b
W
hen defining the check, please note the following:
°
Define the type and execution of the check.
°
Define the frequency of the check.
°
Notify the machine operators of the check and instruct them accordingly.
The following checks are often defined in connection with a protective device:
•
Check during commissioning and modifications
•
Regular check
Check during commissioning and modifications
T
he test is intended to ensure that the hazardous area is monitored by the protective
device and that unprotected access to the hazardous area is prevented.
The following points are often helpful for the definition of the check:
•
Does the check have to be completed by quality safety personnel?
•
Can the thorough check be completed by personnel specially qualified and autho‐
rized to do so?
•
Does the check have to be documented in a traceable manner?
•
Can the check be carried out according to a check list (see "Checklist for initial
commissioning and commissioning", page 65)?
•
Do the machine operators know the function of the protective device?
•
Have the machine operators been trained to work on the machine?
•
Have the machine operators been notified about modifications on the machine?
•
Does the hazardous area to be secured have to be checked with a test rod, see
"Test rod check", page 24?
b
Define all guidelines for the check.
Regular check
T
he test is intended to ensure that the hazardous area is monitored by the protective
device and that unprotected access to the hazardous area is prevented.
The following points are often helpful for the definition of the check:
•
Which check must be carried out and how is it carried out?
°
Test rod check, page 24
°
Visual check of the machine and the protective device, page 26
•
How often does the check have to be carried out?
•
Do the machine operators have to be notified of the check and do they need to be
instructed accordingly?
b
Define all guidelines for the check.
4.5.1 Test rod check
Overview
T
he light beam is covered with an opaque test rod (minimum diameter of 30 mm).
When the light beam is covered, the OSSD LED on the receiver must light up red. The
check is carried out for each light beam and at multiple positions between the sender
and the receiver.
4 P
ROJECT PLANNING
24
O P E R A T I N G I N S T R U C T I O N S | deTem4 Core 8020453/14Q7/2020-04-27 | SICK
Subject to change without notice
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