Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Alarm Mode

The Alarm mode specifies the analog output state when there is a failure or a measurement error:

High: the output current is set to the High Alarm Limit.

Low: the output current is set to the Low Alarm Limit.

Freeze Current: the output current is set to the last valid value at the time when the error occurs.

Default settings for alarm mode:

Measurement errors: Output current=High.

Measured value out of range: transmitter enters saturation mode (if Limit Alarm is disabled).

Table 5-2. Analog Output: Standard Alarm Values vs. Saturation Values

Level

4–20 mA Saturation Values

4–20 mA Alarm Value

 

 

 

Low

3.9 mA

3.75 mA

 

 

 

High

20.8 mA

21.75 mA

 

 

 

Table 5-3. Analog Output: NAMUR-Compliant Alarm Values vs. Saturation Values

Level

4–20 mA Saturation Values

4–20 mA Alarm Value

 

 

 

Low

3.8 mA

3.6 mA

 

 

 

High

20.5 mA

22.5 mA

 

 

 

5-10

Page 82
Image 82
Emerson Process Management 5300 Alarm Mode, Level MA Saturation Values MA Alarm Value, High 20.8 mA, High 20.5 mA 22.5 mA