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7 Override
•
This function makes it possible to bypass the barrier completely and activate the OSSD outputs if
machine start is necessary even if one or more beams are interrupted.
•
This possibility is included in all Focus II barriers. This function is only possible when the muting
indicator is connected and if at least one beam is interrupted. If e.g. a pallet during muting operation has
stopped and at least one beam is interrupted after a voltage drop out, it would otherwise not be possible
to restart the conveyor belt.
NB! Make sure that the operator is able to check the entire protective f i eld as long as override function is
enabled. Failure to do so may result in serious injury.
– To start override, the Focus II must be in stop state and at least one beam must be blocked.
– If the entire protective f i eld is free for more than 2 s the override function is immediately stopped.
– A Test request on the TEST/RESET input will stop the override function immediately.
– Maximum timeout for override is 600 s. After this timeout, the Focus II system is restarting according to
the interlock mode set by the selector switches.
At start-up:
• Switch off the power supply.
• Restore the power supply and press the test/reset (see 5) button after approx. 2 s but within 5 s and
keep the button pressed for at least 5 s. The OSSD outputs will activate and thereby remain activated
for a maximum time of 600 s.
• The override function is now enabled and the LMS indicator flashes to signal that the barrier is being
overridden.
• At automatic reset, the OSSD outputs remain activated.
• At manual reset, the reset button must be pressed and released again.
At operating cycle:
•
One or both muting inputs must be active.
•
Press and release the test/reset (see 5) button 3 times <1 s. The OSSD outputs will be activated for
>2 s.
2TLC172015M0201, rev. D
34
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