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Next, select ON in the OUTPUT ON/OFF menu key in the CONFIGURE section. Then click SEND BOX VALUES in the
CONFIGURE section. The controller will begin to send output power to the TE device.
5.3.0
Enter the following parameters:
PROPORTIONAL BANDWIDTH: 20
INTEGRAL GAIN: 0
DERIVATIVE GAIN: 0
NOTE: whenever a tuning parameter is entered in the box, you must click the SEND BOX VALUES button in the
TUNING section in order to download the values to the controller.
5.3.1
Click the SAMPLE button to monitor the actual temperature being sensed. The sensed temperature will be shown
in the TEMP box.
5.3.2
Allow the TE device to reach steady state. Incrementally reduce the bandwidth setting, allowing the controller to
reach steady-state at each increment, until the system just begins to oscillate. At this point, the bandwidth is too
small. Note the bandwidth setting that just caused the system to oscillate and note the time period of oscillation
in minutes. The time period will be used later for determining the integral gain and derivative gain settings.
NOTE: The system temperature will likely begin to oscillate before reaching the set point temperature. This is
normal.
5.3.3
Multiply the current proportional bandwidth setting by 2.2, and enter it as your new PROPOROTIONAL
BANDWIDTH setting. Be sure to click “SEND BOX VALUES” after entering new parameters. The system should
come into control and maintain a steady temperature near the set point.
