Watlow CLS200 - Manual (Page 107)

CLS200 Series User’s Guide Chapter 4: Setup
Doc.# 0600-3050-2000 Watlow Anafaze 91
Heat or Cool Control PB
Set the proportional band (also known as gain). A larger
value yields less proportional action for a given deviation
from setpoint.
Selectable values: Dependent upon sensor type.
The controller internally represents the proportional band
(PB) as a gain value. When you edit the proportional band,
you will see the values change in predefined steps; small
steps for narrow proportional band values and large steps
for wide proportional band values.
The controller calculates the default proportional band for
each input type according to the following equation:
Heat or Cool Control TI
Set the integral term (also known as reset). A larger value
yields less integral action.
Selectable values: 0 (off) to 6000 seconds.
Heat or Cool Control TD
Set the derivative constant. A larger value yields greater
derivative action.
Selectable values: 0 to 255 seconds.
Heat or Cool Output Filter
Dampen the response of the heat or cool output. The output
responds to a step change by going to approximately 2/3 of
its final value within the number of scans you set here. A
ALARM
01 HEAT CONTROL
PB ? 50
Default PB (High Range - Low Range)
Gain
----------------------------------------------------------------------- =
ALARM
01 HEAT CONTROL
TI ? 180 SEC/R
ALARM
01 HEAT CONTROL
TD ? 0