Configuration - Emerson Rosemount 2511 Quick Start Manual

October 2019
4

Configuration

4.1 Adjustment of the signal output
Fail Safe High (FSH) setting
When the level switch is used to indicate a full-silo, set to Fail Safe High. A
power failure or line break is regarded as a full-silo signal (as protection
against overfilling).
Fail Safe Low (FSL) setting
When the level switch is used to indicate an empty-silo, set to Fail Safe Low.
A power failure or line break is regarded as an empty-silo signal (as
protection against running dry).
Figure 4-1: Setting FSH or FSL
A. FSL setting (DIP-switch position up)
B. FSH setting (DIP-switch position down)
Note
See Signal output (switching logic)
4.2 Sensitivity
The level switch is factory-set to high sensitivity (switch position B)and
normally does not to be changed. However, if the bulk solids material has a
frequent tendency to cake or deposit, the setting switch can be set to
position A to decrease the sensitivity of the probe.
Quick Start Guide
A
B
for how FSH and FSL operates.
Quick Start Guide
19