Cutting equipment and its controllers

A method comprising:

• receiving a real time load current of each cutting head motor of each of at least two cutting head assemblies at a controller;
• and
• controlling through use of a controller, the real time load current of each cutting head motor of each of the at least two cutting head assemblies to be within a range defined by a lower limit and an upper limit in response to the received real time load current of each of the at least two cutting head assemblies;
• and wherein the upper and lower limit are stored in computer memory;
• and further comprising determining a value based on the real time load currents of at least two of the cutting head motors of the at least two cutting head assemblies which are actively participating in grinding;
• and
• adjusting one or more of the real time load currents of the cutting head motors of the at least two cutting head assemblies based on the value.

An apparatus comprising:

• a controller including a computer memory and a computer processor;
• at least two cutting head assemblies;
• wherein a computer program is stored in the computer memory;
• wherein each of the at least two cutting head assemblies includes a cutting head motor;
• wherein the computer processor is configured to execute the computer program to perform the following steps:
• receive a real time load current of each cutting head motor of each of the at least two cutting head assemblies;
• control the real time load current of each cutting head motor of each of the at least two cutting head assemblies to be within a range defined by a lower limit and an upper limit in response to the received real time load current of each of the at least two cutting head assemblies;
• determine a real time average load current of at least two cutting head motors of the at least two cutting head assemblies which are actively participating in grinding;
• and
• adjust one or more of the real time load currents of the cutting head motors of the at least two cutting head assemblies to approach the real time average load current.

A method comprising:

• receiving a real time load current of each cutting head motor of each of at least two cutting head assemblies at a controller;
• and
• controlling through use of the controller, the real time load current of each cutting head motor of each of the at least two cutting head assemblies to be within a range defined by a lower limit and an upper limit in response to the received real time load current of each of the at least two cutting head assemblies;
• and wherein the upper and lower limit are stored in computer memory;
• and further comprising determining a real time average load current of at least two of the cutting head motors of the at least two cutting head assemblies which are actively participating in grinding;
• and
• adjusting one or more of the real time load currents of the cutting head motors of the at least two cutting head assemblies to approach the real time average load current.