Manual

11
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
3.1 calibration Procedure
ThecalibrationprocedureshouldberunwhentheServo
Proisrstcommissioned,andanytimethatasubsequent
changeismadetoeithertheServoProCongurationor
theactuatorinwhichtheServoProisinstalled.
1. Engage the actuator handwheel by pulling it
outward, and manually move the actuator to the
mid-travel position.
2. Disengagetheactuatorhandwheelbypushingitin
ward.
3. PresstheCalibrationbutton,holditforaminimum
of2seconds,andreleasethebutton.
4. The ServoProshouldenterthe Calibration routine
and move the actuator toward the fully closed
position.After reaching the fully closed position, it
will reverse travel and move toward the fully open
position.After reaching the fully open position, the
ServoProwillwritethecalibrationvaluetomemory,
returntonormaloperation,andmovetheactuatorto
thepositionthatmatchesthecommandinputsignal.
5. Aftera successfulcalibration, theStatus LEDwill
returntothenormalheartbeatpattern.
6. Afteranunsuccessfulcalibrationattempt,theStatus
LEDwillashanerrorcodeof“red-green-red-green.”
Formoreinformationontheerrorcodes,refertothe
StatusLEDFlashCodeTable.Correcttheerrorand
runthecalibrationprocedureagain.
4.0 diagnostic indicators
TheServoProhasseveraldiagnosticindicators,such
asthePowerLED,MotorOpenLED,MotorCloseLED,
andStatusLED.TheServoProisconstantlyperforming
self-diagnostics. These indicators assist the user in
conrming proper operation of the Servo Pro, and
troubleshootingvariousoperationalproblems.
4.1 PoWer led
The Power LED will light solid green when the proper
electricalpowerissuppliedtotheServoPropowerterminals.
IfthePowerLEDisnotsolidgreen,thenthepowersupply
isnotworkingandtheServoProwillnotfunction.
ThefusemustbeinstalledforthePowerLEDtolight.
4.2 motor PoWer leds
TherearetwoMotorPowerLEDs.
TheMotorOpenLEDwilllightgreenwhenthe Servo
Pro ispowering the motor in theopen direction.This
occurswhenthecurrentactuatorpositionisbelowthe
commandsignal(desiredactuatorposition.)Theactuator
shouldbemovingintheopendirectionwhentheMotor
OpenLEDislit.
TheMotorCloseLEDwilllightredwhentheServoPro
ispoweringthemotorintheclosedirection.Thisoccurs
whenthecurrentactuatorpositionisabovethecommand
signal(desiredactuatorposition.)Theactuatorshould
bemovinginthecloseddirectionwhentheMotorClose
LEDislit.
4.3 status led
TheStatusLEDisabi-colorLED(red/green)thatindicates
variousoperationalconditionsoftheServoPro.TheStatus
LEDashesthegreen“heartbeat”pattern–arepeating
cycle of one second ONfollowedbyonesecondOFF –
to indicate normal operation.
Any ashing pattern other than the green heartbeat
indicateseitheranadvisoryconditionoranerrorcondition.
Advisoryconditionsarecombinationsofgreenashes.
TheseindicatetheServoProisoperating,butitmaynot
beinanoptimalcondition.AnexamplewouldbeReverse
Actingmodeselected.Theusermaydesirethiscondition,
butitmayalsobeanoversightthatrequirescorrection.
Errorconditionsarecombinationsofredashes.These
indicate the Servo Pro is not operating properly. An
examplewouldbehandwheelengaged.TheServoPro
cannotmovetheactuatormotorineitherdirectionwhen
thehandwheelisengaged.
notice
AnyStatusLEDFlashCodewithgreenashesissimply
anadvisorythatshouldbenotedandmay,ormaynot,
require adjustment. Actuators can operate properly
whiletheStatusLEDisashinggreen.
AnyStatusLEDFlashCodethatcontainsredashes
isanerrorthatmustbecorrectedbeforetheactuator
can operate properly.