User manual MERLIN MERLIN 3000

[. . . ] MT3000 FUNCTION AND CONTROL KEYS 1- 2- JOB FUNCTION KEYS SELECT-Picks a job to run or program. PROGRAM-Learns a blanking setup. DISPLAY FUNCTION KEYS LOCATION ­ Shows broken beam location or total number. NUMBER ­ Shows unit version and size information. BLANKING FUNCTION KEYS AUTO ­ Not available. FLOAT ­ Activates and selects floating beams. [. . . ] This if often referred to as the stroke stop point. With the press brake stopped at this point, insert the part into position. The light curtain can be muted at this point so the part if small can be held as necessary, and if the part is large the light curtain will not interfere with the process because it can be muted. By using the above procedure the hazardous portion of the cycle is protected by the active light curtain and the actual process of bending the material is not hampered by the light curtain because it can be muted from the point at which the die is ¼ inch or less open, through the bending portion back to the open position. Some light curtains require external muting devices to bypass the protection provided by the light curtain at the ¼ inch point while others have built in muting features. The ISB MERLIN 3000 series has the muting function built into the light curtain. WARNING: The muting of the light curtain must be adjusted for each set up so that muting does not occur before the ¼ inch point. The MERLIN 3000 light curtains also have additional features which assist in the processing of large parts on press brakes. In all cases the part should be held with both hands outside the plane of the light curtain during the hazardous portion of the cycle. 56 FLOATING BEAM FEATURE: The floating beam feature allows one or more beams to be blocked without the output of the light curtain opening. This feature is useful when holding a large flat part in the plane of the light curtain. The part may twist or bend slightly possibly blocking a beam. The floating beam feature allows the part to move in and out of the beam without shutting down the press brake. PROGRAMMABLE BLANKING: Many large parts are processed completely without putting the part down or changing the set up. This is most often done when using automatic back gauges to reposition the material stops so multiple bends can be processed. When this is done it is quite common that a flange bent on a previous step will extend through the plane of the light curtain blocking one or more beams on a subsequent step. Again, if the part can be inserted at the ¼ inch position the programmable blanking feature is still not needed. If the flange is relatively small the floating beam feature may be enough to allow operation to continue. When it is not enough the programmable beam blank out feature will allow operation of the press brake with the part in place. The programmable blanking feature will allow the light curtain to learn the shape of the part the first time the part is made. There after the light curtain will blank out the correct beams for each step of the part to allow it to be in the path of the light curtain beams. The beams that are blanked out exactly match the shape of the part. The light curtain will not go to a safe state unless the blanked out beams are blocked by the correct shape of the part. [. . . ] One relay failed or sticking when outputs open. This indicates that the RX column is not being sensed. This indicates the wrong password was entered. Merlin 3000 SAFE All beams satisfied. HAZARD Blocked Beams Total number of beams not satisfied is shown with the beam Total # Beams # number(s) scrolling. [. . . ]