Manual

3
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
WARNING
The actuator must only be installed, commissioned,
operatedandrepairedbyqualiedpersonnel.
TheactuatorisdesignedforinstallationinsidetheBray
S70 Electric Actuator, and to position an industrial
quarter-turnvalve.Itmustbeinstalledaccordingtoits
intended purpose.
TheServoProcontrolsthemovementofanelectric
actuatorthatgenerateslargemechanicalforces.
To prevent injury, installation, commissioning,
operationandmaintenancemustbecarriedoutunder
strictobservationoftheapplicablesafetyregulations.
Thespecicationsoftheexaminationcerticatevalidin
theapplicablecountrymustbeobserved.Thisincludes
theactuatorinwhichtheServoProisinstalled.
Reference is specically made here to observe the
applicable safety regulations for actuators installed
inpotentially explosive (hazardous) locations. This
includestheactuatorinwhichtheServoProisinstalled.
Verify that the main electric power supplied to the
ServoProis compliant with thespecicationsonthe
productlabelandthespecicationsintheexamination
certicatevalidintheapplicablecountry.
Avoid electrostatic discharges within hazardous
areas.
The housings and external connections on the
actuators (in which the Servo Pro is installed) are
designedforuseinpotentiallyexplosive(hazardous)
locationsandmayonlybeopenedafterallelectrical
powertotheactuatorhasbeenremoved.
CorrectandsafeoperationoftheServoProisdependent
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,testedanddocumentedwith
allrelevantsafetystandardstakenintoaccount.Ifthe
handlingrulesandsafetyinformationforconguration,
calibration,installationandmaintenanceareobserved,
andtheproductisusedforitsintendedpurpose,there
isnormallynodangerwithregardtomaterialdamage
orpersonnelhealth.
1.4 Warranty information
Thecontentofthisdocumentisnotpartof,anddoesnot
modify,apreviousorcurrentagreement,undertakingor
legalrelationship.BrayControlsisboundsolelybythe
contractofsale,whichalsocontainsthecompleteand
exclusivewarranty.Thecontractualwarrantyconditions
areneitherextendednorrestrictedbythisdocument.
2.0 descriPtion of oPeration
TheBraySeries70ServoProprovidescompletecontrol
andmonitoringoftheBrayS70ElectricActuator.
figure 1: s70 serVo Pro
reVision f
Thebasic functionof theServo Prois to positionthe
S70Actuator 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
owrate,tanklevel,etc.)throughsometypeofsensor.
VaryingthecommandsignaltotheServoProwillcause
!