A u t o t u n e
When the TUNE program is complete the upper alternating
display stops and only the process temperature is displayed. The PID values are entered automatically. The process temperature will rise to setpoint and control should be stable. If not, this may be because optimum cycle time is not automatically implemented. To set the cycle time see PROPORTIONAL
TUNE AT SETPOINT PROGRAM
Temp | Start | TUNE AT.SP |
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| Overshoot |
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| during tuning |
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Setpoint |
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| Prop band |
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| New PID |
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| Tuning | values |
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| entered | |
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| 13/4 on/off tuning | PID | |
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| cycles |
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| Time |
| (100% output) |
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Enter program mode and select | TUNE | |
OFF | ||
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And from the display select | TUNE | |
AT.SP | ||
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Exit program mode. |
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The TUNE AT SETPOINT program will now start. The upper display will alternate tune and the process temperature.
The lower display will read the setpoint value.
Note: During tuning the main setpoint (SP1) LED will flash.
When the TUNE AT SETPOINT program is complete the upper alternating display stops and only the process temperature is displayed. The PID values are entered automatically. The process temperature will rise to setpoint and control should be stable. If not, this may be because optimum cycle time
is not automatically implemented. To set the cycle time see
PROPORTIONAL
REMINDER OF INSTRUMENT ADJUSTMENTS
Press ▲ ▼ together for 3 seconds for program entry or exit. Press ▲ or ▼ to scroll through functions.
Press ✱ ▲ together or ✱ ▼ together to change levels or alter options.
Note: If in difficulty by becoming “lost” in program mode, press ▲ and ▼ together for 3 seconds to return to display mode, check the Menu Navigation summary above and try again.
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