Rockwell Automation 1771-IFE ANALOG INPUT MODULE - Manual (Page 46)

Chapter
6
Publication 1771Ć6.5.115 - February 1999
Calibrating Your Module
In this chapter, we describe:
•
checking your calibration
•
calibrating your module.
Your module is shipped to you already calibrated. If you are
checking calibration, or if it becomes necessary to recalibrate the
module, you must do so with the module in an I/O chassis. The
module must communicate with the processor and industrial
terminal.
Before calibrating the module, you must enter ladder logic into the
processor memory, so that you can initiate BTWs to the module, and
the processor can read inputs from the module.
Periodically (frequency based on your application), check your
module calibration. Calibration may be required to remove module
error due to aging of components in your system.
Calibration can be accomplished using either of two methods:
•
manual calibration, as described below.
•
6200 I/O CONFIGURATION software – refer to your 6200
software publications for procedures for calibrating.
When calibrating your module, you must perform:
•
offset calibration first
•
gain calibration second
In order to calibrate your input module you will need the following
tools and equipment:
Tool or Equipment Description Model/Type Available from:
Precision Voltage Source 0-100mV, 1
µ
V resolution Analogic 3100, Data Precision 8200
or equivalent
Industrial Terminal and
Interconnect Cable
Programming terminal for A-B
family processors
Cat. No. 1770-T3 or Cat. No.
1784-T45, -T47, -T50, etc.
Allen-Bradley Company
Highland Heights, OH
Chapter Objective
When and How to
Calibrate Your Analog
Input Module
Toolsand Equipment