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US 4,631,693 AGranted
System for monitoring the operation of output transducers of a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines
AssigneeG.D Societa' Per Azioni
InventorArmando Neri
Life of this patent
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Abstract
There is described a system for monitoring the operation of output transducers of a central control and monitoring unit for machines usable in production and/or product packaging lines. The main characteristic of this system lies in the fact that it includes a detector for detecting the passage of current in the transducer without relying on a voltage drop detection system.
Claims8
A monitoring system for a machine used in a production line, said system comprising a central control unit;
- an output circuit connected to said central control unit;
- an output transducer connected to said output circuit;
- a monitoring circuit means associated with said output circuit for detecting the passage of current in said output transducer, said monitoring circuit means generating a comparison signal, there being no direct electrical connection between said monitoring circuit means and said output circuit;
- said central control unit including a control circuit which emits a control signal for said output transducer and receives the comparison signal from said monitoring circuit means;
- a stop control means to stop the machine;
- a first luminous indicator;
- said control circuit including means to emit a signal to said stop control means to stop the machine and send a signal to said first luminous indicator, whereby in the event of loss of said comparison signal said means to emit a stop signal is activated to stop the machinery.
4 more elements
Dependencies are inferred from the claim text.