Emerson Rosemount 2051 Reference Manual page 68

Electrical Installation
September 2020
Note
1-5 Vdc alarm and security switches are located in the same location as 4-20 mA output
boards.
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
the transmitter configuration data will not be modified. Reference
location of the security switch. Follow the steps below to enable the security switch.
Procedure
1. Set loop to manual and remove power.
2. Remove transmitter housing cover.
3. Use a small screwdriver to slide the switch to the locked ( ) position.
4. Replace transmitter housing cover; cover must be fully engaged to comply with
explosion proof requirements.
4.4.2 HART Lock
The HART
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.
Configuring HART Lock using Field Communicator
From the HOME screen, enter the fast key sequence.
Device Dashboard Fast Keys
Procedure
1. Right click on the device and select Configure.
2. Under Manual Setup select the Security tab.
3. Select Lock/Unlock button under HART Lock (Software) and follow the screen
prompts.
Configuring HART Lock using AMS Device Manager
Procedure
1. Right click on the device and select Configure.
2. Under Manual Setup select the Security tab.
3. Select Lock/Unlock button under HART Lock (Software) and follow the screen
prompts.
68
®
, LOI, or local configuration buttons will be rejected by the transmitter and
®
Lock prevents changes to the transmitter configuration from all sources; all
Reference Manual
00809-0100-4107
Figure 4-2 for the
2, 2, 6, 4
Rosemount 2051 Pressure Transmitter