8
EN
SLG 425I
Operating instructions
Safety light grid
Multiple interruption of the protection field during the muting cycle
This function increases the availability of the system in case of different
material qualities on one pallet.
Without the function "multiple interruption of the protection field", the
protection field is monitored during the active muting cycle and any non-
actuation (no beam interrupted) immediately cancels the muting cycle.
This error function is triggered when all active beams of the protec-
tion field are not actuated for a period of time of over 20 ms e.g. due
to an irregular loading of the material on the carrier. If the function is
activated, no shutdown is triggered if the beams are not actuated during
the muting cycle. The correct termination is realised by the configura-
tion or the muting sensors. The combination with the parameter setting
"reduced muting cycle" is not possible. These restrictions are marked in
the software and must be observed.
Activating the protection field
During a muting cycle, the entire protection field height of the SLG 425I
is bridged. This causes the risk that persons located on or beside the
material can get into the hazardous area.
The risk can be avoided by activating the remainder of the protection
field, if the conveyed material has a throughout identical height. In this
way, the presence of persons within the active protection field height is
detected!
Procedure:
Position the material onto the carrier so that the protection field of
the SLG 425I is actuated. If the material height is slightly varying, the
carrier can be slightly increased during the teaching process to avoid
false triggering. Now activate the teach sample field in the software.
The menu automatically switches to the beam view. The beams inter-
rupted by the material are represented in red. The teaching process is
terminated with a mouse click on the "teach" field. You will return to the
main menu "muting".
Changing the protection field area
If the protection field height parameterised by means of the teach
process needs to be changed, the saved value must be deleted and
reparameterised.
Procedure:
Activating the entire protection field (the previous value is deleted)
Activating the teach sample (change to beam view)
Saving the new value (teach process) with teach
Mounting:
The first light beam (near the diagnostic window) must not be
interrupted! I.e. observe the downward cable connection.
2.9.6 Saving the data
After the reconfiguration, the data to be saved are prepared by select-
ing the button "Save settings". To avoid any unintentional saving of
data, every intentional saving process must be confirmed within 10
seconds by clicking on the button "Confirm with this button within 10
seconds".
If it is not confirmed within this timeframe, the settings that were saved
before the change was made will be maintained without any change.
After the data transmission, the following confirmation is displayed. You
are simultaneously asked to save the configuration data in the form of
a text file.
This saving procedure is recommended so that configuration changes
can be reproduced at a later moment. Click the (yes) button with your
mouse to confirm.
You now can save the configuration setting onto your PC or laptop.
2.9.7 Muting applications
Arrangement of the muting sensors
MS1
MS2
MS3
MS4
Material
Muting lamp
Belt
Reflektor
Muting Sensor
SLC 425I-E/R
Reflector
Muting sensor
SLG 425I-E/R
MS1 MS2
MS3 MS4
S
E
S3
S2
S1
S1
S2
Material
Carrier
Belt
SF
= Protection field
S1
= distance of the inner MS to SF
S2
= distance between two MS
S3
= material length
MS 1
= Muting sensor 1
MS 2
= Muting sensor 2
MS 3
= Muting sensor 3
MS 4
= Muting sensor 4
S
= Transmitter
E
= Receiver
Minimum distances muting sensors
For the evaluation of the signals (MS) in the control system, a minimum
distance is required for the muting sensors.
The minimum signal length between the sensors, which are fitted
closest to the SLG 425I, must be at least 50 ms. This corresponds to a
minimum distance of 100 mm at a belt speed of 2.0 m/s.
The minimum signal length of the outer sensors must exceed 50 ms.
The signal running time between the muting sensors must be 3 sec-
onds at the most (depending on the chosen setting).