INTERFACE UNIT, CONVEYING SYSTEM AND METHOD FOR MONITORING OPERATING CONDITION OF INPUT CIRCUIT IN SAFETY CIRCUIT OF CONVEYING SYSTEM Russian patent published in 2016 - IPC B66B5/00 

FIELD: electronics.

SUBSTANCE: interface unit (1) for safety circuit of a conveying system comprises input circuit (2) for signal (3a, 3b) determining safety of conveying system. Input circuit (2) comprises a unit for duplicating path of signal (3a, 3b) transmitted to said input circuit (2). Interface unit (1) comprises means for checking operating state of said input circuit (2). Invention also discloses a conveying system and a method of monitoring operating condition of input circuit in safety circuit of conveying system.

EFFECT: simplifying electronic safety circuits by improving diagnosis of electronic safety circuits.

20 cl, 2 dwg