Rockwell-automation 1771-IFE ANALOG INPUT MODULE Manual do Utilizador descarregar pdf (Página 47)

6–2 Calibrating Your Module

     

If a calibration check of your module becomes necessary:

1. Verify that the module is in voltage mode. In single-ended mode,

apply voltages to channels 1 through 16.

2. Send a configuration block transfer write to the module that

replicates the specific application. (This forces the module to do

an internal calibration.)

3. Apply –10V, –5V, –2.5V 0V, 1V, 2.5V, 5V, and 10V to the

module. In differential, apply voltages to channels 1 through 8

Verify that the values returned are within 0.1% of bipolar full

scale. .

Range Scaling Accuracy (V/mA)

  

   

    

     

    

     

    

Range Error (counts) (no scaling)

 

 

   

   

   

   

   

4. If values are within tolerance, no calibration is necessary. If not,

perform calibration below.

Checking Module

Calibration

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Rockwell-automation 1771-IFE ANALOG INPUT MODULE Manual do Utilizador Página 47