Function And Possibilities (Short Description) - ABB Focus II FII-4-14 Series Original Instructions Manual

Install the reset button in a location that provides a clear view of the entire hazardous area and where it
cannot be activated from within the hazardous area.
The Focus II system cannot protect a person from a projectile exiting the hazardous area. Install protective
cover(s) or fence(s).
A sufficiently trained and qualified person must properly configure muting related timings for its specific
application, and that person must have responsibility for settings, especially when the muting time limit is
infinite.
Install the switch that activates the override in a location that provides a clear view of the entire hazardous
area and where it cannot be activated from within the hazardous area. Make sure that nobody is in the
hazardous area before activating the override function.
Do not place fluorescent and/or incandescent lights within the effective aperture angle of the receiver, as it
may influence the Focus II system under certain circumstances. Install the sensor system so that it is not
affected by any ref l ective surfaces. Failure to do so may hinder detection, resulting in serious injury.
When using more than 1 set of Focus II system, install them so that mutual interference does not occur,
such as by configuring series connections or using physical barriers between adjacent sets.

2 Function and Possibilities (Short Description)

A beam of infra-red light is generated and sent from transmitter to receiver. If anyone should interrupt this
beam, the OSSD outputs of the safety barriers (see 5.1) are opened, and brings hazardous functions in
machinery to a safe state.
Safety barriers come in heights between 150 mm and 2400 mm and the reaction time is between 13 ms
and 103 ms, depending on the model.
Electric connection is made via an M12 connector. Steering and control of beams that are transmitted and
received is made by two microprocessors, which also transmit all information on status and alignment of the
barrier via f o ur LEDs in the transmitter and f i ve in the receiver (see 14, 15).
Focus II contains many good and user-friendly functions. Below is a summary with references to the
respective chapters that contain more information.
Muting (see 6) means that one or more segments, or the whole barrier, may be bypassed when material is
passed through it. If a light grid is used, one or more beams, or the whole grid, may be bypassed.
Override (see 7) is a function which makes it possible to bypass the light barrier and activate the OSSD
outputs if machine start is necessary, when one or more beams are interrupted.
NB! Muting and override demands a connected muting indicator (LMS) (or resistor 220 Ω, 3 W) before
power is switched on.
www.abb.com/lowvoltage 2TLC172015M0201, rev. D
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