Configuration
| Function Prompt |
| Selection or Range of Setting |
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| Parameter | |||
| Lower Display |
| Upper Display |
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| Definition | |||
| English | Numeric |
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| English | Numeric |
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| Code |
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| Also defined as "HEAT" Rate on Duplex | |
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| models for variations of Heat/Cool | |
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| applications. | |
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| I MIN | 103 |
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| 0.02 to 50.00 |
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| I MIN = Reset in Minutes per Repeat | |
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| 0.02 to 50.00 |
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| I RPM = Reset in Repeats per Minute | |
| I RPM |
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| Integral Time (or Reset) adjusts the | |
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| controller's output in accordance with both | ||
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| the size of the deviation | ||
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| time that it lasts. The amount of the | ||
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| corrective action depends on the value of | ||
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| Gain. The Reset adjustment is measured as | ||
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| how many times proportional action is | ||
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| repeated per minute or how many minutes | ||
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| before one repeat of the proportional action | ||
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| occurs. | ||
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| Used with control algorithm | ||
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| Also defined as "HEAT" Reset on Duplex | ||
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| models for variations of Heat/Cool | ||
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| applications. | ||
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| The selection of whether |
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| ATTENTION | |
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| Minutes per Repeat or Repeats per Minute is | |
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| used is made in the CONTRL parameters | |
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| group under the prompt MINorRPM. | |
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| MANRST | 104 |
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| MANUAL RESET is only applicable if you | ||
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| use control algorithm PD WITH MANUAL | ||||
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| Output |
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| RESET in the Algorithm Set Up group. | ||
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| Because a proportional controller will not | |
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| necessarily line out at setpoint, there will be | |
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| a deviation (offset) from setpoint. This | |
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| eliminates the offset and lets the PV line out | |
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| at setpoint. | |
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| Bias is shown on the lower |
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| ATTENTION | |
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| display. |
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| PB 2 or | 105 |
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| PB = 0.1 to 1000 % |
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| PROPORTIONAL BAND 2 or GAIN 2, | |
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| RATE 2, and RESET 2 parameters are the | ||||
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| Gain = 0.01 to |
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| same as previously described for “Heat” | |||
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| 1000 |
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| except that they refer to the cool zone tuning | ||
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| constants on duplex models or the second | |
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| set of PID constants, whichever is pertinent. | |
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| RATE2T | 106 |
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| 0.00 to 10.00 |
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| This is the same as above except that it | |
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| applies to Duplex models for the "COOL" | ||||
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| minutes |
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| zone of Heat/Cool applications or for the | ||
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| 0.08 or less = OFF |
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| second set of PID constants. | ||
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36 | UDC2500 Universal Digital Controller Product Manual | 4/07 |
