Azbil DCP31 - Motor Adjustment is Impossible

TherearetwowaysofwiringamotortotheDCP31:wiringfordirectmotorrotationandwiring
forreversemotorrotation.Whenwiredfordirectmotorrotation,themotorrotatesinclockwise
(CW


)directionwhenDCP31outputincreases.Therearetwowaysofmakingthemotorro-
tateinthereversedirection(counterclockwise:CCW)dependingonyourcontrolrequirements
(e.g.coolingcontrol):
• ByswitchingthecontroloperatingdirectionontheDCP31withthemotorwiredtothe
DCP31fordirectmotorrotationasitis,or
• BywiringthemotortotheDCP31forreversemotorrotation.
Thecontroloperatingdirection(direct/reverse)canbeswitchedonthiscontroller.Ifthemotor
iswiredtothecontrollerfordirectmotorrotation,theDCP31canbeeasilysetupforcontrolin
eitherdirection.Thismakesiteasiertoremedytroublethatmayoccurduringcontrolleropera-
tion.Forthisreason,werecommendwiringthemotortotheDCP31fordirectmotoroperation.
CW: Clockwise ( )
CCW: Counterclockwise ( )
TheDCP31isalsoprovidedwithafunction(
AL10
to
AL12
)fordetectingMFBdisconnec-
tionorshort-circuitifthemotorhasbeenwiredtothecontrollerinthewrongway.
Bythisfunction,theDCP31judgesreversedirectionwiringinthesamewayasdirectdirection
wiring,anddoesnotgenerateanalarm.Ifthesettingofvariableparameter
.-C
isleftatthe
factorysetting(“0”),motoroperationiscontinued.
Thefollowingtablessummarizethephenomenathatoccuraccordingtohowthemotorand
DCP31arewiredwhenthemotorisautomaticallyadjusted(variableparameter

.-A

Tsetting
1isinput).Motorrotationisstartedfromthefullyclosedposition(motoristurnedasfaras
possibleCCW).
Thevaluesdisplayedinthelowerdisplayinthetablesareonlyexamples.Alarmsaredisplayed
afterthemotorfullyclosesorfullyopens.
11 12 13 14 15 16
2 3 1 Y T G
14 16
Y G
CCW closedCW open
CCW closedCW open
CCW closedCW open
CCW closedCW open
Wiring for direct motor rotation
DCP31
Wiring for reverse motor rotation
DCP31
MotorMotor
15
T
24Vac
24Vac
2 3
11 1312
1
9-12
Chapter 9. MAINTENANCE & TROUBLESHOOTING
9 - 4 Motor Adjustment is Impossible