Watlow F4T • 116 • Chapter 5 Function Reference
Range: 3 to 99,999 ºF or units
1 to 55,555 ºC
Peltier Delay
Set a delay for switching between heating and cooling. This applies to both heat and cool Al-
gorithms set for PID control.
Range: 0.0 to 5.0 seconds
Cool Output Curve
Choose a cool output curve to set the responsiveness of the system. A nonlinear output curve
may improve performance when the system’s response is nonlinear. With the nonlinear curves,
a given change in the PID calculation at the lower part of the output range yields a smaller
change in the actual output level than a linear output provides.
This feature is used in applications such as cooling of plastic extruders where a small amount
of water cooling has a large effect initially, but diminishing returns as water flow increases.
This parameter applies only when Cool Algorithm is set to PID.
Options:
• Off: the calculated PID value is applied linearly to the output
• Non-linear Curve 1: somewhat non-linear response such as with oil coolant
• Non-linear Curve 2: greater non-linear response such as with water coolant
Profile End Action
Select what the control loop does when a profile ends without an End Step programmed with-
in the profile. If a profile has an End Step, it will always take precedence over this setting.
Options:
• User: controls at the current Set Point setting prior to execution of the profile.
• Off: control mode set to off
• Hold: maintain the last set point within the profile
To Next Page
Loading...
Need help?
General
