Analog Input (Ai); Simulation; Configure The Ai Block - Emerson Rosemount 3144P Reference Manual

Rosemount 3144P

ANALOG INPUT (AI)

Simulation

Configure the AI block

4-14
Simulate replaces the channel value coming from the Sensor Transducer
Block. For testing purposes, it is possible to manually drive the output of the
Analog Input Block to a desired value. There are two ways to do this.
Manual Mode
To change only the OUT_VALUE and not the OUT_STATUS of the AI Block,
place the TARGET MODE of the block to MANUAL. Then, change the
OUT_VALUE to the desired value.
Simulate
1. If the SIMULATE switch is in the OFF position, move it to the ON
position. If the SIMULATE jumper is already in the ON position, you
must move it to off and place it back in the ON position.
NOTE
As a safety measure, the switch must be reset every time power is
interrupted to the device in order to enable SIMULATE. This prevents a
device that is tested on the bench from getting installed in the process with
SIMULATE still active.
2. To change both the OUT_VALUE and OUT_STATUS of the AI Block,
set the TARGET MODE to AUTO.
3. Set SIMULATE_ENABLE_DISABLE to 'Active'.
4. Enter the desired SIMULATE_VALUE to change the OUT_VALUE
and SIMULATE_STATUS_QUALITY to change the OUT_STATUS.
If errors occur when performing the above steps, be sure that the
SIMULATE jumper has been reset after powering up the device.
A minimum of four parameters are required to configure the AI Block. The
parameters are described below with example configurations shown at the
end of this section.
CHANNEL
Select the channel that corresponds to the desired sensor measurement. .
Channel
1
2
3
4
L_TYPE
The L_TYPE parameter defines the relationship of the sensor measurement
(sensor temperature) to the desired output temperature of the AI Block. The
relationship can be direct or indirect.
Direct
Select direct when the desired output will be the same as the sensor
measurement (sensor temperature).
Reference Manual
00809-0100-4021, Rev EA
Measurement
Input 1
Input 2
∆T
Body Temperature
March 2007