Watlow Series D8 - Manual (Page 154)

Chapter 6: Menu and Parameter Reference Series D8 User’s Guide
136 Watlow Anafaze Doc. 0600-3120-2000
Control Menu
Use the Control menu to adjust heat and cool control parame-
ters, including:
•
Proportional band, integral and derivative
• Output filter
• Control hysteresis
The controller has separate PID and filter settings for heat and
cool outputs. In this section, only the heat screens are shown,
but the explanations apply to both the heat and cool parame-
ters.
If you have not set up a Series D8 controller before, or if you
do not know which values to enter, read the Tuning and Con-
trol chapter, which contains PID tuning constants and useful
starting values.
Heat/Cool Proportional Band
Enter the proportional band. A larger value yields less propor-
tional action for a given deviation from set point.
Values:
For a thermocouple or RTD input, see Table 6.11.
For a process input, 1 to the span of the input range (Input
range high
- Input range low).
Default:
50 for a thermocouple, RTD or process input.
Decimal Placement for DeviceNet:
See Decimal Placement
for Numeric Values on page 59.
DeviceNet Object:
Control (66 hex)
Table 6.11 Proportional Band Values
Type of Sensor Values in ˚F Values in ˚C
J Thermocouple 1 to 1750 1 to 972
K Thermocouple 1 to 2950 1 to 1639
T Thermocouple 1 to 1200 1 to 667
S Thermocouple 1 to 3200 1 to 1778
R Thermocouple 1 to 3210 1 to 1784
B Thermocouple 1 to 3350 1 to 1694
E Thermocouple 1 to 1776 1 to 987
RTD 0.1 to 1478.0 0.1 to 821.1
l01 Control r
Other menus b
l01 Heat prop r
band b 40 ˚F