Manual

10
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
Transient Suppression
ElectromagneticInterference(EMI)canresultfrom
inductiveloads,whichcanadverselyaffectelectronic
circuits.
Appropriately sized surge suppressors should
be installed whenever inductive loads such as
transformers, relays, solenoids, motors, etc. are
operated.ThiswillhelppreventtransientEMIsurges
fromdamagingthesensitiveelectroniccircuits.
H. Applytheappropriatesupplyvoltagetothepower
input terminals.
a. VerifytheStatusLEDisashingnormaloperation
–agreen“heartbeat”consistingofarepeating
pattern one second on and one second off.
b. IftheStatusLEDisashingred,theproblemmust
beresolvedbeforeCalibrationcanbegin.Refer
totheTroubleshootingsectionofthismanualand
theStatusCodeFlashTableformoreinformation.
I. AcceptorAdjusttheDeadband-Optional
a. Thefactorydefaultismidrange–thedeadband
potentiometerismidwaybetweenfullyclockwise
andfullycounter-clockwise.Ifthisisacceptable,
nofurtheradjustmentisnecessary.
b. Rotatethedeadbandpotentiometerclockwiseto
increasethedeadband.
c. Increasing thedeadband reducesthepotential
forthe actuator tooscillate aroundthe desired
setpoint.Thisoscillationisoftencalled“hunting.”
Anactuatorrespondingtoamovingsetpointis
nothunting,butisoperatingproperly.
d. Decreasingthedeadbandallowstheactuatorto
reacha position closerto thedesired position,
aslongastheactuatordoesnotoscillate(hunt)
aroundthesetpoint.
J. AcceptorAdjusttheOpenSpeed-Optional
a. Thefactorydefaultisfullspeed–theopenspeed
potentiometer is in the fully counter-clockwise
position.Ifthisisacceptable,nofurtheradjustment
is necessary.
b. Thefullspeed(fastestspeed)oftheactuatoris
listedonthelabel.
c. Rotatetheopenspeedpotentiometerclockwise
toreducetheopeningspeedoftheactuator.
d. Reducingtheopeningspeedoftheactuatorcan
allowmoreprecisepositioningoftheactuator.
K. AcceptorAdjusttheCloseSpeed-Optional
a. Thefactorydefaultisfullspeed–theclosespeed
potentiometer is in the fully counter-clockwise
position.Ifthisisacceptable,nofurtheradjustment
is necessary.
b. Thefullspeed(fastestspeed)oftheactuatoris
listedonthelabel.
c. Rotatetheclosespeedpotentiometerclockwise
toreducetheclosingspeedoftheactuator.
d. Reducingtheclosingspeedoftheactuatorcan
allowmoreprecisepositioningoftheactuator.
notice
Reducingtheclosingspeedoftheactuatorcanalso
reducethepotentialofwaterhammerdamage.Electric
actuators are usually slow enough to avoid water
hammerevenatthefullspeedsetting–buttheuser
shouldverifythissetting.
Shielding
Signal/communication lines should be shielded.
Shieldmustbegroundedatoneendonly,preferably
atthecontroller.Groundingtheshieldatmorethan
onelocationcanintroducenoiseinthecircuitryby
forminggroundloops.
L. ConnecttheOutputSignaltotheprocesscontroller
- Optional
a. WirethepositiveconductortotheOUTPUT(+)
terminal.
b. WirethenegativeconductortotheOUTPUT(-)
terminal.
c. Selectthedesiredoutputsignalrangeusingthe
Congurationswitches4,5and6.
M. ConnecttheAnti-CondensationHeater–Optional
a. Connect the wires from theAnti-Condensation
HeatertotheHEATERterminals
b. TheHeaterratingmustmatchthevoltagerating
oftheServoPro