Rockwell Automation 1771-IE,D17716.5.7 ANAL.INPUT MOD. User Manual
Page 32
Calibrating the Analog Input Module
Chapter 5
5Ć7
1.
Jumper all 8 input terminals together at the wiring arm.
2.
Connect the precision voltage source to the jumpered input terminals
and to ground.
3.
Set the precision voltage source to the input value required for
minimum output for your particular input range. Remember that you
set the module to operate in voltage mode for calibration.
Range
Input for Minimum Output
1 to 5 V
1.0078 V
0 to 5 V
0.0098 V
Ć10 to 10 V
Ć9.9609 V
0 to 10 V
0.0195 V
4.
Observe the BCD value. It should toggle between 000 and 001 for
equal lengths of time. If not, adjust potentiometer #2.
Do not seal the potentiometer until you have finished adjusting the gain.
Gain
5.
Set the precision voltage source to the input value required for
maximum output for your particular input range. Remember that
you set the module to
Range
Input for Maximum Output
1 to 5 V
4.9766 V
0 to 5 V
4.9707 V
Ć10 to 10 V
9.8828 V
0 to 10 V
9.9414 V
6.
Observe the BCD value. It should toggle between 254 and 255 for
equal lengths of time. If not, adjust potentiometer #3.
7.
Recheck offset and gain to be sure that they are properly set. Adjust
if necessary.
8.
Seal the potentiometers.