Associated Environmental Systems SD-302, Инструкция по эксплуатации

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OPERATION
4-10
•
PID set (one of five sets of heat/cool PID parameters, pre-defined in the Operations Page)
•
Guaranteed Soak (requires the actual process value to stay within the Soak Band as set in
the System Menu).
* Ramp Rate step type is disabled for humidity enabled chambers
1
Soak
Soak maintains the set point from the previous step for a chosen time in hours, minutes and
seconds. Define the Soak step by choosing:
•
Wait for an event or process value (Wait for Events are set up in the Setup Page.)
•
Event outputs to turn on or off (if digital outputs are set up as events in the Setup Page)
•
Time
•
PID set (one of five sets of heat/cool PID parameters per channel, pre-defined in the
Operations Page)
•
Guaranteed Soak (requires the actual process value to stay within the Soak Band as set in
the System Menu).
Jump
Jump initiates another step or profile. Define the Jump step by choosing:
•
Profile to jump to
•
Step to jump to
•
Number of Repeats.
NOTE: If a power out condition occurs during a profile and more than 20 jump steps are stored
in the F4’s Profile Program memory, the controller will terminate the profile and turn off all
outputs if Continue, Hold or Terminate was selected as the Power Out action. If Profile Reset or
Go to Idle Set Point was selected, the controller will take those actions. A pop-up message will
warn of this when the 21st jump step is programmed
End
End terminates the profile in a chosen state. All profiles must have an End step. It cannot be
deleted or changed to another step type. Define the End by choosing:
•
End with Hold, Control Off, All Off or Idle end state.
Another Option: Wait For
Wait For is not a step type, but Ramp Time, Ramp Rate and Soak steps can be programmed to
wait for events and processes. This means the wait conditions must be satisfied before the time
clock and the step activity proceeds. If the step is to wait for an analog input, the actual process
value must arrive at or cross the specified value before the step proceeds. Digital inputs must
first be configured in the Setup Page as Wait for Events, with the condition to be met also
specified. Then, to wait for this digital input, you must specify On, meaning the condition as
configured in the Setup Page, or Off, meaning the opposite of that condition.