Manual
3
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
WARNING
The actuator must only be installed, commissioned,
operatedandrepairedbyqualiedpersonnel.
TheactuatorisdesignedforinstallationinsidetheBray
S70 Electric Actuator, and to position an industrial
quarter-turnvalve.Itmustbeinstalledaccordingtoits
intended purpose.
TheServoProcontrolsthemovementofanelectric
actuatorthatgenerateslargemechanicalforces.
To prevent injury, installation, commissioning,
operationandmaintenancemustbecarriedoutunder
strictobservationoftheapplicablesafetyregulations.
Thespecicationsoftheexaminationcerticatevalidin
theapplicablecountrymustbeobserved.Thisincludes
theactuatorinwhichtheServoProisinstalled.
Reference is specically made here to observe the
applicable safety regulations for actuators installed
inpotentially explosive (hazardous) locations. This
includestheactuatorinwhichtheServoProisinstalled.
Verify that the main electric power supplied to the
ServoProis compliant with thespecicationsonthe
productlabelandthespecicationsintheexamination
certicatevalidintheapplicablecountry.
Avoid electrostatic discharges within hazardous
areas.
The housings and external connections on the
actuators (in which the Servo Pro is installed) are
designedforuseinpotentiallyexplosive(hazardous)
locationsandmayonlybeopenedafterallelectrical
powertotheactuatorhasbeenremoved.
CorrectandsafeoperationoftheServoProisdependent
upon proper transport, storage and installation in
additionto proper operation and maintenance.
1.3 intended use
The actuator described in this guide has been
developed,manufactured,testedanddocumentedwith
allrelevantsafetystandardstakenintoaccount.Ifthe
handlingrulesandsafetyinformationforconguration,
calibration,installationandmaintenanceareobserved,
andtheproductisusedforitsintendedpurpose,there
isnormallynodangerwithregardtomaterialdamage
orpersonnelhealth.
1.4 Warranty information
Thecontentofthisdocumentisnotpartof,anddoesnot
modify,apreviousorcurrentagreement,undertakingor
legalrelationship.BrayControlsisboundsolelybythe
contractofsale,whichalsocontainsthecompleteand
exclusivewarranty.Thecontractualwarrantyconditions
areneitherextendednorrestrictedbythisdocument.
2.0 descriPtion of oPeration
TheBraySeries70ServoProprovidescompletecontrol
andmonitoringoftheBrayS70ElectricActuator.
figure 1: s70 serVo Pro
reVision f
Thebasic functionof theServo Prois to positionthe
S70Actuator in response to a command signal from
a process controller. The process controller contains
a desired process setpoint entered by the user, and
continually monitors the process variable (such as
owrate,tanklevel,etc.)throughsometypeofsensor.
VaryingthecommandsignaltotheServoProwillcause
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