OPERATING THE PROCESS CONTROLLER (S/HART) Step
- Process tune ready to start
You are in the process operating level in the AUTOMATIC mode. Make ready process tune by the following operating procedure:
Make ready P.TUNE (process tune)
process tune ready
and
process tune not ready
The next setpoint step entered via the keypad (see Step ) is now used for parameter optimization. The setpoint SP is set equal to the actual sensor value PV and is the starting value for the optimization step. Adaptation / modification of this starting value is described in Step
.
Readiness of process tune is symbolized in the display by three horizontal bars behind the flashing setpoint symbol SP .
Step
- Adaptation of the starting value for the optimization step (optional)
If required you can carry out an adaptation of the starting value for the optimization step. Switch the device to the MANUAL mode. By pressing the arrow keys, open or close the process valve, which causes a corresponding change in the process value PV. As soon as the desired starting value is set, switch the device back to the AUTOMATIC mode.
Step
- Initiate process tune
You are in the process operating level in the AUTOMATIC mode. Process tune is now initiated by entering via the keypad a setpoint step. This step should take place in the future working range of the process control system. The procedure is as follows:
or >3s
With the display SP (setpoint) set, press one of the arrow keys for longer than 3 seconds to activate the mode for changing the process setpoint. After release of the key, the first digit of the process setpoint flashes.
or
Set the value of the flashing digit of the process setpoint SP.
Confirm the value set and move to the next digit. After confirmation of the fourth digit, the process setpoint set is stored as the end value of the process setpoint step.
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