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| Configuration |
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| Function Prompt | Selection or Range of Setting | Parameter | ||||
| Lower Display |
| Upper Display | Definition | |||
| English | Numeric | English | Numeric |
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| Code |
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| Code |
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| TIMR |
| 12 | ||
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| enabled. Reopening the switch has no | |
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| effect. | |
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| TUNE |
| 13 | INITIATE LIMIT CYCLE | |
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| closure starts the slow tuning process. The | |
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| lower display shows DoSLOW. Opening the | |
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| contact has no effect. | |
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| INIT |
| 14 | SETPOINT | |
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| closure forces the setpoint to the current PV | |
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| value. Opening the contact has no effect. | |
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| RSP |
| 15 | TO REMOTE | |
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| selects the Remote setpoint. | |
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| MNLT |
| 16 | MANUAL | |
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| transition forces the loop to Manual mode. | |
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| Opening the switch has no effect. If the | |
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| RESET key is pressed while the switch is | |
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| closed, the loop will return to Automatic | |
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| mode. | |
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| TRAK |
| 17 | OUTPUT TRACKS INPUT | |
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| closure allows Output to track Input 2. While | |
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| the switch is open, the output is in | |
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| accordance with its | |
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| When the switch is closed, the output value | |
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| (in percent) will track the Input 2 percent of | |
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| range value. When the switch is reopened, | |
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| the output will start at this last output value | |
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| and normal PID action will then take over | |
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| control. The transfer is bumpless. | |
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| STRT |
| 18 | PV | |
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| SP Ramp or SP Program at the original | |
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| selected starting Setpoint Value that existed | |
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| at the time that the SP Ramp or Program | |
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| was first started. Opening contact has no | |
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| effect. This configuration must be selected | |
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| prior to the first time the SP Ramp or | |
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| Program is placed in the RUN mode, as | |
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| otherwise the unit will not be able to capture | |
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| the initial Setpoint value. This selection | |
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| allows the unit to retain the initial Setpoint | |
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| value even if power to the unit is lost. | |
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| When the STATE selection in the SP Ramp | |
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| or Program Set Up group is set to HOLD and | |
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| the digital input contact is left closed, then | |
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| when the end of the program or ramp is | |
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| reached, the program or ramp will |
4/07 | UDC2500 Universal Digital Controller Product Manual | 71 |