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Title : Installation, Operation & Maintenance Instructions - Digital EL Positioner
NOTE - THIS INSTRUCTION SHEET APPLIES ONLY TO NON INTRINSICALLY SAFE MODELS
WITH DIGITAL POSITIONER CIRCUITS.
IF YOUR APPLICATION IS IN AN AREA WITH AN EXPLOSION HAZARD, DO NOT USE THE
FOUR TERMINAL MODELS DESCRIBED HERE.
1. CONTENTS.
Page.
Section.
1
1. Contents.
2
2
2
2.1 Direct Mounting Units onto Kinetrol Positioner Actuators.
2
3
3
3
3
4
4
4
4
5
5
5
6
6
6
7
7-8
8
9
4.10 Changing the Direction of Movement on Loss of Signal.
9
4.11 Resetting the Feedback Pot.
9
4.12 EEPROM Checksum Error.
10
4.13 Selecting and Setting Up Non-Linear Curves.
11
4.14 Setting Optional Angle Retransmit Span and Zero Adjustments.
11
4.15 Adjustment of Position of Optional Clearcone Monitor.
12
5. Maintenance and Troubleshooting.
C.S.
Issue
F
05/10/09
F - AR 4587
Trading Estate Farnham Surrey England
KF 400 - 10/09:INDEX H\Drawing office docs. Master KF WI TD etc.\current TD sheet masters
Doc. No. TD 76
Page 1 of 12
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Summary of Contents for Kinetrol EL
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Page 1: Table Of Contents
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner NOTE – THIS INSTRUCTION SHEET APPLIES ONLY TO NON INTRINSICALLY SAFE MODELS WITH DIGITAL POSITIONER CIRCUITS. IF YOUR APPLICATION IS IN AN AREA WITH AN EXPLOSION HAZARD, DO NOT USE THE FOUR TERMINAL MODELS DESCRIBED HERE. -
Page 2: Installation
With moulded coupling versions, the Namur drive or Kinetrol square option is an insert in the coupling which can be removed by releasing the central screw. -
Page 3: Air And Electrical Connections
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 2.3 Air and Electrical Connections. NOTE: External electrical connector terminals are also identified on a label inside the lid. When the lid is removed for connection/adjustment, do not wipe grease from cover shaft seal. -
Page 4: Angle Retransmit Supply
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 2.3.4 Angle Retransmit Supply. The optional angle retransmit circuit is also loop powered, requiring 14 to 30 volts DC to drive the 4-20mA current through it – the current passed is linearly proportional to the actual positioner shaft angle. The retransmit circuit reads the same angle transducing potentiometer as the positioner circuit –... -
Page 5: Setting Travel Speed
4.3 Overview – Electronic Settings. The EL digital positioner circuit can operate to give actuator position accurately proportional to input current, or it can operate as a non-linear device accurately following one of a number of fast open, or slow open, exponential curves. Linear or non-linear, it can easily be calibrated to scale its operating line, or curve, between any two user defined points in its operating range. -
Page 6: Default Settings And Reset Procedure
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.4 Default Settings and Reset Procedure. The positioner can be reset with a complete set of default values when powered up in any operating mode, by pressing all three push buttons (UP, DOWN and SET) simultaneously. -
Page 7: Proportional Gain And Damping Settings
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.7 Proportional Gain and Damping Settings (for Smoothness and Sensitivity). Select Setup Mode, and the first parameter selected is automatically PGAIN – Proportional Gain. Press the SET push button, and the PGAIN LED will start blinking. -
Page 8: Reversing Clockwise/Anticlockwise Sense
Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.8 Low Current Point and High Current Point Settings. (continued). Table 1. Various Sets of LCP and HCP Settings Table Low Current Point High Current Point... - Page 9 Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.10 Changing the Direction of Movement on Loss of Signal. On being de-energised with air supply still fully pressurised (i.e. on disconnection of the signal, or when the signal falls below 3.5mA), the positioner moves the actuator in a direction set by the de-energised position of the servo valve.
- Page 10 Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.13 Selecting and Setting Up Non-Linear Curves. The positioner may be operated either as a linear or non-linear device. Non-linear operation is enabled by fitting a jumper link to the positioner with the positioner (and position retransmit if fitted) powered down (i.e.
- Page 11 Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 4. SETUP (continued). 4.14 Setting Optional Angle Retransmit Span and Zero Adjustments. The angle retransmit circuit is mounted directly underneath the positioner circuit, and its ZERO and SPAN preset pots are accessible using a small instrument screwdriver through the two access holes in the positioner circuit (see Figure 6).
- Page 12 Title : Installation, Operation & Maintenance Instructions – Digital EL Positioner 5. MAINTENANCE AND TROUBLESHOOTING The EL positioner is designed to be maintenance free during a long life, if it is supplied with clean, dry oil free air, and electrical signals free of noise and high voltage spikes.
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Questions and answers
WHY THE POSTIONER WHEN REACH TO 100% CANNOT RETURN TO 50% OR 75% OPENING , INSTEAD IT WILL GO BACK TO ZERO ( CLOSE ) POSITION, WE NEED TO REMOVE THE AIR SUPPLY AND PUT IT BACK TO RE-SET THE POSITIONER, WHAT IS THE PROBLEM , PLEASE ASSIST
The Kinetrol EL positioner may return to the closed position instead of holding at 50% or 75% when it reaches 100% due to incorrect proportional gain (PGAIN) and damping settings. The positioner remains active while adjusting PGAIN, and improper tuning can cause instability or overshooting. Adjusting the PGAIN value within the available range may help stabilize the positioner and achieve the desired intermediate positions.
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