Bray 6A series - User Manual

Other manuals for Bray 6A series

Advanced Setup Guide52 pages

Quick Start Guide12 pages

Questions and Answers

K
Kimberly Wagner MDAug 19, 2025
What to do if Bray Valve Positioners are not initialized?
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  James ZunigaSep 12, 2025
  If your Bray Valve Positioners are not initialized, start the initialization process.
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Howard RochaAug 21, 2025
Why Bray Valve Positioners measuring range was exceeded?
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  Cesar MartinezAug 21, 2025
  If the measuring range of your Bray Valve Positioners was exceeded, it might be because the transmission ratio selector or the effective lever arm are not adjusted as per the actuator travel. To fix this, switch the transmission ratio selector to 90°, especially if you're using part-turn actuators. Also, adjust the effective lever length of linear actuators according to the measuring range.
C
carlrossAug 23, 2025
What to do if the actuator does not move on my Bray 6A?
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  Matthew HolmesAug 25, 2025
  If your Bray Valve Positioner's actuator isn't moving, ensure the supply air pressure is greater than 20 psi, as the pressure may be lower than 1.4 bar.
L
Laura BarnettAug 26, 2025
What to do if Bray Valve Positioners remains in RUN 5?
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  Cynthia GarciaAug 26, 2025
  If your Bray Valve Positioner remains in “RUN 5” and doesn't proceed to “FINISH” after 5 minutes, it could be due to play in the positioner-actuator-control valve system. For part-turn actuators, check the firmness of the grub screw on the coupling wheel. For linear actuators, check the lever's firmness on the positioning shaft. Eliminate any play between the actuator and the control valve.
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Alexander MillerAug 27, 2025
Why is my Bray 6A Valve Positioners oscillating in automatic or manual mode?
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  alyssabergerAug 28, 2025
  If, in stationary automatic mode or manual mode, both piezo valves on your Bray Valve Positioners continually switch alternately, causing the actuator to oscillate, this could be due to sticking friction in the control valve's packing gland or an overly large actuator. Reduce the friction or increase the positioner's dead zone (parameter ”dEbA”) until the oscillation ceases. Alternatively, there could be looseness in the positioner/actuator/control valve system. Check the firm seating of the set screw on the coupling wheel for part-turn actuators, or the lever on the positioner shaft for linear actuators. Correct any other play between the actuator and the control valve.
E
esimpsonAug 30, 2025
What causes a piezo valve to constantly activate in Bray 6A Valve Positioners?
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  Carlos GomezAug 30, 2025
  If a piezo valve activates constantly in the stationary automatic mode or manual mode on your Bray Valve Positioners, there may be pneumatic leakage in the positioner-actuator system. Initiate the leakage test in “RUN3” (initialization) to check and rectify any leakage in the actuator or feed line. This issue could also be caused by dirt in the pneumatic block, which requires cleaning or replacement of the built-in fine screens.
C
Caleb SinghSep 1, 2025
What to do if Bray Valve Positioners remains in RUN 3?
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  tiffanykingSep 1, 2025
  If your Bray Valve Positioner remains in “RUN 3”, it means that the actuator actuating time is too high. To resolve this, fully open the restrictor and/or set the pressure PZ (1) to the highest permissible value. If necessary, use a booster.
E
Eric CaldwellSep 3, 2025
What to do if Bray 6A Valve Positioners remains in RUN 2?
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  James HallSep 3, 2025
  If your Bray Valve Positioner remains in “RUN 2”, the transmission ratio selector and parameter 2 may not match the actuator type, or the stroke on the lever might be incorrectly set, or the piezo valve may not activate. Check the settings, referring to the leaflet “Device view (7)” as well as parameters 2 and 3. Also, verify the stroke setting on the lever using table 2.
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wallsnatashaSep 5, 2025
Why does the CPU test blink on my Bray 6A?
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  Christopher MillerSep 5, 2025
  If the “CPU test” blinks on the digital display of your Bray Valve Positioners approximately every two seconds and the piezo valve does not activate, it is likely due to water in the pneumatic block from wet compressed air. If caught early, this can be fixed by operating with dry air, possibly in a temperature cabinet at 50 to 70°C. Otherwise, repair is required.
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Mr. Edwin CookSep 7, 2025
How to fix if my Bray 6A doesn’t move control valve to the stop?
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  stephaniehuntSep 7, 2025
  If your Bray Valve Positioner doesn’t move the control valve to the stop (at 20 mA), the supply pressure might be too low, or the load on the feeding controller or system output is too low. Increase the supply pressure, insert a ballast converter, and select 3/4-wire mode.