Idiomas disponibles
Idiomas disponibles
OPERATING INSTRUCTIONS
en
4.3
Preventing unprotected areas
4.4
Response time of the device
18
O P E R A T I N G I N S T R U C T I O N S | WTT12-S
Changes to the electrical integration of the device in the machine controller and
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changes to the mechanical mounting of the device necessitate a new risk assess‐
ment. The results of this risk assessment may require the entity operating the
machine to meet the obligations of a manufacturer.
Changes to the device's configuration may impair the safety function of the device.
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The safety function of the device and the effectiveness of the protective device
must therefore be checked after any change in configuration. The person carrying
out the change is responsible for maintaining the safety function of the device and
the protective device.
The device must not be tampered with or changed.
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Improper repair of the device can lead to loss of the safety function. The protective
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device must only be repaired by the manufacturer or by someone authorized by
the manufacturer.
WARNING
Danger due to optical and electromagnetic ambient conditions!
Optical and electromagnetic ambient conditions can impair the functioning of the
device. This can result in loss of the safety functions.
•
Please note the following:
Avoid having strong electric fields in the vicinity of the device. These may be
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caused by nearby welding or induction cables, for example.
Prevent condensation on and/or contamination of the viewing window. To ensure
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the continuing, reliable safety function of the device, the viewing window must be
cleaned regularly.
WARNING
Risk of ineffectiveness of the protective device!
The objects to be protected may not be recognized in case of non-observance.
•
Make sure that the following conditions are met so that the device can fulfill its
protective function.
The device must be mounted in such a way that objects are reliably detected when
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they enter the hazardous area.
The device must be affixed so that no mirrors or other highly specular objects
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(e.g., due to gloss effects) are in the detection zone, thereby limiting the detection
capability.
The device must be affixed so that no obstacles disrupt the field of view of the
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safety sensor. Take additional protective measures if a risk arises due to unavoida‐
ble obstacles.
If objects can be present between the protective device and the hazardous point
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without being detected, check if additional protective measures (e.g., restart inter‐
lock) are required.
The optical beam path must not be disrupted, e.g. if the system is incorporated
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into paneling. No additional protective screen may be fitted.
The response times of the device must be taken into account, among other things, so
that the device can be positioned in a suitable location and the switching points can be
configured correctly.
8029123/2024/01/15 | SICK
Subject to change without notice
