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NOTE: This function is only offered by SP controller.
2.3 Operating mode
2.3.1 Sensor used alone
The operating mode can be set by the assist of control system of the bender when sensor is
used separately.
2.3.2 Sensor and SR controller used together
SR controller provides three operating modes: normal mode, folding box mode and muting
mode, using the mode switch (self-resetting) to change the operating mode. The system enters
normal mode after it is powered on and monitor the state of sensor and internal circuit at the
same time. Rotate the mode switch, operating mode will be converted into folding box
mode—muting mode—normal mode in sequence.
Protective stroke of SR controller is the fast down stroke (top dead point to the gearshift
point), slow down stroke and back stroke are not protected.
Normal mode
Under normal mode, all the protection areas (L1, L2, L3) are effective. Any beam is blocked
in the protective stroke, fast down control output (13/14, 23/24) is cut off to prevent stroke
start or stop it to avoid serious injury. The fast down control output will automatically turn on
after the detected object is removed and the bender will finish this working stroke with the
original speed.
If there is no object to block the detecting beam, the upper mold will move to the gearshift
point at high-speed, then the detecting function is muted and the upper mold continues to go
down to complete the bending stroke.
The normal mode should be selected when the workpiece can not block the detecting beams
before the bender change the speed of the working stroke,such as plate-shaped parts.
Fig.2.4 Operational timing chart of normal mode of SR
Folding box mode
Under folding box mode, the front protection area of the sensor (L1 ) is shielded and the
central protection area (L1 and L2 ) is effective. Any beam of the central protection area is
blocked in the protective stroke, fast down control output (13/14, 23/24) is cut off to prevent
stroke start or stop it to avoid serious injury. The fast down control output will automatically
turn on after the detected object is removed and the bender will finish this working stroke
with the original speed.
The folding box mode should be selected when the workpiece only blocks L1 detecting beam
before the bender change the speed of the working stroke, such as box-shaped parts.
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