Rosemount 3051S Electronic Remote Sensors - Emerson Process ...

Rosemount 3051S ERS System
Figure 2-7. Housing Rotation
Configure Security and
Alarm
2-12
Reference Manual
00809-0100-4804, Rev AA
January 2011
PlantWeb Housing Junction Box Housing
Housing Rotation Set Screw
(3/32 inch)
LCD display Rotation
In addition to rotating the housing, the optional LCD display on the primary
ERS sensor can be rotated in 90° increments by squeezing the two tabs,
pulling out the display, rotating, and snapping the display back into place.
NOTE:
If the LCD pins are inadvertently removed from the electronics featureboard,
re-insert the pins before snapping the LCD display back into place.
Security Switch
Changes to the ERS system configuration can be prevented with the security
(write protect) switch, which is located on the electronics featureboard of the
ERS primary sensor. See Figure 2-8 for the location of the switch. Position the
switch in the “ON” position to prevent accidental or deliberate change to the
ERS system configuration.
If the write protect switch is in the “ON” position, the ERS System will not
accept any “writes” to its memory. Configuration changes, such as digital trim
and reranging, cannot take place when the security switch is set to “ON.”
Alarm Direction
The alarm direction of the analog output of the ERS system is set by
repositioning the alarm switch, which is located on the electronics
featureboard of the primary transmitter. Position the switch in the “HI” position
to have the ERS system go to high alarm in a fail condition, or position the
switch in the “LO” position to have the system go to low alarm in a fail
condition. See “Alarm and Saturation Levels” on page 3-5 for more
information on alarm and saturation levels.