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IM-S51-07 CTLS Issue 1
SP7-10, SP7-11, SP7-12 and SP7-20, SP7-21, SP7-22 Parameterization
With this parameter you can leave the configuration level.The positioner returns to the operating level. Here you can either save data
in the non-volatile memory or discard all previously made changes (also the changes in other parameter groups).
To leave the configuration level (with or without saving), press and hold ENTER until the countdown from 3 to 0 is finished.
The active saving process is indicated by the message NV_SAVE. After saving a plausibility check is executed.
If an error occurs during the check or while saving, the data cannot be saved and an error message is displayed instead (see Chapter
"Error codes").
NV_SAVE Saves settings in the non-volatile memory
CANCEL Discards all changes made since the last permanent save operation
3.11.10 DB_CALC – Dead-band determination
In standard automatic adjustment, the algorithm determines the dead band as well as the end positions and control parameters. In
some applications, you may need to perform a new automatic adjustment after installation in the system, but to leave the dead band
at a preset value. DB_CALC offers the following setting options:
— ON (automatic adjustment with dead band determination)
— OFF (automatic adjustment without dead band determination)
3.11.11 LEAK_SEN – Leakage sensitivity
Determination of a possible leakage between the output positioner and the pneumatic actuator. If the valve position moves out of the
dead zone (dead band) in the same direction seven times in succession within a defined time range, there is a high probability of a
leakage in the connecting lines between the positioner and the pneumatic actuator. LEAK_SEN enables you to define the time range
within which the valve may leave the dead band a maximum of seven times in succession before an alarm is generated. You can
choose a time range of between 1 and 7200 seconds.
3.11.12 CLOSE_UP - Position monitoring
This parameter specifies a range around the deadband. If the valve reaches the CLOSE_UP range within a time < positioning
timeout, the positioner does not send an alarm. If this time is > positioning timeout, the positioner generates an alarm.
CLOSE_UP is only used to influence the alarm behaviour.
The control process continues until the valve has reached the dead band.
The default-value is 0.30%; the valuation is 0.00 – 100.00 %.
Changes can be done in 0.01% steps.
3.11.13 EXIT – Return to operating level
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