Lcd Display; Configure Security And Alarm - Emerson Rosemount 3051 Reference Manual

Installation
May 2017
3.8.6

LCD display

Transmitters ordered with the LCD option are shipped with the display installed. Installing the display on
an existing Rosemount 3051 Transmitter requires a small instrument screwdriver.
Figure 3-11. LCD Display
A. Extended cover
B. LCD display
C. Jumpers (top and bottom)
D. Interconnecting pins
3.8.7

Configure security and alarm

Security (write protect)
There are three security methods with the Rosemount 3051Transmitter:
1. Security jumper: prevents all writes to transmitter configuration.
2. Local keys (local zero and span) software lock out: prevents changes to transmitter range points via
local zero and span adjustment keys. With local keys security enabled, changes to configuration are
possible via HART.
3. Physical removal of local keys (local zero and span) magnetic buttons: removes ability to use local
keys to make transmitter range point adjustments. With local keys security enabled, changes to
configuration are possible via HART.
You can prevent changes to the transmitter configuration data with the write protection jumper.
Security is controlled by the security (write protect) jumper located on the electronics board or LCD
display. Position the jumper on the transmitter circuit board in the "ON" position to prevent accidental or
deliberate change of configuration data.
If the transmitter write protection jumper is in the "ON" position, the transmitter will not accept any
"writes" to its memory. Configuration changes, such as digital trim and reranging, cannot take place
when the transmitter security is on.
Note
If the security jumper is not installed, the transmitter will continue to operate in the security OFF
configuration.
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D
C
B
A
Reference Manual
00809-0100-4001, Rev KA
Installation