Watlow Series 965 - Manual (Page 29)

WATLOW Series 965 User's Manual 29 Appendix
Calibration
Figure 27 -
Entering the
Calibration Menu.
NOTE:
While in the Calibra-
tion Menu, the
control output(s) go
off and the alarm
output (if present) is
on.
NOTE:
Calibration values
will not be retained
unless you are in the
MANUAL mode. Do
not enter the MAN-
UAL mode until you
are at the correct
input parameters.
Appendix 2
Calibration
Before attempting to calibrate, make sure you read through
the procedures carefully and have the proper equipment
called for in each procedure. Make sure the DIP switches are
in the proper position per input type. See Figure 21, Page 14.
Entering the Calibration Menu
In the Calibration Menu, various input signals must be supplied for the control to
go through its auto calibration. The calibration menu can only be entered from
the LOC parameter in the Setup Menu. Press the Up-arrow/Down-arrow keys
simultaneously for 3 seconds (
±
1 second). The CAL parameter appears in the
lower display with "no" in the upper display.
Any inadvertent change in the displayed data, when pressing the Up-arrow/
Down-arrow keys, is ignored. Calibration values won't be retained unless you
are in the manual mode. Press the Up-arrow/Down-arrow key to change the
upper display to “YES.” Press MODE to enter the calibration sequence.
Upon entering the calibration menu, the upper display window indicates CAL.
It continues to indicate CAL (with the exception of calibration of the 4-20mA
output) while the operator walks through the entire calibration parameter list.
While calibrating the 4-20mA output, the upper display contains a numeric
value to be slewed up or down until the output value is correct. The control
uses the lower display to prompt the user as to what the input should be.
With the dFL parameter, select either U.S. parameters which include displaying
°
F, rate, reset, and proportional band in degrees or units. Or select SI (System
International) and the displayed parameters are
°
C, integral, derivative, and
proportional band in % of span.
Once the information has been properly established and maintained for at least
5 to 10 seconds, the MODE key may then be used to display the next prompt.
After the final input is established, press the MODE key twice to return the unit
to the configuration menu at the top of the parameter list.