Calibrating the 1756-ir6i – Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules User Manual

Page 248

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248

Publication 1756-UM009C-EN-P - December 2010

Chapter 11 Calibrate the ControlLogix Analog I/O Modules

Calibrating the 1756-IR6I

This module does not calibrate for voltage or current. It uses two precision
resistors to calibrate the channels in ohms. You must connect a 1

Ω

precision

resistor for low reference calibration and a 487

Ω

precision resistor for high

reference calibration. The 1756-IR6I only calibrates in the 1…487

Ω

range.

While you are online, you must access the Calibration tab on the Module
Properties dialog box. See

for procedures.

Follow these steps to calibrate your module.

1.

Go to the Calibration Tab on the Module Properties dialog box.

2.

Click Start Calibration to access the Calibration Wizard to step through
the process.

IMPORTANT

When you are wiring precision resistors for calibration, follow
the wiring example on

. Make sure terminals IN-x/B

and RTN-x/C are shorted together at the RTB.

IMPORTANT

Regardless of what ohms application range is selected
prior to calibration, the 1756-IR6I only calibrates in the
1…487

Ω

range.