Rockwell Automation 442L SafeShield Safety Light Curtain Hardware - Manual (Page 31)

SafeShield Safety Light Curtain Hardware User Manual
31
➢ Switch the power supply off and then back on again and check
via the 7-segment display whether the alignment is correct after
tightening the clamping bolts (Table 18).
The display values have the following meaning:
Table 18: Display values during the alignment of sender and receiver
Note
• If the optimum alignment (= no display) persists for
longer than 2 minutes, the system automatically
deactivates the alignment mode.
• If you wish to readjust the alignment later, switch the
power supply of the SafeShield safety light curtain off and
back on again.
• The host in a cascaded system remains on red until all
guests have been correctly aligned.
Test Notes
Tests Before the First Commissioning
The purpose of the tests before the first commissioning is to
confirm the safety requirements specified in the national/
international rules and regulations, especially in the Machine and
Equipment Usage Directive (EC Conformity).
➢ Check the effectiveness of the protective device mounted to the
machine, using all selectable operating modes as specified in the
checklist in the annex (see “Checklist for the Manufacturer” on
page 46).
➢ Make sure that the operating personnel of the machine
protected by the light curtain are properly instructed by
specialist personnel before being allowed to operate the
machine. Instructing the operating personnel is the responsibility
of the machine owner.
➢ Annex Checklist for the Manufacturer of this document shows a
checklist for review by the manufacturer and OEM. Use this
checklist as a reference before commissioning the system for the
first time.
Regular Inspection of the Protective Device by
Qualified Personnel
➢ Check the system, following the inspection intervals specified in
the national rules and regulations. This procedure ensures that
any changes on the machine or manipulations of the protective
device are detected before use/re-use.
Display Meaning
The receiver cannot synchronise with the sender; the
alignment is very poor.
Some light beams do not hit the receiver.
All the light beams hit the receiver, but the alignment is still
slightly off.
No display
or
The alignment is now true; the devices must be locked in this
position. Display appears if the device is operated with
reduced resolution and/or with blanking.
➢ If any modifications have been made to the machine or the
protective device, or if the safety light curtain has been changed
or repaired, the system must be checked again as specified in the
checklist in the annex.
Daily Functional Checks of the Protective Device
The effectiveness of the protective device must be checked daily by
a specialist or by authorised personnel, using the correct test rod.
Note Always test along the complete hazardous area to be
protected, never solely at the mounting position of the
light curtain.
How to check the effectiveness and proper function of the
safety light curtain:
➢ Select the correct test rod depending on device resolution. By
means of the configuration, the entire system or individual areas
can have a physical resolution that is different to the effective
resolution, e.g. in case of blanking or reduced resolution. In this
case you must select the test rod to suit the effective resolution.
The effective resolution is described with the related function in
“Configurable Functions” on page 10.
Example: – physical resolution 14mm
– operation with resolution reduced by 1 beam
– effective resolution 22mm
Use the test rod for a resolution of 22mm.
➢ Move the test rod slowly through the protective field to be
tested, as shown in
➦ in Figure 36.
➢ Then move the test rod along the edges of the protective field,
as shown in ➨ in Figure 36. This procedure allows you to test if
the point-of-operation/reaching behind protection is functioning
properly (see “Steps for Mounting the Device” on page 24).
➢ If you use one or more mirrors, then also guide the test rod
slowly through the protective field directly in front of the
mirrors.
ATTENTION: Do not operate the
machine if the green or yellow LED is
lit during the test!
If the green or yellow LED lights up during
the test even for a short period, work must
stop at the machine. In this case the
mounting and the configuration of the safety
light curtain must be checked by specialised
personnel (see “Installation and Mounting” ).
➢ Before inserting the test rod, check that
the green LED is lit if the internal restart
interlock is deactivated and that the
yellow LED flashes (“Reset required”). If
this is not the case, make sure that this
condition is reached. The test is
otherwise meaningless.