Emerson Rosemount 3051 Series Quick Start Manual page 15

January 2020
Default Security is Off (unlocked symbol).
—
You can enable or disable the Security switch in the software.
—
Procedure
1. If the transmitter is installed, secure the loop and remove power.
2. Remove the housing cover opposite the field terminal side. Do not
remove the instrument cover in explosive atmospheres when the
circuit is live.
3. Slide the Security and Simulate switches into the preferred position.
4. Replace the housing cover.
Note
Emerson recommends tightening the cover until there is no gap between
the cover and the housing.
Figure 2-14: Simulate and Security Switches
B
A
A. Simulate disabled position
B. Simulate switch
C. Simulate enabled position
D. Security locked position
E. Security switch
F. Security unlocked position
2.4 Connect wiring and power up
Use copper wire of sufficient size to ensure that the voltage across the
transmitter power terminals does not drop below 9 Vdc. Power supply
voltage can be variable, especially under abnormal conditions, such as when
Quick Start Guide
C
D
E
F
Quick Start Guide
15