LNS Express 220 S2, Instruction Manual

Page: 105 / 119

102 CHAPTER 9: MALFUNCTIONS / MAINTENANCE
EXPRESS 220 S2/320 S2
Solutions
Check that the signal "Clamping device closing" is correctly interfaced and programmed.
Check the lathe programming.
Check the interface wiring.
AL27 - MATERIAL MOVING FWD WHILE HEADSTOCK MOVING BACKWARDS!
Description
This alarm is generated when while the headstock is reversing and the bar feeder is maintaining the bar
stock against the turret, stop or tool.
This problem occurs if the bar stock moves forward while this operation.
This means that the turret, stop or tool is defective, broken or at the wrong place.
Solutions
Check the status and position of the turret, stop or tool.
AL28 – THE PUSHER DID NOT FOLLOW THE BAR!
Description
The pusher could not translate on the distance programmed in the parameter
“total loading length”.
Solutions
Check that the value of the parameter "Total feed length
” is equal to the distance made by the spindle,
and not to the finished workpiece.
Check the pusher
’s gripper. It could be worn, broken, or of incorrect size.
Check if the pusher was seized in the channel.
Check that the channels are well sit, and remove any chips.
If issue persists, please contact LNS.
AL29 – THE BAR STOCK DOES NOT LEAN AGAINST THE CUT TOOL!
Description
Activates during bar loading, when the gripper sticks, or if the torque is incorrectly set.
Solutions
Check the clamping of the lathe.
Check if the pusher grippers still works.
Check the loading torque adjustment.
Check position of the End-of-bar.
AL30 – BAR STOCK LOST DURING BACKING OF!
Description
Activates when the PLC does not receive a signal (I7
– SQ12).
Issue occurs if:
·
The gripper is too large
·
A too large burr hinders the pick of the remnant
·
A mechanical flaw hinders the fall of the remnant
·
The sensor is incorrectly adjusted, or defect.
Solutions
Check that the gripper of the pusher is the right size for the current bar.
Check the condition of the gripper of the pusher.
Check that the bar does not have a big blunder that could prevent the proper insertion of the bar in the
gripper of the pusher.
Check the setting of the sensor SQ12.
Check position of the End-of-bar.
If issue persists, please contact LNS.