Formula Air RVA4-NX-06 Onderhoudshandleiding - Pagina 11
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5.2 Connecting the detector
CAUTION! Before any manipulation to the rotary valve, make sure that the motor is stopped and that all electrical
connections are disconnected.
NOTE : all electrical manipulations should be performed by qualified personnel only.
DU-6 connection :
NAMUR
6. Troubleshooting
Failure
Foreign body got stuck
Rotor frozen
Rotary valve
Gear motor defective
switches off
Rotor defective
thermally
Motor protection set incorrectly
Fuse defective
Big voltage drop in power supply
Working switch is off
Motor protection switched of thermally
Conditions of operation are not met in the control
system
Rotary valve
Fuse defective
is not turning
It might be that something is stuck in the rotary valve
It might be that the motor or gearbox is broken
It might be that the motor or gearbox shaft key is
broken
Rotary valve
Foreign body got stuck
makes
Rotor/rotary valve body is defective
"screaming"
The rotor turns the wrong way
noise
Volume of material per rotation is larger than planned
Airflow opposite through the rotary valve presents
The material
proper material flow
will not pass
Settling velocity of material less than expected
the valve
The material accumulates in lumps which cannot pass
without
The material is not removed fast enough at the outlet of
accumulation
the rotary valve
Transported material is too big/bulky
Material agglutinates
Rotation disk
doesn't' turn
Rotation disk and rotor axle are no longer consolidated Tighten rotation disk on rotor axle
but rotor
does
Rotation
Cable is not connected
detector
Improperly connected cables
doesn't react
Detection distance is too big or too short
If the problem persist, contact the installer or manufacturer.
11
User manual | RVA Rotary valves
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NPN
Possible causes
M18 optical connection :
NAMUR
Proposed solutions
Remove foreign body
Thaw on the outside with hot air or water
Replace motor, or gearbox
Replace rotor
Adjust the motor protection
Replace fuse
Insure voltage consistency
Stop the installation, switch on the working
switch
See "Rotary valve switches off thermally"
Investigate why conditions are not met
Investigate that nothing is stuck in the rotor
Investigate if a part is broken and needs to
be replaced
Remove foreign body
Replace defective component
Wire the motor correctly
Reduce the volume of material feed, or
replace rotary valve
More frequent regeneration
Shorter step-interval of chain conveyor
Adjust the production machine to change
the flow of material
Check the proper functioning of the
emptying system
Use the adequate rotary valve
Make sure cables are connected
Insure proper cable connection
Verify installation distance