Starting up the device
Leuze electronic
MLC 520S
37
In alignment mode, the LED indicator indicates the signal strength measured by the receiver.
SPECIFICATION
LED indicator
OSSD DURING NOR-
MAL OPERATION
NOT ALIGNED,
SYNC NOT FOUND
OFF
SYNC FOUND, ONE
OR MORE BEAMS IN-
TERRUPTED
OFF
WEAK SIGNAL
STRENGTH, ALL OP-
TICS ARE FREE
ON
MEDIUM-STRONG SIG-
NAL STRENGTH, ALL
OPTICS ARE FREE
ON
MAXIMUM SIGNAL
STRENGTH,
ALL OPTICS ARE
FREE
ON
Ä
If the safety light curtain is optimally aligned, switch the transmitter and receiver off and back on again.
Ä
Make certain that the RESTART contact is correctly connected.
8.3
Minimum distance for cascade system
Fig. 8.3:
Minimum distance for cascade system
In a cascade system with a protected area width up to 3 m, a minimum distance of 263 mm must be pro-
vided between master and slave unit 2 in order to avoid interference.
8.4
Selection of RESTART mode and operation
The interruption of a beam by a matt object results in the opening of the OSSD outputs and stopping of the
safety light curtain (SAFE condition).
Resetting normal operation of the device (closing the OSSD safety contacts = condition of NORMAL OP-
ERATION) can be implemented in two different types:
•
Automatic reset
After tripping, the device resumes its normal operation the moment the object is removed from the pro-
tected area.
•
Manual reset
After tripping, the device does not resume its normal operation until the RESTART function has been
activated, with the prerequisite that the object has been removed from the protected area.
