Bray 6A series User manual

This document is not comprehensive and is intended to help first time users become familiar with the Bray SA
Electropneumatic Positioner For more detailed information the Installation Operation and Maintenance Manual
is available on the Bray website
SERIES A
ELECTROPNEUMATIC POSITIONER
QUICK START GUIDE
BRAY.COM THE HIGH PERFORMANCE COMPANY

SERIES 6A ELECTROPNEUMATIC POSITIONER
QUICK START GUIDE
2 of 12© 2021 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
TABLE OF CONTENTS
1.0 Mounting and Setup 3
2.0 Calibration 5
4.0 Positioner Optimization 10

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QUICK START GUIDE
3 of 12© 2021 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
1.0 MOUNTING AND SETUP
Step  Place the mounting bracket on the
underside of the positioner Tighten the
mounting bolts and lock washers
Step  Position the output shaft of the
positioner so that the flat () portion is
facing upwards

Step  Insert the coupler over the output shaft
Ensure proper alignment of the coupler’s
set screw with the flat side of the shaft
before tightening the set screw
Step  Position the yellow indicator on the base
of the coupler

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QUICK START GUIDE
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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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 MOUNTING AND SETUP (Continued)
Step  Position the positioner on the actuator
and tighten the mounting screws
Step  Insert the pneumatic fittings on the
positioner and actuator before inserting
tubing into the outputs of the positioner
to the inputs of the actuator
Note Supply air will be routed to Y in
the event of a signal loss (fail condition)
Single acting actuators release air from
Y upon loss of signal
For double-acting actuators make sure
Y is connected to the desired port for
fail position
Step  Position the yellow ‘Transmission Ratio
Selector’ tab () in the  position by
pushing it away from the labeled side of
the device
Step  Adjust the yellow clutch wheel () on the
underside of the terminals using a  mm
wide screwdriver to the  position



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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
2.0 CALIBRATION
Step  Power on the unit with a  to  mA signal
Note Make sure signal does not order turn-
o during calibration process
Step  Press the Menu Button
for  seconds to enter into Configuration
mode
Step  Once in Configuration mode parameter  is
displayed in the bottom left hand corner of
the positioner screen Parameter  allows
the user to select the type of actuator
being paired with the device
Step  Use the Up Button to scroll through the
available options (in ascending order) until
you reach “turn” This option is for quarter
turn actuators
Note To scroll through parameters in
descending order hold down the
Menu Button while using the Down
Button to scroll through the parameters
until you find “turn”

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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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 CALIBRATION (continued)
Step  Press the Menu Button once to
reach parameter  Select 
Step  Press the Menu Button to scroll to
parameter 
Note Parameter  is skipped for quarter-
turn actuators
Step  Hold down the Up Button until
calibration begins ( seconds) then
release The device will now progress
through  “RUNS” completing a series
of checks For more information on the
calibration please refer to the product
manual
Note The calibration routine can take up
to  minutes
Step a Note If an error is displayed on your
positioner during Run  the lower
tolerance (down tolerance) of the
adjustment wheel has been exceeded
(If no errors are displayed skip ahead to
step )

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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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 CALIBRATION (continued)
Step b Adjust the gray friction clutch adjustment
wheel until the screen displays a  in the
top right hand corner
If the clutch wheel is dicult to turn
ensure that
 The yellow locking wheel under the
friction clutch adjustment wheel is not
locked (rotate right)
 The friction clutch adjustment wheel
is not near the end of travel at either
the high or low end (If so rotate in the
opposite direction to allow enough
rotation to complete a successful
calibration)
Step c Once the down tolerance error has been
corrected the middle character of the
message line will change to an ‘O’
Step d To continue calibration press the
Up Button once and release
Step  Upon successful completion of
calibration the status line will display
“FINISH”
Press the Menu Button once to exit

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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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 CALIBRATION (continued)
Step  Step  Press the Menu Button for
 seconds The device will now be in
‘MANUAL’ mode
Step  Step  Use the or buttons to
manually close or open the valve to
ensure that the desired travel limits are
being attained
Step  Step  Toggle between Manual (“MAN”)
and ‘AUTO’ mode by pressing the
Menu Button 
Step  Step  While in ‘AUTO’ mode test the
responsiveness of the device by varying
the command signal from  mA to
 mA

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9 of 12© 2021 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
 CALIBRATION (continued)
Step  Upon completion of calibration insert
a  mm wide screwdriver into the slot
located under the adjustment wheel and
turn the wheel left until you can feel that
it clicks in This helps prevent the clutch
wheel from slipping during actuation
To optimize performance the following measures can be applied if the positioner is too
responsive and does not reach end of travel smoothly
Step  While in configuration mode scroll to
parameter  (DEBA)
Step  Increase the deadband to yield the
desired responsiveness by pressing the
Up Button
(Default is  Bray recommended
value is  to )

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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
4.0 POSITIONER OPTIMIZATION
Step  This is an example of screen with
increased deadband responsiveness
Step  Use the Menu Button to scroll to
parameter  (YCLS) This setting allows
users to assign a position where the A
will default to full open or close Select
‘uP do’ by pressing the Up Button
 uP – Only Upper Limit (Full Open)
 do – Only Lower limit (Tight Close)
 uP do – Upper and Lower limits set
Step  Use the Menu Button to scroll to
parameter  (YCDO tight close)
Step  Change the parameter value to the
desired lower limit for tight closing
Example If the positioner is at  or
lower the actuator automatically goes to
full close

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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
 POSITIONER OPTIMIZATION (Continued)
Step  Use the Menu Button to scroll to
parameter  (YCUP full open)
Step  Change the parameter to the desired
upper limit for full open
Example If the positioner is at  or
higher the actuator provides full force
open
Step  Exit Configuration mode by pressing the
Menu Button for  seconds The
device will be in Manual Mode (“MAN’)
Press the Menu Button once to
leave the positioner in AUTO mode

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selection for your intended application The right to change or modify product design or
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