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light source and the sensors to ensure the normal use of BLPS.
Fig.3.2 External light interference
3.1.2 Muting point setting
Muting point should be set before the use of BLPS to avoid the mistake that BLPS identifies
the workpiece as an obstacle.
Muting point: the point that BLPS will not output control signal, which is generally the same
point with the gearshift point ( That is, when the upper die of the bending machine goes down,
it is changed from fast to slow) of the bender. The muting point is determined by control
system of the bender. According to the characteristics of the three detection points of the
BLPS receiver (the distance between L2 and L3 is 5mm), the height of the suppression point
must be greater than 5mm.
When the thickness of workpiece changes, the muting point of BLPS should be reset by
control system of the bender itself. The signals of muting point that the bender offers to BLPS
must be two independent channel signals,and remain effective during the slow trip. When
sensor is used alone, the muting point should be set by control system of the bender.
If the bender can not provide muting point signal, it is can be provided by optional accessories
(limit switch or approach switch). Adjust the status change position of optional accessories to
the gearshift position of the bender.
Fig.3.3 Muting point position
3.1.3 Safety distance
Safety distance: the distance from the upper die tip to the bottom laser beam baseline, denoted
by S in this manual.
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