PPC-2000 User’s Guide
Chapter 5: LogicPro and Modbus Reference
Doc.# 30002-00 Rev 2.3
Watlow Anafaze
181
Heat/Cool Derivative
The derivative term controls the amount of influence the rate
of change of the error has on the output. A greater value yields
a greater derivative action. The derivative constant is in units
of seconds.
Spread
This is the offset between heat and cool modes when both heat
and cool outputs for a channel are used. The spread is also the
switching hysteresis for on/off channels. The spread is set in
the channel’s engineering units to a positive value less than the
sensor range.
Heat/Cool Manual Reset
Enter a value to add to the PID output calculation. When the
corresponding Integral is set to zero, the value substitutes for
the integral sum portion of the feedback calculation. In this
case, the output equals the manual reset value when the
process variable is at setpoint. When the integral value is set to
a value other than zero, the manual reset value is added to the
result of the PID calculation and, thereby, shifts the output
variable.
This parameter is set in tenths of a percent. The valid range is
0 to 1000 and corresponds to 0.0% to 100.0%: for example, a
setting of 500 corresponds to 50.0%.
Control Type
Select the function of the channel.
Table 5.19
Control Types
Value
AnaWin3 Name
Description
0
PID1
Heat and Cool outputs, only one
on at a time.
1
PID2
Heat and Cool outputs, both may
be on.
3
Reserved
n/a
4
Retransmit
Retransmit one or two analog
inputs
Summary of Contents for Anafaze PPC-2000
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Page 14: ...Table of Contents PPC 2000 User s Guide viii Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 24: ...List of Tables PPC User s Guide xviii Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 36: ...Chapter 1 Overview PPC 2000 User s Guide 12 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 112: ...Chapter 2 Hardware Installation PPC 2000 User s Guide 88 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 184: ...Chapter 4 Troubleshooting PPC 2000 User s Guide 158 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 296: ...Chapter 7 Specifications PPC 2000 User s Guide 268 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 310: ...Appendix A Modbus Protocol PPC 2000 User s Guide 282 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 311: ...Doc 30002 00 Rev 2 3 Watlow Anafaze 283 B Appendix B Declaration of Conformity...
Page 319: ...PPC 2000 User s Guide Glossary Doc 30002 00 Rev 2 3 Watlow Anafaze 291...
Page 320: ...Glossary PPC 2000 User s Guide 292 Watlow Anafaze Doc 30002 00 Rev 2 3...