The Type electro-pneumatic positioner series is designed to work with general industrial applications. This positioner series includes several model versions to meet any end user or process requirements. Basic control positioners are the and Starting with the the positioner includes full function parameterization and advanced diagnostics.
Full function parameterization includes characterizing the reference variable, travel range, characteristic i. PID control coefficients. Advance diagnostics includes functions like status message logging, data logging, histograms travel setpoint deviation, and cycle counter , drive signals steady and hysteresis , end position trending, static characteristic testing, partial stroke testing, and full stroke testing.
By selecting and executing the "Reset 'Cycle counter histogram'" command, all diagnostic parameters and measured data of the histo- gram and the short-term monitoring as well as the 'Dynamic stress factor' are reset. Page 48 Statistical information — Drive signal diagram steady-state Requirements: — Model: Single acting — Booster: Not present — Application type: Control valve Reference test completed see section 2.
Page Drive Signal Diagram Steady-State Data are recorded in the background re- gardless of the operating mode selected. Da- steady-state ta logging does not need to be activated. Select classification for status messages. Page 52 Statistical information — Drive signal diagram hysteresis Requirements — Model: Single acting — Booster: Not present — Application type: Control valve — Reference test completed see section 2.
A single test can be performed im- teresis mediately or regular tests can be performed after the adjusted time interval has elapsed.
Variable 2. No booster is mounted on the control Based on the operating point, the test is per- valve. Page Resetting Single Status Messages Statistical information Note The results from the Statistical information test can be checked by performing a test from Tests out-of-service diagnostics if the process allows it. Section 2. If it differs by the 'Recording threshold' from the last value, the data of the new zero point are saved.
Activate tight-closing function. See section 2. Page Drive Signal Diagram Steady-State The recorded data of the drive signal y are plotted versus the valve position x in a graph Repetition. Page Analysis And Monitoring Tests 5. Page Static Characteristic Tests 5. Select test parameters. Start test. The 'Test information' status indicates A single reset of diagnostic parameters and 'Test active'.
The reference value is made up of the ming shut or moving past the end position. Select classification for status message. Start the partial stroke test. The positioner saves the measured data analysis of the last three partial stroke tests.
The analysis of the penultimate test is deleted when another test is performed. Page 83 EB EN Page 87 Tests This cancellation condition only becomes 3. Configure the cancellation conditions. Start full stroke test. The 'Test information' status indicates Additionally, the full stroke test is canceled 'Test active'. The 'Min. Page Resetting Single Status Messages Tests The positioner saves the measured data Note analysis of the last three full stroke tests.
The Changes in the diagnostic parameters listed analysis of the penultimate test is deleted below affect the test. The results of the next when another test is performed. These variables can be as- signed to device parameters as required. Page Leakage Sensor Leakage sensor 7 Leakage sensor and operating instructions of the posi- tioner. The tight-closing function has been acti- By upgrading the positioner with a leakage vated. In this case, the standard conditions tween set points 4 and 5.
Page 95 Leakage sensor Phase 2: A 0. One third of this band lies in front of the point that the valve moved to and two thirds of the band lies behind it. The band itself is subdi- vided into eleven new measured points. While the repetition test is running, the pa- 7.
Page 98 Leakage sensor the new points one after the other. After reaching a measured point and after the 'Settling time before level measuring' has elapsed, the leakage sensor measures the sound pressure level. Phase 1 successful: The sound pressure level ex- ceeded the adjusted 'Activation level' 10 dB be- tween set points 4 and 5.
Page 99 Leakage sensor Phase 3: The valve moves to the user-defined Note points valid for phase 1 one after the other. Cancel the repetition test by right-clicking This is plotted in a sound level vs. Page Leakage sensor 7.
Page Leakage sensor compared to the alarm limits. Which mean Defining parameters sound level is to be used for comparison can 1. Define alarm parameters. If the determined mean sound level exceeds the 'Alarm limit 3', the positioner generates a 'Inner leakage' message with status classi- fication selected for 'Alarm limit 3 exceed Page Short-Term Monitoring Leakage sensor 7.
Short-term monitoring provides an insight in- The last 'Level average short-term' is indicat- to short-term changes in the sound level while the valve is tightly shut. The positioner saves the mean values of the Data are recorded in the background re- sound level and valve travel in a circular buf Page Sound Level Monitoring Leakage sensor 7.
The distribution of recorded sound The measured data of the sound level moni- levels within fixed classes of valve position x toring are reset by selecting and executing is revealed. Page Type Binary input 8. Page Appendix Appendix 9 Appendix 9. Page The test was canceled by x cancellation function. F3 y cancellation The test was canceled by y cancellation function.
F4 Tolerance band The test was canceled. The x-values are outside the tolerance band. F5 Max. Page Code 77 loaded that does match the restart the positioner. If this is positioner. The valve is moved to fail-safe position.
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