Overview
Introduction
This section describes the field calibration procedures for the
following types of outputs:
n
Current Output
n
Auxiliary Output
n
Position Proportional Output and Three Position Step Output
WARNING: OUTPUT CALIBRATION MAY REQUIRE ACCESS TO
HAZARDOUS LIVE CIRCUITS, AND SHOULD ONLY BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL. MORE
THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE UNIT
BEFORE CALIBRATION.
Current Output Calibration
Introduction
Calibrate the controller so that the output provides the proper
amount of current over the desired range. The controller can provide
an output current range of from 0 to 21 milliamperes and is usually
calibrated at 4 mA for 0 % of output and 20 mA for 100 % of output,
or any other values between 0 mA and 21 mA. It is not necessary to
re-calibrate the controller in order to change from 4 to 20 mA
operation over to 0 to 20 mA operation, a simple configuration
change is all that is required.See Output Set Up Group for more
information.
Equipment Needed
You will need a standard shop type milliammeter, with whatever
accuracy is required, capable of measuring 0 to 20 milliamps.
241
Chapter 7 - Output Calibration
To Next Page
Loading...
Need help?
General
