Replacing The Cpu Module - Emerson FB1100 Field Replacement Manual

Replacing the CPU Module

You can replace the CPU module in the field provided that the replacement is the identical CPU
type. Depending upon the CPU type, the CPU module may have one or more additional boards
("daughter boards") sitting on the main CPU board. The procedure for replacing the module is the
same, with the exception that for the FB1200, if you purchased the optional 6-channel expansion
I/O module, you must disconnect it from the old CPU so you can re-connect it to the new CPU.
Restriction
Hazardous area approvals request that any part replaced in the field be the exact same part ("like-
for-like"). Upgrading or substituting different parts violates hazardous area certification.
Refer to the table below for the correct field replacement part number.
Item
CPU board with DC power only
CPU board with lithium battery board (FB1100 only)
CPU board with solar (Div. 2 only) /lead acid battery charge board
CPU board with solar (Div. 2 only)/lead acid battery charge board for
Enersys battery
Important
When replacing one of the CPU and charger boards used with a lead acid battery, ensure your flow
computer has the correct lead acid battery type. To see what type you have, check the part number
shown on the label on the bottom of the battery pack enclosure. See the following compatibility
chart.
Important
Use only accessories (batteries) supplied with the flow computer or sold by Emerson as spare parts
for this flow computer. Substituting a part you obtain elsewhere (such as a battery) voids your
certification.
Charger Board and Lead Acid Battery Compatibility
Lead Acid Battery Type
399186-01-8
399457-00-0 (Enersys)
Ambient Temperature Range
May be used up to a maximum ambient temperature of 80 ° C and a minimum ambient temperature
of –40 ° C; refer to the data plate attached to the device for ambient temperature.
FB1100/FB1200 Flow Computer CPU Module Field Replacement Guide
CPU and Charger Board
399381-01-0
SUPPORTED
SUPPORTED
D301802X012
November 2020
Field Replacement Kit
Part Number
395620-03-1
399393-01-0
399381-01-0
399381-02
CPU Type
CPU and Charger Board
399381-02-0 (for Enersys
battery)
NOT SUPPORTED
SUPPORTED
1