Process for detecting an alarm in an operating machine

A safety system for an operating machine so that an operator is able to interact with such a machine determining a connection between the machine and the ground, comprising:

• a processing unit;
• determination means adapted to determine a current value of a main parameter representative of the electric interaction between said operator and said operating machine under a first condition of ordinary operation of said machine;
• comparison means included in said processing unit and adapted to compare said determined current value with a main reference value;
• activation means for starting an alarm procedure, adapted to be activated as a function of said comparison;
• wherein said processing unit has a configuration suitable for:
• activating said determination means for detecting a first reference value of said main parameter under a condition of electric insulation between said operator and the operating machine;
• activating said determination means for detecting a second reference value of said main parameter under a condition of electric conduction between said operator and the operating machine;
• determining said main reference value in such a manner that said value will be an intermediate value between said first reference value and second reference value.

An operating machine, comprising a safety system so that an operator is able to interact with such a machine determining a connection between the machine and the ground, comprising:

• a processing unit;
• determination means adapted to determine a current value of a main parameter representative of the electric interaction between said operator and said operating machine under a first condition of ordinary operation of said machine;
• comparison means included in said processing unit and adapted to compare said determined current value with a main reference value;
• activation means for starting an alarm procedure, adapted to be activated as a function of said comparison;
• wherein said processing unit has a configuration suitable for:
• activating said determination means for detecting a first reference value of said main parameter under a condition of electric insulation between said operator and the operating machine;
• activating said determination means for detecting a second reference value of said main parameter under a condition of electric conduction between said operator and the operating machine;
• determining said main reference value in such a manner that said value will be an intermediate value between said first reference value and second reference value.