Temperatures are set for each zone using �real-number� input. Warning limits are also settable, including low-low, low, high and high-high. When the first level is reached, the operator is informed via an alarm. When the second level is reached, the machine shuts down automatically, preventing damage and possible downtime from occurring. The ability to monitor and alert any deviation from the extruder settings, allows the operator to concentrate on other areas of the extrusion process such as die alignment, product quality, dimensional stability etc. The XL� also comes with �Cold-Start Interlock� that prevents the machine from being run until all the temperature zones have reached their set levels. A direct link between the XL� control system and the extruders AC vector drive enables constant interrogation of the drive. This will source and diagnose any fault on the drive immediately it occurs and will advise the operator on screen of action that needs to be taken, eliminating the need for specialist drive knowledge. In addition, �Auto-Heat Start Time� and �Date Setting� allows the operator to set exactly when the extruder heats are to automatically switch on, saving time and increasing efficiency.