapter board. See Replacing the Adapter Board on page 14.
6. Reattach the CPU enclosure cover. See Replacing the CPU Enclosure Cover (Top) on
7. Re-attach the CPU enclosure to the battery compartment. See Re-attaching the
8. Re-connect the cable between the CPU enclosure and the sensor module.
9. Reattach the HMI module. See Replacing the HMI Module on page 7.
18
Disconnecting the Cable Between the CPU Enclosure and the Sensor on page 7.
Enclosure from the Battery Compartment on page 7.
page 10.
through the board to connections on the CPU enclosure bottom.
The other two standoffs have separate screws underneath that hold them onto
the expansion I/O board. (If you are replacing the board itself because it failed,
remove these standoffs and screws as well so you can re-use them on the
replacement board.)
connectivity board and set it aside.
the new replacement expansion I/O board. Torque standoffs to 1 to 2 in-lbs (0.1
to 0.2 N m).
board and make sure it is firmly in place.
standoffs that have connections on the CPU enclosure. Torque standoffs 1 to 2 in-
lbs (0.1 to 0.2 N m).
page 11.
CPU Enclosure to the Battery Compartment on page 9.