Rockwell Automation 1771-IE,D17716.5.7 ANAL.INPUT MOD. User Manual

Page 30

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Calibrating the Analog Input Module

Chapter 5

5Ć5

Make this adjustment for channel 1, only.

1. Set switch number 2 ON of the transfer mode switch assembly.

2. Place the module back in its I/O slot, and connect the wiring arm.

3. Change the processor mode select switch to test or program mode.

Turn on power to the processor, I/O chassis, and external power
supply to the module.

4. Connect the precision voltage source:

positive lead to input channel 1

negative lead to DC COMMON of the wiring arm

5. Turn on the precision voltage source and set it to 1.0000 Vdc.

6. Connect the DVM leads to the test points on the front of the module,

positive lead to the red test point, negative lead to the black test
point.

7. Read the voltage at the test points. It must be 0.0000 0.2 mV. If not,

adjust potentiometer #1 on the front of the module (Figure 5.2).

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