Beumer stretch hood S - Troubleshooting Safety Device Trips

BEUMER stretch hood® S
Trouble shooting
BA-6090103-EN
19.08.09
91
Problem Possible cause Trouble-shooting
The operation stop relay in the
control cabinet has been switched
off.
Press the "Reset operation stop" key.
Maintenance switch The maintenance switch has
been switched off.
Switch on the maintenance switch again.
The ray of the safety photocell
has been interrupted.
Activate the reset key on the evaluator.
Ensure that nobody is in the safety area.
The safety photocell
(SLS) has been
tripped.
The safety photocell is out of
function.
• Readjust the safety photocell.
• Check the wiring.
• Activate the reset key on the evaluator.
Muting error of the
safety photocell
The safety photocell was disabled
for more than 10 minutes.
• Take any foreign matters out of the safety
area.
• Check and adjust the disabling photocells
(see the Safety chapter).
One safety bolt of the stretch
frame has not moved back.
Check the pneumatic cylinder for sluggish
movement.
Safety bolt of the
stretch frame
The limit position of a safety bolt
has not been detected.
Check the proximity switches.
Control voltage 230
V not existing
The automatic circuit breaker for
the control voltage of 230 V has
failed.
Find out the cause of the overload and eliminate
it. Then switch on the automatic circuit breaker
again.
Control voltage 24
V not existing
The automatic circuit breaker for
the control voltage of 24 V has
failed.
Find out the cause of the overload and eliminate
it. Then switch on the automatic circuit breaker
again.
Compressed air
below 4 bar
The air pressure has fallen below
4 bar.
Check the air pressure and set the correct pres-
sure. Check the pressure switch and set it, if
required.
Communication
OP-AG has failed
The connection between control
and control terminal is interrupted.
• Check the wiring.
• Check the plug-in connectors.
Package not in
position
The package is not centrally be-
low the stretch hood.
Position the package centrally under the stretch
hood by hand. The photocells on the conveyor
used for checking the position of the pallet must
be occupied.
Film tends to fall
down
Film has moved back too far. Insert the film once again (see How to insert the
film).
Film has torn The film has torn during the
stretching process.
Start the "Starting position" function, remove the
torn film and repeat the stretching process.
There is still film on
the crimping bow
A
diffuse scan has still detected
film on the crimping bows before
lifting the stretch frame.
Remove the film from the crimping bows. Reset
the fault and start the machine/system once
again.