Emerson Rosemount 2051G - Setting Security Switch; HART Lock

37
Reference Manual
00809-0400-4101, Rev BA
Electrical Installations
January 2018
Electrical Installations
Figure 4-2. 4–20 mA Electronics Board
4.4.1 Setting security switch
The security switch is used to prevent changes to the transmitter configuration data. If the security
switch is set to the locked location ( ), any transmitter configuration requests sent via HART, LOI, or
local configuration buttons will be rejected by the transmitter and the transmitter configuration data will
not be modified. Reference Figure 4-2 for the location of the security switch. Follow the steps below to
enable the security switch.
1. Set loop to manual and remove power.
2. Remove transmitter housing cover.
3. Use a small screwdriver to slide the switch to the lock ( ) position.
4. Replace transmitter housing cover; cover must be fully engaged to comply with explosion proof
requirements.
4.4.2 HART lock
The HART Lock prevents changes to the transmitter configuration from all sources; all changes
requested via HART, LOI, and local configuration buttons will be rejected. The HART Lock can only be set
via HART communication, and is only available in HART Revision 7 mode. The HART Lock can be enabled
or disabled with a Field Communicator or AMS Device Manager.
Without LCD display meter With LCD display /LOI display
A. Alarm
B. Security
A
B