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Safety maintaining apparatus for automatic machines

  • US 4,523,135 A
  • Filed: 11/02/1983
  • Issued: 06/11/1985
  • Est. Priority Date: 11/02/1982
  • Status: Expired due to Term
First Claim
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1. In an automatic machine having a movable part driven by a servo-control system and which operates in a plurality of different modes, a safety maintaining apparatus for an automatic machine, characterized by:

  • means for generating a mode signal indicative of a specified one of a plurality of control modes; and

    means for limiting a velocity of a servomotor in response to reception of the mode signal, the limiting means being arranged in a loop of a servo-amplifier which feeds driving energy to said servomotor for driving said movable part.

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