Manual

6
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
2.3 conf igur ati on sWitc H fu nct i on
d
escriPtion
Command Signal Input –thesignalfromtheprocess
controllerthatrepresentsthedesiredactuatorposition.
Feedback Output Signal –thesignalfromtheServo
Prothatrepresentsthecurrentactuatorposition.
Forward Acting –theactuatorwillmovetowardtheopen
directionwithanincreaseincommandsignal.
Reverse Acting–theactuatorwillmovetowardtheclose
directionwithanincreaseincommandsignal.
Fail Enable –theactuatorwillmovetoapositionselected
bytheuseruponlossofcommandsignal.
NOTICE
Thecommandsignalisconsideredlostwhenitisbelow
thelowlimitoftheselectedrange.
Thecommandsignalcannotbeoutofrangewhen0-5
VDCor0-10VDCareselectedbecause0VDCisa
valid value.
Thefailpositionwillnotbereachedifcommandsignal
ANDelectricpowerarebothremovedfromtheServo
Pro. Electric power must be maintained in order to
movethemotorintheactuator.
Fail in Last Position –Theactuatorwillremaininthe
positionitreachedwhenthecommandsignalwaslost.
Fail Close –Theactuatorwillmovetothefullyclosed
positionwhenthecommandsignalislost.
Fail Open –The actuatorwill move to the fully open
positionwhenthecommandsignalislost.
Torque Switch Enable –Theactuatorwillrespondtothe
optionalswitchesconnectedtothetorquelimitinputs.If
theopentorqueswitchisactivated(theswitchhasbeen
trippedbythetorqueswitchcam)theactuatorwillnot
moveanyclosertothefullyopenposition.Iftheclose
torqueswitchisactivated(theswitchhasbeentrippedby
theclosetorqueswitchcam)theactuatorwillnotmove
anyclosertothefullyclosedposition.
NOTICE
IftheTorqueSwitchEnabledoptionisselected,the
actuator must be equipped with properly set torque
switcheswiredtotheServoPro.Theabsenceofproperly
settorqueswitcheswillpreventactuatormovementin
one,orboth,directions.
Torque Switch Disable –theServoProwillnotrespond
toanyswitchesconnectedtotheTorqueSwitchinputs.
This option should be used when the optional torque
switchesarenotinstalledintheactuator.
2.4 factory default settings for serVo
P
ro reV f
Unlessspeciedbytheuser,thecongurationswitches
on the Servo Pro Revision F are set to the following
defaultpositionswhenshippedfromtheBrayfactory:
Switch1–Off
Switch2–Off
Switch3-Off
Switch4-Off
Switch5-On
Switch6-Off
Switch7-Off
Switch8-On
Switch9-Off
Switch10-On
The factory default settings will place the Servo Pro
RevisionFinthefollowingconguration:
Command Signal -4-20mADC
Feedback Output Signal –4-20mADC
Forward Acting
Fail Enable
Fail Closed
Torque Switch Disable