Damping; Process Alerts - Emerson Rosemount 2051 Reference Manual

Reference Manual
00809-0300-4101, Rev BB
4. Verify Analog Input (AI) Block.
Note
Scaling should not be repeated in the AI Block. To ensure no additional scaling is being done
on the AI Block, set the lower values in steps
a. In the Basic Setup >> Units >> Process Value Scale (Analog Input Block) field, enter upper
b. In the Basic Setup >> Units >> Output Signal (Analog Input Block) field, enter upper and
c. From the Basic Setup >> Units >> Output Signal (Analog Input Block) >> Linearization
2.6.4

Damping

User-selected damping will affect the transmitters ability to respond to changes in the
applied process. The Rosemount 2051 has a default damping value of 0.0 seconds applied
in the AI Block.
Damping can be set using,
LOI – see

Class 2 Master – see

Damping configuration using Class 2 Master
1. In the Basic Setup >> Damping >> Filter Time Const field, enter value (in seconds).
2.6.5

Process alerts

Process alerts activate an output alert status when the configured alert point is exceeded.
A process alert will be transmitted continuously if the output set points are exceeded.
The alert will reset once the value returns within range.
Process alert parameters are defined as follows:
Upper alarm: Changes Output Status to Good – Critical Alarm – Hi Limit

Upper warning: Changes Output Status to Good – Advisory Alarm – Hi Limit

Lower warning: Changes Output Status to Good – Advisory Alarm – Lo Limit

Lower alarm: Changes Output Status to Good – Critical Alarm – Lo Limit

Alarm hysteresis: Amount the output value must pass back into range before alarm is

cleared.
Example
Upper alarm = 100 psi. Alarm Hysteresis = 0.5%. After activation at 100 psi, the alarm will
clear once the output goes below 99.5 psi = 100 – 0.5 psi.
Process alerts can be set using a Class 2 Master.
Process alert configuration using Class 2 Master
1. Enter process alerts.
Configuration
and lower values (this value should correspond to the unit selected in step 2b).
lower values (this value should correspond to the unit selected in step 2c).
Type dropdown, select No Linearization.
Table 2-1 and Figure 2-1
Damping configuration using Class 2 Master
4a and 4b to 0 and the upper values to 100.
Configuration
November 2016
13