Instruction Manual
Model MicroCEM
PID Setting | Description | |
| Proportional Gain. This parameter is set by using typical PID | |
PSetting | tuning methods. The P setting is mandatory and is the first pa- | |
rameter to adjust. It provides a command directly proportional to | ||
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| the error. | |
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| Integral Gain. This parameter is set by using typical PID tuning | |
ISetting | methods. The I setting is optional and is used to make small ad- | |
justments to correct a small error which persists for a period of | ||
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| time. | |
| Derivative Gain. This parameter is set by using typical PID tuning | |
| methods. The D setting is optional. It is used to adjust the com- | |
DSetting | mand based on change in error. It can be used to reduce over- | |
| shoot, which typically occurs when the P settings is used by itself. | |
| This parameter tends to amplify any noise present in the input. | |
| Should be set to the typical | |
| °C/second when the heater/cooler is operated at 100% power. | |
MaxSpeedSetting | Increasing this value effectively decreases the Proportional, Inte- | |
| gral and Derivative gain. Decreasing this value effectively in- | |
| creases the Proportional, Integral and Derivative gain. | |
| Integral Reset Error. Setting used to reset Integral value when | |
ResetIntegralError | error is larger than this value. This parameter is used to prevent | |
the integral value from building up while the error is large and | ||
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| then causing overshoot when the setpoint is reached. | |
IntegralMaxPercent | Maximum percent output power that can be accumulated by the | |
Integral component. | ||
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IntegralMinPercent | Minimum percent output power that can be accumulated by the | |
Integral component. | ||
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MaxPercent | Maximum zone output power in percent | |
MinPercent | Minimum zone output power in percent | |
MinAlternationPercent | Minimum | |
SetPoint | This is the temperature setpoint, in degrees Celsius, for this tem- | |
perature control loop. | ||
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LowTempLimit | If the temperature (°C) is below this value during the MicroCEM | |
process (not including the | ||
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HighTempLimit | If the temperature (°C) is above this value during the MicroCEM | |
process (not including the | ||
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| If the current reading is below the | |
MaxOffCurrent | heater is turned off, the heater has failed with a Heater Control | |
| failure. | |
| If the current reading is below the | |
MinOnCurrent | heater is turned on, the heater has failed with a Heater Burnout | |
| status. |
Table
Operation | Rosemount Analytical Inc. A Division of Emerson Process Management |