SG2 EXTENDED Instruction Manual30The standard installation described hereinafter is the one shown in Fig. 24, i.e. with the bar assembledwith the connectors pointing down.5.1. Correct alignment procedureThe light curtain alignment can be effected only after having completed the mechanical installation andthe electrical connections as described above. Check alignment results with given table.NOTE: To enter alignment mode select the function as described in chapter 6.6.DisplayLEDNORMALOP.LEDSAFE(BREAK)LEDyellowSYNCLEDyellowLASTCondition AlignmentstatusON Sync NOKLast NOKOFFONSync OKLast NOKOFF ONOFF OFFSync OKLast OKMiddle optics NOKNOalign.ON OFF OFF OFFEach beam is over the min.operating threshold and the numberof beam over the threshold isincluded between0 and 25%MINIMUM align.ON OFF OFF OFFEach beam is over the min.operating threshold and the numberof beam over the threshold isincluded between25 and 50%ON OFF OFF OFFEach beam is over the min.operating threshold and the numberof beam over the threshold isincluded between50 and 75%ON OFF OFF OFFEach beam is over the min.operating threshold and the numberof beam over the threshold isincluded between75 and 100%MAXIMUMalign.A Keep the receiver in a steady position and set the emitter until the yellow LED ( SYNC) isOFF. This condition shows the effective alignment of the first beam (synchronisation beam).B Rotate the emitter, pivoting on the lower optics axis, until the yellow LED ( LAST) is OFF.NOTE:Ensure that the green LED ( NORMAL OP.) is steady ON.C Delimit the area in which the green LED ( ) is steady through some micro adjustments - forthe first and then for the second unit - so to have the maximum alignment (4) and then placeboth units in the centre of this area.D Fix the two units firmly using brackets. Verify that the green LED ( ) on the RX unit is ON and beams are not interrupted, thenverify that the red LED SAFE (BREAK) turns ON if even one single beam is interrupted(condition where an object has been detected ). This verification shall be made with the special cylindrical “Test Piece” having a size suitable tothe resolution of the device used (refer paragraph 2.2.6 ”Controls after first installation”).E Switch OFF and ON the device in standard operating mode.The alignment level is monitored also during device normal operation mode via display (seechapter 7.2).