Burkert Type 3501 - Handbuch (Seite 16)

Rotary actuator
14
Fault finding
Problem Test Fault Remedy
Motor does not run Check connection. Is – Motor without voltage – Fix connection
– no humming voltage applied to – Power supply not in order
circuit board? – Thermal circuit
Motor overheated? breakerhas switched – Allow motor to cool,
off motor due to avoid further overloading
overheating.
Are several actuators – Limit switch welded – Drive acuators
connected in parallel? separately or via relay
– Capacitor defective – Replace capacitor
and limit switch
– Motor humming Is it possible to turn – Gear or motor – Return actuator to
the actuator by blocked factory
emergency manualr
operation or only with
great difficulty?
Fuse comes into Is the drive connected – Short circuit caused by – Fix connection
action. properly? No. connection fault. Return actuator to
Resistance of Winding defective. factory.
windings outside
tolerance range.
1)
Motor runs on – Tripping cams do – Limit switch lug or – Exchange circuit board
not operate limit switch block bent with limit switch block
– Limit switch not – Limit switch – Exchange circuit board
working (audibly) mechanically defective with limit switch block
– Microswitch operates – Set tripping cams
too late according to instructions
Wrong direction of Compare connections – Connections - Connect according to
rotation with circuit diagram interchanged circuit diagram.
(3-position regulator)
Potentiometer Does the potentiometer – Defective clutch. - Replace clutch (if no
doesn't follow clutch slip? Yes. success also poten-
the movement tiometer)
(completely) Does the potentio- – Defective potentio- – Replace potenti-
meteraxis rotate? No. meter ometer.
External control Does the potentio- – Outer control or – Fix outer circuit
doesn't work via meter voltage follow relay circuit defective
potentiometer the movement? Yes.
No.
– See "Potentiometer
doesn't follow".
1) 230 V 184–202
Ω 110 V 35,2–38,8 Ω
Resistance measurement on plug 3001-186 from middle contact.