Operating Instructions Chapter 7
C 4000 Standard/Advanced
8 009 861/OE59/19-11-04 © SICK AG • Industrial Safety Systems • Germany • All rights reserved
57
Commissioning
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 (Tab. 18).
The display values have the following meaning:
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 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 C 4000 off and
back on again.
$ The host in a cascaded system remains on red until all guests have been correctly
aligned.
7.3 Test notes
The purpose of the tests described below is to confirm the safety requirements specified in
the national and international rules and regulations, especially in the Machinery Directive
and the Use of Work Equipment Directive (EC Conformity).
These tests are also intended as a way of detecting whether protection is being affected by
sources of extraneous light or by other unusual environmental influences. It is therefore
essential that these tests be carried out.
7.3.1 Tests before the first commissioning
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 13.2 on
page 92).
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 13.2 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.
7.3.2 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.
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.
Tab. 18: Display values
during the alignment of
sender and receiver
Notes
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