
REV. 1 MC
13616 Hempstead Road · Houston, Texas 77040 · (713) 460-5200 · (800) 460-5200
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Overview
The Gaumer MC-2438, 2538, and 2838 are microprocessor based fuzzy logic controllers. While the
algorithms used by the control are quite complicated, setup is quite simple. In fact you can use the controller
right out of the box setting only the set point temperature and then letting the control auto tune. This is
sufficient for the vast majority of applications.
The parameters are set through 4 levels of menus. Most applications should be able to be setup using only
the first level. It is extremely unusual to have to enter the third and fourth level. Once the control is setup,
the operator should be able to make any adjustments at level 1. The functions accessed at each level are as
follows:
First Level
•Setpoint Temperature
•Output Percentage
•Auto Tuning
•Alarm 1 Setpoint
•Alarm 2 Setpoint (where applicable)
•Alarm 3 Setpoint (where applicable)
Second Level
• Proportional Band
• Integral Time
• Derivative Time
• Dead-band Time
• Auto Tuning Offset
• Proportional Cycle
• Hysterisis
• Proportional Band (For Output #2 if installed)
• Integral Time (For Output #2 if installed)
• Derivative Time (For Output #2 if installed)
• Proportional Cycle (For Output #2 if installed)
• Hysteresis (For Output #2 if installed)
• Output 1 Gap (For Output #2 if installed)
• Output 2 Gap (For Output #2 if installed)
• Function Lock
Third Level
• Input Selection and Range
• Analog Zero Set
• Analog Span Set
• Decimal Point Position
• Lower Setpoint Limit
• Upper Setpoint Limit
• Analog Zero Set (For Output #2 if installed)
• Analog Span Set (For Output #2 if installed)
• Alarm Mode
• Alarm Time
• Alarm Mode (For Alarm #2, if installed)
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