Baelz Automatic BA 373-E45 - Operational Malfunction Checklist

BA_373-E45_05_DEF_MJ_2119
33 | 36W. Baelz & Sohn GmbH & Co. · Koepffstrasse 5 · 74076 Heilbronn · Germany · www.baelz.de Seite | Page
Motorized Linear Actuator baelz 373-E45
Malfunction Cause Action required
Actuatornotworking
Powerfailure Determinethecauseandcorrectthe
problem.
Defectivefuse(incontrolcabinet) Determinethecauseandcorrectthe
problem,replacethefuse.
Linearactuatorincorrectlyconnected Re-connectasspeciedoncircuit
diagram(insidecover).
Shortcircuitcausedbyhumidity Determinethecause,drythelinear
actuator;ifnecessary,replacecover
sealandscrewsand/ortprotective
cover.
Shortcircuitcausedbyincorrectconnection Connectcorrectly.
Motorwindingdamagecaused,forexample,
byhighvoltageordefectiveelectronics
Determinecause,measurecurrent
data,comparewithnameplateand
specications,dismantlelinear
actuatorandreturnforrepair.
Voltagedropduetoconnectingcablesbeing
toolongand/orhavinginsufcientcross-
section
Measurecurrentdatawithlinear
actuator,recalculateconnecting
cablesandreplaceasnecessary.
Actuatorrunningerratically,
constantlyopeningand
closing
Poweructuationsexceedpermissible
tolerance
Improvepowersupplyconditions.
Loosecontactinsupplyline Checkandtightenconnections
(terminalblocks).
Actuatorstopsintermittently
Valvejamming Enablesmoothvalvemovement.
Actuatordoesnotmoveto
endposition.Valvefailsto
open/close
Systempressuretoohigh Adjustsystempressure.
Poorinputsignal
-interferingsignals
-signaluctuation
Checkinputsignalatlinearactuator,
correcttheproblemcausingthe
malfunction.
Linearactuatorfailstomove
ordoesnotmovecorrectly
tothepositiondenedby
theinputsignal.
Circuitboarddefective Replacecircuitboard,ifnecessary
dismantleactuatorandreturnfor
repair.
12.1 Checklist for operational malfunctions