SF4C Safety light curtain
3.9 Override Function
81
3.9 Override Function
This function enables you to override the machine stop signal and to enter the muting state. It is
used to restart the system smoothly when the sequence of operations is incorrect or in case of
power loss.
If this function is used, it forcibly deactivates the safety function of the light curtain. The override
function is used when the muting function is active, something happened which stopped the
operation (as described above) and the operation then needs to be restarted again with the
control output (OSSD 1, OSSD 2) in OFF status (e.g. there is still some material in the detection
field of this device which needs to be moved out of the detection field before the safety function
can be reactivated).
!
DANGER!
Incorrect use of the muting function may cause accidents. Please
study the muting function carefully before you use it.
Use the muting function while the machine cycle is not in danger
mode. Maintain safety by using other measures while the muting
control is activated.
For applications where the muting function is used when a work
piece passes through, place the muting sensors at such a distance
so that personnel do not accidentally activate the muting function.
Be sure to check that the muting function is working properly
before you use it in live operation. Check the state of the muting
lamp for cleanliness, brightness, etc.
Always connect a muting lamp and use the preset muting lamp
diagnosis function.
Install the muting lamp in a position where it can always be seen
by operators who configure or adjust the machine.
If you use the override function make sure that there is no operator
in the dangerous zone, otherwise this could result in serious injury
or death.
NOTE
The muting function complies with the requirements defined in the following
international standards:
•
ISO 13849-1 (EN 954-1/JIS B 9705-1): 'Safety of machinery - Safety-related
parts of control systems - Part 1: General principles for design, Article 5.9
Muting'
•
IEC 61496-1 (UL 61496/JIS B 9704-1): 'Safety of machinery - Electro sensitive
protective equipment - Part 1: General requirements and tests' Annex A, A.7
Muting
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
