Originally Posted by
viorel23cnc
You probably have a sensor problem. It happends with this old machines as they age and after transport. Try to pres the hydraulic valve of the gripper and see if anything changes. If that dosn t work inspect the gripper sensor. It is an inductive type sensor. From the main page of the controller press soft key Dysplay then PLC MON. It will show you all the PLCs proceses. You must identify the bit for the gripper sensor , row and column. I dont know exactly witch one is on my machine but I will check and let you know. Take a copper foil and put it between the sensor and the gripper. See if the bit turns from 1 to 0. If so then probably the loading arm was crashed some time in the past. If not then get an engineer to change the sensor with a new one. As caution you must never work on a toolchanger if M6 is active, because the arm can start moving and hurt you badly.