Rockwell-automation T7420A_AF ICS Regent+Plus Analog Input Modules 60H Manual de usuario descargar pdf (Pagina 20)

Analog Input Modules

(T7420A, AF)

Industrial Control Services

Calibration Preparation

The module must be calibrated while connected to an I/O

chassis of an operational Regent

system.

During calibration, the analog input module will be

disconnected from the actual field devices. Appropriate

precautions should be taken to ensure that the disconnection

of the field sensors does not pose a safety risk to plant

personnel or process equipment.

There are Offset, Gain and CMR (Common Mode Rejection)

potentiometers that are common to all of the analog input

channels. These potentiometers are located on the front of the

analog input PCB (see Figure

During the calibration

procedure the Offset and Gain potentiometers will be adjusted.

The CMR potentiometer is factory adjusted and does not

require adjustment in the field.

Important!

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Rockwell-automation T7420A_AF ICS Regent+Plus Analog Input Modules 60H Manual de usuario Pagina 20