F3S-TGR-SBx-KxC series User’s
manual
7
1 OPERATION
The
S
afety
L
ight
C
urtain (SLC) is made up of one active side with
transmitter
and receiver optical elements called
the
transceiver and one
completely passive
side
, with a mirror system.
The operator has a multifunction pushbutton, which is used for the
following:
•
TEST: If pressed during normal operation, it checks if all
of
the
system, comprising
of
the SLC and the machine is
working
.
Pressing the
TEST
button (opening the contact) basically simulates
the interruption of one or more safety beams and it is possible to
check that the machinery stops in the
correct
time and
configuration
.
•
RESTART: If pressed after an intervention by the SLC, (manual
reset condition) the system will be reset.
•
ALIGNMENT: If the button is pressed when there is no power supply
to the SLC and then power is restored, whilst the button is being
pressed, it enters alignment mode, i.e. it provides an indication of the
alignment position
of the unit by means of two yellow LEDs.
•
OVERRIDE: (only present if the
muting
function is operational) if the
button is pressed within 5 seconds of switching on and it is kept
pressed for at least 5 seconds, the SLC will close the safety outputs
if the beams are interrupted. This condition stops as soon as the
button is released or automatically after 120 seconds.
1.
Automatic reset
: After the SLC has
detected an
object, it returns to
normal operation as soon as the object is removed.
2.
Manual reset
: Normal operating mode is only restored after the object has
been removed and the reset button has been pressed.
To enable the
muting
function, the LMS muting indicator must be
connected
when the SLC is not connected to the power supply,
as
shown in section 6, and then the SLC’s power supply must be restored. To
disable the muting function, the LMS muting indicator must be
disconnected
when the SLC is not connected to the power supply
, and
then the SLC’s power supply restored.
Please remember that by enabling/disabling the
muting
function the
override
function is automatically enabled/disabled.
The outputs are PNP type.
Should the load to be controlled have alternating current or require more
than 500mA consumption, it is necessary to use an external safety relay
module.
F3S-TGR-SBx-KxC series User’s
manual
8
2 PRECAUTIONS
AND
CRITERIA FOR INSTALLATION
The area where the SLC is to be installed must be compatible with the
SLC
‘s technical specifications. The temperature of the environment, interference
caused by electromagnetic disturbance and sources of light and such like,
should be assessed
a
competent person
. Please contact the manufacturer
for any information not contained in this manual.
2.1
CALCULATION OF THE MINIMUM DISTANCE FOR INSTALLATION
The safety distance ‘S’ must guarantee that the operator cannot reach the
danger zone before the machinery with the moving parts has stopped. The
formula to calculate the safety distance for multi-beam SLCs is as follows:
S = (K * T) + C
S = safety distance.
T = T1 + T2
where T1 = machinery’s response time in seconds.
T2 = SLC’s response time in seconds.
K = 1600 mm/s (approach speed of the body to the danger zone).
C = 850 mm
S
= safety distance.
H1
= the bottom optical beam must not have a height above
400 mm
.
H2
= the top optical beam must not be below
900 mm
.
Number of beams
Heights above the reference plane, e.g. ground in mm
4 (F3S-TGR-SBx-K4C)
300, 600, 900, 1200
3 (F3S-TGR-SBx-K3C)
300, 700, 1100
2 (F3S-TGR-SBx-K2C)
400, 900
Reference from EN999
S
H1
H2
