Removing The Cpu Module - Emerson FloBoss 107 Instruction Manual

FloBoss 107 Instruction Manual
Loop power +

2.6.1 Removing the CPU Module

Caution
2-14
The CPU contains the firmware, the three built-in communication ports
and LEDs, a reset (RST) switch, RTD input, and a power LED
indicating system integrity.
The internal super-cap backup battery provides backup of data and the
real-time clock when the main power is not connected.
Power In +
Power In —
LOI Tx
LOI Rx
LOI RTS
Ground
RS-485 A
RS-485 B
RS-232 Tx
RS-232 Rx
RS-232 RTS
Ground
RTD Source
RTD +
RTD —
RTD Return
Figure 2-6. CPU Module
Failure to exercise proper electrostatic discharge precautions (such
as wearing a grounded wrist strap) may reset the processor or
damage electronic components, resulting in interrupted operations.
When working on units located in a hazardous area (where explosive
gases may be present), make sure the area is in a non-hazardous
state before performing procedures. Performing these procedures in
a hazardous area could result in personal injury or property damage.
To remove the CPU module:
Perform the backup procedure described in Preserving
1.
Configuration and Log Data in Chapter 7, Troubleshooting.
Remove power from the FB107.
2.
Installation and Use
Loop Output Power
Power Input
EIA-232 (RS-232)
Local LOI Port
EIA-485 (RS-485)
COM1
EIA-232 (RS-232)
COM2
Reset Switch
Resistance Thermal
Device (RTD)
Issued Feb-07